| Jack Franklin | 45522ff | 2023-06-01 13:19:51 | [diff] [blame^] | 1 | // Copyright 2023 The Chromium Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | import * as Timeline from '../../../../../front_end/panels/timeline/timeline.js'; |
| 6 | import type * as TimelineModel from '../../../../../front_end/models/timeline_model/timeline_model.js'; |
| 7 | import type * as SDK from '../../../../../front_end/core/sdk/sdk.js'; |
| 8 | |
| 9 | async function loadWebDevTraceAsFile(): Promise<File> { |
| 10 | const file = new URL('../../../fixtures/traces/web-dev.json.gz', import.meta.url); |
| 11 | const response = await fetch(file); |
| 12 | const asBlob = await response.blob(); |
| 13 | const asFile = new File([asBlob], 'web-dev.json.gz', { |
| 14 | type: 'application/gzip', |
| 15 | }); |
| 16 | return asFile; |
| 17 | } |
| 18 | |
| 19 | describe('TimelineLoader', () => { |
| 20 | it('can load a saved file', async () => { |
| 21 | const file = await loadWebDevTraceAsFile(); |
| 22 | |
| 23 | const loadingStartedSpy = sinon.spy(); |
| 24 | const loadingProgressSpy = sinon.spy(); |
| 25 | const processingStartedSpy = sinon.spy(); |
| 26 | const loadingCompleteSpy = sinon.spy(); |
| 27 | |
| 28 | const client: Timeline.TimelineLoader.Client = { |
| 29 | async loadingStarted() { |
| 30 | loadingStartedSpy(); |
| 31 | }, |
| 32 | async loadingProgress(progress?: number) { |
| 33 | loadingProgressSpy(progress); |
| 34 | }, |
| 35 | async processingStarted() { |
| 36 | processingStartedSpy(); |
| 37 | }, |
| 38 | async loadingComplete( |
| 39 | tracingModel: SDK.TracingModel.TracingModel|null, |
| 40 | exclusiveFilter: TimelineModel.TimelineModelFilter.TimelineModelFilter|null, |
| 41 | ) { |
| 42 | loadingCompleteSpy(tracingModel, exclusiveFilter); |
| 43 | }, |
| 44 | }; |
| 45 | await Timeline.TimelineLoader.TimelineLoader.loadFromFile(file, client); |
| 46 | |
| 47 | assert.isTrue(loadingStartedSpy.calledOnce); |
| 48 | // Exact number is deterministic so we can assert, but the fact it was 28 |
| 49 | // calls doesn't really matter. We just want to check it got called "a |
| 50 | // bunch of times". |
| 51 | assert.strictEqual(loadingProgressSpy.callCount, 28); |
| 52 | assert.isTrue(processingStartedSpy.calledOnce); |
| 53 | assert.isTrue(loadingCompleteSpy.calledOnce); |
| 54 | |
| 55 | // Get the arguments of the first (and only) call to the loadingComplete |
| 56 | // function. TS doesn't know what the types are (they are [any, any] by |
| 57 | // default), so we tell it that they align with the types of the |
| 58 | // loadingComplete parameters. |
| 59 | const [tracingModel, exclusiveFilter] = |
| 60 | loadingCompleteSpy.args[0] as Parameters<Timeline.TimelineLoader.Client['loadingComplete']>; |
| 61 | assert.isNull(exclusiveFilter); // We are not filtering out any events for this trace. |
| 62 | if (!tracingModel) { |
| 63 | throw new Error('No tracing model found from results of loadTraceFromFile'); |
| 64 | } |
| 65 | // Ensure that we loaded something that looks about right! |
| 66 | assert.lengthOf(tracingModel.allRawEvents(), 8252); |
| 67 | }); |
| 68 | }); |