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Simple Unit-Testing "Library"
=============================
License: MIT
This is a simple unit-testing system that can be included in a C project
to handle unit testing.
Requirements
------------
* C89 compiler
* longjmp/setjmp support is required for recovering from errors or running
in "crash-test-only" mode.
Usage
-----
The unit tested project should contain these parts:
* alltests.h - a list of all tests
* testmain.c - containing various definitions, and the main function
* test_xyz.c - test functions + list of tests
The file called "alltests.h" which should contain a sequence of TEST_D
macro calls, for each test file, for example:
TEST_D(wheels)
TEST_D(pedals)
TEST_D(chain)
A minimal testmain.c looks like this:
#define TEST_MAIN
#include "unittest.h"
#include "alltests.h"
TESTCALLS_START
#undef TEST_D
#define TEST_D TEST_D2
#include "alltests.h"
TESTCALLS_END
/* This function is called for each test case, and should call run_test().
It can be expanded with multiple test configuration (and multiple calls
to run_test()), as well as test initialization, cleanup and checks. */
void test_handler(void)
{
run_test();
}
/* These functions are used to add extra details in messages */
void error_extra_text(void) { return NULL; }
void help_extra_text(void) { return NULL; }
void verbose_extra_text(void) { return NULL; }
int main(int argc, char **argv)
{
return test_main(argc, argv);
}
Each test file should be named test_xyz.c, for example test_wheels.c.
Here is an example:
#include "unittest.h"
#include "alltests.h"
#include "../wheel.c"
static void test_wheel_rotate(void)
{
wheel_axis_rotate(180);
tsoftassert(get_wheel_rotation() == 180);
wheel_axis_rotate(180);
tassert(get_wheel_rotation() == 360);
}
static void test_freewheel(void)
{
wheel_axis_rotate(-180);
tassert(get_wheel_rotation() == 0);
}
const TestFunctionInfo tests_wheels[] = {
TEST_INFO(test_wheel_rotate)
TEST_INFO(test_freewheel)
TEST_END
};
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