зеркало из https://github.com/mozilla/gecko-dev.git
105 строки
3.6 KiB
HTML
105 строки
3.6 KiB
HTML
<!DOCTYPE html>
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<meta charset=utf-8>
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<title>Blob constructor: endings option</title>
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<link rel=help href="https://w3c.github.io/FileAPI/#constructorBlob">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script>
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// Windows platforms use CRLF as the native line ending. All others use LF.
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const crlf = navigator.platform.startsWith('Win');
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const native_ending = crlf ? '\r\n' : '\n';
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function readBlobAsPromise(blob) {
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return new Promise((resolve, reject) => {
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const reader = new FileReader();
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reader.readAsText(blob);
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reader.onload = e => resolve(reader.result);
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reader.onerror = e => reject(reader.error);
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});
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}
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[
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'transparent',
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'native'
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].forEach(value => test(t => {
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assert_class_string(new Blob([], {endings: value}), 'Blob',
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`Constructor should allow "${value}" endings`);
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}, `Valid "endings" value: ${JSON.stringify(value)}`));
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[
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null,
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'',
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'invalidEnumValue',
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'Transparent',
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'NATIVE',
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0,
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{}
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].forEach(value => test(t => {
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assert_throws_js(TypeError, () => new Blob([], {endings: value}),
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'Blob constructor should throw');
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}, `Invalid "endings" value: ${JSON.stringify(value)}`));
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test(t => {
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const test_error = {name: 'test'};
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assert_throws_exactly(
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test_error,
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() => new Blob([], { get endings() { throw test_error; }}),
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'Blob constructor should propagate exceptions from "endings" property');
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}, 'Exception propagation from options');
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test(t => {
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let got = false;
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new Blob([], { get endings() { got = true; } });
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assert_true(got, 'The "endings" property was accessed during construction.');
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}, 'The "endings" options property is used');
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[
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{name: 'LF', input: '\n', native: native_ending},
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{name: 'CR', input: '\r', native: native_ending},
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{name: 'CRLF', input: '\r\n', native: native_ending},
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{name: 'CRCR', input: '\r\r', native: native_ending.repeat(2)},
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{name: 'LFCR', input: '\n\r', native: native_ending.repeat(2)},
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{name: 'LFLF', input: '\n\n', native: native_ending.repeat(2)},
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{name: 'CRCRLF', input: '\r\r\n', native: native_ending.repeat(2)},
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{name: 'CRLFLF', input: '\r\n\n', native: native_ending.repeat(2)},
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{name: 'CRLFCR', input: '\r\n\r\n', native: native_ending.repeat(2)},
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{name: 'CRLFCRLF', input: '\r\n\r\n', native: native_ending.repeat(2)},
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{name: 'LFCRLFCR', input: '\n\r\n\r', native: native_ending.repeat(3)},
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].forEach(testCase => {
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promise_test(async t => {
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const blob = new Blob([testCase.input]);
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assert_equals(
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await readBlobAsPromise(blob), testCase.input,
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'Newlines should not change with endings unspecified');
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}, `Input ${testCase.name} with endings unspecified`);
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promise_test(async t => {
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const blob = new Blob([testCase.input], {endings: 'transparent'});
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assert_equals(
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await readBlobAsPromise(blob), testCase.input,
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'Newlines should not change with endings "transparent"');
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}, `Input ${testCase.name} with endings 'transparent'`);
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promise_test(async t => {
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const blob = new Blob([testCase.input], {endings: 'native'});
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assert_equals(
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await readBlobAsPromise(blob), testCase.native,
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'Newlines should match the platform with endings "native"');
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}, `Input ${testCase.name} with endings 'native'`);
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});
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promise_test(async t => {
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const blob = new Blob(['\r', '\n'], {endings: 'native'});
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const expected = native_ending.repeat(2);
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assert_equals(
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await readBlobAsPromise(blob), expected,
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'CR/LF in adjacent strings should be converted to two platform newlines');
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}, `CR/LF in adjacent input strings`);
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</script>
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