Added test coverage for /email/ frontend route

refs https://github.com/TryGhost/Team/issues/948
refs 06a6dcb2d1

- The `/email/` route feature landed in main without test coverage. This changeset gives a start to a test suite covering all things `/email/`

test/regression/site/email_routes.test.js

@@ -0,0 +1,77 @@
+// # Frontend Route tests
+// As it stands, these tests depend on the database, and as such are integration tests.
+// Mocking out the models to not touch the DB would turn these into unit tests, and should probably be done in future,
+// But then again testing real code, rather than mock code, might be more useful...
+const should = require('should');
+const sinon = require('sinon');
+const supertest = require('supertest');
+const cheerio = require('cheerio');
+
+const testUtils = require('../../utils');
+const config = require('../../../core/shared/config');
+const settingsCache = require('../../../core/shared/settings-cache');
+
+describe('Frontend Routing: Email Routes', function () {
+    let request;
+    let emailPosts;
+
+    afterEach(function () {
+        sinon.restore();
+    });
+
+    before(async function () {
+        const originalSettingsCacheGetFn = settingsCache.get;
+
+        // NOTE: this wacky stubbing can be removed once emailOnlyPosts enters GA stage
+        sinon.stub(settingsCache, 'get').callsFake(function (key, options) {
+            if (key === 'labs') {
+                return {
+                    emailOnlyPosts: true
+                };
+            }
+
+            return originalSettingsCacheGetFn(key, options);
+        });
+
+        await testUtils.startGhost();
+
+        request = supertest.agent(config.get('url'));
+
+        emailPosts = await testUtils.fixtures.insertPosts([{
+            title: 'I am visible through email route!',
+            status: 'draft',
+            posts_meta: {
+                email_only: true
+            }
+        }]);
+    });
+
+    after(function () {
+        sinon.restore();
+    });
+
+    it('should display email_only post', async function () {
+        const res = await request.get(`/email/${emailPosts[0].get('uuid')}/`)
+            .expect('Content-Type', /html/)
+            .expect(200);
+
+        const $ = cheerio.load(res.text);
+
+        $('title').text().should.equal('I am visible through email route!');
+
+        should.not.exist(res.headers['x-cache-invalidate']);
+        should.not.exist(res.headers['X-CSRF-Token']);
+        should.not.exist(res.headers['set-cookie']);
+        should.exist(res.headers.date);
+    });
+
+    it('404s when accessed by slug', function () {
+        return request.get(`/${emailPosts[0].get('slug')}/`)
+            .expect(404);
+    });
+
+    it('404s unknown uuids', function () {
+        return request.get('/email/aac6b4f6-e1f3-406c-9247-c94a0496d39f/')
+            .expect(404);
+    });
+});