Index: src/tests/libcfa_vector.c
===================================================================
--- src/tests/libcfa_vector.c	(revision f48ed479b2cc590252b617558a8205a634cc3aca)
+++ src/tests/libcfa_vector.c	(revision ed3f3bf40f58d191ff45fa22c776d2d5244a226a)
@@ -1,21 +1,42 @@
 #include <stdlib>
+
+extern "C" {
+	#include <stdio.h>
+}
 
 #include <containers/vector>
 
+#define assert(x) do {\
+	if(!(x)) {\
+		printf("CHECK failed : %s at %s:%i\n", #x, __FILE__, __LINE__);\
+		abort();\
+	}}while(0 == 1)\
+
 int main(int argc, char const *argv[]) {
-	vector(int) iv;
+	vector(int, heap_allocator(int)) iv;
+	ctor(&iv);
+
+	assert(empty(&iv));
+	assert(size(&iv) == 0);
+	printf("%d\n", size(&iv));
 
 	push_back(&iv, 1);
+	printf("%d\n", size(&iv));
+	assert(size(&iv) == 1);
 	push_back(&iv, 2);
+	printf("%d\n", size(&iv));
+	assert(size(&iv) == 2);
 	push_back(&iv, 3);
+	printf("%d\n", size(&iv));
+	assert(size(&iv) == 3);
 
 	assert(!empty(&iv));
 	assert(size(&iv) == 3);
-	assert(iv[0] == 1);
 	assert(at(&iv, 0) == 1);
-	assert(iv[1] == 2);
+	assert((&iv)[0] == 1);
 	assert(at(&iv, 1) == 2);
-	assert(iv[2] == 3);
+	assert((&iv)[1] == 2);
 	assert(at(&iv, 2) == 3);
+	assert((&iv)[2] == 3);
 
 	clear(&iv);