Add App test file

server/app.spec.js

@@ -0,0 +1,47 @@
+/* eslint-disable max-lines */
+
+const app = require('./app.js').app;
+
+const res = {
+	_status   : 0,
+	status    : jest.fn((n)=>{res._status = n; return res;}),
+	_send     : '',
+	send      : jest.fn((data)=>{res._send = data; return res;}),
+	set       : jest.fn(()=>{}),
+	setHeader : jest.fn(()=>{}),
+	reset     : ()=>{ res._status = 0; res._send = ''; }
+};
+
+describe('Tests for app', ()=>{
+	beforeEach(()=>{
+		return res.reset();
+	});
+
+	it('get CSS from a test brew that has a style', async ()=>{
+		const testBrew = { title: 'test brew', shareId: 'iAmATestBrew', text: '```css\n\nI Have a style!\n````\n\n' };
+
+		const req =  { brew: testBrew };
+		await app.getCSS(req, res);
+
+		expect(res).toHaveProperty('_status', 200);
+		expect(res).toHaveProperty('_send', '\nI Have a style!\n');
+	});
+
+	it('get CSS from a test brew that has no style', async ()=>{
+		const testBrew = { title: 'test brew', shareId: 'iAmATestBrew', text: 'No style data here' };
+
+		const req =  { brew: testBrew };
+		await app.getCSS(req, res);
+
+		expect(res).toHaveProperty('_status', 404);
+		expect(res).toHaveProperty('_send', undefined);
+	});
+
+	it('get CSS from no brew', async ()=>{
+		const req =  { brew: undefined };
+		await app.getCSS(req, res);
+
+		expect(res).toHaveProperty('_status', 404);
+		expect(res).toHaveProperty('_send', undefined);
+	});
+});