AssertUtil { public static void notNull(Object o, String message) { isTrue(o != null, message); }  static void isTrue(boolean b, String message); static void isFalse(boolean b, String message); static void isNull(Object o, String message); static void notNull(Object o, String message); static void isEqual(int v1, int v2, String message); static void isStrictlyPositive(long value, String message); static void isBetween(double value, double lowerBd, double upperBd, String message);  }
@Test public void testNotNull_trueValue() { notNull("foo", "The param must be null"); }
@Test(expected = IllegalArgumentException.class) public void testNotNull_falseValue() { notNull(null, "The param must be null"); }