mirror of https://gitee.com/openkylin/linux.git
727 lines
18 KiB
C
727 lines
18 KiB
C
/*
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* Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by the GPLv2 license.
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*
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* kselftest_harness.h: simple C unit test helper.
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*
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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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#define _GNU_SOURCE
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <unistd.h>
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/* Utilities exposed to the test definitions */
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#ifndef TH_LOG_STREAM
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# define TH_LOG_STREAM stderr
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#endif
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#ifndef TH_LOG_ENABLED
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# define TH_LOG_ENABLED 1
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#endif
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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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if (TH_LOG_ENABLED) \
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__TH_LOG(fmt, ##__VA_ARGS__); \
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} while (0)
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/* Unconditional logger for internal use. */
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#define __TH_LOG(fmt, ...) \
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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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/**
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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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* as such. Returning early may be performed with a bare "return;" statement.
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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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#define TEST(test_name) __TEST_IMPL(test_name, -1)
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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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* as such. Returning early may be performed with a bare "return;" statement.
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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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#define TEST_SIGNAL(test_name, signal) __TEST_IMPL(test_name, signal)
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#define __TEST_IMPL(test_name, _signal) \
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static void test_name(struct __test_metadata *_metadata); \
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static struct __test_metadata _##test_name##_object = \
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{ name: "global." #test_name, \
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fn: &test_name, termsig: _signal }; \
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static void __attribute__((constructor)) _register_##test_name(void) \
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{ \
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__register_test(&_##test_name##_object); \
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} \
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static void test_name( \
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struct __test_metadata __attribute__((unused)) *_metadata)
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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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*/
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#define FIXTURE_DATA(datatype_name) struct _test_data_##datatype_name
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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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#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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{ \
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__fixture_count++; \
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} \
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FIXTURE_DATA(fixture_name)
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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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* 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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* of any dependent fixture tests.
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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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#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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/**
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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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* 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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*/
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#define FIXTURE_TEARDOWN(fixture_name) \
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void fixture_name##_teardown( \
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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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/**
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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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* datatype exposed for use by the implementation.
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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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#define TEST_F_SIGNAL(fixture_name, test_name, signal) \
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__TEST_F_IMPL(fixture_name, test_name, signal)
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#define __TEST_F_IMPL(fixture_name, test_name, signal) \
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static void fixture_name##_##test_name( \
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struct __test_metadata *_metadata, \
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FIXTURE_DATA(fixture_name) *self); \
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static inline void wrapper_##fixture_name##_##test_name( \
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struct __test_metadata *_metadata) \
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{ \
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/* fixture data is alloced, setup, and torn down per call. */ \
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FIXTURE_DATA(fixture_name) self; \
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memset(&self, 0, sizeof(FIXTURE_DATA(fixture_name))); \
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fixture_name##_setup(_metadata, &self); \
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/* Let setup failure terminate early. */ \
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if (!_metadata->passed) \
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return; \
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fixture_name##_##test_name(_metadata, &self); \
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fixture_name##_teardown(_metadata, &self); \
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} \
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static struct __test_metadata \
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_##fixture_name##_##test_name##_object = { \
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name: #fixture_name "." #test_name, \
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fn: &wrapper_##fixture_name##_##test_name, \
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termsig: signal, \
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}; \
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static void __attribute__((constructor)) \
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_register_##fixture_name##_##test_name(void) \
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{ \
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__register_test(&_##fixture_name##_##test_name##_object); \
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} \
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static void fixture_name##_##test_name( \
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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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/**
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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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#define TEST_HARNESS_MAIN \
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static void __attribute__((constructor)) \
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__constructor_order_last(void) \
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{ \
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if (!__constructor_order) \
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__constructor_order = _CONSTRUCTOR_ORDER_BACKWARD; \
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} \
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int main(int argc, char **argv) { \
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return test_harness_run(argc, argv); \
