| // Copyright 2018 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| (async function(testRunner) { |
| const {page, session, dp} = await testRunner.startBlank( |
| `Tests that virtual time advances 10ms on every navigation.`); |
| await dp.Network.enable(); |
| |
| let resourceCounter = 0; |
| dp.Network.onRequestWillBeSent(() => { resourceCounter++ }); |
| await dp.Emulation.setVirtualTimePolicy({policy: 'pause'}); |
| dp.Page.navigate({ |
| url: testRunner.url('resources/virtual-time-error-loop.html')}); |
| // TODO(caseq): this avoids a race between the completion of main resource |
| // loading and granting of the new budget. Without this, we may grant either |
| // before or after the time as advanced when the resource completes loading. |
| // We should probably do something on the backend to avoid the race. |
| await dp.Network.loadingFinished(); |
| dp.Emulation.setVirtualTimePolicy({ |
| policy: 'pauseIfNetworkFetchesPending', |
| budget: 5000, |
| maxVirtualTimeTaskStarvationCount: 1000000}); // starvation prevents flakes |
| await dp.Emulation.onceVirtualTimeBudgetExpired(); |
| testRunner.log('Resources loaded: ' + resourceCounter); |
| testRunner.completeTest(); |
| }) |
