test(firebase): use emulator to run tests

.gitignore

@@ -12,4 +12,5 @@ node_modules/
 # Files
 .DS_Store
 
-.firebase
+.firebase
+*.log

firebase.json

@@ -1,10 +1,14 @@
 {
-  "firestore": {
-    "rules": "firestore.rules",
-    "indexes": "firestore.indexes.json"
-  },
   "hosting": {
     "public": "docs",
     "predeploy": "npm run docs && cp -a ./examples/ ./docs/"
+  },
+  "emulators": {
+    "firestore": {
+      "port": 8080
+    },
+    "ui": {
+      "enabled": true
+    }
   }
 }

firestore.indexes.json

@@ -1,19 +1,4 @@
 {
-  "indexes": [
-    {
-      "collectionGroup": "tests",
-      "queryScope": "COLLECTION",
-      "fields": [
-        {
-          "fieldPath": "count",
-          "order": "ASCENDING"
-        },
-        {
-          "fieldPath": "g.geohash",
-          "order": "ASCENDING"
-        }
-      ]
-    }
-  ],
+  "indexes": [],
   "fieldOverrides": []
 }

firestore.rules

@@ -14,11 +14,5 @@ service cloud.firestore {
                             && request.resource.data.coordinates is latlng
                             && request.resource.data.count is number;
     }
-    match /geofirestore-tests/{key} {
-      allow read, write: if true;
-    }
-    match /geofirestore-core-tests/{key} {
-      allow read, write: if true;
-    }
   }
 }

package.json

@@ -7,7 +7,9 @@
     "coverage": "nyc report --reporter=text-lcov | coveralls",
     "docs": "typedoc --out docs/ src/",
     "lint": "gts lint",
-    "test": "nyc --reporter=html --reporter=text mocha --package package.json --exit",
+    "start": "firebase emulators:start",
+    "test": "firebase emulators:exec 'npm run test:nyc'",
+    "test:nyc": "nyc --reporter=html --reporter=text mocha --package package.json --exit",
     "release:major": "changelog -M && git add . && git commit -m 'chore(release): major version release' && npm version major",
     "release:minor": "changelog -m && git add . && git commit -m 'chore(release): minor version release' && npm version minor",
     "release:patch": "changelog -p && git add . && git commit -m 'chore(release): patch version release' && npm version patch",
@@ -59,6 +61,7 @@
     "@types/chai": "^4.2.18",
     "@types/mocha": "^8.2.2",
     "@types/node": "^14.11.2",
+    "axios": "^0.21.1",
     "chai": "^4.3.4",
     "coveralls": "^3.1.0",
     "firebase-tools": "^9.12.1",

test/common.ts

@@ -3,6 +3,7 @@ import firebase from 'firebase/app';
 import 'firebase/firestore';
 import {encodeDocumentAdd} from 'geofirestore-core';
 import {distance} from 'geokit';
+import axios from 'axios';
 
 import {GeoCollectionReference, GeoFirestore, GeoFirestoreTypes} from '../src';
 
@@ -129,6 +130,7 @@ export const invalidObjects: any[] = [
   NaN,
 ];
 export const testCollectionName = 'geofirestore-tests';
+const projectId = 'geofirestore';
 export const validGeohashes: string[] = ['4', 'd62dtu', '000000000000'];
 export const validLocations: firebase.firestore.GeoPoint[] = [
   new firebase.firestore.GeoPoint(0, 0),
@@ -160,16 +162,19 @@ export let geocollection: GeoCollectionReference;
 firebase.initializeApp({
   apiKey: 'AIzaSyDFnedGL4qr_jenIpWYpbvot8s7Vuay_88',
   databaseURL: 'https://geofirestore.firebaseio.com',
-  projectId: 'geofirestore',
+  projectId,
 });
 
 /**********************/
 /*  HELPER FUNCTIONS  */
 /**********************/
 /* Helper functions which runs before each Jasmine test has started */
 export function beforeEachHelper(done: any): void {
-  // Create a new Firebase database ref at a random node
+  if (firestore) {
+    firestore.terminate();
+  }
   firestore = firebase.firestore();
+  firestore.useEmulator('localhost', 8080);
   collection = firestore.collection(testCollectionName);
   geofirestore = new GeoFirestore(firestore);
   geocollection = new GeoCollectionReference(collection);
@@ -178,12 +183,11 @@ export function beforeEachHelper(done: any): void {
 
 /* Helper functions which runs after each Jasmine test has completed */
 export function afterEachHelper(done: any): void {
-  deleteCollection()
-    .then(() => {
-      // Wait for 50 milliseconds after each test to give enough time for old query events to expire
-      return wait(50);
-    })
-    .then(done);
+  axios
+    .delete(
+      `http://${process.env.FIREBASE_FIRESTORE_EMULATOR_ADDRESS}/emulator/v1/projects/${projectId}/databases/(default)/documents`
+    )
+    .then(() => done());
 }
 
 /* Helper function designed to create docs within a certain range of coordinates */
@@ -225,43 +229,6 @@ export function wait(milliseconds = 100): Promise<void> {
   });
 }
 
-/* Used to purge Firestore collection. Used by afterEachHelperFirestore. */
-function deleteCollection(): Promise<any> {
-  return new Promise((resolve, reject) =>
-    deleteQueryBatch(collection.limit(500), resolve, reject)
-  );
-}
-
-/* Actually purges Firestore collection recursively through batch function. */
-function deleteQueryBatch(
-  query: firebase.firestore.Query,
-  resolve: Function,
-  reject: Function
-): void {
-  query
-    .get()
-    .then(snapshot => {
-      // When there are no documents left, we are done
-      if (snapshot.size === 0) {
-        return 0;
-      }
-
-      // Delete documents in a batch
-      const batch = firestore.batch();
-      snapshot.docs.forEach(doc => batch.delete(doc.ref));
-
-      return batch.commit().then(() => snapshot.size);
-    })
-    .then(numDeleted => {
-      if (numDeleted === 0) {
-        resolve();
-        return;
-      }
-      process.nextTick(() => deleteQueryBatch(query, resolve, reject));
-    })
-    .catch(err => reject(err));
-}
-
 export function stubDatabase(
   docs: Array<{[key: string]: any}> = validDocumentData()
 ): Promise<any> {