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Documentation/dev-tools: Add kselftest_harness documentation
Add ReST metadata to kselftest_harness.h to be able to include the comments in the Sphinx documentation. Signed-off-by: Mickaël Salaün <mic@digikod.net> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Kees Cook <keescook@chromium.org> Cc: Shuah Khan <shuah@kernel.org> Cc: Will Drewry <wad@chromium.org> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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@ -120,3 +120,36 @@ Contributing new tests (details)
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executable which is not tested by default.
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TEST_FILES, TEST_GEN_FILES mean it is the file which is used by
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test.
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Test Harness
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============
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The kselftest_harness.h file contains useful helpers to build tests. The tests
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from tools/testing/selftests/seccomp/seccomp_bpf.c can be used as example.
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Example
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-------
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.. kernel-doc:: tools/testing/selftests/kselftest_harness.h
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:doc: example
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Helpers
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-------
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.. kernel-doc:: tools/testing/selftests/kselftest_harness.h
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:functions: TH_LOG TEST TEST_SIGNAL FIXTURE FIXTURE_DATA FIXTURE_SETUP
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FIXTURE_TEARDOWN TEST_F TEST_HARNESS_MAIN
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Operators
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---------
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.. kernel-doc:: tools/testing/selftests/kselftest_harness.h
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:doc: operators
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.. kernel-doc:: tools/testing/selftests/kselftest_harness.h
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:functions: ASSERT_EQ ASSERT_NE ASSERT_LT ASSERT_LE ASSERT_GT ASSERT_GE
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ASSERT_NULL ASSERT_TRUE ASSERT_NULL ASSERT_TRUE ASSERT_FALSE
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ASSERT_STREQ ASSERT_STRNE EXPECT_EQ EXPECT_NE EXPECT_LT
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EXPECT_LE EXPECT_GT EXPECT_GE EXPECT_NULL EXPECT_TRUE
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EXPECT_FALSE EXPECT_STREQ EXPECT_STRNE
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@ -4,41 +4,49 @@
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*
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* kselftest_harness.h: simple C unit test helper.
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*
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* Usage:
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* #include "../kselftest_harness.h"
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* TEST(standalone_test) {
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* do_some_stuff;
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* EXPECT_GT(10, stuff) {
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* stuff_state_t state;
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* enumerate_stuff_state(&state);
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* TH_LOG("expectation failed with state: %s", state.msg);
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* }
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* more_stuff;
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* ASSERT_NE(some_stuff, NULL) TH_LOG("how did it happen?!");
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* last_stuff;
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* EXPECT_EQ(0, last_stuff);
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* }
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*
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* FIXTURE(my_fixture) {
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* mytype_t *data;
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* int awesomeness_level;
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* };
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* FIXTURE_SETUP(my_fixture) {
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* self->data = mytype_new();
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* ASSERT_NE(NULL, self->data);
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* }
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* FIXTURE_TEARDOWN(my_fixture) {
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* mytype_free(self->data);
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* }
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* TEST_F(my_fixture, data_is_good) {
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* EXPECT_EQ(1, is_my_data_good(self->data));
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* }
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*
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* TEST_HARNESS_MAIN
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* See documentation in Documentation/dev-tools/kselftest.rst
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*
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* API inspired by code.google.com/p/googletest
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*/
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/**
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* DOC: example
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*
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* .. code-block:: c
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*
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* #include "../kselftest_harness.h"
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*
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* TEST(standalone_test) {
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* do_some_stuff;
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* EXPECT_GT(10, stuff) {
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* stuff_state_t state;
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* enumerate_stuff_state(&state);
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* TH_LOG("expectation failed with state: %s", state.msg);
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* }
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* more_stuff;
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* ASSERT_NE(some_stuff, NULL) TH_LOG("how did it happen?!");
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* last_stuff;
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* EXPECT_EQ(0, last_stuff);
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* }
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*
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* FIXTURE(my_fixture) {
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* mytype_t *data;
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* int awesomeness_level;
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* };
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* FIXTURE_SETUP(my_fixture) {
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* self->data = mytype_new();
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* ASSERT_NE(NULL, self->data);
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* }
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* FIXTURE_TEARDOWN(my_fixture) {
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* mytype_free(self->data);
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* }
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* TEST_F(my_fixture, data_is_good) {
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* EXPECT_EQ(1, is_my_data_good(self->data));
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* }
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*
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* TEST_HARNESS_MAIN
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*/
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#ifndef __KSELFTEST_HARNESS_H
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#define __KSELFTEST_HARNESS_H
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@ -61,10 +69,20 @@
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# define TH_LOG_ENABLED 1
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#endif
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/* TH_LOG(format, ...)
