2 files changed, 94 insertions, 0 deletions
diff --git a/test/common/Makefile b/test/common/Makefile
index cc918f64e54..a5ab10f6f69 100644
--- a/test/common/Makefile
+++ b/test/common/Makefile
@@ -3,3 +3,4 @@ obj-y += cmd_ut_common.o
 obj-$(CONFIG_AUTOBOOT) += test_autoboot.o
 obj-$(CONFIG_CYCLIC) += cyclic.o
 obj-$(CONFIG_EVENT) += event.o
+obj-y += cread.o
diff --git a/test/common/cread.c b/test/common/cread.c
new file mode 100644
index 00000000000..2fdd29a265f
--- /dev/null
+++ b/test/common/cread.c
@@ -0,0 +1,93 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2023 Google LLC
+ */
+
+#include <common.h>
+#include <cli.h>
+#include <test/common.h>
+#include <test/test.h>
+#include <test/ut.h>
+
+static int cli_ch_test(struct unit_test_state *uts)
+{
+	struct cli_ch_state s_cch, *cch = &s_cch;
+
+	cli_ch_init(cch);
+
+	/* should be nothing to return at first */
+	ut_asserteq(0, cli_ch_process(cch, 0));
+
+	/* check normal entry */
+	ut_asserteq('a', cli_ch_process(cch, 'a'));
+	ut_asserteq('b', cli_ch_process(cch, 'b'));
+	ut_asserteq('c', cli_ch_process(cch, 'c'));
+	ut_asserteq(0, cli_ch_process(cch, 0));
+
+	/* send an invalid escape sequence */
+	ut_asserteq(0, cli_ch_process(cch, '\e'));
+	ut_asserteq(0, cli_ch_process(cch, '['));
+
+	/*
+	 * with the next char it sees that the sequence is invalid, so starts
+	 * emitting it
+	 */
+	ut_asserteq('\e', cli_ch_process(cch, 'X'));
+
+	/* now we set 0 bytes to empty the buffer */
+	ut_asserteq('[', cli_ch_process(cch, 0));
+	ut_asserteq('X', cli_ch_process(cch, 0));
+	ut_asserteq(0, cli_ch_process(cch, 0));
+
+	/* things are normal again */
+	ut_asserteq('a', cli_ch_process(cch, 'a'));
+	ut_asserteq(0, cli_ch_process(cch, 0));
+
+	return 0;
+}
+COMMON_TEST(cli_ch_test, 0);
+
+static int cread_test(struct unit_test_state *uts)
+{
+	int duration;
+	ulong start;
+	char buf[10];
+
+	/*
+	 * useful for debugging
+	 *
+	 * gd->flags &= ~GD_FLG_RECORD;
+	 * print_buffer(0, buf, 1, 7, 0);
+	 */
+
+	console_record_reset_enable();
+
+	/* simple input */
+	*buf = '\0';
+	ut_asserteq(4, console_in_puts("abc\n"));
+	ut_asserteq(3, cli_readline_into_buffer("-> ", buf, 1));
+	ut_asserteq_str("abc", buf);
+
+	/* try an escape sequence (cursor left after the 'c') */
+	*buf = '\0';
+	ut_asserteq(8, console_in_puts("abc\e[Dx\n"));
+	ut_asserteq(4, cli_readline_into_buffer("-> ", buf, 1));
+	ut_asserteq_str("abxc", buf);
+
+	/* invalid escape sequence */
+	*buf = '\0';
+	ut_asserteq(8, console_in_puts("abc\e[Xx\n"));
+	ut_asserteq(7, cli_readline_into_buffer("-> ", buf, 1));
+	ut_asserteq_str("abc\e[Xx", buf);
+
+	/* check timeout, should be between 1000 and 1050ms */
+	start = get_timer(0);
+	*buf = '\0';
+	ut_asserteq(-2, cli_readline_into_buffer("-> ", buf, 1));
+	duration = get_timer(start) - 1000;
+	ut_assert(duration >= 0);
+	ut_assert(duration < 50);
+
+	return 0;
+}
+COMMON_TEST(cread_test, 0);