Generate assertions for Java records

[maciejwalkowiak]

No description provided.

[Berlizov]

Records are supported, but through a hack:

import org.assertj.assertions.generator.GenerateAssertion;

@GenerateAssertion
public record Item(String name, Integer value) {}

If you add the @GenerateAssertion, it generates a full Assert class:

@javax.annotation.Generated(value="assertj-assertions-generator")
public abstract class AbstractItemAssert<S extends AbstractItemAssert<S, A>, A extends Item> extends AbstractObjectAssert<S, A> {
  protected AbstractItemAssert(A actual, Class<S> selfType) {...}
  public S hasHashCode(int hashCode) {...}
  public S hasName(String name) {...}
  public S hasToString(String toString) {...}
  public S hasValue(Integer value) {...}
}

But there are three disadvantages:

• need to add the annotation to each record, or to a class that not uses old-school getter notation (getFoo);
• not everyone wants to add a new dependency (org.assertj:assertj-assertions-generator) to a project just for one annotation;
• this approach generates garbage hasHashCode and hasToString methods. But of course, all standard AbstractAssert's methods such as asString remain.

[scordio]

We are currently focusing on the next release for AssertJ. As soon as that is done, we'll revamp the generator projects and address these additional topics.