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/**
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* TH_LOG(fmt, ...)
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*
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* @fmt: format string
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* @...: optional arguments
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*
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* .. code-block:: c
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*
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* TH_LOG(format, ...)
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*
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* Optional debug logging function available for use in tests.
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* Logging may be enabled or disabled by defining TH_LOG_ENABLED.
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* E.g., #define TH_LOG_ENABLED 1
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*
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* If no definition is provided, logging is enabled by default.
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*/
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#define TH_LOG(fmt, ...) do { \
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@ -77,7 +95,16 @@
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fprintf(TH_LOG_STREAM, "%s:%d:%s:" fmt "\n", \
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__FILE__, __LINE__, _metadata->name, ##__VA_ARGS__)
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/* TEST(name) { implementation }
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/**
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* TEST(test_name) - Defines the test function and creates the registration
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* stub
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*
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* @test_name: test name
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*
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* .. code-block:: c
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*
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* TEST(name) { implementation }
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*
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* Defines a test by name.
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* Names must be unique and tests must not be run in parallel. The
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* implementation containing block is a function and scoping should be treated
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@ -85,10 +112,18 @@
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*
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* EXPECT_* and ASSERT_* are valid in a TEST() { } context.
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*/
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/* Defines the test function and creates the registration stub. */
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#define TEST(test_name) __TEST_IMPL(test_name, -1)
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/* TEST_SIGNAL(name, signal) { implementation }
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/**
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* TEST_SIGNAL(test_name, signal)
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*
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* @test_name: test name
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* @signal: signal number
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*
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* .. code-block:: c
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*
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* TEST_SIGNAL(name, signal) { implementation }
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*
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* Defines a test by name and the expected term signal.
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* Names must be unique and tests must not be run in parallel. The
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* implementation containing block is a function and scoping should be treated
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@ -110,22 +145,38 @@
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static void test_name( \
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struct __test_metadata __attribute__((unused)) *_metadata)
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/* FIXTURE_DATA(datatype name)
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/**
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* FIXTURE_DATA(datatype_name) - Wraps the struct name so we have one less
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* argument to pass around
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*
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* @datatype_name: datatype name
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*
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* .. code-block:: c
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*
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* FIXTURE_DATA(datatype name)
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*
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* This call may be used when the type of the fixture data
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* is needed. In general, this should not be needed unless
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* the |self| is being passed to a helper directly.
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* the *self* is being passed to a helper directly.
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*/
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/* Wraps the struct name so we have one less argument to pass around. */
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#define FIXTURE_DATA(datatype_name) struct _test_data_##datatype_name
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/* FIXTURE(datatype name) {
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* type property1;
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* ...
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* };
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* Defines the data provided to TEST_F()-defined tests as |self|. It should be
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* populated and cleaned up using FIXTURE_SETUP and FIXTURE_TEARDOWN.
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/**
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* FIXTURE(fixture_name) - Called once per fixture to setup the data and
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* register
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*
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* @fixture_name: fixture name
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*
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* .. code-block:: c
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*
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* FIXTURE(datatype name) {
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* type property1;
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* ...
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* };
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*
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* Defines the data provided to TEST_F()-defined tests as *self*. It should be
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* populated and cleaned up using FIXTURE_SETUP() and FIXTURE_TEARDOWN().
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*/
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/* Called once per fixture to setup the data and register. */
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#define FIXTURE(fixture_name) \
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static void __attribute__((constructor)) \
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_register_##fixture_name##_data(void) \
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@ -134,9 +185,18 @@
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} \
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FIXTURE_DATA(fixture_name)
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/* FIXTURE_SETUP(fixture name) { implementation }
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/**
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* FIXTURE_SETUP(fixture_name) - Prepares the setup function for the fixture.
