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2024-05-06kunit: string-stream-test: use KUNIT_DEFINE_ACTION_WRAPPERIvan Orlov1-10/+2
Use KUNIT_DEFINE_ACTION_WRAPPER macro to define the 'kfree' and 'string_stream_destroy' wrappers for kunit_add_action. Signed-off-by: Ivan Orlov <ivan.orlov0322@gmail.com> Reviewed-by: Rae Moar <rmoar@google.com> Acked-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2023-12-18kunit: string-stream-test: Avoid cast warning when testing gfp_t flagsRichard Fitzgerald1-1/+1
Passing a gfp_t to KUNIT_EXPECT_EQ() causes a cast warning: lib/kunit/string-stream-test.c:73:9: sparse: sparse: incorrect type in initializer (different base types) expected long long right_value got restricted gfp_t const __right Avoid this by testing stream->gfp for the expected value and passing the boolean result of this comparison to KUNIT_EXPECT_TRUE(), as was already done a few lines above in string_stream_managed_init_test(). Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Fixes: d1a0d699bfc0 ("kunit: string-stream: Add tests for freeing resource-managed string_stream") Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202311181918.0mpCu2Xh-lkp@intel.com/ Reviewed-by: Rae Moar <rmoar@google.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2023-09-18kunit: string-stream: Test performance of string_streamRichard Fitzgerald1-0/+54
Add a test of the speed and memory use of string_stream. string_stream_performance_test() doesn't actually "test" anything (it cannot fail unless the system has run out of allocatable memory) but it measures the speed and memory consumption of the string_stream and reports the result. This allows changes in the string_stream implementation to be compared. Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2023-09-18kunit: string-stream: Add tests for freeing resource-managed string_streamRichard Fitzgerald1-5/+142
string_stream_managed_free_test() allocates a resource-managed string_stream and tests that kunit_free_string_stream() calls string_stream_destroy(). string_stream_resource_free_test() allocates a resource-managed string_stream and tests that string_stream_destroy() is called when the test resources are cleaned up. The old string_stream_init_test() has been split into two tests, one for kunit_alloc_string_stream() and the other for alloc_string_stream(). Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2023-09-18kunit: string-stream: Decouple string_stream from kunitRichard Fitzgerald1-1/+7
Re-work string_stream so that it is not tied to a struct kunit. This is to allow using it for the log of struct kunit_suite. Instead of resource-managing individual allocations the whole string_stream can be resource-managed, if required. alloc_string_stream() now allocates a string stream that is not resource-managed. string_stream_destroy() now works on an unmanaged string_stream allocated by alloc_string_stream() and frees the entire string_stream (previously it only freed the fragments). string_stream_clear() has been made public for callers that want to free the fragments without destroying the string_stream. For resource-managed allocations use kunit_alloc_string_stream() and kunit_free_string_stream(). In addition to this, string_stream_get_string() now returns an unmanaged buffer that the caller must kfree(). Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2023-09-18kunit: string-stream: Add kunit_alloc_string_stream()Richard Fitzgerald1-14/+14
Add function kunit_alloc_string_stream() to do a resource-managed allocation of a string stream, and corresponding kunit_free_string_stream() to free the resource-managed stream. This is preparing for decoupling the string_stream implementation from struct kunit, to reduce the amount of code churn when that happens. Currently: - kunit_alloc_string_stream() only calls alloc_string_stream(). - kunit_free_string_stream() takes a struct kunit* which isn't used yet. Callers of the old alloc_string_stream() and string_stream_destroy() are all requesting a managed allocation so have been changed to use the new functions. alloc_string_stream() has been temporarily made static because its current behavior has been replaced with kunit_alloc_string_stream(). Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2023-09-18kunit: string-stream-test: Add cases for string_stream newline appendingRichard Fitzgerald1-0/+93
Add test cases for testing the string_stream feature that appends a newline to strings that do not already end with a newline. string_stream_no_auto_newline_test() tests with this feature disabled. Newlines should not be added or dropped. string_stream_auto_newline_test() tests with this feature enabled. Newlines should be added to lines that do not end with a newline. string_stream_append_auto_newline_test() tests appending the content of one stream to another stream when the target stream has newline appending enabled. Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Reviewed-by: Rae Moar <rmoar@google.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2023-09-18kunit: string-stream: Improve testing of string_streamRichard Fitzgerald1-16/+217
