Multiple Changes

str_test.c

@@ -77,5 +77,30 @@ int main()
     evstring_free(heap_str);
   }
 
+  { // Incorrectly handled mismatches
+    evstring text = evstr("aab");
+    evstring query = evstr("ab");
+    evstring_view match = evstring_findFirst(text, query);
+    assert(match.len == 2);
+    assert(match.offset == 1);
+  }
+
+  { // Underflowing getSpace for stack strings
+    evstring stack_str = evstr("abc");
+    assert(evstring_getSpace(stack_str) == 0);
+  }
+
+  { // Overlapping push
+    evstring s = evstring_newFromStr("abc");
+    assert(s != NULL);
+
+    evstring_error_t err = evstring_pushStr(&s, s);
+    assert(err == EV_STR_ERR_NONE);
+    assert(strcmp(s, "abcabc") == 0);
+
+    evstring_free(s);
+  }
+
+
   return 0;
 }