chrome-devtools-frontend
Version:
Chrome DevTools UI
63 lines (50 loc) • 2.3 kB
text/typescript
// Copyright 2020 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import * as JavascriptMetadata from './javascript_metadata.js';
describe('JavaScriptMetadata', () => {
let metadata: JavascriptMetadata.JavaScriptMetadata.JavaScriptMetadataImpl;
before(() => {
metadata = new JavascriptMetadata.JavaScriptMetadata.JavaScriptMetadataImpl();
});
it('retrieves native signature by name', () => {
const signatures = metadata.signaturesForNativeFunction('webkitRequestFullScreen');
assert.deepEqual(signatures, [['?options']]);
});
it('does not retrieve native signatures that are bound to an instance', () => {
const signatures = metadata.signaturesForNativeFunction('find');
assert.isNull(signatures);
});
describe('with static methods', () => {
it('retrieves by name and class', () => {
const signatures = metadata.signaturesForStaticMethod('from', 'Array');
assert.deepEqual(signatures, [['iterable', '?mapfn', '?thisArg'], ['arrayLike', '?mapfn', '?thisArg']]);
});
it('does not retrieve methods that are bound to an instance', () => {
const signatures = metadata.signaturesForStaticMethod('includes', 'Array');
assert.isNull(signatures);
});
it('handles a non-existing class', () => {
const signatures = metadata.signaturesForStaticMethod('includes', 'bogus');
assert.isNull(signatures);
});
});
describe('with instance methods', () => {
it('retrieves by name and class', () => {
const signatures = metadata.signaturesForInstanceMethod('assign', 'HTMLSlotElement');
assert.deepEqual(signatures, [['...nodes']]);
});
it('does not retrieve methods that are unbound', () => {
const signatures = metadata.signaturesForInstanceMethod('webkitRequestFullScreen', 'window');
assert.isNull(signatures);
});
it('does not retrieve static methods', () => {
const signatures = metadata.signaturesForInstanceMethod('from', 'Array');
assert.isNull(signatures);
});
it('handles a non-existing class', () => {
const signatures = metadata.signaturesForInstanceMethod('from', 'Sheep');
assert.isNull(signatures);
});
});
});