Affects PMD Version: 7.23.0

Rule: UnusedPrivateField

Description: When a private field is used as an argument source for a @ParameterizedTest, it is reported as unused by PMD.

Code Sample demonstrating the issue:

import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.FieldSource;

import java.util.List;

class FooTest {
    private static final List<String> foo = List.of("a");

    @ParameterizedTest
    @FieldSource("foo")
    void testFoo(String arg) {}
}

Expected outcome:

PMD reports a violation at line 7, but that's wrong. That's a false positive.

Running PMD through: CLI