tests was added

Author: mbozkaya

src/App.test.js

@@ -1,9 +1,15 @@
+import { shallow } from 'enzyme';
 import React from 'react';
-import { render } from '@testing-library/react';
 import App from './App';
-
-test('renders learn react link', () => {
-  const { getByText } = render(<App />);
-  const linkElement = getByText(/learn react/i);
-  expect(linkElement).toBeInTheDocument();
+import Adapter from 'enzyme-adapter-react-16';
+import { configure } from 'enzyme';
+configure({ adapter: new Adapter() });
+it("renders without crashing", () => {
+  shallow(<App />);
 });
+
+it("renders Account header", () => {
+  const wrapper = shallow(<App />);
+  const welcome = <p></p>;
+  expect(wrapper.contains(welcome)).toEqual(false);
+});

src/components/MockApi.js

@@ -1,4 +1,4 @@
-class MockApi {
+export default class MockApi {
     constructor(defaultUsers = [], latency = 500) {
         this.defaultUsers = defaultUsers;
         this.latency = latency;
@@ -69,4 +69,3 @@ class MockApi {
     }
 }
 
-export default MockApi;

src/components/MockApi.test.js

@@ -0,0 +1,33 @@
+import Adapter from 'enzyme-adapter-react-16';
+import { configure, shallow } from 'enzyme';
+import { MockApi } from './MockApi';
+configure({ adapter: new Adapter() });
+
+jest.mock('./MockApi', () => {
+    // Works and lets you check for constructor calls:
+    return {
+        MockApi: jest.fn().mockImplementation(() => {
+            return {
+                getAllUSers: () => [],
+                setUsers: () => undefined,
+            };
+        }),
+    };
+});
+
+beforeEach(() => {
+    MockApi.mockClear();
+});
+
+
+
+it('requires be an array  to get all users method result', () => {
+    const mockApi = new MockApi();
+    expect(mockApi.getAllUSers()).toEqual([]);
+});
+
+it('requires set users as an array', () => {
+    const mockApi = new MockApi();
+    expect(mockApi.setUsers()).toEqual(undefined);
+});
+

src/components/Page.test.js

@@ -0,0 +1,22 @@
+import { mount, shallow } from 'enzyme';
+import React from 'react';
+import Adapter from 'enzyme-adapter-react-16';
+import { configure } from 'enzyme';
+import Page from './Page';
+configure({ adapter: new Adapter() });
+
+it('renders without crashing', () => {
+    shallow(<Page><div></div></Page>)
+});
+
+it('requires render with children', () => {
+    const children = <p></p>;
+    const wrapper = shallow(<Page>{children}</Page>);
+    expect(wrapper.contains(children)).toEqual(true);
+});
+
+it('requires contain children props', () => {
+    const children = <p>this is children</p>;
+    const wrapper = mount(<Page>{children}</Page>);
+    expect(wrapper.props().children).toEqual(children);
+});