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Date: Wed, 25 May 2022 08:44:41 -0700
From: Daniel Latypov <dlatypov@...gle.com>
To: brendanhiggins@...gle.com, davidgow@...gle.com
Cc: ojeda@...nel.org, linux-kernel@...r.kernel.org,
kunit-dev@...glegroups.com, linux-kselftest@...r.kernel.org,
Daniel Latypov <dlatypov@...gle.com>
Subject: [RFC PATCH 3/4] rfc: kunit: eliminate KUNIT_INIT_*_ASSERT_STRUCT macros
These macros exist because passing an initializer list to other macros
is hard.
The goal of these macros is to generate a line like
struct $ASSERT_TYPE __assertion = $APPROPRIATE_INITIALIZER;
e.g.
struct kunit_unary_assertion __assertion = {
.condition = "foo()",
.expected_true = true
};
But the challenge is you can't pass `{.condition=..., .expect_true=...}`
as a macro argument, since the comma means you're actually passing two
arguments, `{.condition=...` and `.expect_true=....}`.
So we'd made custom macros for each different initializer-list shape.
But we can work around this with the following generic macro
#define KUNIT_INIT_ASSERT(initializers...) { initializers }
Signed-off-by: Daniel Latypov <dlatypov@...gle.com>
---
include/kunit/assert.h | 48 ------------------------------------------
include/kunit/test.h | 27 +++++++++++++-----------
2 files changed, 15 insertions(+), 60 deletions(-)
diff --git a/include/kunit/assert.h b/include/kunit/assert.h
index aab5b1147df9..c041cd9fb0d4 100644
--- a/include/kunit/assert.h
+++ b/include/kunit/assert.h
@@ -90,19 +90,6 @@ void kunit_unary_assert_format(const struct kunit_assert *assert,
const struct va_format *message,
struct string_stream *stream);
-/**
- * KUNIT_INIT_UNARY_ASSERT_STRUCT() - Initializes &struct kunit_unary_assert.
- * @cond: A string representation of the expression asserted true or false.
- * @expect_true: True if of type KUNIT_{EXPECT|ASSERT}_TRUE, false otherwise.
- *
- * Initializes a &struct kunit_unary_assert. Intended to be used in
- * KUNIT_EXPECT_* and KUNIT_ASSERT_* macros.
- */
-#define KUNIT_INIT_UNARY_ASSERT_STRUCT(cond, expect_true) { \
- .condition = cond, \
- .expected_true = expect_true \
-}
-
/**
* struct kunit_ptr_not_err_assert - An expectation/assertion that a pointer is
* not NULL and not a -errno.
@@ -123,20 +110,6 @@ void kunit_ptr_not_err_assert_format(const struct kunit_assert *assert,
const struct va_format *message,
struct string_stream *stream);
-/**
- * KUNIT_INIT_PTR_NOT_ERR_ASSERT_STRUCT() - Initializes a
- * &struct kunit_ptr_not_err_assert.
- * @txt: A string representation of the expression passed to the expectation.
- * @val: The actual evaluated pointer value of the expression.
- *
- * Initializes a &struct kunit_ptr_not_err_assert. Intended to be used in
- * KUNIT_EXPECT_* and KUNIT_ASSERT_* macros.
- */
-#define KUNIT_INIT_PTR_NOT_ERR_STRUCT(txt, val) { \
- .text = txt, \
- .value = val \
-}
-
/**
* struct kunit_binary_assert_text - holds strings for &struct
* kunit_binary_assert and friends to try and make the structs smaller.
@@ -173,27 +146,6 @@ void kunit_binary_assert_format(const struct kunit_assert *assert,
const struct va_format *message,
struct string_stream *stream);
-/**
- * KUNIT_INIT_BINARY_ASSERT_STRUCT() - Initializes a binary assert like
- * kunit_binary_assert, kunit_binary_ptr_assert, etc.
- *
- * @text_: Pointer to a kunit_binary_assert_text.
- * @left_val: The actual evaluated value of the expression in the left slot.
- * @right_val: The actual evaluated value of the expression in the right slot.
- *
- * Initializes a binary assert like kunit_binary_assert,
- * kunit_binary_ptr_assert, etc. This relies on these structs having the same
- * fields but with different types for left_val/right_val.
- * This is ultimately used by binary assertion macros like KUNIT_EXPECT_EQ, etc.
- */
-#define KUNIT_INIT_BINARY_ASSERT_STRUCT(text_, \
- left_val, \
- right_val) { \
- .text = text_, \
- .left_value = left_val, \
- .right_value = right_val \
-}
-
/**
* struct kunit_binary_ptr_assert - An expectation/assertion that compares two
* pointer values (for example, KUNIT_EXPECT_PTR_EQ(test, foo, bar)).
diff --git a/include/kunit/test.h b/include/kunit/test.h
index 4a7cb7e72660..e4b54f5d2731 100644
--- a/include/kunit/test.h
+++ b/include/kunit/test.h
@@ -551,21 +551,24 @@ void kunit_do_failed_assertion(struct kunit *test,
fmt, \
##__VA_ARGS__)
+/* Helper to safely pass around an initializer list to other macros. */
+#define KUNIT_INIT_ASSERT(initializers...) { initializers }
+
#define KUNIT_UNARY_ASSERTION(test, \
assert_type, \
- condition, \
- expected_true, \
+ condition_, \
+ expected_true_, \
fmt, \
...) \
do { \
- if (likely(!!(condition) == !!expected_true)) break; \
+ if (likely(!!(condition_) == !!expected_true_)) break; \
\
_KUNIT_FAILED(test, \
assert_type, \
kunit_unary_assert, \
kunit_unary_assert_format, \
- KUNIT_INIT_UNARY_ASSERT_STRUCT(#condition, \
- expected_true), \
+ KUNIT_INIT_ASSERT(.condition=#condition_, \
+ .expected_true=expected_true_), \
fmt, \
##__VA_ARGS__); \
} while(0)
@@ -624,9 +627,9 @@ do { \
assert_type, \
assert_class, \
format_func, \
- KUNIT_INIT_BINARY_ASSERT_STRUCT(&__text, \
- __left, \
- __right), \
+ KUNIT_INIT_ASSERT(.text = &__text, \
+ .left_value = __left, \
+ .right_value = __right), \
fmt, \
##__VA_ARGS__); \
} while (0)
@@ -684,9 +687,9 @@ do { \
assert_type, \
kunit_binary_str_assert, \
kunit_binary_str_assert_format, \
- KUNIT_INIT_BINARY_ASSERT_STRUCT(&__text, \
- __left, \
- __right), \
+ KUNIT_INIT_ASSERT(.text = &__text, \
+ .left_value = __left, \
+ .right_value = __right), \
fmt, \
##__VA_ARGS__); \
} while (0)
@@ -705,7 +708,7 @@ do { \
assert_type, \
kunit_ptr_not_err_assert, \
kunit_ptr_not_err_assert_format, \
- KUNIT_INIT_PTR_NOT_ERR_STRUCT(#ptr, __ptr), \
+ KUNIT_INIT_ASSERT(.text = #ptr, .value = __ptr), \
fmt, \
##__VA_ARGS__); \
} while (0)
--
2.36.1.124.g0e6072fb45-goog
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