127 lines
3.4 KiB
JavaScript
127 lines
3.4 KiB
JavaScript
/**
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* External dependencies
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*/
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import TestRenderer from 'react-test-renderer';
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/**
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* Internal dependencies
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*/
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import withProduct from '../with-product';
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import * as mockUtils from '../../components/utils';
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import * as mockBaseUtils from '../../base/utils/errors';
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jest.mock( '../../components/utils', () => ( {
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getProduct: jest.fn(),
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} ) );
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jest.mock( '../../base/utils/errors', () => ( {
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formatError: jest.fn(),
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} ) );
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const mockProduct = { name: 'T-Shirt' };
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const attributes = { productId: 1 };
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const TestComponent = withProduct( ( props ) => {
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return (
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<div
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error={ props.error }
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getProduct={ props.getProduct }
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isLoading={ props.isLoading }
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product={ props.product }
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/>
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);
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} );
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const render = () => {
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return TestRenderer.create( <TestComponent attributes={ attributes } /> );
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};
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describe( 'withProduct Component', () => {
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let renderer;
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afterEach( () => {
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mockUtils.getProduct.mockReset();
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} );
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describe( 'lifecycle events', () => {
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beforeEach( () => {
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mockUtils.getProduct.mockImplementation( () => Promise.resolve() );
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renderer = render();
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} );
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it( 'getProduct is called on mount with passed in product id', () => {
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const { getProduct } = mockUtils;
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expect( getProduct ).toHaveBeenCalledWith( attributes.productId );
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expect( getProduct ).toHaveBeenCalledTimes( 1 );
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} );
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it( 'getProduct is called on component update', () => {
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const { getProduct } = mockUtils;
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const newAttributes = { ...attributes, productId: 2 };
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renderer.update( <TestComponent attributes={ newAttributes } /> );
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expect( getProduct ).toHaveBeenNthCalledWith(
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2,
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newAttributes.productId
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);
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expect( getProduct ).toHaveBeenCalledTimes( 2 );
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} );
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it( 'getProduct is hooked to the prop', () => {
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const { getProduct } = mockUtils;
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const props = renderer.root.findByType( 'div' ).props;
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props.getProduct();
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expect( getProduct ).toHaveBeenCalledTimes( 2 );
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} );
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} );
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describe( 'when the API returns product data', () => {
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beforeEach( () => {
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mockUtils.getProduct.mockImplementation( ( productId ) =>
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Promise.resolve( { ...mockProduct, id: productId } )
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);
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renderer = render();
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} );
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it( 'sets the product props', () => {
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const props = renderer.root.findByType( 'div' ).props;
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expect( props.error ).toBeNull();
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expect( typeof props.getProduct ).toBe( 'function' );
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expect( props.isLoading ).toBe( false );
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expect( props.product ).toEqual( {
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...mockProduct,
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id: attributes.productId,
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} );
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} );
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} );
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describe( 'when the API returns an error', () => {
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const error = { message: 'There was an error.' };
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const getProductPromise = Promise.reject( error );
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const formattedError = { message: 'There was an error.', type: 'api' };
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beforeEach( () => {
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mockUtils.getProduct.mockImplementation( () => getProductPromise );
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mockBaseUtils.formatError.mockImplementation(
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() => formattedError
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);
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renderer = render();
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} );
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test( 'sets the error prop', async () => {
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await expect( () => getProductPromise() ).toThrow();
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const { formatError } = mockBaseUtils;
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const props = renderer.root.findByType( 'div' ).props;
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expect( formatError ).toHaveBeenCalledWith( error );
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expect( formatError ).toHaveBeenCalledTimes( 1 );
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expect( props.error ).toEqual( formattedError );
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expect( typeof props.getProduct ).toBe( 'function' );
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expect( props.isLoading ).toBe( false );
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expect( props.product ).toBeNull();
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} );
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} );
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} );
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