FDC: update api version, integration tests, and CONTRIBUTING.md (#2972)

* update integration tests and CONTRIBUTING.md

* make test data more readable, tweak contributing instructions

* update api to v1

* check in dataconnect folder

* address comments

* remove .dataconnect folder

* update .gitignore

* make integration tests more robust, explicitly setting and clearing database state

Author: stephenarosaj

.gitignore

@@ -20,3 +20,6 @@ test/resources/appid.txt
 firebase-admin-*.tgz
 
 docgen/markdown/
+
+# Dataconnect integration test artifacts should not be checked in
+test/integration/dataconnect/dataconnect/.dataconnect

CONTRIBUTING.md

@@ -245,6 +245,22 @@ to ensure that exported user records contain the password hashes of the user acc
    3. Click **ADD ANOTHER ROLE** and choose **Firebase Authentication Admin**.
    4. Click **SAVE**.
 
+9. Setup your project for Firebase Data Connect integration tests:
+   1. Set up Data Connect in the Firebase Console:
+      1. Go to the Firebase Console, and select **Data Connect** from the **Build** menu.
+      2. Click on **Get Started**. You can skip any Gemini generation.
+      3. Select **Create a new Cloud SQL instance**.
+      4. Set your **Location** to `us-west2`
+      5. Set your **Cloud SQL instance ID** to `my-instance`
+      6. Set your **Database name** to `my-database`
+      7. Set your **Service ID** to `my-service`
+      8. Click **Submit**. This operation may take up to 10 minutes to complete - you may 
+         continue setting up while this completes.
+   2. Run the following command from the root of the Node Admin SDK repo:
+      ```bash
+      $ firebase deploy --only dataconnect:my-service:my-connector --config ./test/integration/dataconnect/firebase.json --project <PROJECT_ID>
+      ```
+      1. If you're asked if you'd like to execute changes, select `Execute all`.
 
 Finally, to run the integration test suite:
 

src/data-connect/data-connect-api-client-internal.ts

@@ -25,7 +25,7 @@ import * as utils from '../utils/index';
 import * as validator from '../utils/validator';
 import { ConnectorConfig, ExecuteGraphqlResponse, GraphqlOptions } from './data-connect-api';
 
-const API_VERSION = 'v1alpha';
+const API_VERSION = 'v1';
 
 /** The Firebase Data Connect backend base URL format. */
 const FIREBASE_DATA_CONNECT_BASE_URL_FORMAT =