Tweaks to bitset.h, established a C test framework.

tests/check_bitset.c

@@ -0,0 +1,57 @@
+#include <check.h>
+
+#include "bitset.h"
+
+START_TEST(test_bit_set)
+{
+	unsigned char num;
+	char *bits = (char*) &num;
+	
+#define TEST_BIT_SET(bit, newvalue) \
+	bit_set(bits, (bit)); \
+	fail_unless(num == (newvalue), "num was %x instead of %x", num, (newvalue));
+	
+	TEST_BIT_SET(0, 1);
+	TEST_BIT_SET(1, 3);
+	TEST_BIT_SET(2, 7);
+	TEST_BIT_SET(7, 0x87);
+}
+END_TEST
+
+START_TEST(test_bit_clear)
+{
+	unsigned char num = 255;
+	char *bits = (char*) &num;
+	
+#define TEST_BIT_CLEAR(bit, newvalue) \
+	bit_clear(bits, (bit)); \
+	fail_unless(num == (newvalue), "num was %x instead of %x", num, (newvalue));
+	
+	TEST_BIT_CLEAR(0, 0xfe);
+	TEST_BIT_CLEAR(1, 0xfc);
+	TEST_BIT_CLEAR(2, 0xf8);
+	TEST_BIT_CLEAR(7, 0x78);
+}
+END_TEST
+
+Suite* bitset_suite()
+{
+	Suite *s = suite_create("bitset");
+	TCase *tc_core = tcase_create("bitset");
+	tcase_add_test(tc_core, test_bit_set);
+	tcase_add_test(tc_core, test_bit_clear);
+	suite_add_tcase(s, tc_core);
+	
+	return s;
+}
+
+int main(void)
+{
+	int number_failed;
+	Suite *s = bitset_suite();
+	SRunner *sr = srunner_create(s);
+	srunner_run_all(sr, CK_NORMAL);
+	number_failed = srunner_ntests_failed(sr);
+	srunner_free(sr);
+	return (number_failed == 0) ? 0 : 1;
+}