groovy code also verified that there are no attributes for which in java tests we usually use .hasAttributes(Attributes.empty())

thank you for pointing this out, i'll be sure to include these going forward

IDK whether this is worth the effort but instead of anonymous classes could use method local classes, something like

    class TestCommand extends HystrixCommand<String> {

      protected TestCommand(Setter setter) {
        super(setter);
      }

      @Override
      protected String run() throws Exception {
        return tracedMethod();
      }

      private String tracedMethod() {
        testing.runWithSpan("tracedMethod", () -> {});
        return "Hello!";
      }
    }

    HystrixCommand<String> command = new TestCommand(setter());

then here this assertion would be equalTo(stringKey("hystrix.command"), "TestCommand") Then for each test in the same file would need to use a different name for the command to avoid $x in the class name.

great idea, thank you!

To me using Object.equals here doesn't make sense, try assertThat(result).isEqualTo("Hello!");

This is a new addition, not present in the original groovy test. Is this used?

when I was writing the test I had some return type errors for this method and I wrote this to get around them, but now when I remove this code I no longer see those issues so I must have had another unrelated issue at the time that I have since resolved. I have removed the unneeded code from this PR