Add support for assertions which are like expectations except the test terminates if the assertion is not satisfied.
Signed-off-by: Brendan Higgins brendanhiggins@google.com --- include/kunit/test.h | 397 ++++++++++++++++++++++++++++++++++++- kunit/string-stream-test.c | 12 +- kunit/test-test.c | 2 + kunit/test.c | 33 +++ 4 files changed, 435 insertions(+), 9 deletions(-)
diff --git a/include/kunit/test.h b/include/kunit/test.h index cd02dca96eb61..c42c67a9729fd 100644 --- a/include/kunit/test.h +++ b/include/kunit/test.h @@ -84,9 +84,10 @@ struct kunit; * @name: the name of the test case. * * A test case is a function with the signature, ``void (*)(struct kunit *)`` - * that makes expectations (see KUNIT_EXPECT_TRUE()) about code under test. Each - * test case is associated with a &struct kunit_module and will be run after the - * module's init function and followed by the module's exit function. + * that makes expectations and assertions (see KUNIT_EXPECT_TRUE() and + * KUNIT_ASSERT_TRUE()) about code under test. Each test case is associated with + * a &struct kunit_module and will be run after the module's init function and + * followed by the module's exit function. * * A test case should be static and should only be created with the KUNIT_CASE() * macro; additionally, every array of test cases should be terminated with an @@ -712,4 +713,394 @@ static inline void kunit_expect_binary(struct kunit *test, KUNIT_EXPECT_END(test, !IS_ERR_OR_NULL(__ptr), __stream); \ } while (0)
+static inline struct kunit_stream *kunit_assert_start(struct kunit *test, + const char *file, + const char *line) +{ + struct kunit_stream *stream = kunit_new_stream(test); + + stream->add(stream, "ASSERTION FAILED at %s:%s\n\t", file, line); + + return stream; +} + +static inline void kunit_assert_end(struct kunit *test, + bool success, + struct kunit_stream *stream) +{ + if (!success) { + test->fail(test, stream); + test->abort(test); + } else { + stream->clear(stream); + } +} + +#define KUNIT_ASSERT_START(test) \ + kunit_assert_start(test, __FILE__, __stringify(__LINE__)) + +#define KUNIT_ASSERT_END(test, success, stream) \ + kunit_assert_end(test, success, stream) + +#define KUNIT_ASSERT(test, success, message) do { \ + struct kunit_stream *__stream = KUNIT_ASSERT_START(test); \ + \ + __stream->add(__stream, message); \ + KUNIT_ASSERT_END(test, success, __stream); \ +} while (0) + +#define KUNIT_ASSERT_MSG(test, success, message, fmt, ...) do { \ + struct kunit_stream *__stream = KUNIT_ASSERT_START(test); \ + \ + __stream->add(__stream, message); \ + __stream->add(__stream, fmt, ##__VA_ARGS__); \ + KUNIT_ASSERT_END(test, success, __stream); \ +} while (0) + +#define KUNIT_ASSERT_FAILURE(test, fmt, ...) \ + KUNIT_ASSERT_MSG(test, false, "", fmt, ##__VA_ARGS__) + +/** + * KUNIT_ASSERT_TRUE() - Sets an assertion that @condition is true. + * @test: The test context object. + * @condition: an arbitrary boolean expression. The test fails and aborts when + * this does not evaluate to true. + * + * This and assertions of the form `KUNIT_ASSERT_*` will cause the test case to + * fail *and immediately abort* when the specified condition is not met. Unlike + * an expectation failure, it will prevent the test case from continuing to run; + * this is otherwise known as an *assertion failure*. + */ +#define KUNIT_ASSERT_TRUE(test, condition) \ + KUNIT_ASSERT(test, (condition), \ + "Asserted " #condition " is true, but is false.") + +#define KUNIT_ASSERT_TRUE_MSG(test, condition, fmt, ...) \ + KUNIT_ASSERT_MSG(test, (condition), \ + "Asserted " #condition " is true, but is false.