From 914cc63eea6fbe11ed46dba5e4438d81b0cd42d2 Mon Sep 17 00:00:00 2001 From: Brendan Higgins Date: Mon, 23 Sep 2019 02:02:31 -0700 Subject: kunit: test: add KUnit test runner core Add core facilities for defining unit tests; this provides a common way to define test cases, functions that execute code which is under test and determine whether the code under test behaves as expected; this also provides a way to group together related test cases in test suites (here we call them test_modules). Just define test cases and how to execute them for now; setting expectations on code will be defined later. Signed-off-by: Brendan Higgins Reviewed-by: Greg Kroah-Hartman Reviewed-by: Logan Gunthorpe Reviewed-by: Luis Chamberlain Reviewed-by: Stephen Boyd Signed-off-by: Shuah Khan --- include/kunit/test.h | 188 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 188 insertions(+) create mode 100644 include/kunit/test.h (limited to 'include/kunit') diff --git a/include/kunit/test.h b/include/kunit/test.h new file mode 100644 index 000000000000..e30d1bf2fb68 --- /dev/null +++ b/include/kunit/test.h @@ -0,0 +1,188 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Base unit test (KUnit) API. + * + * Copyright (C) 2019, Google LLC. + * Author: Brendan Higgins + */ + +#ifndef _KUNIT_TEST_H +#define _KUNIT_TEST_H + +#include + +struct kunit; + +/** + * struct kunit_case - represents an individual test case. + * + * @run_case: the function representing the actual test case. + * @name: the name of the test case. + * + * A test case is a function with the signature, + * ``void (*)(struct kunit *)`` that makes expectations (see + * KUNIT_EXPECT_TRUE()) about code under test. Each test case is associated + * with a &struct kunit_suite and will be run after the suite's init + * function and followed by the suite's exit function. + * + * A test case should be static and should only be created with the + * KUNIT_CASE() macro; additionally, every array of test cases should be + * terminated with an empty test case. + * + * Example: + * + * .. code-block:: c + * + * void add_test_basic(struct kunit *test) + * { + * KUNIT_EXPECT_EQ(test, 1, add(1, 0)); + * KUNIT_EXPECT_EQ(test, 2, add(1, 1)); + * KUNIT_EXPECT_EQ(test, 0, add(-1, 1)); + * KUNIT_EXPECT_EQ(test, INT_MAX, add(0, INT_MAX)); + * KUNIT_EXPECT_EQ(test, -1, add(INT_MAX, INT_MIN)); + * } + * + * static struct kunit_case example_test_cases[] = { + * KUNIT_CASE(add_test_basic), + * {} + * }; + * + */ +struct kunit_case { + void (*run_case)(struct kunit *test); + const char *name; + + /* private: internal use only. */ + bool success; +}; + +/** + * KUNIT_CASE - A helper for creating a &struct kunit_case + * + * @test_name: a reference to a test case function. + * + * Takes a symbol for a function representing a test case and creates a + * &struct kunit_case object from it. See the documentation for + * &struct kunit_case for an example on how to use it. + */ +#define KUNIT_CASE(test_name) { .run_case = test_name, .name = #test_name } + +/** + * struct kunit_suite - describes a related collection of &struct kunit_case + * + * @name: the name of the test. Purely informational. + * @init: called before every test case. + * @exit: called after every test case. + * @test_cases: a null terminated array of test cases. + * + * A kunit_suite is a collection of related &struct kunit_case s, such that + * @init is called before every test case and @exit is called after every + * test case, similar to the notion of a *test fixture* or a *test class* + * in other unit testing frameworks like JUnit or Googletest. + * + * Every &struct kunit_case must be associated with a kunit_suite for KUnit + * to run it. + */ +struct kunit_suite { + const char name[256]; + int (*init)(struct kunit *test); + void (*exit)(struct kunit *test); + struct kunit_case *test_cases; +}; + +/** + * struct kunit - represents a running instance of a test. + * + * @priv: for user to store arbitrary data. Commonly used to pass data + * created in the init function (see &struct kunit_suite). + * + * Used to store information about the current context under which the test + * is running. Most of this data is private and should only be accessed + * indirectly via public functions; the one exception is @priv which can be + * used by the test writer to store arbitrary data. + */ +struct kunit { + void *priv; + + /* private: internal use only. */ + const char *name; /* Read only after initialization! */ + /* + * success starts as true, and may only be set to false during a + * test case; thus, it is safe to update this across multiple + * threads using WRITE_ONCE; however, as a consequence, it may only + * be read after the test case finishes once all threads associated + * with the test case have terminated. + */ + bool success; /* Read only after test_case finishes! */ +}; + +void kunit_init_test(struct kunit *test, const char *name); + +int kunit_run_tests(struct kunit_suite *suite); + +/** + * kunit_test_suite() - used to register a &struct kunit_suite with KUnit. + * + * @suite: a statically allocated &struct kunit_suite. + * + * Registers @suite with the test framework. See &struct kunit_suite for + * more information. + * + * NOTE: Currently KUnit tests are all run as late_initcalls; this means + * that they cannot test anything where tests must run at a different init + * phase. One significant restriction resulting from this is that KUnit + * cannot reliably test anything that is initialize in the late_init phase; + * another is that KUnit is useless to test things that need to be run in + * an earlier init phase. + * + * TODO(brendanhiggins@google.com): Don't run all KUnit tests as + * late_initcalls. I have some future work planned to dispatch all KUnit + * tests from the same place, and at the very least to do so after + * everything else is definitely initialized. + */ +#define kunit_test_suite(suite) \ + static int kunit_suite_init##suite(void) \ + { \ + return kunit_run_tests(&suite); \ + } \ + late_initcall(kunit_suite_init##suite) + +void __printf(3, 4) kunit_printk(const char *level, + const struct kunit *test, + const char *fmt, ...); + +/** + * kunit_info() - Prints an INFO level message associated with @test. + * + * @test: The test context object. + * @fmt: A printk() style format string. + * + * Prints an info level message associated with the test suite being run. + * Takes a variable number of format parameters just like printk(). + */ +#define kunit_info(test, fmt, ...) \ + kunit_printk(KERN_INFO, test, fmt, ##__VA_ARGS__) + +/** + * kunit_warn() - Prints a WARN level message associated with @test. + * + * @test: The test context object. + * @fmt: A printk() style format string. + * + * Prints a warning level message. + */ +#define kunit_warn(test, fmt, ...) \ + kunit_printk(KERN_WARNING, test, fmt, ##__VA_ARGS__) + +/** + * kunit_err() - Prints an ERROR level message associated with @test. + * + * @test: The test context object. + * @fmt: A printk() style format string. + * + * Prints an error level message. + */ +#define kunit_err(test, fmt, ...) \ + kunit_printk(KERN_ERR, test, fmt, ##__VA_ARGS__) + +#endif /* _KUNIT_TEST_H */ -- cgit v1.2.3 From 0a756853586ce185ee1bb9ccbe5ec03e103e594f Mon Sep 17 00:00:00 2001 From: Brendan Higgins Date: Mon, 23 Sep 2019 02:02:32 -0700 Subject: kunit: test: add test resource management API Create a common API for test managed resources like memory and test objects. A lot of times a test will want to set up infrastructure to be used in test cases; this could be anything from just wanting to allocate some memory to setting up a driver stack; this defines facilities for creating "test resources" which are managed by the test infrastructure and are automatically cleaned up at the conclusion of the test. Signed-off-by: Brendan Higgins Reviewed-by: Greg Kroah-Hartman Reviewed-by: Logan Gunthorpe Reviewed-by: Stephen Boyd Signed-off-by: Shuah Khan --- include/kunit/test.h | 187 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 187 insertions(+) (limited to 'include/kunit') diff --git a/include/kunit/test.h b/include/kunit/test.h index e30d1bf2fb68..6781c756f11b 100644 --- a/include/kunit/test.h +++ b/include/kunit/test.h @@ -9,8 +9,72 @@ #ifndef _KUNIT_TEST_H #define _KUNIT_TEST_H +#include #include +struct kunit_resource; + +typedef int (*kunit_resource_init_t)(struct kunit_resource *, void *); +typedef void (*kunit_resource_free_t)(struct kunit_resource *); + +/** + * struct kunit_resource - represents a *test managed resource* + * @allocation: for the user to store arbitrary data. + * @free: a user supplied function to free the resource. Populated by + * kunit_alloc_resource(). + * + * Represents a *test managed resource*, a resource which will automatically be + * cleaned up at the end of a test case. + * + * Example: + * + * .. code-block:: c + * + * struct kunit_kmalloc_params { + * size_t size; + * gfp_t gfp; + * }; + * + * static int kunit_kmalloc_init(struct kunit_resource *res, void *context) + * { + * struct kunit_kmalloc_params *params = context; + * res->allocation = kmalloc(params->size, params->gfp); + * + * if (!res->allocation) + * return -ENOMEM; + * + * return 0; + * } + * + * static void