Implement connection

packages/server/src/integrations/firebase.ts

@@ -4,6 +4,7 @@ import {
   QueryType,
   IntegrationBase,
   DatasourceFeature,
+  ConnectionInfo,
 } from "@budibase/types"
 import { Firestore, WhereFilterOp } from "@google-cloud/firestore"
 
@@ -19,7 +20,7 @@ const SCHEMA: Integration = {
   type: "Non-relational",
   description:
     "Cloud Firestore is a flexible, scalable database for mobile, web, and server development from Firebase and Google Cloud.",
-  features: [],
+  features: [DatasourceFeature.CONNECTION_CHECKING],
   datasource: {
     email: {
       type: DatasourceFieldType.STRING,
@@ -101,6 +102,18 @@ class FirebaseIntegration implements IntegrationBase {
     })
   }
 
+  async testConnection(): Promise<ConnectionInfo> {
+    try {
+      await this.client.listCollections()
+      return { connected: true }
+    } catch (e: any) {
+      return {
+        connected: false,
+        error: e.message as string,
+      }
+    }
+  }
+
   async create(query: { json: object; extra: { [key: string]: string } }) {
     try {
       const documentReference = this.client