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}
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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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/**
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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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/**
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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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/**
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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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/**
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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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/**
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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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/**
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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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/**
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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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/**
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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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/**
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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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/**
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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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/**
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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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/**
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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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/**
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* EXPECT_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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* EXPECT_NE(expected, measured): expected != measured
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*/
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#define EXPECT_NE(expected, seen) \
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__EXPECT(expected, seen, !=, 0)
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/**
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* EXPECT_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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* EXPECT_LT(expected, measured): expected < measured
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*/
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#define EXPECT_LT(expected, seen) \
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__EXPECT(expected, seen, <, 0)
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/**
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* EXPECT_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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* EXPECT_LE(expected, measured): expected <= measured
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*/
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#define EXPECT_LE(expected, seen) \
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__EXPECT(expected, seen, <=, 0)
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/**
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* EXPECT_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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* EXPECT_GT(expected, measured): expected > measured
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*/
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#define EXPECT_GT(expected, seen) \
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__EXPECT(expected, seen, >, 0)
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/**
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* EXPECT_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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* EXPECT_GE(expected, measured): expected >= measured
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*/
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#define EXPECT_GE(expected, seen) \
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__EXPECT(expected, seen, >=, 0)
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/**
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* EXPECT_NULL(seen)
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*
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* @seen: measured value
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*
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* EXPECT_NULL(measured): NULL == measured
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*/
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#define EXPECT_NULL(seen) \
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__EXPECT(NULL, seen, ==, 0)
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/**
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* EXPECT_TRUE(seen)
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*
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* @seen: measured value
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*
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* EXPECT_TRUE(measured): 0 != measured
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*/
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#define EXPECT_TRUE(seen) \
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EXPECT_NE(0, seen)
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/**
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* EXPECT_FALSE(seen)
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*
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* @seen: measured value
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*
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* EXPECT_FALSE(measured): 0 == measured
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*/
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#define EXPECT_FALSE(seen) \
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EXPECT_EQ(0, seen)
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/**
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* EXPECT_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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* EXPECT_STREQ(expected, measured): !strcmp(expected, measured)
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*/
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#define EXPECT_STREQ(expected, seen) \
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__EXPECT_STR(expected, seen, ==, 0)
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/**
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* EXPECT_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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* EXPECT_STRNE(expected, measured): strcmp(expected, measured)
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*/
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#define EXPECT_STRNE(expected, seen) \
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__EXPECT_STR(expected, seen, !=, 0)
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|
|
#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
|
|
|
|
/* Support an optional handler after and ASSERT_* or EXPECT_*. The approach is
|
|
* not thread-safe, but it should be fine in most sane test scenarios.
|
|
*
|
|
* Using __bail(), which optionally abort()s, is the easiest way to early
|
|
* return while still providing an optional block to the API consumer.
|
|
*/
|
|
#define OPTIONAL_HANDLER(_assert) \
|
|
for (; _metadata->trigger; _metadata->trigger = __bail(_assert))
|
|
|
|
#define __EXPECT(_expected, _seen, _t, _assert) do { \
|
|
/* Avoid multiple evaluation of the cases */ \
|
|
__typeof__(_expected) __exp = (_expected); \
|
|
__typeof__(_seen) __seen = (_seen); \
|
|
if (!(__exp _t __seen)) { \
|
|
unsigned long long __exp_print = (uintptr_t)__exp; \
|
|
unsigned long long __seen_print = (uintptr_t)__seen; \
|
|
__TH_LOG("Expected %s (%llu) %s %s (%llu)", \
|
|
#_expected, __exp_print, #_t, \
|
|
#_seen, __seen_print); \
|
|
_metadata->passed = 0; \
|
|
/* Ensure the optional handler is triggered */ \
|
|
_metadata->trigger = 1; \
|
|
} \
|
|
} while (0); OPTIONAL_HANDLER(_assert)
|
|
|
|
#define __EXPECT_STR(_expected, _seen, _t, _assert) do { \
|
|
const char *__exp = (_expected); \
|
|
const char *__seen = (_seen); \
|
|
if (!(strcmp(__exp, __seen) _t 0)) { \
|
|
__TH_LOG("Expected '%s' %s '%s'.", __exp, #_t, __seen); \
|
|
_metadata->passed = 0; \
|
|
_metadata->trigger = 1; \
|
|
} \
|
|
} while (0); OPTIONAL_HANDLER(_assert)
|
|
|
|
/* Contains all the information for test execution and status checking. */
|
|
struct __test_metadata {
|
|
const char *name;
|
|
void (*fn)(struct __test_metadata *);
|
|
int termsig;
|
|
int passed;
|
|
int trigger; /* extra handler after the evaluation */
|
|
struct __test_metadata *prev, *next;
|
|
};
|
|
|
|
/* Storage for the (global) tests to be run. */
|
|
static struct __test_metadata *__test_list;
|
|
static unsigned int __test_count;
|
|
static unsigned int __fixture_count;
|
|
static int __constructor_order;
|
|
|
|
#define _CONSTRUCTOR_ORDER_FORWARD 1
|
|
#define _CONSTRUCTOR_ORDER_BACKWARD -1
|
|
|
|
/*
|
|
* Since constructors are called in reverse order, reverse the test
|
|
* list so tests are run in source declaration order.