kunit_kmalloc_free(struct kunit_resource *res) + * { + * kfree(res->allocation); + * } + * + * void *kunit_kmalloc(struct kunit *test, size_t size, gfp_t gfp) + * { + * struct kunit_kmalloc_params params; + * struct kunit_resource *res; + * + * params.size = size; + * params.gfp = gfp; + * + * res = kunit_alloc_resource(test, kunit_kmalloc_init, + * kunit_kmalloc_free, ¶ms); + * if (res) + * return res->allocation; + * + * return NULL; + * } + */ +struct kunit_resource { + void *allocation; + kunit_resource_free_t free; + + /* private: internal use only. */ + struct list_head node; +}; + struct kunit; /** @@ -114,6 +178,13 @@ struct kunit { * with the test case have terminated. */ bool success; /* Read only after test_case finishes! */ + spinlock_t lock; /* Guards all mutable test state. */ + /* + * Because resources is a list that may be updated multiple times (with + * new resources) from any thread associated with a test case, we must + * protect it with some type of lock. + */ + struct list_head resources; /* Protected by lock. */ }; void kunit_init_test(struct kunit *test, const char *name); @@ -147,6 +218,122 @@ int kunit_run_tests(struct kunit_suite *suite); } \ late_initcall(kunit_suite_init##suite) +/* + * Like kunit_alloc_resource() below, but returns the struct kunit_resource + * object that contains the allocation. This is mostly for testing purposes. + */ +struct kunit_resource *kunit_alloc_and_get_resource(struct kunit *test, + kunit_resource_init_t init, + kunit_resource_free_t free, + gfp_t internal_gfp, + void *context); + +/** + * kunit_alloc_resource() - Allocates a *test managed resource*. + * @test: The test context object. + * @init: a user supplied function to initialize the resource. + * @free: a user supplied function to free the resource. + * @internal_gfp: gfp to use for internal allocations, if unsure, use GFP_KERNEL + * @context: for the user to pass in arbitrary data to the init function. + * + * Allocates a *test managed resource*, a resource which will automatically be + * cleaned up at the end of a test case. See &struct kunit_resource for an + * example. + * + * NOTE: KUnit needs to allocate memory for each kunit_resource object. You must + * specify an @internal_gfp that is compatible with the use context of your + * resource. + */ +static inline void *kunit_alloc_resource(struct kunit *test, + kunit_resource_init_t init, + kunit_resource_free_t free, + gfp_t internal_gfp, + void *context) +{ + struct kunit_resource *res; + + res = kunit_alloc_and_get_resource(test, init, free, internal_gfp, + context); + + if (res) + return res->allocation; + + return NULL; +} + +typedef bool (*kunit_resource_match_t)(struct kunit *test, + const void *res, + void *match_data); + +/** + * kunit_resource_instance_match() - Match a resource with the same instance. + * @test: Test case to which the resource belongs. + * @res: The data stored in kunit_resource->allocation. + * @match_data: The resource pointer to match against. + * + * An instance of kunit_resource_match_t that matches a resource whose + * allocation matches @match_data. + */ +static inline bool kunit_resource_instance_match(struct kunit *test, + const void *res, + void *match_data) +{ + return res == match_data; +} + +/** + * kunit_resource_destroy() - Find a kunit_resource and destroy it. + * @test: Test case to which the resource belongs. + * @match: Match function. Returns whether a given resource matches @match_data. + * @free: Must match free on the kunit_resource to free. + * @match_data: Data passed into @match. + * + * Free the latest kunit_resource of @test for which @free matches the + * kunit_resource_free_t associated with the resource and for which @match + * returns true. + * + * RETURNS: + * 0 if kunit_resource is found and freed, -ENOENT if not found. + */ +int kunit_resource_destroy(struct kunit *test, + kunit_resource_match_t match, + kunit_resource_free_t free, + void *match_data); + +/** + * kunit_kmalloc() - Like kmalloc() except the allocation is *test managed*. + * @test: The test context object. + * @size: The size in bytes of the desired memory. + * @gfp: flags passed to underlying kmalloc(). + * + * Just like `kmalloc(...)`, except the allocation is managed by the test case + * and is automatically cleaned up after the test case concludes. See &struct + * kunit_resource for more information. + */ +void *kunit_kmalloc(struct kunit *test, size_t size, gfp_t gfp); + +/** + * kunit_kfree() - Like kfree except for allocations managed by KUnit. + * @test: The test case to which the resource belongs. + * @ptr: The memory allocation to free. + */ +void kunit_kfree(struct kunit *test, const void *ptr); + +/** + * kunit_kzalloc() - Just like kunit_kmalloc(), but zeroes the allocation. + * @test: The test context object. + * @size: The size in bytes of the desired memory. + * @gfp: flags passed to underlying kmalloc(). + * + * See kzalloc() and kunit_kmalloc() for more information. + */ +static inline void *kunit_kzalloc(struct kunit *test, size_t size, gfp_t gfp) +{ + return kunit_kmalloc(test, size, gfp | __GFP_ZERO); +} + +void kunit_cleanup(struct kunit *test); + void __printf(3, 4) kunit_printk(const char *level, const struct kunit *test, const char *fmt, ...); -- cgit v1.2.3 From d1fadef194008b22d7d9608426cad29d4bb69ab9 Mon Sep 17 00:00:00 2001 From: Brendan Higgins Date: Mon, 23 Sep 2019 02:02:33 -0700 Subject: kunit: test: add string_stream a std::stream like string builder A number of test features need to do pretty complicated string printing where it may not be possible to rely on a single preallocated string with parameters. So provide a library for constructing the string as you go similar to C++'s std::string. string_stream is really just a string builder, nothing more. Signed-off-by: Brendan Higgins Reviewed-by: Greg Kroah-Hartman Reviewed-by: Logan Gunthorpe Reviewed-by: Stephen Boyd Signed-off-by: Shuah Khan --- include/kunit/string-stream.h | 51 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 include/kunit/string-stream.h (limited to 'include/kunit') diff --git a/include/kunit/string-stream.h b/include/kunit/string-stream.h new file mode 100644 index 000000000000..fe98a00b75a9 --- /dev/null +++ b/include/kunit/string-stream.h @@ -0,0 +1,51 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * C++ stream style string builder used in KUnit for building messages. + * + * Copyright (C) 2019, Google LLC. + * Author: Brendan Higgins + */ + +#ifndef _KUNIT_STRING_STREAM_H +#define _KUNIT_STRING_STREAM_H + +#include +#include +#include + +struct string_stream_fragment { + struct kunit *test; + struct list_head node; + char *fragment; +}; + +struct string_stream { + size_t length; + struct list_head fragments; + /* length and fragments are protected by this lock */ + spinlock_t lock; + struct kunit *test; + gfp_t gfp; +}; + +struct kunit; + +struct string_stream *alloc_string_stream(struct kunit *test, gfp_t gfp); + +int __printf(2, 3) string_stream_add(struct string_stream *stream, + const char *fmt, ...); + +int string_stream_vadd(struct string_stream *stream, + const char *fmt, + va_list args); + +char *string_stream_get_string(struct string_stream *stream); + +int string_stream_append(struct string_stream *stream, + struct string_stream *other); + +bool string_stream_is_empty(struct string_stream *stream); + +int string_stream_destroy(struct string_stream *stream); + +#endif /* _KUNIT_STRING_STREAM_H */ -- cgit v1.2.3 From 6b229e593ff9ac2fd8d83c3654e0f39fa1d49a67 Mon Sep 17 00:00:00 2001 From: Brendan Higgins Date: Mon, 23 Sep 2019 02:02:34 -0700 Subject: kunit: test: add assertion printing library Add `struct kunit_assert` and friends which provide a structured way to capture data from an expectation or an assertion (introduced later in the series) so that it may be printed out in the event of a failure. Signed-off-by: Brendan Higgins Reviewed-by: Stephen Boyd Signed-off-by: Shuah Khan --- include/kunit/assert.h | 356 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 356 insertions(+) create mode 100644 include/kunit/assert.h (limited to 'include/kunit') diff --git a/include/kunit/assert.h b/include/kunit/assert.h new file mode 100644 index 000000000000..db6a0fca09b4 --- /dev/null +++ b/include/kunit/assert.h @@ -0,0 +1,356 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Assertion and expectation serialization API. + * + * Copyright (C) 2019, Google LLC. + * Author: Brendan Higgins + */ + +#ifndef _KUNIT_ASSERT_H +#define _KUNIT_ASSERT_H + +#include +#include + +struct kunit; + +/** + * enum kunit_assert_type - Type of expectation/assertion. + * @KUNIT_ASSERTION: Used to denote that a kunit_assert represents an assertion. + * @KUNIT_EXPECTATION: Denotes that a kunit_assert represents an expectation. + * + * Used in conjunction with a &struct kunit_assert to denote whether it + * represents an expectation or an assertion. + */ +enum kunit_assert_type { + KUNIT_ASSERTION, + KUNIT_EXPECTATION, +}; + +/** + * struct kunit_assert - Data for printing a failed assertion or expectation. + * @test: the test case this expectation/assertion is associated with. + * @type: the type (either an expectation or an assertion) of this