[tests] Added tests for contacts sagas.

__tests__/src/sagas/contacts/index.js

@@ -0,0 +1,16 @@
+// @flow
+
+import { takeEvery, all } from 'redux-saga/effects';
+
+import rootSaga from '../../../../src/sagas/contacts';
+import { ADD_CONTACT, START_CONTACTS_FETCH } from '../../../../src/actions/contacts';
+import { SERVICES_CREATED } from '../../../../src/actions/serviceContainer';
+import { addNewContact, fetchContacts } from '../../../../src/sagas/contacts/sagas';
+
+test('rootSaga', () => {
+  const iterator = rootSaga();
+  expect(iterator.next().value).toEqual(all([
+    takeEvery([SERVICES_CREATED, START_CONTACTS_FETCH], fetchContacts),
+    takeEvery(ADD_CONTACT, addNewContact),
+  ]));
+});

__tests__/src/sagas/contacts/sagas.js

@@ -0,0 +1,74 @@
+// @flow
+
+import { call, put } from 'redux-saga/effects';
+import { cloneableGenerator } from 'redux-saga/utils';
+
+import { addContact, contactsFetchFailed, contactsUpdated } from '../../../../src/actions/contacts';
+import { addNewContact, fetchContacts } from '../../../../src/sagas/contacts/sagas';
+import { getProfile } from '../../../../src/sagas/chat/sagas';
+import ContactsService from '../../../../src/services/contacts';
+import type { ProfileType } from '../../../../src/types/Chat';
+
+const mockIdentityKey = 'MOCK_IDENTITY_KEY';
+const mockProfile: ProfileType = {
+  name: 'name',
+  location: 'location',
+  identityKey: mockIdentityKey,
+  ethereumAddress: 'ethereumAddress',
+  ethereumPublicKey: 'ethereumPublicKey',
+  chatIdKey: 'chatIdKey',
+  timestamp: new Date(),
+  version: 1,
+  image: 'image',
+  ethereumKeySignature: 'ethereumKeySignature',
+  identityKeySignature: 'identityKeySignature',
+};
+
+test('addNewContact', () => {
+  const mockCallback = jest.fn();
+  const mockAction = addContact(mockIdentityKey, mockCallback);
+
+  const gen = cloneableGenerator(addNewContact)(mockAction);
+  expect(gen.next().value).toEqual(call(getProfile, mockIdentityKey));
+
+  const exceptionGen = gen.clone();
+  const mockError = new Error('MOCK: Failed to get profile');
+  expect(exceptionGen.throw(mockError).value).toEqual(call(mockCallback, mockError));
+  expect(exceptionGen.next().done).toBeTruthy();
+
+  const noProfileGen = gen.clone();
+  expect(noProfileGen.next(undefined).value).toEqual(call(mockCallback, new Error('Trying to add contact, but profile is not on database')));
+  expect(noProfileGen.next().done).toBeTruthy();
+
+  expect(gen.next(mockProfile).value).toEqual(call(ContactsService.addContact, mockIdentityKey));
+  expect(gen.next().value).toEqual(call(mockCallback, null));
+  expect(gen.next().value).toEqual(put(fetchContacts));
+});
+
+test('fetchContacts', () => {
+  const mockIdentityKey2 = 'MOCK_IDENTITY_KEY_2';
+
+  const mockIdentityKeys = [
+    { identity_key: mockIdentityKey },
+    { identity_key: mockIdentityKey2 },
+  ];
+
+  const gen = cloneableGenerator(fetchContacts)();
+  expect(gen.next().value).toEqual(call(ContactsService.getContacts));
+
+  const exceptionGen = gen.clone();
+  const mockError = new Error('MOCK: Failed to get contacts');
+  expect(exceptionGen.throw(mockError).value).toEqual(put(contactsFetchFailed(mockError)));
+  expect(exceptionGen.next().done).toBeTruthy();
+
+  const emptyListGen = gen.clone();
+  expect(emptyListGen.next([]).value).toEqual(put(contactsUpdated([])));
+  expect(emptyListGen.next().done).toBeTruthy();
+
+  expect(gen.next(mockIdentityKeys).value).toEqual(call(getProfile, mockIdentityKey));
+  // We return profile for first request
+  expect(gen.next(mockProfile).value).toEqual(call(getProfile, mockIdentityKey2));
+  // We return null for second request
+  expect(gen.next(null).value).toEqual(put(contactsUpdated([{ profile: mockProfile }])));
+  expect(gen.next().done).toBeTruthy();
+});

src/sagas/contacts/index.js

@@ -9,12 +9,12 @@ import {
 } from '../../actions/contacts';
 
 /**
- * @desc Root Contacts saga.
+ * @desc Root contacts saga.
  * @return {void}
  */
 export default function* rootSaga(): Generator<*, *, *> {
   yield all([
-    yield takeEvery([SERVICES_CREATED, START_CONTACTS_FETCH], fetchContacts),
-    yield takeEvery(ADD_CONTACT, addNewContact),
+    takeEvery([SERVICES_CREATED, START_CONTACTS_FETCH], fetchContacts),
+    takeEvery(ADD_CONTACT, addNewContact),
   ]);
 }