dart test with --pause-after-load flag does not print DevTools URI

[kenzieschmoll]

dart test test/nested/simple_test_1.dart --pause-after-load
Resolving dependencies in `/Users/kenzieschmoll/develop/devtools/packages/devtools_extensions/example/app_that_uses_foo`...
Downloading packages...
Got dependencies in `/Users/kenzieschmoll/develop/devtools/packages/devtools_extensions/example/app_that_uses_foo`.
Building package executable... (6.5s)
Built test:test.
00:01 +0: loading test/nested/simple_test_1.dart

Observatory URL: http://127.0.0.1:58787/zPMwLkxnluk=/#/inspect?isolateId=isolates%2F6734125496635939&objectId=libraries%2F%4018483025
The test runner is paused. Open the Observatory and set breakpoints. Once you're finished, return to this terminal and
press Enter.

Opening the observatory URI shows this:

@jakemac53 @bkonyi

[jakemac53]

@natebosch can you look at this one?

[bkonyi]

FYI, this is related to dart-lang/test#2185

[natebosch]

From the linked issue it looks like there is some required work in dart test. Have we verified that dart test is capable of serving dev tools?

[bkonyi]

From the linked issue it looks like there is some required work in dart test. Have we verified that dart test is capable of serving dev tools?

Looks like that wasn't covered by the migration to launch DDS from the VM service instead of DartDev. This CL should resolve that: https://dart-review.googlesource.com/c/sdk/+/366560.