void testStage1(void) {
char p[12];
const char* q = "Hello World";
char* s;
char* t;
unsigned k;
printf("this test should print Hello World three times\n");
for (k = 0; k < 12; k += 1) {
p[k] = q[k];
}
s = utstrdup(p);
printf(s);
printf("\n");
q = "you goofed!";
for (k = 0; k < 12; k += 1) {
p[k] = q[k];
}
printf(s);
printf("\n");
t = utstrdup(s);
utstrfree(s);
printf(t);
printf("\n");
utstrfree(t);
}
void testStage2(void) {
char c_str1[20] = "hello";
char* ut_str1;
char* ut_str2;
printf("Starting stage 2 tests\n");
strcat(c_str1, " world");
printf("%s\n", c_str1); // nothing exciting, prints "hello world"
ut_str1 = utstrdup("hello ");
ut_str1 = utstrrealloc(ut_str1, 20);
utstrcat(ut_str1, c_str1);
printf("%s\n", ut_str1); // slightly more exciting, prints "hello hello world"
utstrcat(ut_str1, " world");
printf("%s\n", ut_str1); // exciting, should print "hello hello world wo", 'cause there's not enough room for the second world
ut_str2 = utstrdup("");
ut_str2 = utstrrealloc(ut_str2, 11);
utstrcpy(ut_str2, ut_str1 + 6);
printf("%s\n", ut_str2); // back to "hello world"
ut_str2 = utstrrealloc(ut_str2, 23);
utstrcat(ut_str2, " ");
utstrcat(ut_str2, ut_str1);
printf("%s\n", ut_str2); // now should be "hello world hello hello"
utstrfree(ut_str1);
utstrfree(ut_str2);
}
void myTest(void) {
char* str1 = utstrdup("apple");
printf("%s\n", str1);
char* str2 = utstrdup("");
printf("%s\n", str2);
uint32_t str1_len = utstrlen(str1);
printf("%d\n", str1_len);
uint32_t str2_len = utstrlen(str2);
printf("%d\n", str2_len);
char* str3 = utstrcat(str1, " pickle");
printf("%s\n", str3);
char* str4 = utstrcat(str1, "");
printf("%s\n", str4);
utstrcpy(str1, "pie");
printf("%s\n", str1);
utstrcpy(str1, "big old massive hunk of yummy pie");
printf("%s\n", str1);
utstrcpy(str1, "");
printf("%s\n", str1);
utstrfree(str2);
char* str5 = utstrrealloc(str1, 20);
printf("%s\n", str5);
utstrcpy(str5, "big old massive hunk of yummy pie");
printf("%s\n", str5);
str5 = utstrrealloc(str5, 0);
printf("%s\n", str5);
utstrcpy(str5, "big old massive hunk of yummy pie");
printf("%s\n", str5);
//str4 = utstrrealloc(str5, -1); //should crash program
printf("%s\n", str4);
}
void testStage3(void) {
int k;
char* ut_str1 = utstrdup("");
ut_str1 = utstrrealloc(ut_str1, BIG); // big, big string
printf("attempting stage 3 test. This shouldn't take long...\n");
printf("(no really, it shouldn't take long, if it does, you fail this test)\n");
fflush(stdout);
for (k = 0; k < BIG; k += 1) {
utstrcat(ut_str1, "*");
}
if (ut_str1[BIG-1] != '*') {
printf("stage3 fails for not copying all the characters\n");
} else if (strlen(ut_str1) != BIG) {
printf("Hmmm, stage3 has something wrong\n");
} else {
printf("grats, stage 3 passed (unless it took a long time to print this message)\n");
}
utstrfree(ut_str1);
}
void testStage4(void) {
char p[20];
if (! isSaneHeap()) {
printf("oh goodness! you've corrupted the heap, naughty naughty\n");
return;
}
if (! isEmptyHeap()) {
printf("Uh Oh! you have a memory leak somewhere, better find it\n");
return;
}
/* if we reach this point, the heap is OK */
printf("woo HOO! the heap is OK, test 4 looks good so far, now we're going to crash...\n");
/* each of the following lines should crash the program (an assert should fail)
* try each of them in turn to make sure you're catching the obvious mistakes
* just uncomment the line and see what happens (it should crash)
*/
printf("crashing with utstrlen\n\n\n"); utstrlen("Hello World");
printf("crashing with utstrcpy\n\n\n"); utstrcpy(p, "Hello World");
printf("crashing with utstrcat\n\n\n"); utstrcat(p, "Hello World");
printf("crashing with utstrfree\n\n\n"); utstrfree((char *)malloc(20));
printf("crashing with utstrrealloc\n\n\n"); utstrrealloc((char *)malloc(20), 40);
}