add more tests for qsort

1 files changed, 30 insertions, 0 deletions

diff --git a/tests/test_sort.c b/tests/test_sort.c
index d996df2..e564c7a 100644
--- a/tests/test_sort.c
+++ b/tests/test_sort.c
@@ -2,8 +2,35 @@
 
 #include <assert.h>
 #include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+
+
+int compareInts(const void *a, const void *b) {
+    int arg1 = *(const int *)a;
+    int arg2 = *(const int *)b;
+    return (arg1 > arg2) - (arg1 < arg2);
+}
+
+void rand_test(int n) {
+    int *arr1 = malloc(sizeof(int) * n);
+    int *arr2 = malloc(sizeof(int) * n);
+    for (int i = 0; i < n; i++) {
+        int val = rand();
+        arr1[i] = val;
+        arr2[i] = val;
+    }
+    qsort(arr1, n, sizeof(int), compareInts);
+    Int_qsort(arr2, n);
+    for (int i = 0; i < n; i++) {
+        assert(arr1[i] == arr2[i]);
+    }
+    free(arr1);
+    free(arr2);
+}
 
 int main() {
+    srand(time(NULL));
     printf("[TEST] sort\n");
 
     int arr[] = {2,4,5,7,4,6,7,8,8,5,4};
@@ -16,5 +43,8 @@ int main() {
     for (int i = 0; i < arrlen - 1; i++) {
         assert(arr[i] <= arr[i+1]);
     }
+    for (int i = 0; i < 10; i++) {
+        rand_test(rand() % 10000);
+    }
     printf("[PASS] sort\n");
 }