@Test public void testEquals() { TupleDesc singleInt = new TupleDesc(new Type[] {Type.INT_TYPE}); TupleDesc singleInt2 = new TupleDesc(new Type[] {Type.INT_TYPE}); TupleDesc intString = new TupleDesc(new Type[] {Type.INT_TYPE, Type.STRING_TYPE}); // .equals() with null should return false assertFalse(singleInt.equals(null)); // .equals() with the wrong type should return false assertFalse(singleInt.equals(new Object())); assertTrue(singleInt.equals(singleInt)); assertTrue(singleInt.equals(singleInt2)); assertTrue(singleInt2.equals(singleInt)); assertTrue(intString.equals(intString)); assertFalse(singleInt.equals(intString)); assertFalse(singleInt2.equals(intString)); assertFalse(intString.equals(singleInt)); assertFalse(intString.equals(singleInt2)); }