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/*
* Copyright (C) 2023, Google LLC
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0 which is available at
* https://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package org.eclipse.jgit.internal.storage.file;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertThrows;
import org.junit.Assert;
import org.junit.Test;
public class UInt24ArrayTest {
private static final byte[] DATA = { 0x00, 0x00, 0x00, // 0
0x00, 0x00, 0x05, // 5
0x00, 0x00, 0x0a, // 10
0x00, 0x00, 0x0f, // 15
0x00, 0x00, 0x14, // 20
0x00, 0x00, 0x19, // 25
(byte) 0xff, 0x00, 0x00, // Uint with MSB=1
(byte) 0xff, (byte) 0xff, (byte) 0xff, // MAX
};
private static final UInt24Array asArray = new UInt24Array(DATA);
@Test
public void uInt24Array_size() {
assertEquals(8, asArray.size());
}
@Test
public void uInt24Array_get() {
assertEquals(0, asArray.get(0));
assertEquals(5, asArray.get(1));
assertEquals(10, asArray.get(2));
assertEquals(15, asArray.get(3));
assertEquals(20, asArray.get(4));
assertEquals(25, asArray.get(5));
assertEquals(0xff0000, asArray.get(6));
assertEquals(0xffffff, asArray.get(7));
assertThrows(IndexOutOfBoundsException.class, () -> asArray.get(9));
}
@Test
public void uInt24Array_getLastValue() {
assertEquals(0xffffff, asArray.getLastValue());
}
@Test
public void uInt24Array_find() {
assertEquals(0, asArray.binarySearch(0));
assertEquals(1, asArray.binarySearch(5));
assertEquals(2, asArray.binarySearch(10));
assertEquals(3, asArray.binarySearch(15));
assertEquals(4, asArray.binarySearch(20));
assertEquals(5, asArray.binarySearch(25));
assertEquals(6, asArray.binarySearch(0xff0000));
assertEquals(7, asArray.binarySearch(0xffffff));
assertThrows(IllegalArgumentException.class,
() -> asArray.binarySearch(Integer.MAX_VALUE));
}
@Test
public void uInt24Array_empty() {
Assert.assertTrue(UInt24Array.EMPTY.isEmpty());
assertEquals(0, UInt24Array.EMPTY.size());
assertEquals(-1, UInt24Array.EMPTY.binarySearch(1));
assertThrows(IndexOutOfBoundsException.class,
() -> UInt24Array.EMPTY.getLastValue());
assertThrows(IndexOutOfBoundsException.class,
() -> UInt24Array.EMPTY.get(0));
}
}
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