\n",\ + fmt, ##__VA_ARGS__) + +/** + * KUNIT_ASSERT_FALSE() - Sets an assertion that @condition is false. + * @test: The test context object. + * @condition: an arbitrary boolean expression. + * + * Sets an assertion that the value that @condition evaluates to is false. This + * is the same as KUNIT_EXPECT_FALSE(), except it causes an assertion failure + * (see KUNIT_ASSERT_TRUE()) when the assertion is not met. + */ +#define KUNIT_ASSERT_FALSE(test, condition) \ + KUNIT_ASSERT(test, !(condition), \ + "Asserted " #condition " is false, but is true.") + +#define KUNIT_ASSERT_FALSE_MSG(test, condition, fmt, ...) \ + KUNIT_ASSERT_MSG(test, !(condition), \ + "Asserted " #condition " is false, but is true.\n",\ + fmt, ##__VA_ARGS__) + +void kunit_assert_binary_msg(struct kunit *test, + long long left, const char *left_name, + long long right, const char *right_name, + bool compare_result, + const char *compare_name, + const char *file, + const char *line, + const char *fmt, ...); + +static inline void kunit_assert_binary(struct kunit *test, + long long left, const char *left_name, + long long right, const char *right_name, + bool compare_result, + const char *compare_name, + const char *file, + const char *line) +{ + kunit_assert_binary_msg(test, + left, left_name, + right, right_name, + compare_result, + compare_name, + file, + line, + NULL); +} + +/* + * A factory macro for defining the expectations for the basic comparisons + * defined for the built in types. + * + * Unfortunately, there is no common type that all types can be promoted to for + * which all the binary operators behave the same way as for the actual types + * (for example, there is no type that long long and unsigned long long can + * both be cast to where the comparison result is preserved for all values). So + * the best we can do is do the comparison in the original types and then coerce + * everything to long long for printing; this way, the comparison behaves + * correctly and the printed out value usually makes sense without + * interpretation, but can always be interpretted to figure out the actual + * value. + */ +#define KUNIT_ASSERT_BINARY(test, left, condition, right) do { \ + typeof(left) __left = (left); \ + typeof(right) __right = (right); \ + kunit_assert_binary(test, \ + (long long) __left, #left, \ + (long long) __right, #right, \ + __left condition __right, #condition, \ + __FILE__, __stringify(__LINE__)); \ +} while (0) + +#define KUNIT_ASSERT_BINARY_MSG(test, left, condition, right, fmt, ...) do { \ + typeof(left) __left = (left); \ + typeof(right) __right = (right); \ + kunit_assert_binary_msg(test, \ + (long long) __left, #left, \ + (long long) __right, #right, \ + __left condition __right, #condition, \ + __FILE__, __stringify(__LINE__), \ + fmt, ##__VA_ARGS__); \ +} while (0) + +/** + * KUNIT_ASSERT_EQ() - Sets an assertion that @left and @right are equal. + * @test: The test context object. + * @left: an arbitrary expression that evaluates to a primitive C type. + * @right: an arbitrary expression that evaluates to a primitive C type. + * + * Sets an assertion that the values that @left and @right evaluate to are + * equal. This is the same as KUNIT_EXPECT_EQ(), except it causes an assertion + * failure (see KUNIT_ASSERT_TRUE()) when the assertion is not met. + */ +#define KUNIT_ASSERT_EQ(test, left, right) \ + KUNIT_ASSERT_BINARY(test, left, ==, right) + +#define KUNIT_ASSERT_EQ_MSG(test, left, right, fmt, ...) \ + KUNIT_ASSERT_BINARY_MSG(test, \ + left, \ + ==, \ + right, \ + fmt, \ + ##__VA_ARGS__) + +/** + * KUNIT_ASSERT_NE() - An assertion that @left and @right are not equal. + * @test: The test context object. + * @left: an arbitrary expression that evaluates to a primitive C type. + * @right: an arbitrary expression that evaluates to a primitive C type. + * + * Sets an assertion that the values that @left and @right evaluate to are not + * equal. This is the same as KUNIT_EXPECT_NE(), except it causes an assertion + * failure (see KUNIT_ASSERT_TRUE()) when the assertion is not met. + */ +#define KUNIT_ASSERT_NE(test, left, right) \ + KUNIT_ASSERT_BINARY(test, left, !