$ aptitude show check
Package: check
State: not installed
Version: 0.9.4-3
Priority: optional
Section: devel
Maintainer: Robert Lemmen <robertle@semistable.com>
Uncompressed Size: 332k
Description: unit test framework for C
 Check features a simple interface for defining unit tests, putting little in the way of the developer. Tests are run in a separate address space, so Check can catch both assertion failures and code errors that cause
 segmentation faults or other signals. The output from unit tests can be used within source code editors and
 IDEs.

Do Makefile přidáme:

TCASES = check_open.o
CFLAGS += -ansi -pedantic -Wall
LDFLAGS += -lcheck

all: test

clean:
	rm -f *.o *~ $(TESTS)

test: run-tests
        @./run-tests

run-tests: run-tests.o $(TCASES)
        $(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS) -lcheck

Spouštění testů

/* run-tests.c */
#include <stdlib.h>
#include "tests.h"

/*
 * Create Test Suite.
 */
Suite *api_suite(void)
{
        Suite *aSuite = suite_create("API");

	/* přidáváme postupně jednotlivé testy */
        suite_add_tcase (aSuite, tc_open());

        return aSuite;
}

/*
 * MAIN
 */
int
main(void)
{
        int nf;
        Suite *s = api_suite();
	SRunner *sr = srunner_create(s);

        srunner_run_all(sr, CK_NORMAL);
        nf = srunner_ntests_failed(sr);
        srunner_free(sr);

        return (nf == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
}

tests.h

#include <check.h>

/* jednotlivé testy */
TCase *tc_open(void)

Samotný test je naprogramován v samostatném souboru check_open.c

#include "tests.h"
#include <fcntl.h>
…

/*
 *
 */
START_TEST(test_create_file) {
        int fd;

        char msg[] = "File contents.\n";

        fd = open(FILENAME, O_WRONLY|O_CREAT, 0640);
        fail_if(fd < 0, "Can't create file:" FILENAME);
        if (write(fd, msg, strlen(msg)) < 0, "Can't write to file.");
} END_TEST

TCase *tc_open()
{
        TCase *aTCase = tcase_create("open()");

        /* Add all the tests to aTCase */
        tcase_add_test(aTCase, test_create_file);

        return aTCase;
}