@Test
public void testIsZeroOrNull() {
Assert.assertTrue(IntArrayComparator.isZeroOrNull(null));
Assert.assertTrue(IntArrayComparator.isZeroOrNull(ArrayConstants.ZERO_LENGTH_INT_ARRAY));
Assert.assertTrue(IntArrayComparator.isZeroOrNull(this.zero));
Assert.assertFalse(IntArrayComparator.isZeroOrNull(this.base));
}
@Test
public void testIsEqual() {
Assert.assertFalse(IntArrayComparator.isEqual(null, this.base));
Assert.assertFalse(IntArrayComparator.isEqual(this.lessThanBase, this.base));
Assert.assertFalse(IntArrayComparator.isEqual(ArrayConstants.ZERO_LENGTH_INT_ARRAY, this.base));
Assert.assertFalse(IntArrayComparator.isEqual(this.base, null));
Assert.assertFalse(IntArrayComparator.isEqual(this.base, this.lessThanBase));
Assert.assertFalse(IntArrayComparator.isEqual(this.base, ArrayConstants.ZERO_LENGTH_INT_ARRAY));
Assert.assertTrue(IntArrayComparator.isEqual(this.base, this.equalToBaseButNotSame));
Assert.assertTrue(IntArrayComparator.isEqual(null, null));
Assert.assertTrue(IntArrayComparator.isEqual(this.base, this.equalToBaseButNotSame));
}
@Test
public void testComplementProblem() {
final int[] twoComplementProblemLesser = new int[this.base.length];
final int[] twoComplementProblemGreater = new int[this.base.length];
System.arraycopy(this.base, 0, twoComplementProblemLesser, 0, this.base.length);
System.arraycopy(this.base, 0, twoComplementProblemGreater, 0, this.base.length);
twoComplementProblemLesser[1] = 100;
twoComplementProblemGreater[1] = -100;
Assert.assertTrue(
IntArrayComparator.isLessThan(twoComplementProblemLesser, twoComplementProblemGreater));
}
@Test
public void testCompareArrays() {
Assert.assertEquals(0, IntArrayComparator.compareArrays(this.base, this.equalToBaseButNotSame));
Assert.assertEquals(0, IntArrayComparator.compareArrays(null, null));
Assert.assertEquals(0, IntArrayComparator.compareArrays(this.base, this.equalToBaseButNotSame));
Assert.assertEquals(1, IntArrayComparator.compareArrays(this.base, null));
Assert.assertEquals(1, IntArrayComparator.compareArrays(this.base, this.lessThanBase));
Assert.assertEquals(
1, IntArrayComparator.compareArrays(this.base, ArrayConstants.ZERO_LENGTH_INT_ARRAY));
Assert.assertEquals(-1, IntArrayComparator.compareArrays(null, this.base));
Assert.assertEquals(-1, IntArrayComparator.compareArrays(this.lessThanBase, this.base));
Assert.assertEquals(
-1, IntArrayComparator.compareArrays(ArrayConstants.ZERO_LENGTH_INT_ARRAY, this.base));
// single element compare
Assert.assertEquals(0, IntArrayComparator.compareArrays(new int[] {10}, new int[] {10}));
Assert.assertEquals(1, IntArrayComparator.compareArrays(new int[] {10}, new int[] {8}));
Assert.assertEquals(-1, IntArrayComparator.compareArrays(new int[] {8}, new int[] {10}));
}