Can I resource lock depending on the @ParameterizedTest values?

[Arthurm1]

Is there a way to lock based on the input of a parameterized test?

With something like...

@Execution(ExecutionMode.CONCURRENT)
class MyTests {

  static Stream<String> myResourceInputs() {
    return Stream.of("Foo", "Bar");
  }

  @ParameterizedTest
  @MethodSource("myResourceInputs")
  public void testA(String resource) {}

  @ParameterizedTest
  @MethodSource("myResourceInputs")
  public void testB(String resource) {}
}

I'd like to lock on the resource being passed.

So testA("Foo") could run concurrently with testB("Bar") but not with testB("Foo").

Is that currently possible?

If not could ResourceLocksProvider#provideForMethod be changed to also accept the MethodSource values?

e.g.

Set<ResourceLocksProvider.Lock> provideForMethod(List<Class<?>> enclosingInstanceTypes,
                                                 Class<?> testClass,
                                                 Method testMethod,
                                                 Object... methodArgs)

Where methodArgs would be "Foo" when running testA("Foo")

[marcphilipp]

No, that's currently not possible and I don't think it would be feasible. Resource locks need to be known prior to execution (to avoid deadlocks) and method parameters are only known during execution.

[Arthurm1]

Thanks for the quick reply.

I can setup a map of locks inside my test to do this but the downside is that all the test methods run immediately and wait on the locks which means that the resulting test duration is completely inaccurate.

Is there any way to affect start time from inside a running test - i.e. I'd set the start time to be after the test has obtained the locks? I'm guessing not but maybe?

[marcphilipp]

No, there's no way to do that.

[Arthurm1]

OK - thanks for the info.