=, right) + +#define KUNIT_ASSERT_NE_MSG(test, left, right, fmt, ...) \ + KUNIT_ASSERT_BINARY_MSG(test, \ + left, \ + !=, \ + right, \ + fmt, \ + ##__VA_ARGS__) + +/** + * KUNIT_ASSERT_LT() - An assertion that @left is less than @right. + * @test: The test context object. + * @left: an arbitrary expression that evaluates to a primitive C type. + * @right: an arbitrary expression that evaluates to a primitive C type. + * + * Sets an assertion that the value that @left evaluates to is less than the + * value that @right evaluates to. This is the same as KUNIT_EXPECT_LT(), except + * it causes an assertion failure (see KUNIT_ASSERT_TRUE()) when the assertion + * is not met. + */ +#define KUNIT_ASSERT_LT(test, left, right) \ + KUNIT_ASSERT_BINARY(test, left, <, right) + +#define KUNIT_ASSERT_LT_MSG(test, left, right, fmt, ...) \ + KUNIT_ASSERT_BINARY_MSG(test, \ + left, \ + <, \ + right, \ + fmt, \ + ##__VA_ARGS__) +/** + * KUNIT_ASSERT_LE() - An assertion that @left is less than or equal to @right. + * @test: The test context object. + * @left: an arbitrary expression that evaluates to a primitive C type. + * @right: an arbitrary expression that evaluates to a primitive C type. + * + * Sets an assertion that the value that @left evaluates to is less than or + * equal to the value that @right evaluates to. This is the same as + * KUNIT_EXPECT_LE(), except it causes an assertion failure (see + * KUNIT_ASSERT_TRUE()) when the assertion is not met. + */ +#define KUNIT_ASSERT_LE(test, left, right) \ + KUNIT_ASSERT_BINARY(test, left, <=, right) + +#define KUNIT_ASSERT_LE_MSG(test, left, right, fmt, ...) \ + KUNIT_ASSERT_BINARY_MSG(test, \ + left, \ + <=, \ + right, \ + fmt, \ + ##__VA_ARGS__) +/** + * KUNIT_ASSERT_GT() - An assertion that @left is greater than @right. + * @test: The test context object. + * @left: an arbitrary expression that evaluates to a primitive C type. + * @right: an arbitrary expression that evaluates to a primitive C type. + * + * Sets an assertion that the value that @left evaluates to is greater than the + * value that @right evaluates to. This is the same as KUNIT_EXPECT_GT(), except + * it causes an assertion failure (see KUNIT_ASSERT_TRUE()) when the assertion + * is not met. + */ +#define KUNIT_ASSERT_GT(test, left, right) \ + KUNIT_ASSERT_BINARY(test, left, >, right) + +#define KUNIT_ASSERT_GT_MSG(test, left, right, fmt, ...) \ + KUNIT_ASSERT_BINARY_MSG(test, \ + left, \ + >, \ + right, \ + fmt, \ + ##__VA_ARGS__) + +/** + * KUNIT_ASSERT_GE() - Assertion that @left is greater than or equal to @right. + * @test: The test context object. + * @left: an arbitrary expression that evaluates to a primitive C type. + * @right: an arbitrary expression that evaluates to a primitive C type. + * + * Sets an assertion that the value that @left evaluates to is greater than the + * value that @right evaluates to. This is the same as KUNIT_EXPECT_GE(), except + * it causes an assertion failure (see KUNIT_ASSERT_TRUE()) when the assertion + * is not met. + */ +#define KUNIT_ASSERT_GE(test, left, right) \ + KUNIT_ASSERT_BINARY(test, left, >=, right) + +#define KUNIT_ASSERT_GE_MSG(test, left, right, fmt, ...) \ + KUNIT_ASSERT_BINARY_MSG(test, \ + left, \ + >=, \ + right, \ + fmt, \ + ##__VA_ARGS__) + +/** + * KUNIT_ASSERT_STREQ() - An