code: def test_json_as_unicode(test_value, expected, app, app_ctx):
      app.json.ensure_ascii = test_value
      rv = app.json.dumps("\N{SNOWMAN}")
      assert rv == expected
  
imports: import datetime
  import decimal
  import io
  import uuid
  import pytest
  from werkzeug.http import http_date
  import flask
  from flask import json
  from flask.json.provider import DefaultJSONProvider
label_desc: Use image node_id 4 for calling a global function with example usage: test_json_as_unicode(test_value, expected, app, app_ctx) without return types