TIOBE - Java Coding Standard

Rule: JUnit9

This rule is Obsolete
Synopsis:	Use assertNull(x) instead of assertTrue(x==null), or assertNotNull(x) vs assertFalse(x==null)
Language:	Java
Severity Level:	4
Category:	JUnit

Description:

This rule detects JUnit assertions in object references equality. These assertions should be made by more specific methods, like assertNull, assertNotNull.

public class FooTest extends TestCase {
  void testCode() {
   Object a = doSomething();
   assertTrue(a==null); // bad usage
   assertNull(a);  // good usage
   assertTrue(a != null); // bad usage
   assertNotNull(a);  // good usage
  }
 }