Refactor and improve integration tests suite

Author: rszamszur

template/tests/integration/app/__init__.py

@@ -0,0 +1,41 @@
+from {{package_name}}.config import settings
+
+
+class TestReadyController:
+
+    def test_should_return_ok(self, app_runner):
+        # given
+        settings.USE_REDIS = False
+
+        # when
+        response = app_runner.get("/api/ready")
+
+        # then
+        assert response.status_code == 200
+        assert response.json() == {"status": "ok"}
+
+    def test_should_return_not_found_when_invalid_uri(self, app_runner):
+        # given / when
+        response = app_runner.get("/api/ready/123")
+
+        # then
+        assert response.status_code == 404
+{%- if redis %}
+
+    def test_should_return_bad_gateway_when_redis_unavailable(self, app_runner):
+        # given
+        settings.USE_REDIS = True
+
+        # when
+        response = app_runner.get("/api/ready")
+
+        # then
+        assert response.status_code == 502
+        assert response.json() == {
+            "error": {
+                "code": 502,
+                "message": "Could not connect to Redis",
+                "status": "BAD_GATEWAY",
+            }
+        }
+{% endif %}

template/tests/integration/app/controllers/__init__.py

@@ -0,0 +1,15 @@
+import pytest
+from fastapi.testclient import TestClient
+from {{package_name}}.app import get_application
+from {{package_name}}.config import settings
+
+
+@pytest.fixture
+def app_runner():
+    # Overriding to true in order to initialize redis client on FastAPI event
+    # startup handler. It'll be needed for unit tests.
+    settings.USE_REDIS = True
+    app = get_application()
+
+    with TestClient(app) as client:
+        yield client