code: def test_init_default(self):
      component = AzureOpenAIGenerator(
          api_key="test-api-key",
          azure_endpoint="some-non-existing-endpoint",
      )
      assert component.client.api_key == "test-api-key"
      assert component.azure_deployment == "gpt-35-turbo"
      assert component.streaming_callback is None
      assert not component.generation_kwargs
  
file_path: haystack/test/components/generators/test_azure.py
imports: import os
  import pytest
  from openai import OpenAIError
  from haystack.components.generators import AzureOpenAIGenerator
  from haystack.components.generators.utils import default_streaming_callback
label_desc: Use image node_id 1 for calling the TestAzureOpenAIGenerator obj's underlying member method code with example usage: obj.test_init_default() without return types