Moved tests + Added more tests + Added memory testing to actions

tests/ev_str/push_fmt_float.c

@@ -0,0 +1,25 @@
+#define EV_STR_IMPLEMENTATION
+#include "ev_str.h"
+
+#include <assert.h>
+#include <string.h>
+
+int main(void)
+{
+  evstring heap_str = evstring_new("Heap 'Hello, World!'");
+  assert(heap_str != NULL);
+
+  evstring_error_t res = evstring_push(&heap_str, "%.05f", 1.0f);
+  assert(res == EV_STR_ERR_NONE);
+  assert(evstring_getLength(heap_str) == 27);
+  assert(strcmp(heap_str, "Heap 'Hello, World!'1.00000") == 0);
+
+  res = evstring_push(&heap_str, "Something");
+  assert(res == EV_STR_ERR_NONE);
+  assert(evstring_getLength(heap_str) == 36);
+  assert(strcmp(heap_str, "Heap 'Hello, World!'1.00000Something") == 0);
+
+  evstring_free(heap_str);
+
+  return 0;
+}