Replace the minimal tests with more-thorough testing. string_stream_init_test() tests that struct string_stream is initialized correctly. string_stream_line_add_test() adds a series of numbered lines and checks that the resulting string contains all the lines. string_stream_variable_length_line_test() adds a large number of lines of varying length to create many fragments, then tests that all lines are present. string_stream_append_test() tests various cases of using string_stream_append() to append the content of one stream to another. Adds string_stream_append_empty_string_test() to test that adding an empty string to a string_stream doesn't create a new empty fragment. Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Reviewed-by: Rae Moar <rmoar@google.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2020-01-10kunit: allow kunit tests to be loaded as a moduleAlan Maguire1-1/+1
As tests are added to kunit, it will become less feasible to execute all built tests together. By supporting modular tests we provide a simple way to do selective execution on a running system; specifying CONFIG_KUNIT=y CONFIG_KUNIT_EXAMPLE_TEST=m ...means we can simply "insmod example-test.ko" to run the tests. To achieve this we need to do the following: o export the required symbols in kunit o string-stream tests utilize non-exported symbols so for now we skip building them when CONFIG_KUNIT_TEST=m. o drivers/base/power/qos-test.c contains a few unexported interface references, namely freq_qos_read_value() and freq_constraints_init(). Both of these could be potentially defined as static inline functions in include/linux/pm_qos.h, but for now we simply avoid supporting module build for that test suite. o support a new way of declaring test suites. Because a module cannot do multiple late_initcall()s, we provide a kunit_test_suites() macro to declare multiple suites within the same module at once. o some test module names would have been too general ("test-test" and "example-test" for kunit tests, "inode-test" for ext4 tests); rename these as appropriate ("kunit-test", "kunit-example-test" and "ext4-inode-test" respectively). Also define kunit_test_suite() via kunit_test_suites() as callers in other trees may need the old definition. Co-developed-by: Knut Omang <knut.omang@oracle.com> Signed-off-by: Knut Omang <knut.omang@oracle.com> Signed-off-by: Alan Maguire <alan.maguire@oracle.com> Reviewed-by: Brendan Higgins <brendanhiggins@google.com> Acked-by: Theodore Ts'o <tytso@mit.edu> # for ext4 bits Acked-by: David Gow <davidgow@google.com> # For list-test Reported-by: kbuild test robot <lkp@intel.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2020-01-10kunit: move string-stream.h to lib/kunitAlan Maguire1-1/+2
string-stream interfaces are not intended for external use; move them from include/kunit to lib/kunit accordingly. Co-developed-by: Knut Omang <knut.omang@oracle.com> Signed-off-by: Knut Omang <knut.omang@oracle.com> Signed-off-by: Alan Maguire <alan.maguire@oracle.com> Reviewed-by: Brendan Higgins <brendanhiggins@google.com> Tested-by: Brendan Higgins <brendanhiggins@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2019-10-01kunit: test: add the concept of assertionsBrendan Higgins1-1/+1
Add support for assertions which are like expectations except the test terminates if the assertion is not satisfied. The idea with assertions is that you use them to state all the preconditions for your test. Logically speaking, these are the premises of the test case, so if a premise isn't true, there is no point in continuing the test case because there are no conclusions that can be drawn without the premises. Whereas, the expectation is the thing you are trying to prove. It is not used universally in x-unit style test frameworks, but I really like it as a convention. You could still express the idea of a premise using the above idiom, but I think KUNIT_ASSERT_* states the intended idea perfectly. Signed-off-by: Brendan Higgins <brendanhiggins@google.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Logan Gunthorpe <logang@deltatee.com> Reviewed-by: Stephen Boyd <sboyd@kernel.org> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2019-10-01kunit: test: add initial testsBrendan Higgins1-0/+52
Add a test for string stream along with a simpler example. Signed-off-by: Brendan Higgins <brendanhiggins@google.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Logan Gunthorpe <logang@deltatee.com> Reviewed-by: Stephen Boyd <sboyd@kernel.org> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>