code: def test_default_placeholder_equals():
      placeholder_1 = Default("a")
      placeholder_2 = Default("a")
      assert placeholder_1 == placeholder_2
      assert placeholder_1.value == placeholder_2.value
  
file_path: fastapi/tests/test_datastructures.py
imports: import io
  from pathlib import Path
  from typing import List
  import pytest
  from fastapi import FastAPI, UploadFile
  from fastapi.datastructures import Default
  from fastapi.testclient import TestClient
label_desc: Use image node_id 3 for calling a global function with example usage: test_default_placeholder_equals() without return types