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* *_metadata* is included so that ASSERT_* work as a convenience
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*
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* @fixture_name: fixture name
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*
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* .. code-block:: c
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*
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* FIXTURE_SETUP(fixture name) { implementation }
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*
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* Populates the required "setup" function for a fixture. An instance of the
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* datatype defined with _FIXTURE_DATA will be exposed as |self| for the
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* datatype defined with FIXTURE_DATA() will be exposed as *self* for the
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* implementation.
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*
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* ASSERT_* are valid for use in this context and will prempt the execution
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@ -144,16 +204,21 @@
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*
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* A bare "return;" statement may be used to return early.
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*/
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/* Prepares the setup function for the fixture. |_metadata| is included
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* so that ASSERT_* work as a convenience.
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*/
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#define FIXTURE_SETUP(fixture_name) \
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void fixture_name##_setup( \
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struct __test_metadata __attribute__((unused)) *_metadata, \
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FIXTURE_DATA(fixture_name) __attribute__((unused)) *self)
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/* FIXTURE_TEARDOWN(fixture name) { implementation }
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/**
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* FIXTURE_TEARDOWN(fixture_name)
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*
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* @fixture_name: fixture name
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*
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* .. code-block:: c
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*
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* FIXTURE_TEARDOWN(fixture name) { implementation }
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*
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* Populates the required "teardown" function for a fixture. An instance of the
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* datatype defined with _FIXTURE_DATA will be exposed as |self| for the
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* datatype defined with FIXTURE_DATA() will be exposed as *self* for the
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* implementation to clean up.
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*
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* A bare "return;" statement may be used to return early.
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@ -163,15 +228,22 @@
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struct __test_metadata __attribute__((unused)) *_metadata, \
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FIXTURE_DATA(fixture_name) __attribute__((unused)) *self)
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/* TEST_F(fixture, name) { implementation }
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/**
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* TEST_F(fixture_name, test_name) - Emits test registration and helpers for
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* fixture-based test cases
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*
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* @fixture_name: fixture name
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* @test_name: test name
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*
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* .. code-block:: c
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*
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* TEST_F(fixture, name) { implementation }
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*
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* Defines a test that depends on a fixture (e.g., is part of a test case).
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* Very similar to TEST() except that |self| is the setup instance of fixture's
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* Very similar to TEST() except that *self* is the setup instance of fixture's
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* datatype exposed for use by the implementation.
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*/
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/* Emits test registration and helpers for fixture-based test
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* cases.
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* TODO(wad) register fixtures on dedicated test lists.
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*/
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/* TODO(wad) register fixtures on dedicated test lists. */
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#define TEST_F(fixture_name, test_name) \
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__TEST_F_IMPL(fixture_name, test_name, -1)
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@ -210,10 +282,15 @@
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struct __test_metadata __attribute__((unused)) *_metadata, \
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FIXTURE_DATA(fixture_name) __attribute__((unused)) *self)
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/* Use once to append a main() to the test file. E.g.,
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* TEST_HARNESS_MAIN
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/**
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* TEST_HARNESS_MAIN - Simple wrapper to run the test harness
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*
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* .. code-block:: c
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*
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* TEST_HARNESS_MAIN
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*
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* Use once to append a main() to the test file.
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*/
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/* Exports a simple wrapper to run the test harness. */
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#define TEST_HARNESS_MAIN \
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static void __attribute__((constructor)) \
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__constructor_order_last(void) \
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@ -225,79 +302,247 @@
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return test_harness_run(argc, argv); \
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}
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/*
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* Operators for use in TEST and TEST_F.
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/**
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* DOC: operators
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*
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* Operators for use in TEST() and TEST_F().
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* ASSERT_* calls will stop test execution immediately.
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* EXPECT_* calls will emit a failure warning, note it, and continue.
