[PATCH] lib/glob: add more KUnit tests for glob

[Josh Law]

Since there isnt much tests for lib/glob.c, lets go ahead and add some more tests

Signed-off-by: Josh Law <objecting@xxxxxxxxxxxxx>
---
 lib/tests/glob_kunit.c | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/lib/tests/glob_kunit.c b/lib/tests/glob_kunit.c
index 362b1eda8e5b..73d4f72fa824 100644
--- a/lib/tests/glob_kunit.c
+++ b/lib/tests/glob_kunit.c
@@ -90,6 +90,31 @@ static const struct glob_test_case glob_test_cases[] = {
 	{ .pat = "*abcd*abcdef*", .str = "abcabcdabcdeabcdefg", .expected = true },
 	{ .pat = "*abcd*", .str = "abcabcabcabcefg", .expected = false },
 	{ .pat = "*ab*cd*", .str = "abcabcabcabcefg", .expected = false },
+	/* backslash escaping */
+	{ .pat = "\\a", .str = "a", .expected = true },
+	{ .pat = "\\a", .str = "\\a", .expected = false },
+	{ .pat = "\\*", .str = "*", .expected = true },
+	{ .pat = "\\*", .str = "a", .expected = false },
+	{ .pat = "\\?", .str = "?", .expected = true },
+	{ .pat = "\\?", .str = "a", .expected = false },
+	{ .pat = "\\[a]", .str = "[a]", .expected = true },
+	{ .pat = "\\\\", .str = "\\", .expected = true },
+	{ .pat = "a\\*b", .str = "a*b", .expected = true },
+	{ .pat = "a\\*b", .str = "aXb", .expected = false },
+	/* trailing backslash */
+	{ .pat = "a\\", .str = "a", .expected = true },
+	{ .pat = "\\", .str = "", .expected = true },
+	/* backwards ranges */
+	{ .pat = "[z-a]", .str = "m", .expected = false },
+	{ .pat = "[!z-a]", .str = "m", .expected = true },
+	/* high-bit characters */
+	{ .pat = "\xc0", .str = "\xc0", .expected = true },
+	{ .pat = "\xc0", .str = "\x80", .expected = false },
+	{ .pat = "[\x80-\xff]", .str = "\xc0", .expected = true },
+	{ .pat = "[\x80-\xff]", .str = "\x7f", .expected = false },
+	/* unclosed bracket as literal */
+	{ .pat = "[abc", .str = "[abc", .expected = true },
+	{ .pat = "[abc", .str = "a", .expected = false },
 };
 
 static void glob_case_to_desc(const struct glob_test_case *t, char *desc)
-- 
2.34.1