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

tests/ev_str/new_format.c

@@ -0,0 +1,19 @@
+#define EV_STR_IMPLEMENTATION
+#include "ev_str.h"
+
+#include <assert.h>
+#include <string.h>
+
+int main(void)
+{
+  evstring source = evstr("Stack 'Hello, World!'");
+  evstring_view view = evstring_slice(source, 0, -1);
+
+  evstring str_fmt = evstring_new("%d, %d, %.*s", 1, 0, view.len, view.data + view.offset);
+  assert(str_fmt != NULL);
+  assert(strcmp(str_fmt, "1, 0, Stack 'Hello, World!'") == 0);
+
+  evstring_free(str_fmt);
+
+  return 0;
+}