[code-reflection] RFR: Transform runtime test to JUnit

[Adam Sotona]

On Fri, 19 Sep 2025 09:17:37 GMT, Mourad Abbay <mabbay at openjdk.org> wrote:

> Transform runtime test to JUnit.

test/jdk/java/lang/reflect/code/bytecode/TestBytecode.java line 716:

> 714:                     if (receiver1 != null) argl.add(receiver1);
> 715:                     argl.addAll(Arrays.asList(args));
> 716:                     Assertions.assertEquals(d.testMethod.invoke(receiver2, args), mh.invokeWithArguments(argl));

TestNG `Assert.assertEquals(Object, Object)` does much more complex comparison than its JUnit peer.
If the arguments represents arrays, it compares them by content.
A fragment of that functionality (to satisfy types compared in this test) can be mocked in JUnit by following code:

    static void assertEquals(Object expected, Object actual) {
        switch (expected) {
            case int[] expArr when actual instanceof int[] actArr ->
                Assertions.assertArrayEquals(expArr, actArr);
            case Object[] expArr when actual instanceof Object[] actArr ->
                Assertions.assertArrayEquals(expArr, actArr);
            case null ->
                Assertions.assertEquals(expected, actual);
            default ->
                Assertions.assertEquals(expected, actual);
        }
    }

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PR Review Comment: https://git.openjdk.org/babylon/pull/578#discussion_r2362449653