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// Copyright 2015 Google Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.devtools.build.zip;
import static com.google.common.truth.Truth.assertThat;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
import java.util.Calendar;
import java.util.GregorianCalendar;
@RunWith(JUnit4.class)
public class ZipUtilTest {
@Rule public ExpectedException thrown = ExpectedException.none();
@Test public void testShortToLittleEndian() {
byte[] bytes = ZipUtil.shortToLittleEndian((short) 4660);
assertThat(bytes).isEqualTo(new byte[]{ 0x34, 0x12 });
}
@Test public void testShortToLittleEndian_Signed() {
byte[] bytes = ZipUtil.shortToLittleEndian((short) -3532);
assertThat(bytes).isEqualTo(new byte[]{ 0x34, (byte) 0xf2 });
}
@Test public void testIntToLittleEndian() {
byte[] bytes = ZipUtil.intToLittleEndian(305419896);
assertThat(bytes).isEqualTo(new byte[]{ 0x78, 0x56, 0x34, 0x12 });
}
@Test public void testIntToLittleEndian_Signed() {
byte[] bytes = ZipUtil.intToLittleEndian(-231451016);
assertThat(bytes).isEqualTo(new byte[]{ 0x78, 0x56, 0x34, (byte) 0xf2 });
}
@Test public void testLongToLittleEndian() {
byte[] bytes = ZipUtil.longToLittleEndian(305419896);
assertThat(bytes).isEqualTo(new byte[]{ 0x78, 0x56, 0x34, 0x12, 0x0, 0x0, 0x0, 0x0 });
}
@Test public void testLongToLittleEndian_Signed() {
byte[] bytes = ZipUtil.longToLittleEndian(-231451016);
assertThat(bytes).isEqualTo(new byte[]{ 0x78, 0x56, 0x34, (byte) 0xf2,
(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff });
}
@Test public void testGet16() {
short result = ZipUtil.get16(new byte[]{ 0x34, 0x12 }, 0);
assertThat(result).isEqualTo((short) 0x1234);
assertThat(result).isEqualTo((short) 4660);
}
@Test public void testGet16_Signed() {
short result = ZipUtil.get16(new byte[]{ 0x34, (byte) 0xff }, 0);
assertThat(result).isEqualTo((short) 0xff34);
assertThat(result).isEqualTo((short) -204);
}
@Test public void testGet32() {
int result = ZipUtil.get32(new byte[]{ 0x78, 0x56, 0x34, 0x12 }, 0);
assertThat(result).isEqualTo(0x12345678);
assertThat(result).isEqualTo(305419896);
}
@Test public void testGet32_Short() {
int result = ZipUtil.get32(new byte[]{ 0x34, (byte) 0xff, 0x0, 0x0 }, 0);
assertThat(result).isEqualTo(0xff34);
assertThat(result).isEqualTo(65332);
}
@Test public void testGet32_Signed() {
int result = ZipUtil.get32(new byte[]{ 0x34, (byte) 0xff, (byte) 0xff, (byte) 0xff }, 0);
assertThat(result).isEqualTo(0xffffff34);
assertThat(result).isEqualTo(-204);
}
@Test public void testGetUnsignedShort() {
int result = ZipUtil.getUnsignedShort(new byte[]{ 0x34, 0x12 }, 0);
assertThat(result).isEqualTo(0x1234);
assertThat(result).isEqualTo(4660);
}
@Test public void testGetUnsignedShort_Big() {
int result = ZipUtil.getUnsignedShort(new byte[]{ 0x34, (byte) 0xff }, 0);
assertThat(result).isEqualTo(0xff34);
assertThat(result).isEqualTo(65332);
}
@Test public void testGetUnsignedInt() {
long result = ZipUtil.getUnsignedInt(new byte[]{ 0x34, 0x12, 0x0, 0x0 }, 0);
assertThat(result).isEqualTo(0x1234);
assertThat(result).isEqualTo(4660);
}
@Test public void testGetUnsignedShort_FFFF() {
int result = ZipUtil.getUnsignedShort(new byte[]{ (byte) 0xff, (byte) 0xff }, 0);
assertThat((short) result).isEqualTo((short) -1);
}
@Test public void testGetUnsignedInt_Big() {
long result = ZipUtil.getUnsignedInt(
new byte[]{ 0x34, (byte) 0xff, (byte) 0xff, (byte) 0xff }, 0);
assertThat(result).isEqualTo(0xffffff34L);
assertThat(result).isEqualTo(4294967092L);
}
@Test public void testTimeConversion_DosToUnix() {
int dos = (20 << 25) | (2 << 21) | (14 << 16) | (3 << 11) | (7 << 5) | (15 >> 1);
Calendar time = new GregorianCalendar(2000, Calendar.FEBRUARY, 14, 3, 7, 14);
long expectedUnixTime = time.getTimeInMillis();
assertThat(ZipUtil.dosToUnixTime(dos)).isEqualTo(expectedUnixTime);
}
@Test public void testTimeConversion_UnixToDos() {
Calendar time = new GregorianCalendar(2000, Calendar.FEBRUARY, 14, 3, 7, 14);
long unix = time.getTimeInMillis();
int expectedDosTime = (20 << 25) | (2 << 21) | (14 << 16) | (3 << 11) | (7 << 5) | (15 >> 1);
assertThat(ZipUtil.unixToDosTime(unix)).isEqualTo(expectedDosTime);
}
@Test public void testTimeConversion_UnixToDos_LowBound() {
Calendar time = Calendar.getInstance();
time.setTimeInMillis(ZipUtil.DOS_EPOCH);
time.add(Calendar.SECOND, -1);
thrown.expect(IllegalArgumentException.class);
ZipUtil.unixToDosTime(time.getTimeInMillis());
}
@Test public void testTimeConversion_UnixToDos_HighBound_Rounding() {
Calendar time = Calendar.getInstance();
time.setTimeInMillis(ZipUtil.MAX_DOS_DATE);
ZipUtil.unixToDosTime(time.getTimeInMillis());
}
@Test public void testTimeConversion_UnixToDos_HighBound() {
Calendar time = Calendar.getInstance();
time.setTimeInMillis(ZipUtil.MAX_DOS_DATE);
time.add(Calendar.SECOND, 1);
thrown.expect(IllegalArgumentException.class);
ZipUtil.unixToDosTime(time.getTimeInMillis());
}
@Test public void testTimeConversion_UnixToUnix() {
Calendar from = new GregorianCalendar(2000, Calendar.FEBRUARY, 14, 3, 7, 15);
Calendar to = new GregorianCalendar(2000, Calendar.FEBRUARY, 14, 3, 7, 14);
assertThat(ZipUtil.dosToUnixTime(ZipUtil.unixToDosTime(from.getTimeInMillis())))
.isEqualTo(to.getTimeInMillis());
}
@Test public void testTimeConversion_DosToDos() {
int dos = (20 << 25) | (2 << 21) | (14 << 16) | (3 << 11) | (7 << 5) | (15 >> 1);
assertThat(ZipUtil.unixToDosTime(ZipUtil.dosToUnixTime(dos))).isEqualTo(dos);
}
@Test public void testTimeConversion_DosToDos_Zero() {
int dos = 0;
thrown.expect(IllegalArgumentException.class);
assertThat(ZipUtil.unixToDosTime(ZipUtil.dosToUnixTime(dos))).isEqualTo(0);
}
}
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