+ withClickOut hoc spec

src/utils/__tests__/noop.spec.js

@@ -1,7 +1,7 @@
 import noop from '../noop';
 
 describe('noop', () => {
-	it('should always return undefined', () => {
+	it('should return nothing', () => {
 		const result = noop();
 		expect(result).toBe(undefined);
 	});

src/utils/__tests__/withClickOut.spec.js

@@ -0,0 +1,34 @@
+import React from 'react';
+import withClickOut from '../withClickOut';
+import { shallow, mount } from 'enzyme';
+
+function TestComponent(props) {
+	return <div ref={props.reference}/>;
+}
+
+describe('withClickOut', () => {
+	const WrappedComponent = withClickOut(TestComponent);
+
+	it('should set correct displayName in wrapped component', () => {
+		expect(WrappedComponent.displayName).toBe('ClickOut(TestComponent)');
+	});
+
+	it('should render <TestComponent>', () => {
+		const tree = shallow(<WrappedComponent />);
+		expect(tree.find('TestComponent').getNode()).toBeTruthy();
+	});
+
+	it('shoud add a click event listener to the document', () => {
+		const addEventListenerSpy = jest.spyOn(document, 'addEventListener');
+		const tree = mount(<WrappedComponent />);
+		expect(addEventListenerSpy).toBeCalledWith('click', tree.instance().handleClick);
+	});
+
+	it('shoud remove the click event listener to the document', () => {
+		const removeEventListenerSpy = jest.spyOn(document, 'removeEventListener');
+		const tree = mount(<WrappedComponent />);
+		const handleClick = tree.instance().handleClick;
+		tree.unmount();
+		expect(removeEventListenerSpy).toBeCalledWith('click', handleClick);
+	});
+});