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fetch.js
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fetch.js
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import { test, summary } from './helpers.js';
console.log('Fetch Tests\n');
async function testRejects(name, fn) {
try {
await fn();
test(`${name} rejects`, false, true);
} catch (_err) {
test(`${name} rejects`, true, true);
}
}
test('fetch typeof', typeof fetch, 'function');
const textResponse = await fetch('data:,hello%20world');
test('fetch data url returns Response', textResponse instanceof Response, true);
test('fetch data url status', textResponse.status, 200);
test('fetch data url ok', textResponse.ok, true);
test('fetch data url url', textResponse.url, 'data:,hello%20world');
test('fetch data url text', await textResponse.text(), 'hello world');
const jsonResponse = await fetch('data:application/json,%7B%22ok%22%3Atrue%7D');
test('fetch data url json content-type', jsonResponse.headers.get('content-type'), 'application/json');
test('fetch data url json body', (await jsonResponse.json()).ok, true);
test(
'fetch response headers immutable',
(() => {
try {
jsonResponse.headers.append('x-test', '1');
return false;
} catch (_err) {
return true;
}
})(),
true
);
const requestInput = new Request('data:text/plain,request-body');
const requestResponse = await fetch(requestInput);
test('fetch accepts Request input', await requestResponse.text(), 'request-body');
const encoder = new TextEncoder();
const streamBody = new ReadableStream({
start(controller) {
controller.enqueue(encoder.encode('{"runtime":"ant",'));
controller.enqueue(encoder.encode('"stream":true}'));
controller.close();
}
});
const streamedUploadResponse = await fetch('https://httpbingo.org/post', {
method: 'POST',
body: streamBody,
duplex: 'half',
headers: {
'Content-Type': 'application/json'
}
});
const streamedUploadJson = await streamedUploadResponse.json();
test('fetch streamed body status', streamedUploadResponse.status, 200);
test('fetch streamed body json runtime', streamedUploadJson.json.runtime, 'ant');
test('fetch streamed body json stream', streamedUploadJson.json.stream, true);
const abortedController = new AbortController();
abortedController.abort(new Error('aborted'));
await testRejects('fetch with aborted signal', () => fetch('data:,ignored', { signal: abortedController.signal }));
await testRejects('fetch unsupported scheme', () => fetch('file:///tmp/ant-fetch-unsupported'));
summary();

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fetch.js (2 KB)

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