Use service extension in networking integration test #9323
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I don't know why DCM is mad. I didn't touch a single file for which a DCM warning is reported. :/ |
I think you just need to sync with the master branch - Kenzie recently updated the DCM version we are using:#9310 |
packages/devtools_app/integration_test/test/live_connection/network_screen_test.dart
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packages/devtools_app/test/test_infra/fixtures/networking_app/bin/main.dart
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| registerExtension('ext.networking_app.exit', (_, parameters) async { | ||
| unawaited( | ||
| Future.delayed(const Duration(milliseconds: 200)).then((_) => io.exit(0)), |
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Same question about delayed here
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Ah, I'll add a comment here. The issue is that this service extension triggers io.exit(0), but we still need to return a value. I tried unawaited(Future.microtask(() => io.exit(0)));, but that resulted in a test error, that the connected app shutdown unexpectedly. So I think we need to return a ServiceExtensionResponse, let it get through some code layers asynchronously via microtasks, so that the response makes it all the way to DevTools, and then we can exit.
packages/devtools_app/test/test_infra/fixtures/networking_app/bin/main.dart
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packages/devtools_app/integration_test/test/live_connection/network_screen_test.dart
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| registerExtension('ext.networking_app.exit', (_, parameters) async { | ||
| unawaited( | ||
| Future.delayed(const Duration(milliseconds: 200)).then((_) => io.exit(0)), |
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Ah, I'll add a comment here. The issue is that this service extension triggers io.exit(0), but we still need to return a value. I tried unawaited(Future.microtask(() => io.exit(0)));, but that resulted in a test error, that the connected app shutdown unexpectedly. So I think we need to return a ServiceExtensionResponse, let it get through some code layers asynchronously via microtasks, so that the response makes it all the way to DevTools, and then we can exit.
This change is a no-op. We change the communication between the integration test itself and the test app, from an HTTP connection to a VM service extension system. This vastly simplifies the test.
The motivation for this PR is to support a "test app" hot restart, in the integration test. Since this PR is quite large already, I'm saving that for the next PR.