Inject dependencies into tornado app

tests/conftest.py

@@ -1,9 +1,19 @@
 import pytest
 
-from atst.app import make_app, make_config
+from atst.app import make_app, make_deps, make_config
+from tests.mocks import MockApiClient
 
 
 @pytest.fixture
 def app():
+    TEST_DEPS = {
+        'authz_client': MockApiClient('authz'),
+        'requests_client': MockApiClient('requests'),
+        'authnid_client': MockApiClient('authnid'),
+    }
+
     config = make_config()
-    return make_app(config)
+    deps = make_deps(config)
+    deps.update(TEST_DEPS)
+
+    return make_app(config, deps)

tests/mocks.py

@@ -0,0 +1,32 @@
+import tornado.gen
+from tornado.httpclient import HTTPRequest, HTTPResponse
+
+
+class MockApiClient(object):
+    def __init__(self, service):
+        self.service = service
+
+    @tornado.gen.coroutine
+    def get(self, path, **kwargs):
+        return self._get_response('GET', path)
+
+    @tornado.gen.coroutine
+    def put(self, path, **kwargs):
+        return self._get_response('PUT', path)
+
+    @tornado.gen.coroutine
+    def patch(self, path, **kwargs):
+        return self._get_response('PATCH', path)
+
+    @tornado.gen.coroutine
+    def post(self, path, **kwargs):
+        return self._get_response('POST', path)
+
+    @tornado.gen.coroutine
+    def delete(self, path, **kwargs):
+        return self._get_response('DELETE', path)
+
+    def _get_response(self, verb, path):
+        response = HTTPResponse(request=HTTPRequest(path, verb), code=200)
+        setattr(response, 'json', {})
+        return response