kunit_assert. + * @line: the source code line number that the expectation/assertion is at. + * @file: the file path of the source file that the expectation/assertion is in. + * @message: an optional message to provide additional context. + * @format: a function which formats the data in this kunit_assert to a string. + * + * Represents a failed expectation/assertion. Contains all the data necessary to + * format a string to a user reporting the failure. + */ +struct kunit_assert { + struct kunit *test; + enum kunit_assert_type type; + int line; + const char *file; + struct va_format message; + void (*format)(const struct kunit_assert *assert, + struct string_stream *stream); +}; + +/** + * KUNIT_INIT_VA_FMT_NULL - Default initializer for struct va_format. + * + * Used inside a struct initialization block to initialize struct va_format to + * default values where fmt and va are null. + */ +#define KUNIT_INIT_VA_FMT_NULL { .fmt = NULL, .va = NULL } + +/** + * KUNIT_INIT_ASSERT_STRUCT() - Initializer for a &struct kunit_assert. + * @kunit: The test case that this expectation/assertion is associated with. + * @assert_type: The type (assertion or expectation) of this kunit_assert. + * @fmt: The formatting function which builds a string out of this kunit_assert. + * + * The base initializer for a &struct kunit_assert. + */ +#define KUNIT_INIT_ASSERT_STRUCT(kunit, assert_type, fmt) { \ + .test = kunit, \ + .type = assert_type, \ + .file = __FILE__, \ + .line = __LINE__, \ + .message = KUNIT_INIT_VA_FMT_NULL, \ + .format = fmt \ +} + +void kunit_base_assert_format(const struct kunit_assert *assert, + struct string_stream *stream); + +void kunit_assert_print_msg(const struct kunit_assert *assert, + struct string_stream *stream); + +/** + * struct kunit_fail_assert - Represents a plain fail expectation/assertion. + * @assert: The parent of this type. + * + * Represents a simple KUNIT_FAIL/KUNIT_ASSERT_FAILURE that always fails. + */ +struct kunit_fail_assert { + struct kunit_assert assert; +}; + +void kunit_fail_assert_format(const struct kunit_assert *assert, + struct string_stream *stream); + +/** + * KUNIT_INIT_FAIL_ASSERT_STRUCT() - Initializer for &struct kunit_fail_assert. + * @test: The test case that this expectation/assertion is associated with. + * @type: The type (assertion or expectation) of this kunit_assert. + * + * Initializes a &struct kunit_fail_assert. Intended to be used in + * KUNIT_EXPECT_* and KUNIT_ASSERT_* macros. + */ +#define KUNIT_INIT_FAIL_ASSERT_STRUCT(test, type) { \ + .assert = KUNIT_INIT_ASSERT_STRUCT(test, \ + type, \ + kunit_fail_assert_format) \ +} + +/** + * struct kunit_unary_assert - Represents a KUNIT_{EXPECT|ASSERT}_{TRUE|FALSE} + * @assert: The parent of this type. + * @condition: A string representation of a conditional expression. + * @expected_true: True if of type KUNIT_{EXPECT|ASSERT}_TRUE, false otherwise. + * + * Represents a simple expectation or assertion that simply asserts something is + * true or false. In other words, represents the expectations: + * KUNIT_{EXPECT|ASSERT}_{TRUE|FALSE} + */ +struct kunit_unary_assert { + struct kunit_assert assert; + const char *condition; + bool expected_true; +}; + +void kunit_unary_assert_format(const struct kunit_assert *assert, + struct string_stream *stream); + +/** + * KUNIT_INIT_UNARY_ASSERT_STRUCT() - Initializes &struct kunit_unary_assert. + * @test: The test case that this expectation/assertion is associated with. + * @type: The type (assertion or expectation) of this kunit_assert. + * @cond: A string representation of the expression asserted true or false. + * @expect_true: True if of type KUNIT_{EXPECT|ASSERT}_TRUE, false otherwise. + * + * Initializes a &struct kunit_unary_assert. Intended to be used in + * KUNIT_EXPECT_* and KUNIT_ASSERT_* macros. + */ +#define KUNIT_INIT_UNARY_ASSERT_STRUCT(test, type, cond, expect_true) { \ + .assert = KUNIT_INIT_ASSERT_STRUCT(test, \ + type, \ + kunit_unary_assert_format), \ + .condition = cond, \ + .expected_true = expect_true \ +} + +/** + * struct kunit_ptr_not_err_assert - An expectation/assertion that a pointer is + * not NULL and not a -errno. + * @assert: The parent of this type. + * @text: A string representation of the expression passed to the expectation. + * @value: The actual evaluated pointer value of the expression. + * + * Represents an expectation/assertion that a pointer is not null and is does + * not contain a -errno. (See IS_ERR_OR_NULL().) + */ +struct kunit_ptr_not_err_assert { + struct kunit_assert assert; + const char *text; + const void *value; +}; + +void kunit_ptr_not_err_assert_format(const struct kunit_assert *assert, + struct string_stream *stream); + +/** + * KUNIT_INIT_PTR_NOT_ERR_ASSERT_STRUCT() - Initializes a + * &struct kunit_ptr_not_err_assert. + * @test: The test case that this expectation/assertion is associated with. + * @type: The type (assertion or expectation) of this kunit_assert. + * @txt: A string representation of the expression passed to the expectation. + * @val: The actual evaluated pointer value of the expression. + * + * Initializes a &struct kunit_ptr_not_err_assert. Intended to be used in + * KUNIT_EXPECT_* and KUNIT_ASSERT_* macros. + */ +#define KUNIT_INIT_PTR_NOT_ERR_STRUCT(test, type, txt, val) { \ + .assert = KUNIT_INIT_ASSERT_STRUCT(test, \ + type, \ + kunit_ptr_not_err_assert_format), \ + .text = txt, \ + .value = val \ +} + +/** + * struct kunit_binary_assert - An expectation/assertion that compares two + * non-pointer values (for example, KUNIT_EXPECT_EQ(test, 1 + 1, 2)). + * @assert: The parent of this type. + * @operation: A string representation of the comparison operator (e.g. "=="). + * @left_text: A string representation of the expression in the left slot. + * @left_value: The actual evaluated value of the expression in the left slot. + * @right_text: A string representation of the expression in the right slot. + * @right_value: The actual evaluated value of the expression in the right slot. + * + * Represents an expectation/assertion that compares two non-pointer values. For + * example, to expect that 1 + 1 == 2, you can use the expectation + * KUNIT_EXPECT_EQ(test, 1 + 1, 2); + */ +struct kunit_binary_assert { + struct kunit_assert assert; + const char *operation; + const char *left_text; + long long left_value; + const char *right_text; + long long right_value; +}; + +void kunit_binary_assert_format(const struct kunit_assert *assert, + struct string_stream *stream); + +/** + * KUNIT_INIT_BINARY_ASSERT_STRUCT() - Initializes a + * &struct kunit_binary_assert. + * @test: The test case that this expectation/assertion is associated with. + * @type: The type (assertion or expectation) of this kunit_assert. + * @op_str: A string representation of the comparison operator (e.g. "=="). + * @left_str: A string representation of the expression in the left slot. + * @left_val: The actual evaluated value of the expression in the left slot. + * @right_str: A string representation of the expression in the right slot. + * @right_val: The actual evaluated value of the expression in the right slot. + * + * Initializes a &struct kunit_binary_assert. Intended to be used in + * KUNIT_EXPECT_* and KUNIT_ASSERT_* macros. + */ +#define KUNIT_INIT_BINARY_ASSERT_STRUCT(test, \ + type, \ + op_str, \ + left_str, \ + left_val, \ + right_str, \ + right_val) { \ + .assert = KUNIT_INIT_ASSERT_STRUCT(test, \ + type, \ + kunit_binary_assert_format), \ + .operation = op_str, \ + .left_text = left_str, \ + .left_value = left_val, \ + .right_text = right_str, \ + .right_value = right_val \ +} + +/** + * struct kunit_binary_ptr_assert - An expectation/assertion that compares two + * pointer values (for example, KUNIT_EXPECT_PTR_EQ(test, foo, bar)). + * @assert: The parent of this type. + * @operation: A string representation of the comparison operator (e.g. "=="). + * @left_text: A string representation of the expression in the left slot. + * @left_value: The actual evaluated value of the expression in the left slot. + * @right_text: A string representation of the expression in the right slot. + * @right_value: The actual evaluated value of the expression in the right slot. + * + * Represents an expectation/assertion that compares two pointer values. For + * example, to expect that foo and bar point to the same thing, you can use the + * expectation KUNIT_EXPECT_PTR_EQ(test, foo, bar); + */ +struct kunit_binary_ptr_assert { + struct kunit_assert assert; + const char *operation; + const char *left_text; + const void *left_value; + const char *right_text; + const void *right_value; +}; + +void kunit_binary_ptr_assert_format(const struct kunit_assert *assert, + struct string_stream *stream); + +/** + * KUNIT_INIT_BINARY_PTR_ASSERT_STRUCT() - Initializes a + * &struct kunit_binary_ptr_assert. + * @test: The test case that this expectation/assertion is associated with. + * @type: The type (assertion or expectation) of this kunit_assert. + * @op_str: A string representation of the comparison operator (e.g. "=="). + * @left_str: A string representation of the expression in the left slot. + * @left_val: The actual evaluated value of the expression in the left slot. + * @right_str: A string