Running assertj generator on JDK 11

[nickstolwijk]

I am trying to build a library with OpenJDK 11 with the maven-assertj-generator plugin enabled. However, the plugin succeeds, but generates non-compiling code.

Has anyone had any succes on running the assertj-generator with OpenJDK 11?

Generated code:

/**
   * Verifies that the actual Melding's referenties contains the given interface Referentie elements.
   * @param referenties the given elements that should be contained in actual Melding's referenties.
   * @return this assertion object.
   * @throws AssertionError if the actual Melding's referenties does not contain all given interface Referentie elements.
   */
  public MeldingAssert hasReferenties(interface Referentie... referenties) {
    // check that actual Melding we want to make assertions on is not null.
    isNotNull();

    // check that given interface Referentie varargs is not null.
    if (referenties == null) failWithMessage("Expecting referenties parameter not to be null.");

    // check with standard error message, to set another message call: info.overridingErrorMessage("my error message");
    Iterables.instance().assertContains(info, actual.getReferenties(), referenties);

    // return the current assertion for method chaining
    return this;
  }

Wrong line:
public MeldingAssert hasReferenties(interface Referentie... referenties) {
Expected line:
public MeldingAssert hasReferenties(Referentie... referenties) {

To solve the issue, I tried building the assertj-assertions-generator on OpenJDK 11, but I also ran into all kinds of trouble.

• Tried to build a latest version of com.google.testing.compile:compile-testing
• Tried to upgrade Guava
• Needed to upgrade to JDK 8 source code
• Ran into troubles running JUnit Theories

[joel-costigliola]

The generator has not been tested on JDK 11 indeed.
It looks like the issue is related to introspection, there might have been differences with JDK 11 as per finding type names.
I haven't much time to spend on the generator but I'm happy to review PRs if you feel like fixing the issue.

[NeoJustin]

It looks like JDK 11 is not the issue here, since I have the same issue with a JDK 8 installed.
I have made it work with the assertj-assertions-generator-maven-plugin version at 2.0.0 and assertj-core at 3.9.0 (higher version gives other errors) for now.

[joel-costigliola]

@NeoJustin thanks for the feedback!