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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