try failing test case

Author: bbSnavy

src/vector_test.c

@@ -12,6 +12,9 @@ Test(vector, vector_create) {
   cr_expect(vector->size > 0);
   cr_expect(vector->curr_r == 0);
   cr_expect(vector->curr_w == 0);
+
+  // this should fail
+  cr_expect(1 == 0);
 }
 
 #endif