representation of the expression in the right slot. + * @right_val: The actual evaluated value of the expression in the right slot. + * + * Initializes a &struct kunit_binary_ptr_assert. Intended to be used in + * KUNIT_EXPECT_* and KUNIT_ASSERT_* macros. + */ +#define KUNIT_INIT_BINARY_PTR_ASSERT_STRUCT(test, \ + type, \ + op_str, \ + left_str, \ + left_val, \ + right_str, \ + right_val) { \ + .assert = KUNIT_INIT_ASSERT_STRUCT(test, \ + type, \ + kunit_binary_ptr_assert_format), \ + .operation = op_str, \ + .left_text = left_str, \ + .left_value = left_val, \ + .right_text = right_str, \ + .right_value = right_val \ +} + +/** + * struct kunit_binary_str_assert - An expectation/assertion that compares two + * string values (for example, KUNIT_EXPECT_STREQ(test, foo, "bar")). + * @assert: The parent of this type. + * @operation: A string representation of the comparison operator (e.g. "=="). + * @left_text: A string representation of the expression in the left slot. + * @left_value: The actual evaluated value of the expression in the left slot. + * @right_text: A string representation of the expression in the right slot. + * @right_value: The actual evaluated value of the expression in the right slot. + * + * Represents an expectation/assertion that compares two string values. For + * example, to expect that the string in foo is equal to "bar", you can use the + * expectation KUNIT_EXPECT_STREQ(test, foo, "bar"); + */ +struct kunit_binary_str_assert { + struct kunit_assert assert; + const char *operation; + const char *left_text; + const char *left_value; + const char *right_text; + const char *right_value; +}; + +void kunit_binary_str_assert_format(const struct kunit_assert *assert, + struct string_stream *stream); + +/** + * KUNIT_INIT_BINARY_STR_ASSERT_STRUCT() - Initializes a + * &struct kunit_binary_str_assert. + * @test: The test case that this expectation/assertion is associated with. + * @type: The type (assertion or expectation) of this kunit_assert. + * @op_str: A string representation of the comparison operator (e.g. "=="). + * @left_str: A string representation of the expression in the left slot. + * @left_val: The actual evaluated value of the expression in the left slot. + * @right_str: A string representation of the expression in the right slot. + * @right_val: The actual evaluated value of the expression in the right slot. + * + * Initializes a &struct kunit_binary_str_assert. Intended to be used in + * KUNIT_EXPECT_* and KUNIT_ASSERT_* macros. + */ +#define KUNIT_INIT_BINARY_STR_ASSERT_STRUCT(test, \ + type, \ + op_str, \ + left_str, \ + left_val, \ + right_str, \ + right_val) { \ + .assert = KUNIT_INIT_ASSERT_STRUCT(test, \ + type, \ + kunit_binary_str_assert_format), \ + .operation = op_str, \ + .left_text = left_str, \ + .left_value = left_val, \ + .right_text = right_str, \ + .right_value = right_val \ +} + +#endif /* _KUNIT_ASSERT_H */ -- cgit v1.2.3 From 73cda7bb8bfb1d4be0325d76172950ede1a65fd0 Mon Sep 17 00:00:00 2001 From: Brendan Higgins Date: Mon, 23 Sep 2019 02:02:35 -0700 Subject: kunit: test: add the concept of expectations Add support for expectations, which allow properties to be specified and then verified in tests. Signed-off-by: Brendan Higgins Reviewed-by: Greg Kroah-Hartman Reviewed-by: Logan Gunthorpe Reviewed-by: Stephen Boyd Signed-off-by: Shuah Khan --- include/kunit/test.h | 836 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 836 insertions(+) (limited to 'include/kunit') diff --git a/include/kunit/test.h b/include/kunit/test.h index 6781c756f11b..30a62de16bc9 100644 --- a/include/kunit/test.h +++ b/include/kunit/test.h @@ -9,6 +9,8 @@ #ifndef _KUNIT_TEST_H #define _KUNIT_TEST_H +#include +#include #include #include @@ -372,4 +374,838 @@ void __printf(3, 4) kunit_printk(const char *level, #define kunit_err(test, fmt, ...) \ kunit_printk(KERN_ERR, test, fmt, ##__VA_ARGS__) +/** + * KUNIT_SUCCEED() - A no-op expectation. Only exists for code clarity. + * @test: The test context object. + * + * The opposite of KUNIT_FAIL(), it is an expectation that cannot fail. In other + * words, it does nothing and only exists for code clarity. See + * KUNIT_EXPECT_TRUE() for more information. + */ +#define KUNIT_SUCCEED(test) do {} while (0) + +void kunit_do_assertion(struct kunit *test, + struct kunit_assert *assert, + bool pass, + const char *fmt, ...); + +#define KUNIT_ASSERTION(test, pass, assert_class, INITIALIZER, fmt, ...) do { \ + struct assert_class __assertion = INITIALIZER; \ + kunit_do_assertion(test, \ + &__assertion.assert, \ + pass, \ + fmt, \ + ##__VA_ARGS__); \ +} while (0) + + +#define KUNIT_FAIL_ASSERTION(test, assert_type, fmt, ...) \ + KUNIT_ASSERTION(test, \ + false, \ + kunit_fail_assert, \ + KUNIT_INIT_FAIL_ASSERT_STRUCT(test, assert_type), \ + fmt, \ + ##__VA_ARGS__) + +/** + * KUNIT_FAIL() - Always causes a test to fail when evaluated. + * @test: The test context object. + * @fmt: an informational message to be printed when the assertion is made. + * @...: string format arguments. + * + * The opposite of KUNIT_SUCCEED(), it is an expectation that always fails. In + * other words, it always results in a failed expectation, and consequently + * always causes the test case to fail when evaluated. See KUNIT_EXPECT_TRUE() + * for more information. + */ +#define KUNIT_FAIL(test, fmt, ...) \ + KUNIT_FAIL_ASSERTION(test, \ + KUNIT_EXPECTATION, \ + fmt, \ + ##__VA_ARGS__) + +#define KUNIT_UNARY_ASSERTION(test, \ + assert_type, \ + condition, \ + expected_true, \ + fmt, \ + ...) \ + KUNIT_ASSERTION(test, \ + !!(condition) == !!expected_true, \ + kunit_unary_assert, \ + KUNIT_INIT_UNARY_ASSERT_STRUCT(test, \ + assert_type, \ + #condition, \ + expected_true), \ + fmt, \ + ##__VA_ARGS__) + +#define KUNIT_TRUE_MSG_ASSERTION(test, assert_type, condition, fmt, ...) \ + KUNIT_UNARY_ASSERTION(test, \ + assert_type, \ + condition, \ + true, \ + fmt, \ + ##__VA_ARGS__) + +#define KUNIT_TRUE_ASSERTION(test, assert_type, condition) \ + KUNIT_TRUE_MSG_ASSERTION(test, assert_type, condition, NULL) + +#define KUNIT_FALSE_MSG_ASSERTION(test, assert_type, condition, fmt, ...) \ + KUNIT_UNARY_ASSERTION(test, \ + assert_type, \ + condition, \ + false, \ + fmt, \ + ##__VA_ARGS__) + +#define KUNIT_FALSE_ASSERTION(test, assert_type, condition) \ + KUNIT_FALSE_MSG_ASSERTION(test, assert_type, condition, NULL) + +/* + * A factory macro for defining the assertions and expectations for the basic + * comparisons defined for the built in types. + * + * Unfortunately, there is no common type that all types can be promoted to for + * which all the binary operators behave the same way as for the actual types + * (for example, there is no type that long long and unsigned long long can + * both be cast to where the comparison result is preserved for all values). So + * the best we can do is do the comparison in the original types and then coerce + * everything to long long for printing; this way, the comparison behaves + * correctly and the printed out value usually makes sense without + * interpretation, but can always be interpreted to figure out the actual + * value. + */ +#define KUNIT_BASE_BINARY_ASSERTION(test, \ + assert_class, \ + ASSERT_CLASS_INIT, \ + assert_type, \ + left, \ + op, \ + right, \ + fmt, \ + ...) \ +do { \ + typeof(left) __left = (left); \ + typeof(right) __right = (right); \ + ((void)__typecheck(__left, __right)); \ + \ + KUNIT_ASSERTION(test, \ + __left op __right, \ + assert_class, \ + ASSERT_CLASS_INIT(test, \ + assert_type, \ + #op, \ + #left, \ + __left, \ + #right, \ + __right), \ + fmt, \ + ##__VA_ARGS__); \ +} while (0) + +#define KUNIT_BASE_EQ_MSG_ASSERTION(test, \ + assert_class, \ + ASSERT_CLASS_INIT, \ + assert_type, \ + left, \ + right, \ + fmt, \ + ...) \ + KUNIT_BASE_BINARY_ASSERTION(test, \ + assert_class, \ + ASSERT_CLASS_INIT, \ + assert_type, \ + left, ==, right, \ + fmt, \ + ##__VA_ARGS__) + +#define KUNIT_BASE_NE_MSG_ASSERTION(test, \ + assert_class, \ + ASSERT_CLASS_INIT, \ + assert_type, \ + left, \ + right, \ + fmt, \ + ...) \ + KUNIT_BASE_BINARY_ASSERTION(test, \ + assert_class, \ + ASSERT_CLASS_INIT, \ + assert_type, \ + left, !=, right, \ + fmt, \ + ##__VA_ARGS__) + +#define KUNIT_BASE_LT_MSG_ASSERTION(test, \ + assert_class, \ + ASSERT_CLASS_INIT, \ + assert_type, \ + left, \ + right, \ + fmt, \ + ...) \ + KUNIT_BASE_BINARY_ASSERTION(test, \ + assert_class, \ + ASSERT_CLASS_INIT, \ + assert_type, \ + left, <, right, \ + fmt, \ + ##__VA_ARGS__) + +#define KUNIT_BASE_LE_MSG_ASSERTION(test, \ + assert_class, \ + ASSERT_CLASS_INIT, \ + assert_type, \ + left, \ + right, \ + fmt, \ + ...) \ + KUNIT_BASE_BINARY_ASSERTION(test, \ + assert_class, \ + ASSERT_CLASS_INIT, \ + assert_type, \ + left, <=, right, \ + fmt, \ + ##__VA_ARGS__) + +#define KUNIT_BASE_GT_MSG_ASSERTION(test, \ + assert_class, \ + ASSERT_CLASS_INIT, \ + assert_type, \ + left, \ + right, \ + fmt, \ + ...) \ + KUNIT_BASE_BINARY_ASSERTION(test, \ + assert_class, \ + ASSERT_CLASS_INIT, \ + assert_type, \ + left, >, right, \ + fmt, \ + ##__VA_ARGS__) + +#define KUNIT_BASE_GE_MSG_ASSERTION(test, \ + assert_class, \ + ASSERT_CLASS_INIT, \ + assert_type, \ + left, \ + right, \ + fmt, \ + ...) \ + KUNIT_BASE_BINARY_ASSERTION(test, \ + assert_class, \ + ASSERT_CLASS_INIT, \ + assert_type, \ + left, >=, right, \ + fmt, \ + ##__VA_ARGS__) + +#define KUNIT_BINARY_EQ_MSG_ASSERTION(test, assert_type, left, right, fmt, ...)