add tests for new api route

test/api/v3/integration/user/auth/POST-user_auth_social.test.js

@@ -7,7 +7,7 @@ import {
   getProperty,
 } from '../../../../../helpers/api-integration/v3';
 
-describe.only('POST /user/auth/social', () => {
+describe('POST /user/auth/social', () => {
   let api;
   let user;
   const endpoint = '/user/auth/social';

test/api/v4/user/auth/POST-check_email.test.js

@@ -0,0 +1,56 @@
+import {
+  translate as t,
+  requester,
+  generateUser,
+} from '../../../../helpers/api-integration/v4';
+
+const ENDPOINT = '/user/auth/check-email';
+
+describe('POST /user/auth/check-email', () => {
+  const email = 'SOmE-nEw-emAIl_2@example.net';
+  let api;
+
+  beforeEach(async () => {
+    api = requester();
+  });
+
+  it('returns email if it is not used yet', async () => {
+    const response = await api.post(ENDPOINT, {
+      email,
+    });
+    expect(response.email).to.eql(email);
+  });
+
+  it('rejects if email is not provided', async () => {
+    await expect(api.post(ENDPOINT, {
+    })).to.eventually.be.rejected.and.eql({
+      code: 400,
+      error: 'BadRequest',
+      message: 'Invalid request parameters.',
+    });
+  });
+
+  it('rejects if email is already taken', async () => {
+    const user = await generateUser();
+
+    await expect(api.post(ENDPOINT, {
+      email: user.auth.local.email,
+    })).to.eventually.be.rejected.and.eql({
+      code: 401,
+      error: 'NotAuthorized',
+      message: t('emailTaken'),
+    });
+  });
+
+  it('rejects if casing is different', async () => {
+    const user = await generateUser();
+
+    await expect(api.post(ENDPOINT, {
+      email: user.auth.local.email.toUpperCase(),
+    })).to.eventually.be.rejected.and.eql({
+      code: 401,
+      error: 'NotAuthorized',
+      message: t('emailTaken'),
+    });
+  });
+});