Issue/3 test back end

server/tests/__init__.py

+import pytest
+from app import create_app, db
+
+
+@pytest.fixture
+def app():
+    app = create_app("configmodule.TestingConfig")
+
+    with app.app_context():
+        db.drop_all()
+        db.create_all()
+
+    return app
+
+
+@pytest.fixture
+def client(app):
+    return app.test_client()