old_contents: import pytest
  
  
  @pytest.mark.asyncio
  async def test_parsing_path_parameters(app):
      request, response = app.test_client.get(
              '/api/v1/user/yun',
          )
      assert response.status == 200
      user = await response.json()
      assert user == "yun"
  
  
  @pytest.mark.asyncio
  async def test_parsing_parameters_optional(app):
      request, response = app.test_client.get(
              '/api/v1/env/',
          )
      assert response.status == 200
      user = await response.json()
      assert user == False
  
  
  @pytest.mark.asyncio
  async def test_parsing_parameters_optional_with_value(app):
      request, response = app.test_client.get(
              '/api/v1/env/?exist=True',
          )
      assert response.status == 200
      user = await response.json()
      assert user == True
  
  
  @pytest.mark.asyncio
  async def test_parsing_query_parameters(app):
      request, response = app.test_client.get(
              '/multiply?left=3&right=4',
          )
      assert response.status == 200
      result = await response.json()
      assert result == 12
  
new_contents: import json
  
  
  def test_parsing_path_parameters(app):
      request, response = app.test_client.get(
              '/api/v1/user/yun',
          )
      assert response.status == 200
      user = response.text
      assert json.loads(user) == "yun"
  
  
  def test_parsing_parameters_optional(app):
      request, response = app.test_client.get(
              '/api/v1/env/',
          )
      assert response.status == 200
      exist = response.text
      assert json.loads(exist) == False
  
  
  def test_parsing_parameters_optional_with_value(app):
      request, response = app.test_client.get(
              '/api/v1/env/?exist=True',
          )
      assert response.status == 200
      exist = response.text
      assert json.loads(exist) == True
  
  
  def test_parsing_query_parameters(app):
      request, response = app.test_client.get(
              '/multiply?left=3&right=4',
          )
      assert response.status == 200
      result = response.text
      assert json.loads(result) == 12
  
subject: fix failed unittests in travis CI