Fix bug where setting service account key file location wasn't working (

#15)

spec/app.spec.ts

@@ -29,8 +29,10 @@ import { FirebaseFunctionsTest } from '../src/lifecycle';
 
 describe('app', () => {
   let appInstance;
-  let test = new FirebaseFunctionsTest();
+  let test;
+
   before(() => {
+    test = new FirebaseFunctionsTest();
     test.init();
     appInstance = testApp();
   });

spec/index.spec.ts

@@ -21,37 +21,47 @@
 // SOFTWARE.
 
 import 'mocha';
-import './lifecycle.spec';
-import './main.spec';
-import './app.spec';
 import { expect } from 'chai';
 
-/* tslint:disable-next-line:no-var-requires */
-const indexExport = require('../src')();
-
 describe('index', () => {
+  /* tslint:disable-next-line:no-var-requires */
+  const indexExport = require('../src')({ projectId: 'fakeProject' }, 'fakeServiceAccount');
   after(() => {
     // Call cleanup (handles case of cleanup function not existing)
     indexExport.cleanup && indexExport.cleanup();
   });
 
-  it('should export wrap as a function', () => {
-    expect(indexExport.wrap).to.be.an('function');
+  it('should export the expected functions and namespaces', () => {
+    expect(Object.getOwnPropertyNames(indexExport).sort()).to.deep.equal([
+      'analytics',
+      'auth',
+      'cleanup',
+      'crashlytics',
+      'database',
+      'firestore',
+      'makeChange',
+      'mockConfig',
+      'pubsub',
+      'storage',
+      'wrap',
+    ]);
   });
 
-  it('should export makeChange as a function', () => {
-    expect(indexExport.makeChange).to.be.an('function');
+  it('should set env variables based parameters SDK was initialized with', () => {
+    expect(process.env.FIREBASE_CONFIG).to.equal(JSON.stringify({ projectId: 'fakeProject' }));
+    expect(process.env.GOOGLE_APPLICATION_CREDENTIALS).to.equal('fakeServiceAccount');
   });
 
-  it('should export mockConfig as a function', () => {
-    expect(indexExport.mockConfig).to.be.an('function');
-  });
-
-  it('should export cleanup as a function', () => {
-    expect(indexExport.cleanup).to.be.an('function');
+  it('should clean up env variables once cleanup is called', () => {
+    indexExport.cleanup();
+    expect(process.env.FIREBASE_CONFIG).to.equal(undefined);
+    expect(process.env.GOOGLE_APPLICATION_CREDENTIALS).to.equal(undefined);
   });
 });
 
+import './lifecycle.spec';
+import './main.spec';
+import './app.spec';
 // import './providers/analytics.spec';
 // import './providers/auth.spec';
 // import './providers/database.spec';

spec/lifecycle.spec.ts

@@ -28,7 +28,12 @@ import { afterEach } from 'mocha';
 
 describe('lifecycle', () => {
   describe('#init', () => {
-    let test = new FirebaseFunctionsTest();
+    let test;
+
+    before(() => {
+      test = new FirebaseFunctionsTest();
+    });
+
     afterEach(() => {
       test.cleanup();
     });

src/index.ts

@@ -26,14 +26,14 @@ import { merge } from 'lodash';
 import { FirebaseFunctionsTest } from './lifecycle';
 import { features as lazyFeatures, FeaturesList } from './features';
 
-export = (firebaseConfig?: AppOptions) => {
+export = (firebaseConfig?: AppOptions, pathToServiceAccountKey?: string) => {
   const test = new FirebaseFunctionsTest();
-  test.init(firebaseConfig);
+  test.init(firebaseConfig, pathToServiceAccountKey);
   // Ensure other files get loaded after init function, since they load `firebase-functions`
   // which will issue warning if process.env.FIREBASE_CONFIG is not yet set.
   let features = require('./features').features as typeof lazyFeatures;
   features = merge({}, features, {
-    cleanup: () => test.cleanup,
+    cleanup: () => test.cleanup(),
   });
   return features as FeaturesList;
 };