linux-kernel - [PATCH v2 4/6] kunit: factor out kunit_base_assert_format() call into kunit

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Date:   Tue, 11 Jan 2022 11:42:29 -0800
From:   Daniel Latypov <dlatypov@...gle.com>
To:     brendanhiggins@...gle.com, davidgow@...gle.com
Cc:     linux-kernel@...r.kernel.org, kunit-dev@...glegroups.com,
        linux-kselftest@...r.kernel.org, skhan@...uxfoundation.org,
        torvalds@...ux-foundation.org, Daniel Latypov <dlatypov@...gle.com>
Subject: [PATCH v2 4/6] kunit: factor out kunit_base_assert_format() call into kunit_fail()

We call this function first thing for all the assertion `format()`
functions.
This is the part that prints the file and line number and assertion type
(EXPECTATION, ASSERTION).

Having it as part of the format functions lets us have the flexibility
to not print that information (or print it differently) for new
assertion types, but I think this we don't need that.

And in the future, we'd like to consider factoring that data (file,
line#, type) out of the kunit_assert struct and into a `static`
variable, as Linus suggested [1], so we'd need to extract it anyways.

[1] https://groups.google.com/g/kunit-dev/c/i3fZXgvBrfA/m/VULQg1z6BAAJ

Signed-off-by: Daniel Latypov <dlatypov@...gle.com>
Reviewed-by: David Gow <davidgow@...gle.com>
---
 lib/kunit/assert.c | 6 ------
 lib/kunit/test.c   | 1 +
 2 files changed, 1 insertion(+), 6 deletions(-)

diff --git a/lib/kunit/assert.c b/lib/kunit/assert.c
index b972bda61c0c..4d9a1295efc7 100644
--- a/lib/kunit/assert.c
+++ b/lib/kunit/assert.c
@@ -40,7 +40,6 @@ EXPORT_SYMBOL_GPL(kunit_assert_print_msg);
 void kunit_fail_assert_format(const struct kunit_assert *assert,
 			      struct string_stream *stream)
 {
-	kunit_base_assert_format(assert, stream);
 	string_stream_add(stream, "%pV", &assert->message);
 }
 EXPORT_SYMBOL_GPL(kunit_fail_assert_format);
@@ -52,7 +51,6 @@ void kunit_unary_assert_format(const struct kunit_assert *assert,
 
 	unary_assert = container_of(assert, struct kunit_unary_assert, assert);
 
-	kunit_base_assert_format(assert, stream);
 	if (unary_assert->expected_true)
 		string_stream_add(stream,
 				  KUNIT_SUBTEST_INDENT "Expected %s to be true, but is false\n",
@@ -73,7 +71,6 @@ void kunit_ptr_not_err_assert_format(const struct kunit_assert *assert,
 	ptr_assert = container_of(assert, struct kunit_ptr_not_err_assert,
 				  assert);
 
-	kunit_base_assert_format(assert, stream);
 	if (!ptr_assert->value) {
 		string_stream_add(stream,
 				  KUNIT_SUBTEST_INDENT "Expected %s is not null, but is\n",
@@ -119,7 +116,6 @@ void kunit_binary_assert_format(const struct kunit_assert *assert,
 	binary_assert = container_of(assert, struct kunit_binary_assert,
 				     assert);
 
-	kunit_base_assert_format(assert, stream);
 	string_stream_add(stream,
 			  KUNIT_SUBTEST_INDENT "Expected %s %s %s, but\n",
 			  binary_assert->left_text,
@@ -147,7 +143,6 @@ void kunit_binary_ptr_assert_format(const struct kunit_assert *assert,
 	binary_assert = container_of(assert, struct kunit_binary_ptr_assert,
 				     assert);
 
-	kunit_base_assert_format(assert, stream);
 	string_stream_add(stream,
 			  KUNIT_SUBTEST_INDENT "Expected %s %s %s, but\n",
 			  binary_assert->left_text,
@@ -187,7 +182,6 @@ void kunit_binary_str_assert_format(const struct kunit_assert *assert,
 	binary_assert = container_of(assert, struct kunit_binary_str_assert,
 				     assert);
 
-	kunit_base_assert_format(assert, stream);
 	string_stream_add(stream,
 			  KUNIT_SUBTEST_INDENT "Expected %s %s %s, but\n",
 			  binary_assert->left_text,
diff --git a/lib/kunit/test.c b/lib/kunit/test.c
index 3a52c321c280..345a9dd88c27 100644
--- a/lib/kunit/test.c
+++ b/lib/kunit/test.c
@@ -255,6 +255,7 @@ static void kunit_fail(struct kunit *test, struct kunit_assert *assert)
 		return;
 	}
 
+	kunit_base_assert_format(assert, stream);
 	assert->format(assert, stream);
 
 	kunit_print_string_stream(test, stream);
-- 
2.34.1.575.g55b058a8bb-goog