/*
* Copyright 2016-present Facebook, Inc.
*
* 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.facebook.buck.macho;
import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.Matchers.equalToObject;
import static org.junit.Assert.assertThat;
import com.facebook.buck.charset.NulTerminatedCharsetDecoder;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.charset.StandardCharsets;
import org.junit.Test;
public class SectionTest {
private static ByteBuffer createBuffer(byte[] bytes, int offset, ByteOrder order) {
ByteBuffer buffer = ByteBuffer.allocate(offset + bytes.length);
buffer.order(order);
buffer.position(offset);
buffer.put(bytes);
buffer.position(offset);
return buffer;
}
@Test
public void testCreatingFromBytesBigEndian64Bit() throws Exception {
Section section =
SectionUtils.createFromBuffer(
createBuffer(SectionTestData.getBigEndian64Bit(), 10, ByteOrder.BIG_ENDIAN),
true,
new NulTerminatedCharsetDecoder(StandardCharsets.UTF_8.newDecoder()));
assertThat(section.getOffsetInBinary(), equalTo(10));
checkValues(section);
}
@Test
public void testCreatingFromBytesLittleEndian64Bit() throws Exception {
Section section =
SectionUtils.createFromBuffer(
createBuffer(SectionTestData.getLittleEndian64Bit(), 20, ByteOrder.LITTLE_ENDIAN),
true,
new NulTerminatedCharsetDecoder(StandardCharsets.UTF_8.newDecoder()));
assertThat(section.getOffsetInBinary(), equalTo(20));
checkValues(section);
}
@Test
public void testCreatingFromBytesBigEndian32Bit() throws Exception {
Section section =
SectionUtils.createFromBuffer(
createBuffer(SectionTestData.getBigEndian32Bit(), 30, ByteOrder.BIG_ENDIAN),
false,
new NulTerminatedCharsetDecoder(StandardCharsets.UTF_8.newDecoder()));
assertThat(section.getOffsetInBinary(), equalTo(30));
checkValues(section);
}
@Test
public void testCreatingFromBytesLittleEndian32Bit() throws Exception {
Section section =
SectionUtils.createFromBuffer(
createBuffer(SectionTestData.getLittleEndian32Bit(), 40, ByteOrder.LITTLE_ENDIAN),
false,
new NulTerminatedCharsetDecoder(StandardCharsets.UTF_8.newDecoder()));
assertThat(section.getOffsetInBinary(), equalTo(40));
checkValues(section);
}
public static void checkValues(Section section) {
assertThat(section.getSectname(), equalToObject("SECTNAME"));
assertThat(section.getSegname(), equalToObject("SEGNAME"));
assertThat(section.getAddr().intValue(), equalTo(0x10));
assertThat(section.getSize().intValue(), equalTo(0x20));
assertThat(section.getOffset().intValue(), equalTo(0x30));
assertThat(section.getAlign().intValue(), equalTo(0x40));
assertThat(section.getReloff().intValue(), equalTo(0x50));
assertThat(section.getNreloc().intValue(), equalTo(0x60));
assertThat(section.getFlags().intValue(), equalTo(0x70));
assertThat(section.getReserved1().intValue(), equalTo(0x80));
assertThat(section.getReserved2().intValue(), equalTo(0x90));
}
}