TestArrayUtilpublic class TestArrayUtil extends TestCase
| Methods Summary |
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| private java.lang.Integer[] | getIntsList()Helper for testArrayMoveWithin
return new Integer[] {
new Integer(0),
new Integer(1),
new Integer(2),
new Integer(3),
new Integer(4),
new Integer(5),
new Integer(6),
new Integer(7),
new Integer(8),
new Integer(9)
};
| | public void | testArrayMoveWithin()Test to ensure that arrayMoveWithin works as expected
Integer[] ints = getIntsList();
assertEquals(new Integer(0), ints[0]);
assertEquals(new Integer(1), ints[1]);
assertEquals(new Integer(2), ints[2]);
assertEquals(new Integer(3), ints[3]);
assertEquals(new Integer(4), ints[4]);
assertEquals(new Integer(5), ints[5]);
assertEquals(new Integer(6), ints[6]);
assertEquals(new Integer(7), ints[7]);
assertEquals(new Integer(8), ints[8]);
assertEquals(new Integer(9), ints[9]);
//
// Moving to a later point in the array
//
// Shift 1 back
ints = getIntsList();
ArrayUtil.arrayMoveWithin(ints, 4, 8, 1);
assertEquals(new Integer(0), ints[0]);
assertEquals(new Integer(1), ints[1]);
assertEquals(new Integer(2), ints[2]);
assertEquals(new Integer(3), ints[3]);
assertEquals(new Integer(5), ints[4]);
assertEquals(new Integer(6), ints[5]);
assertEquals(new Integer(7), ints[6]);
assertEquals(new Integer(8), ints[7]);
assertEquals(new Integer(4), ints[8]);
assertEquals(new Integer(9), ints[9]);
// Shift front 1 back
ints = getIntsList();
ArrayUtil.arrayMoveWithin(ints, 0, 7, 1);
assertEquals(new Integer(1), ints[0]);
assertEquals(new Integer(2), ints[1]);
assertEquals(new Integer(3), ints[2]);
assertEquals(new Integer(4), ints[3]);
assertEquals(new Integer(5), ints[4]);
assertEquals(new Integer(6), ints[5]);
assertEquals(new Integer(7), ints[6]);
assertEquals(new Integer(0), ints[7]);
assertEquals(new Integer(8), ints[8]);
assertEquals(new Integer(9), ints[9]);
// Shift 1 to end
ints = getIntsList();
ArrayUtil.arrayMoveWithin(ints, 4, 9, 1);
assertEquals(new Integer(0), ints[0]);
assertEquals(new Integer(1), ints[1]);
assertEquals(new Integer(2), ints[2]);
assertEquals(new Integer(3), ints[3]);
assertEquals(new Integer(5), ints[4]);
assertEquals(new Integer(6), ints[5]);
assertEquals(new Integer(7), ints[6]);
assertEquals(new Integer(8), ints[7]);
assertEquals(new Integer(9), ints[8]);
assertEquals(new Integer(4), ints[9]);
//
// Moving to an earlier point in the array
//
// Shift 1 forward
ints = getIntsList();
ArrayUtil.arrayMoveWithin(ints, 8, 3, 1);
assertEquals(new Integer(0), ints[0]);
assertEquals(new Integer(1), ints[1]);
assertEquals(new Integer(2), ints[2]);
assertEquals(new Integer(8), ints[3]);
assertEquals(new Integer(3), ints[4]);
assertEquals(new Integer(4), ints[5]);
assertEquals(new Integer(5), ints[6]);
assertEquals(new Integer(6), ints[7]);
assertEquals(new Integer(7), ints[8]);
assertEquals(new Integer(9), ints[9]);
// Shift end 1 forward
ints = getIntsList();
ArrayUtil.arrayMoveWithin(ints, 9, 2, 1);
assertEquals(new Integer(0), ints[0]);
assertEquals(new Integer(1), ints[1]);
assertEquals(new Integer(9), ints[2]);
assertEquals(new Integer(2), ints[3]);
assertEquals(new Integer(3), ints[4]);
assertEquals(new Integer(4), ints[5]);
assertEquals(new Integer(5), ints[6]);
assertEquals(new Integer(6), ints[7]);
assertEquals(new Integer(7), ints[8]);
assertEquals(new Integer(8), ints[9]);
// Shift 1 to front
ints = getIntsList();
ArrayUtil.arrayMoveWithin(ints, 5, 0, 1);
assertEquals(new Integer(5), ints[0]);
assertEquals(new Integer(0), ints[1]);
assertEquals(new Integer(1), ints[2]);
assertEquals(new Integer(2), ints[3]);
assertEquals(new Integer(3), ints[4]);
assertEquals(new Integer(4), ints[5]);
assertEquals(new Integer(6), ints[6]);
assertEquals(new Integer(7), ints[7]);
assertEquals(new Integer(8), ints[8]);
