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kunit: make KUNIT_EXPECT_STREQ() quote values, don't print literals 

Before:
>  Expected str == "world", but
>      str == hello
>      "world" == world

After:
>  Expected str == "world", but
>      str == "hello"
<we don't need to tell the user that "world" == "world">

Note: like the literal ellision for integers, this doesn't handle the
case of
  KUNIT_EXPECT_STREQ(test, "hello", "world")
since we don't expect it to realistically happen in checked in tests.
(If you really wanted a test to fail, KUNIT_FAIL("msg") exists)

In that case, you'd get:
>  Expected "hello" == "world", but
<output for next failure>

Signed-off-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
This commit is contained in:
Daniel Latypov 2021-04-02 12:33:57 -07:00 committed by Shuah Khan
parent 2f9f21cdcd
commit acd976253c
1 changed files with 24 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
lib/kunit/assert.c
View File

@ -163,6 +163,22 @@ void kunit_binary_ptr_assert_format(const struct kunit_assert *assert,
}
EXPORT_SYMBOL_GPL(kunit_binary_ptr_assert_format);
/* Checks if KUNIT_EXPECT_STREQ() args were string literals.
* Note: `text` will have ""s where as `value` will not.
*/
static bool is_str_literal(const char *text, const char *value)
{
int len;
len = strlen(text);
if (len < 2)
return false;
if (text[0] != '\"' || text[len - 1] != '\"')
return false;
return strncmp(text + 1, value, len - 2) == 0;
}
void kunit_binary_str_assert_format(const struct kunit_assert *assert,
struct string_stream *stream)
{
@ -177,12 +193,14 @@ void kunit_binary_str_assert_format(const struct kunit_assert *assert,
binary_assert->left_text,
binary_assert->operation,
binary_assert->right_text);
string_stream_add(stream, KUNIT_SUBSUBTEST_INDENT "%s == %s\n",
binary_assert->left_text,
binary_assert->left_value);
string_stream_add(stream, KUNIT_SUBSUBTEST_INDENT "%s == %s",
binary_assert->right_text,
binary_assert->right_value);
if (!is_str_literal(binary_assert->left_text, binary_assert->left_value))
string_stream_add(stream, KUNIT_SUBSUBTEST_INDENT "%s == \"%s\"\n",
binary_assert->left_text,
binary_assert->left_value);
if (!is_str_literal(binary_assert->right_text, binary_assert->right_value))
string_stream_add(stream, KUNIT_SUBSUBTEST_INDENT "%s == \"%s\"",
binary_assert->right_text,
binary_assert->right_value);
kunit_assert_print_msg(assert, stream);
}
EXPORT_SYMBOL_GPL(kunit_binary_str_assert_format);