assertion that strings @left and @right are equal. + * @test: The test context object. + * @left: an arbitrary expression that evaluates to a null terminated string. + * @right: an arbitrary expression that evaluates to a null terminated string. + * + * Sets an assertion that the values that @left and @right evaluate to are + * equal. This is the same as KUNIT_EXPECT_STREQ(), except it causes an + * assertion failure (see KUNIT_ASSERT_TRUE()) when the assertion is not met. + */ +#define KUNIT_ASSERT_STREQ(test, left, right) do { \ + struct kunit_stream *__stream = KUNIT_ASSERT_START(test); \ + typeof(left) __left = (left); \ + typeof(right) __right = (right); \ + \ + __stream->add(__stream, "Asserted " #left " == " #right ", but\n"); \ + __stream->add(__stream, "\t\t%s == %s\n", #left, __left); \ + __stream->add(__stream, "\t\t%s == %s\n", #right, __right); \ + \ + KUNIT_ASSERT_END(test, !strcmp(left, right), __stream); \ +} while (0) + +#define KUNIT_ASSERT_STREQ_MSG(test, left, right, fmt, ...) do { \ + struct kunit_stream *__stream = KUNIT_ASSERT_START(test); \ + typeof(left) __left = (left); \ + typeof(right) __right = (right); \ + \ + __stream->add(__stream, "Asserted " #left " == " #right ", but\n"); \ + __stream->add(__stream, "\t\t%s == %s\n", #left, __left); \ + __stream->add(__stream, "\t\t%s == %s\n", #right, __right); \ + __stream->add(__stream, fmt, ##__VA_ARGS__); \ + \ + KUNIT_ASSERT_END(test, !strcmp(left, right), __stream); \ +} while (0) + +/** + * KUNIT_ASSERT_STRNEQ() - Expects that strings @left and @right are not equal. + * @test: The test context object. + * @left: an arbitrary expression that evaluates to a null terminated string. + * @right: an arbitrary expression that evaluates to a null terminated string. + * + * Sets an expectation that the values that @left and @right evaluate to are + * not equal. This is semantically equivalent to + * KUNIT_ASSERT_TRUE(@test, strcmp((@left), (@right))). See KUNIT_ASSERT_TRUE() + * for more information. + */ +#define KUNIT_ASSERT_STRNEQ(test, left, right) do { \ + struct kunit_stream *__stream = KUNIT_ASSERT_START(test); \ + typeof(left) __left = (left); \ + typeof(right) __right = (right); \ + \ + __stream->add(__stream, "Asserted " #left " == " #right ", but\n"); \ + __stream->add(__stream, "\t\t%s == %s\n", #left, __left); \ + __stream->add(__stream, "\t\t%s == %s\n", #right, __right); \ + \ + KUNIT_ASSERT_END(test, strcmp(left, right), __stream); \ +} while (0) + +#define KUNIT_ASSERT_STRNEQ_MSG(test, left, right, fmt, ...) do { \ + struct kunit_stream *__stream = KUNIT_ASSERT_START(test); \ + typeof(left) __left = (left); \ + typeof(right) __right = (right); \ + \ + __stream->add(__stream, "Asserted " #left " == " #right ", but\n"); \ + __stream->add(__stream, "\t\t%s == %s\n", #left, __left); \ + __stream->add(__stream, "\t\t%s == %s\n", #right, __right); \ + __stream->add(__stream, fmt, ##__VA_ARGS__); \ + \ + KUNIT_ASSERT_END(test, strcmp(left, right), __stream); \ +} while (0) + +/** + * KUNIT_ASSERT_NOT_ERR_OR_NULL() - Assertion that @ptr is not null and not err. + * @test: The test context object. + * @ptr: an arbitrary pointer. + * + * Sets an assertion that the value that @ptr evaluates to is not null and not + * an errno stored in a pointer. This is the same as + * KUNIT_EXPECT_NOT_ERR_OR_NULL(), except it causes an assertion failure (see + * KUNIT_ASSERT_TRUE()) when the assertion is not met. + */ +#define KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr) do { \ + struct kunit_stream *__stream = KUNIT_ASSERT_START(test); \ + typeof(ptr) __ptr = (ptr); \ + \ + if (!