text: # coding: utf8
  
  from hypothesis import given, settings
  
  import http_strategies
  from http_base import DaphneTestCase
  
  
  class TestHTTPResponse(DaphneTestCase):
      """
      Tests HTTP response handling.
      """
  
      def normalize_headers(self, headers):
          """
          Lowercases and sorts headers, and strips transfer-encoding ones.
          """
          return sorted([
              (name.lower(), value.strip())
              for name, value in headers
              if name.lower() != "transfer-encoding"
          ])
  
      def test_minimal_response(self):
          """
          Smallest viable example. Mostly verifies that our response building works.
          """
          response = self.run_daphne_response([
              {
                  "type": "http.response.start",
                  "status": 200,
              },
              {
                  "type": "http.response.body",
                  "body": b"hello world",
              },
          ])
          self.assertEqual(response.status, 200)
          self.assertEqual(response.read(), b"hello world")
  
      def test_status_code_required(self):
          """
          Asserts that passing in the 'status' key is required.
  
          Previous versions of Daphne did not enforce this, so this test is here
          to make sure it stays required.
          """
          with self.assertRaises(ValueError):
              self.run_daphne_response([
                  {
                      "type": "http.response.start",
                  },
                  {
                      "type": "http.response.body",
                      "body": b"hello world",
                  },
              ])
  
      def test_custom_status_code(self):
          """
          Tries a non-default status code.
          """
          response = self.run_daphne_response([
              {
                  "type": "http.response.start",
                  "status": 201,
              },
              {
                  "type": "http.response.body",
                  "body": b"i made a thing!",
              },
          ])
          self.assertEqual(response.status, 201)
          self.assertEqual(response.read(), b"i made a thing!")
  
      def test_chunked_response(self):
          """
          Tries sending a response in multiple parts.
          """
          response = self.run_daphne_response([
              {
                  "type": "http.response.start",
                  "status": 201,
              },
              {
                  "type": "http.response.body",
                  "body": b"chunk 1 ",
                  "more_body": True,
              },
              {
                  "type": "http.response.body",
                  "body": b"chunk 2",
              },
          ])
          self.assertEqual(response.status, 201)
          self.assertEqual(response.read(), b"chunk 1 chunk 2")
  
      def test_chunked_response_empty(self):
          """
          Tries sending a response in multiple parts and an empty end.
          """
          response = self.run_daphne_response([
              {
                  "type": "http.response.start",
                  "status": 201,
              },
              {
                  "type": "http.response.body",
                  "body": b"chunk 1 ",
                  "more_body": True,
              },
              {
                  "type": "http.response.body",
                  "body": b"chunk 2",
                  "more_body": True,
              },
              {
                  "type": "http.response.body",
              },
          ])
          self.assertEqual(response.status, 201)
          self.assertEqual(response.read(), b"chunk 1 chunk 2")
  
      @given(body=http_strategies.http_body())
      @settings(max_examples=5, deadline=5000)
      def test_body(self, body):
          """
          Tries body variants.
          """
          response = self.run_daphne_response([
              {
                  "type": "http.response.start",
                  "status": 200,
              },
              {
                  "type": "http.response.body",
                  "body": body,
              },
          ])
          self.assertEqual(response.status, 200)
          self.assertEqual(response.read(), body)
  
      @given(headers=http_strategies.headers())
      @settings(max_examples=5, deadline=5000)
      def test_headers(self, headers):
          # The ASGI spec requires us to lowercase our header names
          response = self.run_daphne_response([
              {
                  "type": "http.response.start",
                  "status": 200,
                  "headers": self.normalize_headers(headers),
              },
              {
                  "type": "http.response.body",
              },
          ])
          # Check headers in a sensible way. Ignore transfer-encoding.
          self.assertEqual(
              self.normalize_headers(response.getheaders()),
              self.normalize_headers(headers),
          )
  