TestEnvironment with external service - failing tests throws IllegalStateException errors

TestWorkflowExtension throws diagnostics error when

• using useExternalService
• and tests Fail

https://github.com/temporalio/sdk-java/blob/master/temporal-testing/src/main/java/io/temporal/testing/TestWorkflowEnvironmentInternal.java#L262

Expected Behavior

Failed tests
.
.
.

Actual Behavior

java.lang.IllegalStateException: getDiagnostics is not supported with the external service
	at com.google.common.base.Preconditions.checkState(Preconditions.java:512)

Steps to Reproduce the Problem

class SampleTest {

  @RegisterExtension
  public static final TestWorkflowExtension workflowExtension =
      TestWorkflowExtension.newBuilder().setDoNotStart(true).useExternalService().build();

  @Test
  void sampleTest(TestWorkflowEnvironment environment) {
    Assert.assertEquals(1, 2);
  }
}

Specifications

• Version:
• Platform:

Start at temporal-testing/src/main/java/io/temporal/testing/TestWorkflowEnvironmentInternal.java around line 262 and reproduce the failure with TestWorkflowExtension configured with useExternalService and setDoNotStart(true). Trace why a failing test reaches the unsupported diagnostics call; done means the test reports its assertion failure instead of an IllegalStateException.