__ptr) \ + __stream->add(__stream, \ + "Asserted " #ptr " is not null, but is."); \ + if (IS_ERR(__ptr)) \ + __stream->add(__stream, \ + "Asserted " #ptr " is not error, but is: %ld", \ + PTR_ERR(__ptr)); \ + \ + KUNIT_ASSERT_END(test, !IS_ERR_OR_NULL(__ptr), __stream); \ +} while (0) + +#define KUNIT_ASSERT_NOT_ERR_OR_NULL_MSG(test, ptr, fmt, ...) do { \ + struct kunit_stream *__stream = KUNIT_ASSERT_START(test); \ + typeof(ptr) __ptr = (ptr); \ + \ + if (!__ptr) { \ + __stream->add(__stream, \ + "Asserted " #ptr " is not null, but is."); \ + __stream->add(__stream, fmt, ##__VA_ARGS__); \ + } \ + if (IS_ERR(__ptr)) { \ + __stream->add(__stream, \ + "Asserted " #ptr " is not error, but is: %ld", \ + PTR_ERR(__ptr)); \ + \ + __stream->add(__stream, fmt, ##__VA_ARGS__); \ + } \ + KUNIT_ASSERT_END(test, !IS_ERR_OR_NULL(__ptr), __stream); \ +} while (0) + #endif /* _KUNIT_TEST_H */ diff --git a/kunit/string-stream-test.c b/kunit/string-stream-test.c index 6cfef69568011..441afd11b43de 100644 --- a/kunit/string-stream-test.c +++ b/kunit/string-stream-test.c @@ -19,7 +19,7 @@ static void string_stream_test_get_string(struct kunit *test) stream->add(stream, " %s", "bar");
output = stream->get_string(stream); - KUNIT_EXPECT_STREQ(test, output, "Foo bar"); + KUNIT_ASSERT_STREQ(test, output, "Foo bar"); kfree(output); destroy_string_stream(stream); } @@ -34,16 +34,16 @@ static void string_stream_test_add_and_clear(struct kunit *test) stream->add(stream, "A");
output = stream->get_string(stream); - KUNIT_EXPECT_STREQ(test, output, "AAAAAAAAAA"); - KUNIT_EXPECT_EQ(test, stream->length, 10); - KUNIT_EXPECT_FALSE(test, stream->is_empty(stream)); + KUNIT_ASSERT_STREQ(test, output, "AAAAAAAAAA"); + KUNIT_ASSERT_EQ(test, stream->length, 10); + KUNIT_ASSERT_FALSE(test, stream->is_empty(stream)); kfree(output);
stream->clear(stream);
output = stream->get_string(stream); - KUNIT_EXPECT_STREQ(test, output, ""); - KUNIT_EXPECT_TRUE(test, stream->is_empty(stream)); + KUNIT_ASSERT_STREQ(test, output, ""); + KUNIT_ASSERT_TRUE(test, stream->is_empty(stream)); destroy_string_stream(stream); }
diff --git a/kunit/test-test.c b/kunit/test-test.c index a936c041f1c8f..0b4ad6690310d 100644 --- a/kunit/test-test.c +++ b/kunit/test-test.c @@ -100,11 +100,13 @@ static int kunit_try_catch_test_init(struct kunit *test) struct kunit_try_catch_test_context *ctx;
ctx = kunit_kzalloc(test, sizeof(*ctx), GFP_KERNEL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx); test->priv = ctx;
ctx->try_catch = kunit_kmalloc(test, sizeof(*ctx->try_catch), GFP_KERNEL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx->try_catch); kunit_try_catch_init(ctx->try_catch); ctx->try_catch->context.test = test;
diff --git a/kunit/test.c b/kunit/test.c index 6e5244642ab07..9cc8ecdb079b0 100644 --- a/kunit/test.c +++ b/kunit/test.c @@ -495,3 +495,36 @@ void kunit_expect_binary_msg(struct kunit *test, kunit_expect_end(test, compare_result, stream); }
+void kunit_assert_binary_msg(struct kunit *test, + long long left, const char *left_name, + long long right, const char *right_name, + bool compare_result, + const char *compare_name, + const char *file, + const char *line, + const char *fmt, ...) +{ + struct kunit_stream *stream = kunit_assert_start(test, file, line); + struct va_format vaf; + va_list args; + + stream->add(stream, + "Asserted %s %s %s, but\n", + left_name, compare_name, right_name); + stream->add(stream, "\t\t%s == %lld\n", left_name, left); + stream->add(stream, "\t\t%s == %lld", right_name, right); + + if (fmt) { + va_start(args, fmt); + + vaf.fmt = fmt; + vaf.va = &args; + + stream->add(stream, "\n%pV", &vaf); + + va_end(args); + } + + kunit_assert_end(test, compare_result, stream); +} +