\ + KUNIT_BASE_EQ_MSG_ASSERTION(test, \ + kunit_binary_assert, \ + KUNIT_INIT_BINARY_ASSERT_STRUCT, \ + assert_type, \ + left, \ + right, \ + fmt, \ + ##__VA_ARGS__) + +#define KUNIT_BINARY_EQ_ASSERTION(test, assert_type, left, right) \ + KUNIT_BINARY_EQ_MSG_ASSERTION(test, \ + assert_type, \ + left, \ + right, \ + NULL) + +#define KUNIT_BINARY_PTR_EQ_MSG_ASSERTION(test, \ + assert_type, \ + left, \ + right, \ + fmt, \ + ...) \ + KUNIT_BASE_EQ_MSG_ASSERTION(test, \ + kunit_binary_ptr_assert, \ + KUNIT_INIT_BINARY_PTR_ASSERT_STRUCT, \ + assert_type, \ + left, \ + right, \ + fmt, \ + ##__VA_ARGS__) + +#define KUNIT_BINARY_PTR_EQ_ASSERTION(test, assert_type, left, right) \ + KUNIT_BINARY_PTR_EQ_MSG_ASSERTION(test, \ + assert_type, \ + left, \ + right, \ + NULL) + +#define KUNIT_BINARY_NE_MSG_ASSERTION(test, assert_type, left, right, fmt, ...)\ + KUNIT_BASE_NE_MSG_ASSERTION(test, \ + kunit_binary_assert, \ + KUNIT_INIT_BINARY_ASSERT_STRUCT, \ + assert_type, \ + left, \ + right, \ + fmt, \ + ##__VA_ARGS__) + +#define KUNIT_BINARY_NE_ASSERTION(test, assert_type, left, right) \ + KUNIT_BINARY_NE_MSG_ASSERTION(test, \ + assert_type, \ + left, \ + right, \ + NULL) + +#define KUNIT_BINARY_PTR_NE_MSG_ASSERTION(test, \ + assert_type, \ + left, \ + right, \ + fmt, \ + ...) \ + KUNIT_BASE_NE_MSG_ASSERTION(test, \ + kunit_binary_ptr_assert, \ + KUNIT_INIT_BINARY_PTR_ASSERT_STRUCT, \ + assert_type, \ + left, \ + right, \ + fmt, \ + ##__VA_ARGS__) + +#define KUNIT_BINARY_PTR_NE_ASSERTION(test, assert_type, left, right) \ + KUNIT_BINARY_PTR_NE_MSG_ASSERTION(test, \ + assert_type, \ + left, \ + right, \ + NULL) + +#define KUNIT_BINARY_LT_MSG_ASSERTION(test, assert_type, left, right, fmt, ...)\ + KUNIT_BASE_LT_MSG_ASSERTION(test, \ + kunit_binary_assert, \ + KUNIT_INIT_BINARY_ASSERT_STRUCT, \ + assert_type, \ + left, \ + right, \ + fmt, \ + ##__VA_ARGS__) + +#define KUNIT_BINARY_LT_ASSERTION(test, assert_type, left, right) \ + KUNIT_BINARY_LT_MSG_ASSERTION(test, \ + assert_type, \ + left, \ + right, \ + NULL) + +#define KUNIT_BINARY_PTR_LT_MSG_ASSERTION(test, \ + assert_type, \ + left, \ + right, \ + fmt, \ + ...) \ + KUNIT_BASE_LT_MSG_ASSERTION(test, \ + kunit_binary_ptr_assert, \ + KUNIT_INIT_BINARY_PTR_ASSERT_STRUCT, \ + assert_type, \ + left, \ + right, \ + fmt, \ + ##__VA_ARGS__) + +#define KUNIT_BINARY_PTR_LT_ASSERTION(test, assert_type, left, right) \ + KUNIT_BINARY_PTR_LT_MSG_ASSERTION(test, \ + assert_type, \ + left, \ + right, \ + NULL) + +#define KUNIT_BINARY_LE_MSG_ASSERTION(test, assert_type, left, right, fmt, ...)\ + KUNIT_BASE_LE_MSG_ASSERTION(test, \ + kunit_binary_assert, \ + KUNIT_INIT_BINARY_ASSERT_STRUCT, \ + assert_type, \ + left, \ + right, \ + fmt, \ + ##__VA_ARGS__) + +#define KUNIT_BINARY_LE_ASSERTION(test, assert_type, left, right) \ + KUNIT_BINARY_LE_MSG_ASSERTION(test, \ + assert_type, \ + left, \ + right, \ + NULL) + +#define KUNIT_BINARY_PTR_LE_MSG_ASSERTION(test, \ + assert_type, \ + left, \ + right, \ + fmt, \ + ...) \ + KUNIT_BASE_LE_MSG_ASSERTION(test, \ + kunit_binary_ptr_assert, \ + KUNIT_INIT_BINARY_PTR_ASSERT_STRUCT, \ + assert_type, \ + left, \ + right, \ + fmt, \ + ##__VA_ARGS__) + +#define KUNIT_BINARY_PTR_LE_ASSERTION(test, assert_type, left, right) \ + KUNIT_BINARY_PTR_LE_MSG_ASSERTION(test, \ + assert_type, \ + left, \ + right, \ + NULL) + +#define KUNIT_BINARY_GT_MSG_ASSERTION(test, assert_type, left, right, fmt, ...)\ + KUNIT_BASE_GT_MSG_ASSERTION(test, \ + kunit_binary_assert, \ + KUNIT_INIT_BINARY_ASSERT_STRUCT, \ + assert_type, \ + left, \ + right, \ + fmt, \ + ##__VA_ARGS__) + +#define KUNIT_BINARY_GT_ASSERTION(test, assert_type, left, right) \ + KUNIT_BINARY_GT_MSG_ASSERTION(test, \ + assert_type, \ + left, \ + right, \ + NULL) + +#define KUNIT_BINARY_PTR_GT_MSG_ASSERTION(test, \ + assert_type, \ + left, \ + right, \ + fmt, \ + ...) \ + KUNIT_BASE_GT_MSG_ASSERTION(test, \ + kunit_binary_ptr_assert, \ + KUNIT_INIT_BINARY_PTR_ASSERT_STRUCT, \ + assert_type, \ + left, \ + right, \ + fmt, \ + ##__VA_ARGS__) + +#define KUNIT_BINARY_PTR_GT_ASSERTION(test, assert_type, left, right) \ + KUNIT_BINARY_PTR_GT_MSG_ASSERTION(test, \ + assert_type, \ + left, \ + right, \ + NULL) + +#define KUNIT_BINARY_GE_MSG_ASSERTION(test, assert_type, left, right, fmt, ...)\ + KUNIT_BASE_GE_MSG_ASSERTION(test, \ + kunit_binary_assert, \ + KUNIT_INIT_BINARY_ASSERT_STRUCT, \ + assert_type, \ + left, \ + right, \ + fmt, \ + ##__VA_ARGS__) + +#define KUNIT_BINARY_GE_ASSERTION(test, assert_type, left, right) \ + KUNIT_BINARY_GE_MSG_ASSERTION(test, \ + assert_type, \ + left, \ + right, \ + NULL) + +#define KUNIT_BINARY_PTR_GE_MSG_ASSERTION(test, \ + assert_type, \ + left, \ + right, \ + fmt, \ + ...) \ + KUNIT_BASE_GE_MSG_ASSERTION(test, \ + kunit_binary_ptr_assert, \ + KUNIT_INIT_BINARY_PTR_ASSERT_STRUCT, \ + assert_type, \ + left, \ + right, \ + fmt, \ + ##__VA_ARGS__) + +#define KUNIT_BINARY_PTR_GE_ASSERTION(test, assert_type, left, right) \ + KUNIT_BINARY_PTR_GE_MSG_ASSERTION(test, \ + assert_type, \ + left, \ + right, \ + NULL) + +#define KUNIT_BINARY_STR_ASSERTION(test, \ + assert_type, \ + left, \ + op, \ + right, \ + fmt, \ + ...) \ +do { \ + typeof(left) __left = (left); \ + typeof(right) __right = (right); \ + \ + KUNIT_ASSERTION(test, \ + strcmp(__left, __right) op 0, \ + kunit_binary_str_assert, \ + KUNIT_INIT_BINARY_ASSERT_STRUCT(test, \ + assert_type, \ + #op, \ + #left, \ + __left, \ + #right, \ + __right), \ + fmt, \ + ##__VA_ARGS__); \ +} while (0) + +#define KUNIT_BINARY_STR_EQ_MSG_ASSERTION(test, \ + assert_type, \ + left, \ + right, \ + fmt, \ + ...) \ + KUNIT_BINARY_STR_ASSERTION(test, \ + assert_type, \ + left, ==, right, \ + fmt, \ + ##__VA_ARGS__) + +#define KUNIT_BINARY_STR_EQ_ASSERTION(test, assert_type, left, right) \ + KUNIT_BINARY_STR_EQ_MSG_ASSERTION(test, \ + assert_type, \ + left, \ + right, \ + NULL) + +#define KUNIT_BINARY_STR_NE_MSG_ASSERTION(test, \ + assert_type, \ + left, \ + right, \ + fmt, \ + ...) \ + KUNIT_BINARY_STR_ASSERTION(test, \ + assert_type, \ + left, !=, right, \ + fmt, \ + ##__VA_ARGS__) + +#define KUNIT_BINARY_STR_NE_ASSERTION(test, assert_type, left, right) \ + KUNIT_BINARY_STR_NE_MSG_ASSERTION(test, \ + assert_type, \ + left, \ + right, \ + NULL) + +#define KUNIT_PTR_NOT_ERR_OR_NULL_MSG_ASSERTION(test, \ + assert_type, \ + ptr, \ + fmt, \ + ...) \ +do { \ + typeof(ptr) __ptr = (ptr); \ + \ + KUNIT_ASSERTION(test, \ + !IS_ERR_OR_NULL(__ptr), \ + kunit_ptr_not_err_assert, \ + KUNIT_INIT_PTR_NOT_ERR_STRUCT(test, \ + assert_type, \ + #ptr, \ + __ptr), \ + fmt, \ + ##__VA_ARGS__); \ +} while (0) + +#define KUNIT_PTR_NOT_ERR_OR_NULL_ASSERTION(test, assert_type, ptr) \ + KUNIT_PTR_NOT_ERR_OR_NULL_MSG_ASSERTION(test, \ + assert_type, \ + ptr, \ + NULL) + +/** + * KUNIT_EXPECT_TRUE() - Causes a test failure when the expression is not true. + * @test: The test context object. + * @condition: an arbitrary boolean expression. The test fails when this does + * not evaluate to true. + * + * This and expectations of the form `KUNIT_EXPECT_*` will cause the test case + * to fail when the specified condition is not met; however, it will not prevent + * the test case from continuing to run; this is otherwise known as an + * *expectation failure*. + */ +#define KUNIT_EXPECT_TRUE(test, condition) \ + KUNIT_TRUE_ASSERTION(test, KUNIT_EXPECTATION, condition) + +#define KUNIT_EXPECT_TRUE_MSG(test, condition, fmt, ...) \ + KUNIT_TRUE_MSG_ASSERTION(test, \ + KUNIT_EXPECTATION, \ + condition, \ + fmt, \ + ##__VA_ARGS__) + +/** + * KUNIT_EXPECT_FALSE() - Makes a test failure when the expression is not false. + * @test: The test context object. + * @condition: an arbitrary boolean expression. The test fails when this does + * not evaluate to false. + * + * Sets an expectation that @condition evaluates to false. See + * KUNIT_EXPECT_TRUE() for more information. + */ +#define KUNIT_EXPECT_FALSE(test, condition) \ + KUNIT_FALSE_ASSERTION(test, KUNIT_EXPECTATION, condition) + +#define KUNIT_EXPECT_FALSE_MSG(test, condition, fmt, ...) \ + KUNIT_FALSE_MSG_ASSERTION(test, \ + KUNIT_EXPECTATION, \ + condition, \ + fmt, \ + ##__VA_ARGS__) + +/** + * KUNIT_EXPECT_EQ() - Sets an expectation that @left and @right are equal. + * @test: The test context object. + * @left: an arbitrary expression that evaluates to a primitive C type. + * @right: an arbitrary expression that evaluates to a primitive C type. + * + * Sets an expectation that the values that @left and @right evaluate to are + * equal. This is semantically equivalent to + * KUNIT_EXPECT_TRUE(@test, (@left) == (@right)). See KUNIT_EXPECT_TRUE() for + * more information. + */ +#define KUNIT_EXPECT_EQ(test, left, right) \ + KUNIT_BINARY_EQ_ASSERTION(test, KUNIT_EXPECTATION, left, right) + +#define KUNIT_EXPECT_EQ_MSG(test, left, right, fmt, ...) \ + KUNIT_BINARY_EQ_MSG_ASSERTION(test, \ + KUNIT_EXPECTATION, \ + left, \ + right, \ + fmt, \ + ##__VA_ARGS__) + +/** + * KUNIT_EXPECT_PTR_EQ() - Expects that pointers @left and @right are equal. + * @test: The test context object. + * @left: an arbitrary