[JUnit 4.13 regression] @BeforeClass shadowing in superclass doesn't work

In JUnit 4.13 version the @BeforeClass method of superclass is run even if it is shadowed by current class, which is not as expected according to current JUnit 4.12 behaviour and @BeforeClass javadoc:

The "@BeforeClass" methods of superclasses will be run before those of the current class,
unless they are shadowed in the current class.

Repro code:

class Junit413RegressionSuperclass {
  @BeforeClass
  public static void beforeAll() {
    System.out.println("beforeAll - superclass");
  }
}

public class Junit413Regression extends Junit413RegressionSuperclass {
  @BeforeClass
  public static void beforeAll() {
    System.out.println("beforeAll - class");
  }

  @Test
  public void test() {
    System.out.println("test - class");
  }
}

Expected output (JUnit 4.12):

beforeAll - class
test - class

Actual output (JUnit 14.13-SNAPSHOT):

beforeAll - superclass
beforeAll - class
test - class

[kcooney]

To make things concrete, here’s one possible fix:

https://github.com/junit-team/junit4/commit/5ef2b8de3d751b7e06cf81dcbf64a155fe490e0a

[kcooney]

Sent out #1514

This change only affects static methods. The behavior of non-static methods is subtlety different in 4.13 due to the fixes for bridge methods.