1 files changed, 91 insertions, 0 deletions
diff --git a/test/dm/serial.c b/test/dm/serial.c
new file mode 100644
index 00000000000..34c0d4db879
--- /dev/null
+++ b/test/dm/serial.c
@@ -0,0 +1,91 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2018, STMicroelectronics
+ */
+
+#include <log.h>
+#include <serial.h>
+#include <dm.h>
+#include <asm/serial.h>
+#include <dm/test.h>
+#include <test/test.h>
+#include <test/ut.h>
+
+static const char test_message[] =
+	"This is a test message\n"
+	"consisting of multiple lines\n";
+
+static int dm_test_serial(struct unit_test_state *uts)
+{
+	int i;
+	struct serial_device_info info_serial = {0};
+	struct udevice *dev_serial;
+	size_t start, putc_written;
+
+	uint value_serial;
+
+	ut_assertok(uclass_get_device_by_name(UCLASS_SERIAL, "serial",
+					      &dev_serial));
+
+	ut_assertok(serial_tstc());
+	ut_asserteq(115200, fetch_baud_from_dtb());
+	/*
+	 * test with default config which is the only one supported by
+	 * sandbox_serial driver
+	 */
+	ut_assertok(serial_setconfig(dev_serial, SERIAL_DEFAULT_CONFIG));
+	ut_assertok(serial_getconfig(dev_serial, &value_serial));
+	ut_assert(value_serial == SERIAL_DEFAULT_CONFIG);
+	ut_assertok(serial_getinfo(dev_serial, &info_serial));
+	ut_assert(info_serial.type == SERIAL_CHIP_UNKNOWN);
+	ut_assert(info_serial.addr == SERIAL_DEFAULT_ADDRESS);
+	ut_assert(info_serial.clock == SERIAL_DEFAULT_CLOCK);
+	/*
+	 * test with a parameter which is NULL pointer
+	 */
+	ut_asserteq(-EINVAL, serial_getconfig(dev_serial, NULL));
+	ut_asserteq(-EINVAL, serial_getinfo(dev_serial, NULL));
+	/*
+	 * test with a serial config which is not supported by
+	 * sandbox_serial driver: test with wrong parity
+	 */
+	ut_asserteq(-ENOTSUPP,
+		    serial_setconfig(dev_serial,
+				     SERIAL_CONFIG(SERIAL_PAR_ODD,
+						   SERIAL_8_BITS,
+						   SERIAL_ONE_STOP)));
+	/*
+	 * test with a serial config which is not supported by
+	 * sandbox_serial driver: test with wrong bits number
+	 */
+	ut_asserteq(-ENOTSUPP,
+		    serial_setconfig(dev_serial,
+				     SERIAL_CONFIG(SERIAL_PAR_NONE,
+						   SERIAL_6_BITS,
+						   SERIAL_ONE_STOP)));
+
+	/*
+	 * test with a serial config which is not supported by
+	 * sandbox_serial driver: test with wrong stop bits number
+	 */
+	ut_asserteq(-ENOTSUPP,
+		    serial_setconfig(dev_serial,
+				     SERIAL_CONFIG(SERIAL_PAR_NONE,
+						   SERIAL_8_BITS,
+						   SERIAL_TWO_STOP)));
+
+	/* Verify that putc and puts print the same number of characters */
+	sandbox_serial_endisable(false);
+	start = sandbox_serial_written();
+	for (i = 0; i < sizeof(test_message) - 1; i++)
+		serial_putc(test_message[i]);
+	putc_written = sandbox_serial_written();
+	serial_puts(test_message);
+	sandbox_serial_endisable(true);
+	ut_asserteq(putc_written - start,
+		    sandbox_serial_written() - putc_written);
+
+	return 0;
+}
+
+DM_TEST(dm_test_serial, UT_TESTF_SCAN_FDT);