expression that evaluates to a pointer. + * @right: an arbitrary expression that evaluates to a pointer. + * + * Sets an expectation that the values that @left and @right evaluate to are + * equal. This is semantically equivalent to + * KUNIT_EXPECT_TRUE(@test, (@left) == (@right)). See KUNIT_EXPECT_TRUE() for + * more information. + */ +#define KUNIT_EXPECT_PTR_EQ(test, left, right) \ + KUNIT_BINARY_PTR_EQ_ASSERTION(test, \ + KUNIT_EXPECTATION, \ + left, \ + right) + +#define KUNIT_EXPECT_PTR_EQ_MSG(test, left, right, fmt, ...) \ + KUNIT_BINARY_PTR_EQ_MSG_ASSERTION(test, \ + KUNIT_EXPECTATION, \ + left, \ + right, \ + fmt, \ + ##__VA_ARGS__) + +/** + * KUNIT_EXPECT_NE() - An expectation that @left and @right are not equal. + * @test: The test context object. + * @left: an arbitrary expression that evaluates to a primitive C type. + * @right: an arbitrary expression that evaluates to a primitive C type. + * + * Sets an expectation that the values that @left and @right evaluate to are not + * equal. This is semantically equivalent to + * KUNIT_EXPECT_TRUE(@test, (@left) != (@right)). See KUNIT_EXPECT_TRUE() for + * more information. + */ +#define KUNIT_EXPECT_NE(test, left, right) \ + KUNIT_BINARY_NE_ASSERTION(test, KUNIT_EXPECTATION, left, right) + +#define KUNIT_EXPECT_NE_MSG(test, left, right, fmt, ...) \ + KUNIT_BINARY_NE_MSG_ASSERTION(test, \ + KUNIT_EXPECTATION, \ + left, \ + right, \ + fmt, \ + ##__VA_ARGS__) + +/** + * KUNIT_EXPECT_PTR_NE() - Expects that pointers @left and @right are not equal. + * @test: The test context object. + * @left: an arbitrary expression that evaluates to a pointer. + * @right: an arbitrary expression that evaluates to a pointer. + * + * Sets an expectation that the values that @left and @right evaluate to are not + * equal. This is semantically equivalent to + * KUNIT_EXPECT_TRUE(@test, (@left) != (@right)). See KUNIT_EXPECT_TRUE() for + * more information. + */ +#define KUNIT_EXPECT_PTR_NE(test, left, right) \ + KUNIT_BINARY_PTR_NE_ASSERTION(test, \ + KUNIT_EXPECTATION, \ + left, \ + right) + +#define KUNIT_EXPECT_PTR_NE_MSG(test, left, right, fmt, ...) \ + KUNIT_BINARY_PTR_NE_MSG_ASSERTION(test, \ + KUNIT_EXPECTATION, \ + left, \ + right, \ + fmt, \ + ##__VA_ARGS__) + +/** + * KUNIT_EXPECT_LT() - An expectation that @left is less than @right. + * @test: The test context object. + * @left: an arbitrary expression that evaluates to a primitive C type. + * @right: an arbitrary expression that evaluates to a primitive C type. + * + * Sets an expectation that the value that @left evaluates to is less than the + * value that @right evaluates to. This is semantically equivalent to + * KUNIT_EXPECT_TRUE(@test, (@left) < (@right)). See KUNIT_EXPECT_TRUE() for + * more information. + */ +#define KUNIT_EXPECT_LT(test, left, right) \ + KUNIT_BINARY_LT_ASSERTION(test, KUNIT_EXPECTATION, left, right) + +#define KUNIT_EXPECT_LT_MSG(test, left, right, fmt, ...) \ + KUNIT_BINARY_LT_MSG_ASSERTION(test, \ + KUNIT_EXPECTATION, \ + left, \ + right, \ + fmt, \ + ##__VA_ARGS__) + +/** + * KUNIT_EXPECT_LE() - Expects that @left is less than or equal to @right. + * @test: The test context object. + * @left: an arbitrary expression that evaluates to a primitive C type. + * @right: an arbitrary expression that evaluates to a primitive C type. + * + * Sets an expectation that the value that @left evaluates to is less than or + * equal to the value that @right evaluates to. Semantically this is equivalent + * to KUNIT_EXPECT_TRUE(@test, (@left) <= (@right)). See KUNIT_EXPECT_TRUE() for + * more information. + */ +#define KUNIT_EXPECT_LE(test, left, right) \ + KUNIT_BINARY_LE_ASSERTION(test, KUNIT_EXPECTATION, left, right) + +#define KUNIT_EXPECT_LE_MSG(test, left, right, fmt, ...) \ + KUNIT_BINARY_LE_MSG_ASSERTION(test, \ + KUNIT_EXPECTATION, \ + left, \ + right, \ + fmt, \ + ##__VA_ARGS__) + +/** + * KUNIT_EXPECT_GT() - An expectation that @left is greater than @right. + * @test: The test context object. + * @left: an arbitrary expression that evaluates to a primitive C type. + * @right: an arbitrary expression that evaluates to a primitive C type. + * + * Sets an expectation that the value that @left evaluates to is greater than + * the value that @right evaluates to. This is semantically equivalent to + * KUNIT_EXPECT_TRUE(@test, (@left) > (@right)). See KUNIT_EXPECT_TRUE() for + * more information. + */ +#define KUNIT_EXPECT_GT(test, left, right) \ + KUNIT_BINARY_GT_ASSERTION(test, KUNIT_EXPECTATION, left, right) + +#define KUNIT_EXPECT_GT_MSG(test, left, right, fmt, ...) \ + KUNIT_BINARY_GT_MSG_ASSERTION(test, \ + KUNIT_EXPECTATION, \ + left, \ + right, \ + fmt, \ + ##__VA_ARGS__) + +/** + * KUNIT_EXPECT_GE() - Expects that @left is greater than or equal to @right. + * @test: The test context object. + * @left: an arbitrary expression that evaluates to a primitive C type. + * @right: an arbitrary expression that evaluates to a primitive C type. + * + * Sets an expectation that the value that @left evaluates to is greater than + * the value that @right evaluates to. This is semantically equivalent to + * KUNIT_EXPECT_TRUE(@test, (@left) >= (@right)). See KUNIT_EXPECT_TRUE() for + * more information. + */ +#define KUNIT_EXPECT_GE(test, left, right) \ + KUNIT_BINARY_GE_ASSERTION(test, KUNIT_EXPECTATION, left, right) + +#define KUNIT_EXPECT_GE_MSG(test, left, right, fmt, ...) \ + KUNIT_BINARY_GE_MSG_ASSERTION(test, \ + KUNIT_EXPECTATION, \ + left, \ + right, \ + fmt, \ + ##__VA_ARGS__) + +/** + * KUNIT_EXPECT_STREQ() - Expects that strings @left and @right are equal. + * @test: The test context object. + * @left: an arbitrary expression that evaluates to a null terminated string. + * @right: an arbitrary expression that evaluates to a null terminated string. + * + * Sets an expectation that the values that @left and @right evaluate to are + * equal. This is semantically equivalent to + * KUNIT_EXPECT_TRUE(@test, !strcmp((@left), (@right))). See KUNIT_EXPECT_TRUE() + * for more information. + */ +#define KUNIT_EXPECT_STREQ(test, left, right) \ + KUNIT_BINARY_STR_EQ_ASSERTION(test, KUNIT_EXPECTATION, left, right) + +#define KUNIT_EXPECT_STREQ_MSG(test, left, right, fmt, ...) \ + KUNIT_BINARY_STR_EQ_MSG_ASSERTION(test, \ + KUNIT_EXPECTATION, \ + left, \ + right, \ + fmt, \ + ##__VA_ARGS__) + +/** + * KUNIT_EXPECT_STRNEQ() - Expects that strings @left and @right are not equal. + * @test: The test context object. + * @left: an arbitrary expression that evaluates to a null terminated string. + * @right: an arbitrary expression that evaluates to a null terminated string. + * + * Sets an expectation that the values that @left and @right evaluate to are + * not equal. This is semantically equivalent to + * KUNIT_EXPECT_TRUE(@test, strcmp((@left), (@right))). See KUNIT_EXPECT_TRUE() + * for more information. + */ +#define KUNIT_EXPECT_STRNEQ(test, left, right) \ + KUNIT_BINARY_STR_NE_ASSERTION(test, KUNIT_EXPECTATION, left, right) + +#define KUNIT_EXPECT_STRNEQ_MSG(test, left, right, fmt, ...) \ + KUNIT_BINARY_STR_NE_MSG_ASSERTION(test, \ + KUNIT_EXPECTATION, \ + left, \ + right, \ + fmt, \ + ##__VA_ARGS__) + +/** + * KUNIT_EXPECT_NOT_ERR_OR_NULL() - Expects that @ptr is not null and not err. + * @test: The test context object. + * @ptr: an arbitrary pointer. + * + * Sets an expectation that the value that @ptr evaluates to is not null and not + * an errno stored in a pointer. This is semantically equivalent to + * KUNIT_EXPECT_TRUE(@test, !IS_ERR_OR_NULL(@ptr)). See KUNIT_EXPECT_TRUE() for + * more information. + */ +#define KUNIT_EXPECT_NOT_ERR_OR_NULL(test, ptr) \ + KUNIT_PTR_NOT_ERR_OR_NULL_ASSERTION(test, KUNIT_EXPECTATION, ptr) + +#define KUNIT_EXPECT_NOT_ERR_OR_NULL_MSG(test, ptr, fmt, ...) \ + KUNIT_PTR_NOT_ERR_OR_NULL_MSG_ASSERTION(test, \ + KUNIT_EXPECTATION, \ + ptr, \ + fmt, \ + ##__VA_ARGS__) + #endif /* _KUNIT_TEST_H */ -- cgit v1.2.3 From 5f3e06208920ee78b68cf3527f40ffbff83cb3bc Mon Sep 17 00:00:00 2001 From: Brendan Higgins Date: Mon, 23 Sep 2019 02:02:39 -0700 Subject: kunit: test: add support for test abort Add support for aborting/bailing out of test cases, which is needed for implementing assertions. An assertion is like an expectation, but bails out of the test case early if the assertion is not met. The idea with assertions is that you use them to state all the preconditions for your test. Logically speaking, these are the premises of the test case, so if a premise isn't true, there is no point in continuing the test case because there are no conclusions that can be drawn without the premises. Whereas, the expectation is the thing you are trying to prove. Signed-off-by: Brendan Higgins Reviewed-by: Greg Kroah-Hartman Reviewed-by: Logan Gunthorpe Reviewed-by: Stephen Boyd Signed-off-by: Shuah Khan --- include/kunit/test.h | 2 ++ include/kunit/try-catch.h | 75 +++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 77 insertions(+) create mode 100644 include/kunit/try-catch.h (limited to 'include/kunit') diff --git a/include/kunit/test.h b/include/kunit/test.h index 30a62de16bc9..3d554d7c1c79 100644 --- a/include/kunit/test.h +++ b/include/kunit/test.h @@ -10,6 +10,7 @@ #define _KUNIT_TEST_H #include +#include #include #include #include @@ -172,6 +173,7 @@ struct kunit { /* private: internal use only. */ const char *name; /* Read only after initialization! */ + struct kunit_try_catch try_catch; /* * success starts as true, and may only be set to false during a * test case; thus, it is safe to update this across multiple diff --git a/include/kunit/try-catch.h b/include/kunit/try-catch.h new file mode 100644 index 000000000000..404f336cbdc8 --- /dev/null +++ b/include/kunit/try-catch.h @@ -0,0 +1,75 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * An API to allow a function, that may fail, to be executed, and recover in a + * controlled manner. + * + * Copyright (C) 2019, Google LLC. + * Author: Brendan Higgins + */ + +#ifndef _KUNIT_TRY_CATCH_H +#define _KUNIT_TRY_CATCH_H + +#include + +typedef void (*kunit_try_catch_func_t)(void *); + +struct completion; +struct kunit; + +/** + * struct kunit_try_catch - provides a generic way to run code which might fail. + * @test: The test case that is currently being executed. + * @try_completion: Completion that the control thread waits on while test runs. + * @try_result: Contains any errno obtained while running test case. + * @try: The function, the test case, to attempt to run. + * @catch: The function called if @try bails out. + * @context: used to pass user data to the try and catch functions. + * + * kunit_try_catch provides a generic, architecture independent way to execute + * an arbitrary function of type kunit_try_catch_func_t which may bail out by + * calling kunit_try_catch_throw(). If kunit_try_catch_throw() is called, @try + * is stopped at the site of invocation and @catch is called. + * + * struct kunit_try_catch provides a generic interface for the functionality + * needed to implement kunit->abort() which in turn is needed for implementing + * assertions. Assertions allow stating a precondition for a test simplifying + * how test cases are written and presented. + * + * Assertions are like expectations, except they abort (call + * kunit_try_catch_throw()) when the specified condition is not met. This is + * useful when you look at a test case as a logical statement about some piece + * of code, where assertions are the premises for the test case, and the + * conclusion is a set of predicates, rather expectations, that must all be + * true. If your premises are violated, it does not makes sense to continue. + */ +struct kunit_try_catch { + /* private: internal use only. */ + struct kunit *test; + struct completion *try_completion; + int try_result; + kunit_try_catch_func_t try; + kunit_try_catch_func_t catch; + void *context; +}; + +void kunit_try_catch_init(struct kunit_try_catch *try_catch, + struct kunit *test, + kunit_try_catch_func_t try, + kunit_try_catch_func_t catch); + +void kunit_try_catch_run(struct kunit_try_catch *try_catch, void *context); + +void __noreturn kunit_try_catch_throw(struct kunit_try_catch *try_catch); + +static inline int kunit_try_catch_get_result(struct kunit_try_catch *try_catch) +{ + return try_catch->try_result; +} + +/* + * Exposed for testing only. + */ +void kunit_generic_try_catch_init(struct kunit_try_catch *try_catch); + +#endif /* _KUNIT_TRY_CATCH_H */ -- cgit v1.2.3 From e4aea8f8532b55f966d828efcf720f8aeb203e13 Mon Sep 17 00:00:00 2001 From: Brendan Higgins Date: Mon, 23 Sep 2019 02:02:41 -0700 Subject: kunit: test: add the concept of assertions Add support for assertions which are like expectations except the test terminates if the assertion is not satisfied. The idea with assertions is that you use them to state all the preconditions for your test. Logically speaking, these are the premises of the test case, so if a premise isn't true, there is no point in continuing the test case because there are no conclusions that can be drawn without the premises. Whereas, the expectation is the thing you are trying to prove. It is not used universally in x-unit style test frameworks, but I really like it as a convention. You could still express the idea of a premise using the above idiom, but I think KUNIT_ASSERT_* states the intended idea perfectly. Signed-off-by: Brendan Higgins Reviewed-by: Greg Kroah-Hartman Reviewed-by: Logan Gunthorpe Reviewed-by: Stephen Boyd Signed-off-by: Shuah Khan --- include/kunit/test.h | 282 ++++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 280 insertions(+), 2 deletions(-) (limited to 'include/kunit') diff --git a/include/kunit/test.h b/include/kunit/test.h index 3d554d7c1c79..8b7eb03d4971 100644 --- a/include/kunit/test.h +++ b/include/kunit/test.h @@ -87,8 +87,9 @@ struct kunit; * @name: the name of the test case. * * A test case is a function with the signature, - * ``void (*)(struct kunit *)`` that makes expectations (see - * KUNIT_EXPECT_TRUE()) about code under test. Each test case is associated + * ``void (*)(struct kunit *)`` + * that makes expectations and assertions (see KUNIT_EXPECT_TRUE() and + * KUNIT_ASSERT_TRUE()) about code under test. Each test case is associated * with a &struct kunit_suite and will be run after the suite's init * function and followed by the suite's exit function. * @@ -1210,4 +1211,281 @@ do { \ fmt, \ ##__VA_ARGS__) +#define KUNIT_ASSERT_FAILURE(test, fmt, ...) \ + KUNIT_FAIL_ASSERTION(test, KUNIT_ASSERTION, fmt, ##__VA_ARGS__) + +/** + * KUNIT_ASSERT_TRUE() - Sets an assertion that @condition is true. + * @test: The test context object. + * @condition: an arbitrary boolean expression. The test fails and aborts when + * this does not evaluate to true. + * + * This and assertions of the form `KUNIT_ASSERT_*` will cause the test case to + * fail *and immediately abort* when the specified condition is not met. Unlike + * an expectation failure, it will prevent the test case from continuing to run; + * this is otherwise known as an *assertion failure*. + */ +#define KUNIT_ASSERT_TRUE(test, condition) \ + KUNIT_TRUE_ASSERTION(test, KUNIT_ASSERTION, condition) + +#define KUNIT_ASSERT_TRUE_MSG(test, condition, fmt, ...) \ + KUNIT_TRUE_MSG_ASSERTION(test, \ + KUNIT_ASSERTION, \ + condition, \ + fmt, \ + ##__VA_ARGS__) + +/** + * KUNIT_ASSERT_FALSE() - Sets an assertion that @condition is false. + * @test: The test context object. + * @condition: an arbitrary boolean expression. + * + * Sets an assertion that the value that @condition evaluates to is false. This + * is the same as KUNIT_EXPECT_FALSE(), except it causes an assertion failure + * (see KUNIT_ASSERT_TRUE()) when the assertion is not met. + */ +#define KUNIT_ASSERT_FALSE(test, condition) \ + KUNIT_FALSE_ASSERTION(test, KUNIT_ASSERTION, condition) + +#define KUNIT_ASSERT_FALSE_MSG(test, condition, fmt, ...) \ + KUNIT_FALSE_MSG_ASSERTION(test, \ + KUNIT_ASSERTION, \ + condition, \ + fmt, \ + ##__VA_ARGS__) + +/** + * KUNIT_ASSERT_EQ() - Sets an assertion that @left and @right are equal. + * @test: The test context object. + * @left: an arbitrary expression that evaluates to a primitive C type. + * @right: an arbitrary expression that evaluates to a primitive C type. + * + * Sets an assertion that the values that @left and @right evaluate to are + * equal. This is the same as KUNIT_EXPECT_EQ(), except it causes an assertion + * failure (see KUNIT_ASSERT_TRUE()) when the assertion is not met. + */ +#define KUNIT_ASSERT_EQ(test, left, right) \ + KUNIT_BINARY_EQ_ASSERTION(test, KUNIT_ASSERTION, left, right) + +#define KUNIT_ASSERT_EQ_MSG(test, left, right, fmt, ...) \ + KUNIT_BINARY_EQ_MSG_ASSERTION(test, \ + KUNIT_ASSERTION, \ + left, \ + right, \ + fmt, \ + ##__VA_ARGS__) + +/** + * KUNIT_ASSERT_PTR_EQ() - Asserts that pointers @left and @right are equal. + * @test: The test context object. + * @left: an arbitrary expression that evaluates to a pointer. + * @right: an arbitrary expression that evaluates to a pointer. + * + * Sets an assertion that the values that @left and @right evaluate to are + * equal. This is the same as KUNIT_EXPECT_EQ(), except it causes an assertion + * failure (see KUNIT_ASSERT_TRUE()) when the assertion is not met. + */ +#define KUNIT_ASSERT_PTR_EQ(test, left, right) \ + KUNIT_BINARY_PTR_EQ_ASSERTION(test, KUNIT_ASSERTION, left, right) + +#define KUNIT_ASSERT_PTR_EQ_MSG(test, left, right, fmt, ...) \ + KUNIT_BINARY_PTR_EQ_MSG_ASSERTION(test, \ + KUNIT_ASSERTION, \ + left, \ + right, \ + fmt, \ + ##__VA_ARGS__) + +/** + * KUNIT_ASSERT_NE() - An assertion that @left and @right are not equal. + * @test: The test context object. + * @left: an arbitrary expression that evaluates to a primitive C type. + * @right: an arbitrary expression that evaluates to a primitive C type. + * + * Sets an assertion that the values that @left and @right evaluate to are not + * equal. This is the same as KUNIT_EXPECT_NE(), except it causes an assertion + * failure (see KUNIT_ASSERT_TRUE()) when the assertion is not met. + */ +#define KUNIT_ASSERT_NE(test, left, right) \ + KUNIT_BINARY_NE_ASSERTION(test, KUNIT_ASSERTION, left, right) + +#define KUNIT_ASSERT_NE_MSG(test, left, right, fmt, ...) \ + KUNIT_BINARY_NE_MSG_ASSERTION(test, \ + KUNIT_ASSERTION, \ + left, \ + right, \ + fmt, \ + ##__VA_ARGS__) + +/** + * KUNIT_ASSERT_PTR_NE() - Asserts that pointers @left and @right are not equal. + * KUNIT_ASSERT_PTR_EQ() - Asserts that pointers @left and @right are equal. + * @test: The test context object. + * @left: an arbitrary expression that evaluates to a pointer. + * @right: an arbitrary expression that evaluates to a pointer. + * + * Sets an assertion that the values that @left and @right evaluate to are not + * equal. This is the same as KUNIT_EXPECT_NE(), except it causes an assertion + * failure (see KUNIT_ASSERT_TRUE()) when the assertion is not met. + */ +#define KUNIT_ASSERT_PTR_NE(test, left, right) \ + KUNIT_BINARY_PTR_NE_ASSERTION(test, KUNIT_ASSERTION, left, right) + +#define KUNIT_ASSERT_PTR_NE_MSG(test, left, right, fmt, ...) \ + KUNIT_BINARY_PTR_NE_MSG_ASSERTION(test, \ + KUNIT_ASSERTION, \ + left, \ + right, \ + fmt, \ + ##__VA_ARGS__) +/** + * KUNIT_ASSERT_LT() - An assertion that @left is less than @right. + * @test: The test context object. + * @left: an arbitrary expression that evaluates to a primitive C type. + * @right: an arbitrary expression that evaluates to a primitive C type. + * + * Sets an assertion that the value that @left evaluates to is less than the + * value that @right evaluates to. This is the same as KUNIT_EXPECT_LT(), except + * it causes an assertion failure (see KUNIT_ASSERT_TRUE()) when the assertion + * is not met. + */ +#define KUNIT_ASSERT_LT(test, left, right) \ + KUNIT_BINARY_LT_ASSERTION(test, KUNIT_ASSERTION, left, right) + +#define KUNIT_ASSERT_LT_MSG(test, left, right, fmt, ...) \ + KUNIT_BINARY_LT_MSG_ASSERTION(test, \ + KUNIT_ASSERTION, \ + left, \ + right, \ + fmt, \ + ##__VA_ARGS__) +/** + * KUNIT_ASSERT_LE() - An assertion that @left is less than or equal to @right. + * @test: The test context object. + * @left: an arbitrary expression that evaluates to a primitive C type. + * @right: an arbitrary expression that evaluates to a primitive C type. + * + * Sets an assertion that the value that @left evaluates to is less than or + * equal to the value that @right evaluates to. This is the same as + * KUNIT_EXPECT_LE(), except it causes an assertion failure (see + * KUNIT_ASSERT_TRUE()) when the assertion is not met. + */ +#define KUNIT_ASSERT_LE(test, left, right) \ + KUNIT_BINARY_LE_ASSERTION(test, KUNIT_ASSERTION, left, right) + +#define KUNIT_ASSERT_LE_MSG(test, left, right, fmt, ...) \ + KUNIT_BINARY_LE_MSG_ASSERTION(test, \ + KUNIT_ASSERTION, \ + left, \ + right, \ + fmt, \ + ##__VA_ARGS__) + +/** + * KUNIT_ASSERT_GT() - An assertion that @left is greater than @right. + * @test: The test context object. + * @left: an arbitrary expression that evaluates to a primitive C type. + * @right: an arbitrary expression that evaluates to a primitive C type. + * + * Sets an assertion that the value that @left evaluates to is greater than the + * value that @right evaluates to. This is the same as KUNIT_EXPECT_GT(), except + * it causes an assertion failure (see KUNIT_ASSERT_TRUE()) when the assertion + * is not met. + */ +#define KUNIT_ASSERT_GT(test, left, right) \ + KUNIT_BINARY_GT_ASSERTION(test, KUNIT_ASSERTION, left, right) + +#define KUNIT_ASSERT_GT_MSG(test, left, right, fmt, ...) \ + KUNIT_BINARY_GT_MSG_ASSERTION(test, \ + KUNIT_ASSERTION, \ + left, \ + right, \ + fmt, \ + ##__VA_ARGS__) + +/** + * KUNIT_ASSERT_GE() - Assertion that @left is greater than or equal to @right. + * @test: The test context object. + * @left: an arbitrary expression that evaluates to a primitive C type. + * @right: an arbitrary expression that evaluates to a primitive C type. + * + * Sets an assertion that the value that @left evaluates to is greater than the + * value that @right evaluates to. This is the same as KUNIT_EXPECT_GE(), except + * it causes an assertion failure (see KUNIT_ASSERT_TRUE()) when the assertion + * is not met. + */ +#define KUNIT_ASSERT_GE(test, left, right) \ + KUNIT_BINARY_GE_ASSERTION(test, KUNIT_ASSERTION, left, right) + +#define KUNIT_ASSERT_GE_MSG(test, left, right, fmt, ...) \ + KUNIT_BINARY_GE_MSG_ASSERTION(test, \ + KUNIT_ASSERTION, \ + left, \ + right, \ + fmt, \ + ##__VA_ARGS__) + +/** + * KUNIT_ASSERT_STREQ() - An assertion that strings @left and @right are equal. + * @test: The test context object. + * @left: an arbitrary expression that evaluates to a null terminated string. + * @right: an arbitrary expression that evaluates to a null terminated string. + * + * Sets an assertion that the values that @left and @right evaluate to are + * equal. This is the same as KUNIT_EXPECT_STREQ(), except it causes an + * assertion failure (see KUNIT_ASSERT_TRUE()) when the assertion is not met. + */ +#define KUNIT_ASSERT_STREQ(test, left, right) \ + KUNIT_BINARY_STR_EQ_ASSERTION(test, KUNIT_ASSERTION, left, right) + +#define KUNIT_ASSERT_STREQ_MSG(test, left, right, fmt, ...) \ + KUNIT_BINARY_STR_EQ_MSG_ASSERTION(test, \ + KUNIT_ASSERTION, \ + left, \ + right, \ + fmt, \ + ##__VA_ARGS__) + +/** + * KUNIT_ASSERT_STRNEQ() - Expects that strings @left and @right are not equal. + * @test: The test context object. + * @left: an arbitrary expression that evaluates to a null terminated string. + * @right: an arbitrary expression that evaluates to a null terminated string. + * + * Sets an expectation that the values that @left and @right evaluate to are + * not equal. This is semantically equivalent to + * KUNIT_ASSERT_TRUE(@test, strcmp((@left), (@right))). See KUNIT_ASSERT_TRUE() + * for more information. + */ +#define KUNIT_ASSERT_STRNEQ(test, left, right) \ + KUNIT_BINARY_STR_NE_ASSERTION(test, KUNIT_ASSERTION, left, right) + +#define KUNIT_ASSERT_STRNEQ_MSG(test, left, right, fmt, ...) \ + KUNIT_BINARY_STR_NE_MSG_ASSERTION(test, \ + KUNIT_ASSERTION, \ + left, \ + right, \ + fmt, \ + ##__VA_ARGS__) + +/** + * KUNIT_ASSERT_NOT_ERR_OR_NULL() - Assertion that @ptr is not null and not err. + * @test: The test context object. + * @ptr: an arbitrary pointer. + * + * Sets an assertion that the value that @ptr evaluates to is not null and not + * an errno stored in a pointer. This is the same as + * KUNIT_EXPECT_NOT_ERR_OR_NULL(), except it causes an assertion failure (see + * KUNIT_ASSERT_TRUE()) when the assertion is not met. + */ +#define KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr) \ + KUNIT_PTR_NOT_ERR_OR_NULL_ASSERTION(test, KUNIT_ASSERTION, ptr) + +#define KUNIT_ASSERT_NOT_ERR_OR_NULL_MSG(test, ptr, fmt, ...) \ + KUNIT_PTR_NOT_ERR_OR_NULL_MSG_ASSERTION(test, \ + KUNIT_ASSERTION, \ + ptr, \ + fmt, \ + ##__VA_ARGS__) + #endif /* _KUNIT_TEST_H */ -- cgit v1.2.3 From 741a98d022362c90609ac9dcd8ad56314d8e68b3 Mon Sep 17 00:00:00 2001 From: Brendan Higgins Date: Mon, 23 Sep 2019 02:02:49 -0700 Subject: kunit: fix failure to build without printk Previously KUnit assumed that printk would always be present, which is not a valid assumption to make. Fix that by removing call to vprintk_emit, and calling printk directly. This fixes a build error[1] reported by Randy. For context this change comes after much discussion. My first stab[2] at this was just to make the KUnit logging code compile out; however, it was agreed that if we were going to use vprintk_emit, then vprintk_emit should provide a no-op stub, which lead to my second attempt[3]. In response to me trying to stub out vprintk_emit, Sergey Senozhatsky suggested a way for me to remove our usage of vprintk_emit, which led to my third attempt at solving this[4]. In my third version of this patch[4], I completely removed vprintk_emit, as suggested by Sergey; however, there was a bit of debate over whether Sergey's solution was the best. The debate arose due to Sergey's version resulting in a checkpatch warning, which resulted in a debate over correct printk usage. Joe Perches offered an alternative fix which was somewhat less far reaching than what Sergey had suggested and importantly relied on continuing to use %pV. Much of the debated centered around whether %pV should be widely used, and whether Sergey's version would result in object size bloat. Ultimately, we decided to go with Sergey's version. Reported-by: Randy Dunlap Link[1]: https://lore.kernel.org/linux-kselftest/c7229254-0d90-d90e-f3df-5b6d6fc0b51f@infradead.org/ Link[2]: https://lore.kernel.org/linux-kselftest/20190827174932.44177-1-brendanhiggins@google.com/ Link[3]: https://lore.kernel.org/linux-kselftest/20190827234835.234473-1-brendanhiggins@google.com/ Link[4]: https://lore.kernel.org/linux-kselftest/20190828093143.163302-1-brendanhiggins@google.com/ Cc: Stephen Rothwell Cc: Sergey Senozhatsky Cc: Joe Perches Cc: Tim.Bird@sony.com Signed-off-by: Brendan Higgins Acked-by: Randy Dunlap # build-tested Reviewed-by: Petr Mladek Signed-off-by: Shuah Khan --- include/kunit/test.h | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'include/kunit') diff --git a/include/kunit/test.h b/include/kunit/test.h index 8b7eb03d4971..dba48304b3bd 100644 --- a/include/kunit/test.h +++ b/include/kunit/test.h @@ -339,9 +339,8 @@ static inline void *kunit_kzalloc(struct kunit *test, size_t size, gfp_t gfp) void kunit_cleanup(struct kunit *test); -void __printf(3, 4) kunit_printk(const char *level, - const struct kunit *test, - const char *fmt, ...); +#define kunit_printk(lvl, test, fmt, ...) \ + printk(lvl "\t# %s: " fmt, (test)->name, ##__VA_ARGS__) /** * kunit_info() - Prints an INFO level message associated with @test. -- cgit v1.2.3