From 29f3d1402a27e996fba438c006c246a2c8b7f8f7 Mon Sep 17 00:00:00 2001 From: Vitaly Kuznetsov Date: Thu, 22 Oct 2015 09:03:52 +1100 Subject: [PATCH] lib/test-string_helpers.c: add string_get_size() tests Add a couple of simple tests for string_get_size(). The last one will hang the kernel without the 'lib/string_helpers.c: fix infinite loop in string_get_size()' fix. Signed-off-by: Vitaly Kuznetsov Cc: James Bottomley Cc: Andy Shevchenko Cc: Rasmus Villemoes Cc: "K. Y. Srinivasan" Signed-off-by: Andrew Morton --- lib/test-string_helpers.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/lib/test-string_helpers.c b/lib/test-string_helpers.c index 8e376efd88a4..ee67adab1346 100644 --- a/lib/test-string_helpers.c +++ b/lib/test-string_helpers.c @@ -326,6 +326,30 @@ out: kfree(out_test); } +static __init void test_string_get_size_one(u64 size, u64 blk_size, + const enum string_size_units units, + const char *exp_result) +{ + char buf[256]; + + string_get_size(size, blk_size, units, buf, sizeof(buf)); + if (!strncmp(buf, exp_result, min(sizeof(buf), strlen(exp_result)))) + return; + + pr_warn("Test 'test_string_get_size_one' failed!\n"); + pr_warn("string_get_size(size = %llu, blk_size = %llu, units = %d\n", + size, blk_size, units); + pr_warn("expected: %s, got %s\n", exp_result, buf); + +} + +static __init void test_string_get_size(void) +{ + test_string_get_size_one(16384, 512, STRING_UNITS_2, "8.00 MiB"); + test_string_get_size_one(8192, 4096, STRING_UNITS_10, "32.7 MB"); + test_string_get_size_one(1, 512, STRING_UNITS_10, "512 B"); +} + static int __init test_string_helpers_init(void) { unsigned int i; @@ -344,6 +368,9 @@ static int __init test_string_helpers_init(void) for (i = 0; i < (ESCAPE_ANY_NP | ESCAPE_HEX) + 1; i++) test_string_escape("escape 1", escape1, i, TEST_STRING_2_DICT_1); + /* Test string_get_size() */ + test_string_get_size(); + return -EINVAL; } module_init(test_string_helpers_init); -- 2.39.5