assertEquals(new Integer(9), ints[9]);
//
// Moving many to a later point in the array
//
// Shift 3 back
ints = getIntsList();
ArrayUtil.arrayMoveWithin(ints, 2, 6, 3);
assertEquals(new Integer(0), ints[0]);
assertEquals(new Integer(1), ints[1]);
assertEquals(new Integer(5), ints[2]);
assertEquals(new Integer(6), ints[3]);
assertEquals(new Integer(7), ints[4]);
assertEquals(new Integer(8), ints[5]);
assertEquals(new Integer(2), ints[6]);
assertEquals(new Integer(3), ints[7]);
assertEquals(new Integer(4), ints[8]);
assertEquals(new Integer(9), ints[9]);
// Shift 3 to back
ints = getIntsList();
ArrayUtil.arrayMoveWithin(ints, 2, 7, 3);
assertEquals(new Integer(0), ints[0]);
assertEquals(new Integer(1), ints[1]);
assertEquals(new Integer(5), ints[2]);
assertEquals(new Integer(6), ints[3]);
assertEquals(new Integer(7), ints[4]);
assertEquals(new Integer(8), ints[5]);
assertEquals(new Integer(9), ints[6]);
assertEquals(new Integer(2), ints[7]);
assertEquals(new Integer(3), ints[8]);
assertEquals(new Integer(4), ints[9]);
// Shift from 3 front
ints = getIntsList();
ArrayUtil.arrayMoveWithin(ints, 0, 5, 3);
assertEquals(new Integer(3), ints[0]);
assertEquals(new Integer(4), ints[1]);
assertEquals(new Integer(5), ints[2]);
assertEquals(new Integer(6), ints[3]);
assertEquals(new Integer(7), ints[4]);
assertEquals(new Integer(0), ints[5]);
assertEquals(new Integer(1), ints[6]);
assertEquals(new Integer(2), ints[7]);
assertEquals(new Integer(8), ints[8]);
assertEquals(new Integer(9), ints[9]);
//
// Moving many to an earlier point in the array
//
// Shift 3 forward
ints = getIntsList();
ArrayUtil.arrayMoveWithin(ints, 6, 2, 3);
assertEquals(new Integer(0), ints[0]);
assertEquals(new Integer(1), ints[1]);
assertEquals(new Integer(6), ints[2]);
assertEquals(new Integer(7), ints[3]);
assertEquals(new Integer(8), ints[4]);
assertEquals(new Integer(2), ints[5]);
assertEquals(new Integer(3), ints[6]);
assertEquals(new Integer(4), ints[7]);
assertEquals(new Integer(5), ints[8]);
assertEquals(new Integer(9), ints[9]);
// Shift 3 to front
ints = getIntsList();
ArrayUtil.arrayMoveWithin(ints, 6, 0, 3);
assertEquals(new Integer(6), ints[0]);
assertEquals(new Integer(7), ints[1]);
assertEquals(new Integer(8), ints[2]);
assertEquals(new Integer(0), ints[3]);
assertEquals(new Integer(1), ints[4]);
assertEquals(new Integer(2), ints[5]);
assertEquals(new Integer(3), ints[6]);
assertEquals(new Integer(4), ints[7]);
assertEquals(new Integer(5), ints[8]);
assertEquals(new Integer(9), ints[9]);
// Shift from 3 back
ints = getIntsList();
ArrayUtil.arrayMoveWithin(ints, 7, 3, 3);
assertEquals(new Integer(0), ints[0]);
assertEquals(new Integer(1), ints[1]);
assertEquals(new Integer(2), ints[2]);
assertEquals(new Integer(7), ints[3]);
assertEquals(new Integer(8), ints[4]);
assertEquals(new Integer(9), ints[5]);
assertEquals(new Integer(3), ints[6]);
assertEquals(new Integer(4), ints[7]);
assertEquals(new Integer(5), ints[8]);
assertEquals(new Integer(6), ints[9]);
// Check can't shift more than we have
try {
ints = getIntsList();
ArrayUtil.arrayMoveWithin(ints, 7, 3, 5);
fail();
} catch(IllegalArgumentException e) {
// Good, we don't have 5 from 7 onwards
}
// Check can't shift where would overshoot
try {
ints = getIntsList();
ArrayUtil.arrayMoveWithin(ints, 2, 7, 5);
fail();
} catch(IllegalArgumentException e) {
// Good, we can't fit 5 in starting at 7
}
| | public void | testarraycopy()Test to ensure that our own arraycopy behaves as it should do
byte[] bytes = new byte[] { 0x01, 0x02, 0x03, 0x04 };
// Test copy whole thing
byte[] dest = new byte[4];
ArrayUtil.arraycopy(bytes, 0, dest, 0, 4);
assertEquals(dest.length, bytes.length);
for(int i=0; i<dest.length; i++) {
assertEquals(bytes[i], dest[i]);
}
// ToDo - test exceptions are as expected
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