Added email preview test

core/test/regression/api/canary/admin/email_preview_spec.js

@@ -0,0 +1,72 @@
+const should = require('should');
+const supertest = require('supertest');
+const ObjectId = require('bson-objectid');
+const testUtils = require('../../../../utils');
+const config = require('../../../../../server/config');
+const localUtils = require('./utils');
+const ghost = testUtils.startGhost;
+let request;
+
+describe('Email Preview API', function () {
+    let ghostServer;
+    let ownerCookie;
+
+    before(function () {
+        return ghost()
+            .then(function (_ghostServer) {
+                ghostServer = _ghostServer;
+                request = supertest.agent(config.get('url'));
+            })
+            .then(function () {
+                return localUtils.doAuth(request, 'users:extra', 'posts');
+            })
+            .then(function (cookie) {
+                ownerCookie = cookie;
+            });
+    });
+
+    describe('Read', function () {
+        it('can\'t retrieve non existent post', function (done) {
+            request.get(localUtils.API.getApiQuery(`posts/${ObjectId.generate()}/`))
+                .set('Origin', config.get('url'))
+                .set('Accept', 'application/json')
+                .expect('Content-Type', /json/)
+                .expect('Cache-Control', testUtils.cacheRules.private)
+                .expect(404)
+                .end(function (err, res) {
+                    if (err) {
+                        return done(err);
+                    }
+
+                    should.not.exist(res.headers['x-cache-invalidate']);
+                    var jsonResponse = res.body;
+                    should.exist(jsonResponse);
+                    should.exist(jsonResponse.errors);
+                    testUtils.API.checkResponseValue(jsonResponse.errors[0], [
+                        'message',
+                        'context',
+                        'type',
+                        'details',
+                        'property',
+                        'help',
+                        'code',
+                        'id'
+                    ]);
+                    done();
+                });
+        });
+
+        it('can read post email preview with fields', function () {
+            return request
+                .get(localUtils.API.getApiQuery(`email_preview/posts/${testUtils.DataGenerator.Content.posts[0].id}/?fields=html,plaintext,subject`))
+                .set('Origin', config.get('url'))
+                .set('Accept', 'application/json')
+                .expect('Content-Type', /json/)
+                .expect('Cache-Control', testUtils.cacheRules.private)
+                .expect(200)
+                .then((res) => {
+                    localUtils.API.checkResponse(res.body.email_previews[0], 'email_preview', null, null, ['id', 'html', 'plaintext', 'subject']);
+                });
+        });
+    });
+});