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*/
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/* ASSERT_EQ(expected, measured): expected == measured */
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/**
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* ASSERT_EQ(expected, seen)
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*
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* @expected: expected value
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* @seen: measured value
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*
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* ASSERT_EQ(expected, measured): expected == measured
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*/
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#define ASSERT_EQ(expected, seen) \
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__EXPECT(expected, seen, ==, 1)
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/* ASSERT_NE(expected, measured): expected != measured */
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/**
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* ASSERT_NE(expected, seen)
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*
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* @expected: expected value
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* @seen: measured value
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*
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* ASSERT_NE(expected, measured): expected != measured
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*/
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#define ASSERT_NE(expected, seen) \
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__EXPECT(expected, seen, !=, 1)
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/* ASSERT_LT(expected, measured): expected < measured */
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/**
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* ASSERT_LT(expected, seen)
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*
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* @expected: expected value
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* @seen: measured value
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*
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* ASSERT_LT(expected, measured): expected < measured
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*/
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#define ASSERT_LT(expected, seen) \
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__EXPECT(expected, seen, <, 1)
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/* ASSERT_LE(expected, measured): expected <= measured */
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/**
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* ASSERT_LE(expected, seen)
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*
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* @expected: expected value
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* @seen: measured value
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*
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* ASSERT_LE(expected, measured): expected <= measured
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*/
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#define ASSERT_LE(expected, seen) \
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__EXPECT(expected, seen, <=, 1)
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/* ASSERT_GT(expected, measured): expected > measured */
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/**
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* ASSERT_GT(expected, seen)
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*
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* @expected: expected value
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* @seen: measured value
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*
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* ASSERT_GT(expected, measured): expected > measured
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*/
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#define ASSERT_GT(expected, seen) \
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__EXPECT(expected, seen, >, 1)
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/* ASSERT_GE(expected, measured): expected >= measured */
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/**
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* ASSERT_GE(expected, seen)
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*
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* @expected: expected value
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* @seen: measured value
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*
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* ASSERT_GE(expected, measured): expected >= measured
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*/
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#define ASSERT_GE(expected, seen) \
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__EXPECT(expected, seen, >=, 1)
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/* ASSERT_NULL(measured): NULL == measured */
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/**
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* ASSERT_NULL(seen)
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*
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* @seen: measured value
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*
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* ASSERT_NULL(measured): NULL == measured
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*/
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#define ASSERT_NULL(seen) \
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__EXPECT(NULL, seen, ==, 1)
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/* ASSERT_TRUE(measured): measured != 0 */
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/**
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* ASSERT_TRUE(seen)
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*
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* @seen: measured value
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*
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* ASSERT_TRUE(measured): measured != 0
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*/
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#define ASSERT_TRUE(seen) \
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ASSERT_NE(0, seen)
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/* ASSERT_FALSE(measured): measured == 0 */
