Travis - test on Trusty (#129)

As per [their blog post](https://blog.travis-ci.com/2017-07-11-trusty-as-default-linux-is-coming) they're making it the new default, best to be ahead of the curve.

.travis.yml

@@ -1,4 +1,5 @@
 sudo: false
+dist: trusty
 
 language: python
 

daphne/tests/__init__.py

@@ -0,0 +1,7 @@
+from hypothesis import HealthCheck, settings
+
+settings.register_profile(
+    'daphne',
+    settings(suppress_health_check=[HealthCheck.too_slow]),
+)
+settings.load_profile('daphne')

daphne/tests/test_http_request.py

@@ -8,7 +8,7 @@ import unittest
 from six.moves.urllib import parse
 
 from asgiref.inmemory import ChannelLayer
-from hypothesis import given, assume, settings, HealthCheck
+from hypothesis import given, assume
 from twisted.test import proto_helpers
 
 from daphne.http_protocol import HTTPFactory
@@ -99,7 +99,6 @@ class TestHTTPRequestSpec(testcases.ASGIHTTPTestCase):
         request_body=http_strategies.http_body(),
     )
     # This test is slow enough that on Travis, hypothesis sometimes complains.
-    @settings(suppress_health_check=[HealthCheck.too_slow])
     def test_kitchen_sink(
             self, request_method, request_path, request_params, request_headers, request_body):
         """

daphne/tests/test_http_response.py

@@ -7,7 +7,7 @@ from __future__ import unicode_literals
 from unittest import TestCase
 
 from asgiref.inmemory import ChannelLayer
-from hypothesis import given, settings
+from hypothesis import given
 from twisted.test import proto_helpers
 
 from daphne.http_protocol import HTTPFactory
@@ -72,7 +72,6 @@ class TestHTTPResponseSpec(testcases.ASGIHTTPTestCase):
         headers=http_strategies.headers(),
         body=http_strategies.http_body(),
     )
-    @settings(perform_health_check=False)
     def test_kitchen_sink(self, headers, body):
         """
         This tests tries to let Hypothesis find combinations of variables that result