test-compare-functions.c

/*

Copyright (c) 2005-2008, Simon Howard

Permission to use, copy, modify, and/or distribute this software
for any purpose with or without fee is hereby granted, provided
that the above copyright notice and this permission notice appear
in all copies.

THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

 */

/* Test cases for compare functions */

#include <stdio.h>
#include <stdlib.h>
#include <assert.h>

#include "alloc-testing.h"
#include "framework.h"

#include "compare-int.h"
#include "compare-pointer.h"
#include "compare-string.h"

void test_int_compare(void)
{
	int a = 4;
	int b = 8;
	int c = 4;

	/* If first is less than second, result is negative) */

	assert(int_compare(&a, &b) < 0);

	/* If first is more than second, result is positive) */

	assert(int_compare(&b, &a) > 0);

	/* If both are equal, result is zero */

	assert(int_compare(&a, &c) == 0);
}

void test_int_equal(void)
{
	int a = 4;
	int b = 8;
	int c = 4;

	/* Returns non-zero (true) if both are equal */

	assert(int_equal(&a, &c) != 0);

	/* Returns zero (false) if not equal) */

	assert(int_equal(&a, &b) == 0);
}

void test_pointer_compare(void)
{
	int array[5];

	/* Negative if first argument is a lower memory address than
	 * the second */

	assert(pointer_compare(&array[0], &array[4]) < 0);

	/* Positive if the first argument is a higher memory address
	 * than the second */

	assert(pointer_compare(&array[3], &array[2]) > 0);

	/* Zero if the two arguments are equal */

	assert(pointer_compare(&array[4], &array[4]) == 0);
}

void test_pointer_equal(void)
{
	int a, b;

	/* Non-zero (true) if the two pointers are equal */

	assert(pointer_equal(&a, &a) != 0);

	/* Zero (false) if the two pointers are not equal */

	assert(pointer_equal(&a, &b) == 0);
}

void test_string_compare(void)
{
	char test1[] = "Apple";
	char test2[] = "Orange";
	char test3[] = "Apple";

	/* Negative if first argument should be sorted before the second */

	assert(string_compare(test1, test2) < 0);

	/* Positive if the second argument should be sorted before the first */

	assert(string_compare(test2, test1) > 0);

	/* Zero if the two arguments are equal */

	assert(string_compare(test1, test3) == 0);
}

void test_string_equal(void)
{
	char test1[] = "this is a test string";
	char test2[] = "this is a test string ";
	char test3[] = "this is a test strin";
	char test4[] = "this is a test strinG";
	char test5[] = "this is a test string";

	/* Non-zero (true) if the two strings are equal */

	assert(string_equal(test1, test5) != 0);

	/* Zero (false) if the two strings are different */

	/* Check that length affects the result */
	assert(string_equal(test1, test2) == 0);
	assert(string_equal(test1, test3) == 0);

	/* Case sensitive */
	assert(string_equal(test1, test4) == 0);
}

void test_string_nocase_compare(void)
{
	char test1[] = "Apple";
	char test2[] = "Orange";
	char test3[] = "Apple";
	char test4[] = "Alpha";
	char test5[] = "bravo";
	char test6[] = "Charlie";

	/* Negative if first argument should be sorted before the second */

	assert(string_nocase_compare(test1, test2) < 0);

	/* Positive if the second argument should be sorted before the first */

	assert(string_nocase_compare(test2, test1) > 0);

	/* Zero if the two arguments are equal */

	assert(string_nocase_compare(test1, test3) == 0);

	/* Check ordering is independent of case */

	assert(string_nocase_compare(test4, test5) < 0);
	assert(string_nocase_compare(test5, test6) < 0);
}

void test_string_nocase_equal(void)
{
	char test1[] = "this is a test string";
	char test2[] = "this is a test string ";
	char test3[] = "this is a test strin";
	char test4[] = "this is a test strinG";
	char test5[] = "this is a test string";

	/* Non-zero (true) if the two strings are equal */

	assert(string_nocase_equal(test1, test5) != 0);

	/* Zero (false) if the two strings are different */

	/* Check that length affects the result */
	assert(string_nocase_equal(test1, test2) == 0);
	assert(string_nocase_equal(test1, test3) == 0);

	/* Case insensitive */
	assert(string_nocase_equal(test1, test4) != 0);
}

static UnitTestFunction tests[] = {
	test_int_compare,
	test_int_equal,
	test_pointer_compare,
	test_pointer_equal,
	test_string_compare,
	test_string_equal,
	test_string_nocase_compare,
	test_string_nocase_equal,
	NULL
};

int main(int argc, char *argv[])
{
	run_tests(tests);

	return 0;
}