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/**
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* ASSERT_FALSE(seen)
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*
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* @seen: measured value
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*
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* ASSERT_FALSE(measured): measured == 0
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*/
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#define ASSERT_FALSE(seen) \
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ASSERT_EQ(0, seen)
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/* ASSERT_STREQ(expected, measured): !strcmp(expected, measured) */
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/**
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* ASSERT_STREQ(expected, seen)
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*
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* @expected: expected value
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* @seen: measured value
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*
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* ASSERT_STREQ(expected, measured): !strcmp(expected, measured)
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*/
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#define ASSERT_STREQ(expected, seen) \
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__EXPECT_STR(expected, seen, ==, 1)
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/* ASSERT_STRNE(expected, measured): strcmp(expected, measured) */
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/**
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* ASSERT_STRNE(expected, seen)
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*
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* @expected: expected value
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* @seen: measured value
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*
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* ASSERT_STRNE(expected, measured): strcmp(expected, measured)
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*/
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#define ASSERT_STRNE(expected, seen) \
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__EXPECT_STR(expected, seen, !=, 1)
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/* EXPECT_EQ(expected, measured): expected == measured */
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/**
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* EXPECT_EQ(expected, seen)
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*
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* @expected: expected value
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* @seen: measured value
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*
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* EXPECT_EQ(expected, measured): expected == measured
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*/
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#define EXPECT_EQ(expected, seen) \
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__EXPECT(expected, seen, ==, 0)
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/* EXPECT_NE(expected, measured): expected != measured */
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/**
|
||||
* EXPECT_NE(expected, seen)
|
||||
*
|
||||
* @expected: expected value
|
||||
* @seen: measured value
|
||||
*
|
||||
* EXPECT_NE(expected, measured): expected != measured
|
||||
*/
|
||||
#define EXPECT_NE(expected, seen) \
|
||||
__EXPECT(expected, seen, !=, 0)
|
||||
/* EXPECT_LT(expected, measured): expected < measured */
|
||||
|
||||
/**
|
||||
* EXPECT_LT(expected, seen)
|
||||
*
|
||||
* @expected: expected value
|
||||
* @seen: measured value
|
||||
*
|
||||
* EXPECT_LT(expected, measured): expected < measured
|
||||
*/
|
||||
#define EXPECT_LT(expected, seen) \
|
||||
__EXPECT(expected, seen, <, 0)
|
||||
/* EXPECT_LE(expected, measured): expected <= measured */
|
||||
|
||||
/**
|
||||
* EXPECT_LE(expected, seen)
|
||||
*
|
||||
* @expected: expected value
|
||||
* @seen: measured value
|
||||
*
|
||||
* EXPECT_LE(expected, measured): expected <= measured
|
||||
*/
|
||||
#define EXPECT_LE(expected, seen) \
|
||||
__EXPECT(expected, seen, <=, 0)
|
||||
/* EXPECT_GT(expected, measured): expected > measured */
|
||||
|
||||
/**
|
||||
* EXPECT_GT(expected, seen)
|
||||
*
|
||||
* @expected: expected value
|
||||
* @seen: measured value
|
||||
*
|
||||
* EXPECT_GT(expected, measured): expected > measured
|
||||
*/
|
||||
#define EXPECT_GT(expected, seen) \
|
||||
__EXPECT(expected, seen, >, 0)
|
||||
/* EXPECT_GE(expected, measured): expected >= measured */
|
||||
|
||||
/**
|
||||
* EXPECT_GE(expected, seen)
|
||||
*
|
||||
* @expected: expected value
|
||||
* @seen: measured value
|
||||
*
|
||||
* EXPECT_GE(expected, measured): expected >= measured
|
||||
*/
|
||||
#define EXPECT_GE(expected, seen) \
|
||||
__EXPECT(expected, seen, >=, 0)
|
||||
|
||||
/* EXPECT_NULL(measured): NULL == measured */
|
||||
/**
|
||||
* EXPECT_NULL(seen)
|
||||
*
|
||||
* @seen: measured value
|
||||
*
|
||||
* EXPECT_NULL(measured): NULL == measured
|
||||
*/
|
||||
#define EXPECT_NULL(seen) \
|
||||
__EXPECT(NULL, seen, ==, 0)
|
||||
/* EXPECT_TRUE(measured): 0 != measured */
|
||||
|
||||
/**
|
||||
* EXPECT_TRUE(seen)
|
||||
*
|
||||
* @seen: measured value
|
||||
*
|
||||
* EXPECT_TRUE(measured): 0 != measured
|
||||
*/
|
||||
#define EXPECT_TRUE(seen) \
|
||||
EXPECT_NE(0, seen)
|
||||
/* EXPECT_FALSE(measured): 0 == measured */
|
||||
|
||||
/**
|
||||
* EXPECT_FALSE(seen)
|
||||
*
|
||||
* @seen: measured value
|
||||
*
|
||||
* EXPECT_FALSE(measured): 0 == measured
|
||||
*/
|
||||
#define EXPECT_FALSE(seen) \
|
||||
EXPECT_EQ(0, seen)
|
||||
|
||||
/* EXPECT_STREQ(expected, measured): !strcmp(expected, measured) */
|
||||
/**
|
||||
* EXPECT_STREQ(expected, seen)
|
||||
*
|
||||
* @expected: expected value
|
||||
* @seen: measured value
|
||||
*
|
||||
* EXPECT_STREQ(expected, measured): !strcmp(expected, measured)
|
||||
*/
|
||||
#define EXPECT_STREQ(expected, seen) \
|
||||
__EXPECT_STR(expected, seen, ==, 0)
|
||||
/* EXPECT_STRNE(expected, measured): strcmp(expected, measured) */
|
||||
|
||||
/**
|
||||
* EXPECT_STRNE(expected, seen)
|
||||
*
|
||||
* @expected: expected value
|
||||
* @seen: measured value
|
||||
*
|
||||
* EXPECT_STRNE(expected, measured): strcmp(expected, measured)
|
||||
*/
|
||||
#define EXPECT_STRNE(expected, seen) \
|
||||
__EXPECT_STR(expected, seen, !=, 0)
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user