|
|
* https://gcc.gnu.org/onlinedocs/gccint/Initialization.html
|
|
* However, it seems not all toolchains do this correctly, so use
|
|
* __constructor_order to detect which direction is called first
|
|
* and adjust list building logic to get things running in the right
|
|
* direction.
|
|
*/
|
|
static inline void __register_test(struct __test_metadata *t)
|
|
{
|
|
__test_count++;
|
|
/* Circular linked list where only prev is circular. */
|
|
if (__test_list == NULL) {
|
|
__test_list = t;
|
|
t->next = NULL;
|
|
t->prev = t;
|
|
return;
|
|
}
|
|
if (__constructor_order == _CONSTRUCTOR_ORDER_FORWARD) {
|
|
t->next = NULL;
|
|
t->prev = __test_list->prev;
|
|
t->prev->next = t;
|
|
__test_list->prev = t;
|
|
} else {
|
|
t->next = __test_list;
|
|
t->next->prev = t;
|
|
t->prev = t;
|
|
__test_list = t;
|
|
}
|
|
}
|
|
|
|
static inline int __bail(int for_realz)
|
|
{
|
|
if (for_realz)
|
|
abort();
|
|
return 0;
|
|
}
|
|
|
|
void __run_test(struct __test_metadata *t)
|
|
{
|
|
pid_t child_pid;
|
|
int status;
|
|
|
|
t->passed = 1;
|
|
t->trigger = 0;
|
|
printf("[ RUN ] %s\n", t->name);
|
|
child_pid = fork();
|
|
if (child_pid < 0) {
|
|
printf("ERROR SPAWNING TEST CHILD\n");
|
|
t->passed = 0;
|
|
} else if (child_pid == 0) {
|
|
t->fn(t);
|
|
_exit(t->passed);
|
|
} else {
|
|
/* TODO(wad) add timeout support. */
|
|
waitpid(child_pid, &status, 0);
|
|
if (WIFEXITED(status)) {
|
|
t->passed = t->termsig == -1 ? WEXITSTATUS(status) : 0;
|
|
if (t->termsig != -1) {
|
|
fprintf(TH_LOG_STREAM,
|
|
"%s: Test exited normally "
|
|
"instead of by signal (code: %d)\n",
|
|
t->name,
|
|
WEXITSTATUS(status));
|
|
}
|
|
} else if (WIFSIGNALED(status)) {
|
|
t->passed = 0;
|
|
if (WTERMSIG(status) == SIGABRT) {
|
|
fprintf(TH_LOG_STREAM,
|
|
"%s: Test terminated by assertion\n",
|
|
t->name);
|
|
} else if (WTERMSIG(status) == t->termsig) {
|
|
t->passed = 1;
|
|
} else {
|
|
fprintf(TH_LOG_STREAM,
|
|
"%s: Test terminated unexpectedly "
|
|
"by signal %d\n",
|
|
t->name,
|
|
WTERMSIG(status));
|
|
}
|
|
} else {
|
|
fprintf(TH_LOG_STREAM,
|
|
"%s: Test ended in some other way [%u]\n",
|
|
t->name,
|
|
status);
|
|
}
|
|
}
|
|
printf("[ %4s ] %s\n", (t->passed ? "OK" : "FAIL"), t->name);
|
|
}
|
|
|
|
static int test_harness_run(int __attribute__((unused)) argc,
|
|
char __attribute__((unused)) **argv)
|
|
{
|
|
struct __test_metadata *t;
|
|
int ret = 0;
|
|
unsigned int count = 0;
|
|
unsigned int pass_count = 0;
|
|
|
|
/* TODO(wad) add optional arguments similar to gtest. */
|
|
printf("[==========] Running %u tests from %u test cases.\n",
|
|
__test_count, __fixture_count + 1);
|
|
for (t = __test_list; t; t = t->next) {
|
|
count++;
|
|
__run_test(t);
|
|
if (t->passed)
|
|
pass_count++;
|
|
else
|
|
ret = 1;
|
|
}
|
|
printf("[==========] %u / %u tests passed.\n", pass_count, count);
|
|
printf("[ %s ]\n", (ret ? "FAILED" : "PASSED"));
|
|
return ret;
|
|
}
|
|
|
|
static void __attribute__((constructor)) __constructor_order_first(void)
|
|
{
|
|
if (!__constructor_order)
|
|
__constructor_order = _CONSTRUCTOR_ORDER_FORWARD;
|
|
}
|
|
|
|
#endif /* __KSELFTEST_HARNESS_H */
|