bug(HarnessLoader): Unit tests fail when the harness loader is created in beforeEach #21632
Description
Reproduction
The unit tests fail when the harness loader is created in an async beforeEach and the TS target is ES2018.
StackBlitz Demo
There are three solutions to this problem.
- Move the call to
TestbedHarnessEnvironment.loaderto theitfunction (demo). - Use
waitForAsyncin thebeforeEachinstead of an async function (demo). - Change the target to ES2016 (demo).
Steps to reproduce:
- Create a unit test
describeblock that includes the harness loader. - Assign the harness loader in the
beforeEachfunction. - Get a harness with
await loader.getHanderin an asyncitfunction.
Expected Behavior
I'd expect the test to pass, because it is setup as described in component harness documentation and ES2018 is the generated default target.
Actual Behavior
TestbedHarnessEnvironment.loader returns undefined in the beforeEach, and the test fails with the following.
Error: Expected to be running in 'ProxyZone', but it was not found.
at Function.ProxyZoneSpec.assertPresent (https://harness-issue-hsdvet.stackblitz.io/turbo_modules/[email protected]/dist/proxy.js:39:23)
at Function.TaskStateZoneInterceptor.setup (https://harness-issue-hsdvet.stackblitz.io/turbo_modules/@angular/[email protected]/bundles/cdk-testing-testbed.umd.js:354:42)
at new TestbedHarnessEnvironment (https://harness-issue-hsdvet.stackblitz.io/turbo_modules/@angular/[email protected]/bundles/cdk-testing-testbed.umd.js:1167:57)
at Function.TestbedHarnessEnvironment.loader (https://harness-issue-hsdvet.stackblitz.io/turbo_modules/@angular/[email protected]/bundles/cdk-testing-testbed.umd.js:1177:20)
at UserContext.eval (https://harness-issue-hsdvet.stackblitz.io/~/src/app/button-harness-example.spec.ts:21:54)
TypeError: Cannot read property 'getHarness' of undefined
at UserContext.eval (https://harness-issue-hsdvet.stackblitz.io/~/src/app/button-harness-example.spec.ts:24:37)
at ZoneDelegate.invoke (https://harness-issue-hsdvet.stackblitz.io/turbo_modules/[email protected]/dist/zone.js:395:30)
at ProxyZoneSpec.onInvoke (https://harness-issue-hsdvet.stackblitz.io/turbo_modules/[email protected]/dist/proxy.js:125:43)
at ZoneDelegate.invoke (https://harness-issue-hsdvet.stackblitz.io/turbo_modules/[email protected]/dist/zone.js:394:56)
at Zone.run (https://harness-issue-hsdvet.stackblitz.io/turbo_modules/[email protected]/dist/zone.js:155:47)
at runInTestZone (https://harness-issue-hsdvet.stackblitz.io/turbo_modules/[email protected]/dist/jasmine-patch.js:203:38)
at UserContext.eval (https://harness-issue-hsdvet.stackblitz.io/turbo_modules/[email protected]/dist/jasmine-patch.js:218:24)
at <Jasmine>Environment
- Angular: 11.0.9
- CDK/Material: 11.0.4
- Browser(s): Chrome 87.0.4280.141
- Operating System (e.g. Windows, macOS, Ubuntu): macOS 11.1