add tests for pytest plugin

set minimum version of pytest in c-requirements

requirements-ci.txt

@@ -8,7 +8,7 @@ cython
 chardet
 tox
 sphinxcontrib-newsfeed
-pytest
+pytest>=2.9.2
 pytest-cov
 gunicorn
 pygments>=2.1

tests/test_pytest_plugins.py

@@ -0,0 +1,70 @@
+pytest_plugins = 'pytester'
+
+
+def test_myplugin(testdir):
+    testdir.makepyfile("""\
+import asyncio
+import pytest
+from aiohttp import web
+
+pytest_plugins = 'aiohttp.pytest_plugins'
+
+
+@asyncio.coroutine
+def hello(request):
+    return web.Response(body=b'Hello, world')
+
+
+def create_app(loop):
+    app = web.Application(loop=loop)
+    app.router.add_route('GET', '/', hello)
+    return app
+
+
+@asyncio.coroutine
+def test_hello(test_client):
+    client = yield from test_client(create_app)
+    resp = yield from client.get('/')
+    assert resp.status == 200
+    text = yield from resp.text()
+    assert 'Hello, world' in text
+
+
+@asyncio.coroutine
+def test_hello_with_loop(test_client, loop):
+    client = yield from test_client(create_app)
+    resp = yield from client.get('/')
+    assert resp.status == 200
+    text = yield from resp.text()
+    assert 'Hello, world' in text
+
+
+@asyncio.coroutine
+def test_hello_fails(test_client):
+    client = yield from test_client(create_app)
+    resp = yield from client.get('/')
+    assert resp.status == 200
+    text = yield from resp.text()
+    assert 'Hello, wield' in text
+
+
+@asyncio.coroutine
+def test_noop():
+    pass
+
+
+@pytest.fixture
+def client_alias(loop, test_client):
+    cli = loop.run_until_complete(test_client(create_app))
+    return cli
+
+
+@asyncio.coroutine
+def test_hello_with_alias(client_alias):
+    resp = yield from client_alias.get('/')
+    assert resp.status == 200
+    text = yield from resp.text()
+    assert 'Hello, world' in text
+""")
+    result = testdir.runpytest()
+    result.assert_outcomes(passed=4, failed=1)