Add class-based-testing fixtures and decorators

This should ease testing on legacy class-based test suites that
don't want to switch to function-style test

Author: kevin1024

README.md

@@ -66,6 +66,23 @@ def test_that_my_library_works_kinda_ok(httpbin_both):
 
 Through the magic of pytest parametrization, this function will actually execute twice: once with an http url and once with an https url.
 
+## Using pytest-httpbin with unittest-style test cases
+
+I have provided 2 additional fixtures to make testing with class-based tests easier.  I have also provided a couple decorators that provide some syntactic sugar around the pytest method of adding the fixtures to class-based tests.  Just add the `use_class_based_httpbin` and/or `use_class_based_httpbin_secure` class decorators to your class, and then you can access httpbin using self.httpbin and self.httpbin_secure.
+
+```python
+import pytest_httpbin
+
+@pytest_httpbin.use_class_based_httpbin
+@pytest_httpbin.use_class_based_httpbin_secure
+class TestClassBassedTests(unittest.TestCase):
+    def test_http(self):
+        assert requests.get(self.httpbin.url + '/get').response
+
+    def test_http_secure(self):
+        assert requests.get(self.httpbin_secure.url + '/get').response
+```
+
 ## Installation
 
 All you need to do is this:

pytest_httpbin/__init__.py

@@ -1 +1,6 @@
-__version__ = '0.0.2'
+import pytest
+
+__version__ = '0.0.3'
+
+use_class_based_httpbin = pytest.mark.usefixtures("class_based_httpbin")
+use_class_based_httpbin_secure = pytest.mark.usefixtures("class_based_httpbin_secure")

pytest_httpbin/plugin.py

@@ -3,7 +3,6 @@
 from httpbin import app as httpbin_app
 from . import serve
 
-
 @pytest.fixture(scope='session')
 def httpbin(request):
     server = serve.Server(application=httpbin_app)
@@ -26,3 +25,13 @@ def httpbin_both(request, httpbin, httpbin_secure):
         return httpbin
     elif request.param == 'https':
         return httpbin_secure
+
+
+@pytest.fixture(scope='class')
+def class_based_httpbin(request, httpbin):
+    request.cls.httpbin = httpbin
+
+@pytest.fixture(scope='class')
+def class_based_httpbin_secure(request, httpbin_secure):
+    request.cls.httpbin_secure = httpbin_secure
+

tests/test_httpbin.py

@@ -1,4 +1,6 @@
+import unittest
 import requests
+import pytest_httpbin
 
 
 def test_httpbin_gets_injected(httpbin):
@@ -30,3 +32,12 @@ def test_httpbin_join(httpbin):
 
 def test_httpbin_str(httpbin):
     assert httpbin + '/foo' == httpbin.url + '/foo'
+
+@pytest_httpbin.use_class_based_httpbin
+@pytest_httpbin.use_class_based_httpbin_secure
+class TestClassBassedTests(unittest.TestCase):
+    def test_http(self):
+        assert requests.get(self.httpbin.url + '/get').status_code == 200
+
+    def test_http_secure(self):
+        assert requests.get(self.httpbin_secure.url + '/get').status_code == 200