refactor(database): refactor query.test.ts to better preserve original test meaning

Author: jshcrowthe

tests/database/database.test.ts

@@ -3,7 +3,7 @@ import firebase from "../../src/app";
 import { 
   TEST_PROJECT,
   patchFakeAuthFunctions,
-} from "./helpers";
+} from "./helpers/util";
 import "../../src/database";
 
 describe('Database Tests', function() {

tests/database/datasnapshot.test.ts

@@ -1,7 +1,7 @@
 import { expect } from "chai";
 import { nodeFromJSON } from "../../src/database/core/snap/nodeFromJSON";
 import { PRIORITY_INDEX } from "../../src/database/core/snap/indexes/PriorityIndex";
-import { getRandomNode } from "./helpers";
+import { getRandomNode } from "./helpers/util";
 import { DataSnapshot } from "../../src/database/api/DataSnapshot";
 import { Reference } from "../../src/database/api/Reference";
 

tests/database/helpers/EventAccumulator.ts

@@ -0,0 +1,30 @@
+export class EventAccumulator {
+  public eventData = [];
+  public promise;
+  public resolve;
+  public reject;
+  constructor(private expectedEvents: number) {
+    if (!this.expectedEvents) throw new Error('EventAccumulator:You must pass a number of expected events to the constructor');
+    this.promise = new Promise((resolve, reject) => {
+      this.resolve = resolve;
+      this.reject = reject;
+    });
+  }
+  addEvent(eventData?: any) {
+    this.eventData = [
+      ...this.eventData,
+      eventData
+    ];
+    if (this.eventData.length >= this.expectedEvents) {
+      this.resolve(this.eventData);
+    }
+  }
+  reset(expectedEvents?: number) {
+    this.expectedEvents = expectedEvents || this.expectedEvents;
+    this.eventData = [];
+    this.promise = new Promise((resolve, reject) => {
+      this.resolve = resolve;
+      this.reject = reject;
+    });
+  }
+}

tests/database/helpers.ts renamed to tests/database/helpers/util.ts

@@ -1,10 +1,10 @@
-import firebase from "../../src/app";
-import '../../src/database';
-import { Reference } from "../../src/database/api/Reference";
-import { Query } from "../../src/database/api/Query";
+import firebase from "../../../src/app";
+import '../../../src/database';
+import { Reference } from "../../../src/database/api/Reference";
+import { Query } from "../../../src/database/api/Query";
 import { expect } from "chai";
 
-export const TEST_PROJECT = require('../config/project.json');
+export const TEST_PROJECT = require('../../config/project.json');
 
 var qs = {};
 if ('location' in this) {