Replace JavaScript Testing Framework from Mocha to Jest (#5412)

1 files changed, 75 insertions, 0 deletions

diff --git a/app/javascript/mastodon/components/__tests__/button-test.js b/app/javascript/mastodon/components/__tests__/button-test.js
new file mode 100644
index 000000000..160cd3cbc
--- /dev/null
+++ b/app/javascript/mastodon/components/__tests__/button-test.js
@@ -0,0 +1,75 @@
+import { shallow } from 'enzyme';
+import React from 'react';
+import renderer from 'react-test-renderer';
+import Button from '../button';
+
+describe('<Button />', () => {
+  it('renders a button element', () => {
+    const component = renderer.create(<Button />);
+    const tree      = component.toJSON();
+
+    expect(tree).toMatchSnapshot();
+  });
+
+  it('renders the given text', () => {
+    const text      = 'foo';
+    const component = renderer.create(<Button text={text} />);
+    const tree      = component.toJSON();
+
+    expect(tree).toMatchSnapshot();
+  });
+
+  it('handles click events using the given handler', () => {
+    const handler = jest.fn();
+    const button  = shallow(<Button onClick={handler} />);
+    button.find('button').simulate('click');
+
+    expect(handler.mock.calls.length).toEqual(1);
+  });
+
+  it('does not handle click events if props.disabled given', () => {
+    const handler = jest.fn();
+    const button  = shallow(<Button onClick={handler} disabled />);
+    button.find('button').simulate('click');
+
+    expect(handler.mock.calls.length).toEqual(0);
+  });
+
+  it('renders a disabled attribute if props.disabled given', () => {
+    const component = renderer.create(<Button disabled />);
+    const tree      = component.toJSON();
+
+    expect(tree).toMatchSnapshot();
+  });
+
+  it('renders the children', () => {
+    const children  = <p>children</p>;
+    const component = renderer.create(<Button>{children}</Button>);
+    const tree      = component.toJSON();
+
+    expect(tree).toMatchSnapshot();
+  });
+
+  it('renders the props.text instead of children', () => {
+    const text      = 'foo';
+    const children  = <p>children</p>;
+    const component = renderer.create(<Button text={text}>{children}</Button>);
+    const tree      = component.toJSON();
+
+    expect(tree).toMatchSnapshot();
+  });
+
+  it('renders class="button--block" if props.block given', () => {
+    const component = renderer.create(<Button block />);
+    const tree      = component.toJSON();
+
+    expect(tree).toMatchSnapshot();
+  });
+
+  it('adds class "button-secondary" if props.secondary given', () => {
+    const component = renderer.create(<Button secondary />);
+    const tree      = component.toJSON();
+
+    expect(tree).toMatchSnapshot();
+  });
+});