Added e2e test coverage for post.added event

refs https://github.com/TryGhost/Toolbox/issues/320

- Wanted to verify if multiple webhook snapshot tests would play nicely together. They did!
- Also having few tests of the same type allows to detect patterns that could be extracted and reused later :)

test/e2e-webhooks/__snapshots__/posts.test.js.snap

@@ -1,5 +1,84 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
+exports[`post.* events post.added even is triggered 1: [body] 1`] = `
+Object {
+  "post": Object {
+    "current": Object {
+      "canonical_url": null,
+      "codeinjection_foot": null,
+      "codeinjection_head": null,
+      "comment_id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
+      "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "custom_excerpt": null,
+      "custom_template": null,
+      "email": Object {},
+      "email_only": false,
+      "email_segment": "all",
+      "email_subject": null,
+      "excerpt": null,
+      "feature_image": null,
+      "feature_image_alt": null,
+      "feature_image_caption": null,
+      "featured": false,
+      "frontmatter": null,
+      "html": null,
+      "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
+      "meta_description": null,
+      "meta_title": null,
+      "mobiledoc": "{\\"version\\":\\"0.3.1\\",\\"ghostVersion\\":\\"4.0\\",\\"markups\\":[],\\"atoms\\":[],\\"cards\\":[],\\"sections\\":[[1,\\"p\\",[[0,[],0,\\"\\"]]]]}",
+      "og_description": null,
+      "og_image": null,
+      "og_title": null,
+      "plaintext": null,
+      "primary_tag": null,
+      "published_at": null,
+      "slug": "testing-post-added-webhook",
+      "status": "draft",
+      "tags": Array [],
+      "tiers": Array [
+        Object {
+          "active": true,
+          "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+          "description": null,
+          "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
+          "monthly_price_id": null,
+          "name": "Default Product",
+          "slug": "default-product",
+          "type": "paid",
+          "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+          "visibility": "public",
+          "welcome_page_url": null,
+          "yearly_price_id": null,
+        },
+        Object {
+          "active": true,
+          "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+          "description": null,
+          "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
+          "monthly_price_id": null,
+          "name": "Free",
+          "slug": "free",
+          "type": "free",
+          "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+          "visibility": "public",
+          "welcome_page_url": null,
+          "yearly_price_id": null,
+        },
+      ],
+      "title": "testing post.added webhook",
+      "twitter_description": null,
+      "twitter_image": null,
+      "twitter_title": null,
+      "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "url": StringMatching /http:\\\\/\\\\/127\\.0\\.0\\.1:2369\\\\/\\\\w\\+\\\\//,
+      "uuid": StringMatching /\\[a-f0-9\\]\\{8\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{12\\}/,
+      "visibility": "public",
+    },
+    "previous": Object {},
+  },
+}
+`;
+
 exports[`post.* events post.published even is triggered 1: [body] 1`] = `
 Object {
   "post": Object {

test/e2e-webhooks/posts.test.js

@@ -7,12 +7,12 @@ const tierSnapshot = {
     updated_at: anyISODateTime
 };
 
-const buildPostSnapshotWithTiers = ({tiersCount}) => {
+const buildPostSnapshotWithTiers = ({published, tiersCount}) => {
     return {
         id: anyObjectId,
         uuid: anyUuid,
         comment_id: anyObjectId,
-        published_at: anyISODateTime,
+        published_at: published ? anyISODateTime : null,
         created_at: anyISODateTime,
         updated_at: anyISODateTime,
         // @TODO: hack here! it's due to https://github.com/TryGhost/Toolbox/issues/341
@@ -81,9 +81,43 @@ describe('post.* events', function () {
             // .matchHeaderSnapshot();
             .matchBodySnapshot({
                 post: {
-                    current: buildPostSnapshotWithTiers({tiersCount: 2}),
+                    current: buildPostSnapshotWithTiers({
+                        published: true,
+                        tiersCount: 2
+                    }),
                     previous: buildPreviousPostSnapshotWithTiers({tiersCount: 2})
                 }
             });
     });
+
+    it('post.added even is triggered', async function () {
+        const webhookURL = 'https://test-webhook-receiver.com/post-added/';
+        await webhookMockReceiver.mock(webhookURL);
+        await fixtureManager.insertWebhook({
+            event: 'post.added',
+            url: webhookURL
+        });
+
+        await adminAPIAgent
+            .post('posts/')
+            .body({
+                posts: [{
+                    title: 'testing post.added webhook',
+                    status: 'draft'
+                }]
+            })
+            .expectStatus(201);
+
+        await webhookMockReceiver
+            // TODO: implement header matching feature next!
+            // .matchHeaderSnapshot();
+            .matchBodySnapshot({
+                post: {
+                    current: buildPostSnapshotWithTiers({
+                        published: false,
+                        tiersCount: 2
+                    })
+                }
+            });
+    });
 });