mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Ruslan Shestopalyuk
dc7941d732
Summary: Changelog: [Internal] Implements a shim for the NativePerformance TurboModule, which can be used as a mock to unit test the JS side of WebPerformance functionality (in particular, the higher level API logic of `Performance` and `PerformanceObserver` implementations in JS) without need to have the native NativePerformance implementation available (which would otherwise require running some heavy weight e2e tests). Reviewed By: rubennorte Differential Revision: D43985454 fbshipit-source-id: da10387c1d70cb0300c077972d3925bc2fad4f5e
83 lines
2.3 KiB
JavaScript
83 lines
2.3 KiB
JavaScript
/**
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @format
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* @oncall react_native
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*/
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const NativePerformanceMock = require('../__mocks__/NativePerformance').default;
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const PerformanceObserver = require('../PerformanceObserver').default;
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describe('NativePerformanceMock', () => {
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jest.mock(
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'../NativePerformanceObserver',
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() => require('../__mocks__/NativePerformanceObserver').default,
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);
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it('marks get reported', async () => {
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let entries = [];
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const observer = new PerformanceObserver((list, _observer) => {
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entries = [...entries, ...list.getEntries()];
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});
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observer.observe({type: 'mark'});
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NativePerformanceMock.mark('mark1', 0, 10);
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NativePerformanceMock.mark('mark2', 5, 10);
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NativePerformanceMock.mark('mark3', 10, 20);
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await jest.runAllTicks();
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expect(entries).toHaveLength(3);
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expect(entries.map(e => e.name)).toStrictEqual(['mark1', 'mark2', 'mark3']);
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expect(entries.map(e => e.startTime)).toStrictEqual([0, 5, 10]);
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});
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it('measures get reported', async () => {
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let entries = [];
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const observer = new PerformanceObserver((list, _observer) => {
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entries = [...entries, ...list.getEntries()];
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});
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observer.observe({entryTypes: ['measure']});
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NativePerformanceMock.mark('mark0', 0.0, 1.0);
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NativePerformanceMock.mark('mark1', 1.0, 3.0);
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NativePerformanceMock.mark('mark2', 2.0, 4.0);
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NativePerformanceMock.measure('measure0', 0, 2);
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NativePerformanceMock.measure('measure1', 0, 2, 4);
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NativePerformanceMock.measure(
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'measure2',
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0,
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0,
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undefined,
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'mark1',
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'mark2',
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);
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NativePerformanceMock.measure('measure3', 0, 0, 5, 'mark1');
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NativePerformanceMock.measure(
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'measure4',
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1.5,
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0,
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undefined,
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undefined,
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'mark2',
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);
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await jest.runAllTicks();
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expect(entries).toHaveLength(5);
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expect(entries.map(e => e.name)).toStrictEqual([
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'measure0',
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'measure1',
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'measure2',
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'measure3',
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'measure4',
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]);
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expect(entries.map(e => e.startTime)).toStrictEqual([0, 0, 1, 1, 1.5]);
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expect(entries.map(e => e.duration)).toStrictEqual([2, 4, 1, 5, 0.5]);
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});
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});
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