Added update check data test coverage

refs https://github.com/TryGhost/Team/issues/728

- This is a continuation of the test coverage for the UpdateCheckService.
- Covers a basic check for what kind of data is sent from the service to external analytics

test/regression/update-check/update_check_spec.js

@@ -16,7 +16,6 @@ let ghostVersion = rewire('../../../core/server/lib/ghost-version');
 const UpdateCheckService = rewire('../../../core/server/update-check-service');
 
 describe('Update Check', function () {
-    describe('fn: check', function () {
     const internal = {context: {internal: true}};
     let settingsStub;
     let i18nStub;
@@ -57,6 +56,7 @@ describe('Update Check', function () {
         configUtils.restore();
     });
 
+    describe('fn: updateCheck', function () {
         it('update check was executed', async function () {
             const updateCheckService = new UpdateCheckService({
                 api: {
@@ -143,6 +143,71 @@ describe('Update Check', function () {
             requestStub.calledOnce.should.equal(true);
 
             requestStub.args[0][0].should.equal('https://updates.ghost.org');
-            requestStub.args[0][1].query.ghost_version.should.equal(ghostVersion.full);        });
+            requestStub.args[0][1].query.ghost_version.should.equal(ghostVersion.full);
+        });
+    });
+
+    describe('Data sent with the POST request', function () {
+        before(function () {
+            configUtils.set('privacy:useUpdateCheck', true);
+        });
+
+        after(function () {
+            configUtils.restore();
+        });
+
+        it('should report the correct data', async function () {
+            const updateCheckService = new UpdateCheckService({
+                api: {
+                    settings: {
+                        read: settingsStub,
+                        edit: settingsStub
+                    },
+                    users: {
+                        browse: sinon.stub().resolves({
+                            users: [{
+                                created_at: '1995-12-24T23:15:00Z'
+                            }, {}]
+                        })
+                    },
+                    posts: {
+                        browse: sinon.stub().resolves({
+                            meta: {
+                                pagination: {
+                                    total: 13
+                                }
+                            }
+                        })
+                    }
+                },
+                config: configUtils.config,
+                i18n: i18nStub,
+                logging: loggingStub,
+                urlUtils: urlUtilsStub,
+                request: requestStub,
+                ghostVersion,
+                ghostMailer: mailService
+            });
+
+            await updateCheckService.check();
+
+            requestStub.calledOnce.should.equal(true);
+
+            requestStub.args[0][0].should.equal('https://updates.ghost.org');
+
+            const data = requestStub.args[0][1].body;
+            data.ghost_version.should.equal(packageInfo.version);
+            data.node_version.should.equal(process.versions.node);
+            data.env.should.equal(process.env.NODE_ENV);
+            data.database_type.should.match(/sqlite3|mysql/);
+            data.blog_id.should.be.a.String();
+            data.blog_id.should.not.be.empty();
+            data.theme.should.be.equal('casperito');
+            data.blog_created_at.should.equal(819846900);
+            data.user_count.should.be.equal(2);
+            data.post_count.should.be.equal(13);
+            data.npm_version.should.be.a.String();
+            data.npm_version.should.not.be.empty();
+        });
     });
 });