in src/OpenTelemetryEngineTests/Traces/FunctionsActivityBuilderTests.cs [44:56]
public void StopInternalActivity_StopsActivity()
{
string invocationId = Guid.NewGuid().ToString();
var startActivityResponse = FunctionsActivityBuilder.StartInternalActivity(invocationId, "", "");
Assert.NotNull(startActivityResponse);
Assert.NotNull(startActivityResponse.activity);
Assert.False(startActivityResponse.activity.IsStopped);
FunctionsActivityBuilder.StopInternalActivity(invocationId);
Assert.True(startActivityResponse.activity.IsStopped);
}