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fetch.test.js
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fetch.test.js
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/* global fetchMock, process */
const fetchJson = require( '../../../resources/src/mediawiki.skinning.typeaheadSearch/fetch.js' );
const jestFetchMock = require( 'jest-fetch-mock' );
const mockedRequests = !process.env.TEST_LIVE_REQUESTS;
const url = '//en.wikipedia.org/w/rest.php/v1/search/title?q=jfgkdajgioj&limit=10';
describe( 'abort() using AbortController', () => {
test( 'Aborting an unfinished request throws an AbortError', async () => {
expect.assertions( 1 );
const { abort, fetch } = fetchJson( url );
abort();
return fetch.catch( ( e ) => {
expect( e.name ).toStrictEqual( 'AbortError' );
} );
} );
} );
describe( 'fetch() using window.fetch', () => {
beforeAll( () => {
jestFetchMock.enableFetchMocks();
} );
afterAll( () => {
jestFetchMock.disableFetchMocks();
} );
beforeEach( () => {
fetchMock.resetMocks();
if ( !mockedRequests ) {
fetchMock.disableMocks();
}
fetchMock.mockIf( /^\/\/en.wikipedia.org\//, async ( req ) => {
if ( req.url === url ) {
return {
body: JSON.stringify( { pages: [] } ),
headers: {
'Content-Type': 'application/json'
}
};
} else {
return {
status: 404,
body: 'Page not found'
};
}
} );
} );
test( '200 without init param passed', async () => {
const { fetch } = fetchJson( url );
const json = await fetch;
const controller = new AbortController();
expect( json ).toStrictEqual( { pages: [] } );
if ( mockedRequests ) {
expect( fetchMock ).toHaveBeenCalledTimes( 1 );
expect( fetchMock ).toHaveBeenCalledWith( url, { signal: controller.signal } );
}
} );
test( '200 with init param passed', async () => {
const { fetch } = fetchJson( url, { mode: 'cors' } );
const json = await fetch;
expect( json ).toStrictEqual( { pages: [] } );
if ( mockedRequests ) {
expect( fetchMock ).toHaveBeenCalledTimes( 1 );
expect( fetchMock ).toHaveBeenCalledWith(
url,
expect.objectContaining( { mode: 'cors' } )
);
}
} );
test( '404 response', async () => {
expect.assertions( 1 );
const { fetch } = fetchJson( '//en.wikipedia.org/doesNotExist' );
await expect( fetch )
.rejects.toStrictEqual( 'Network request failed with HTTP code 404' );
if ( mockedRequests ) {
const controller = new AbortController();
expect.assertions( 3 );
expect( fetchMock ).toHaveBeenCalledTimes( 1 );
expect( fetchMock ).toHaveBeenCalledWith(
'//en.wikipedia.org/doesNotExist', { signal: controller.signal }
);
}
} );
} );

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