/*
* Copyright 2014-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.cxx.elf;
import static org.junit.Assert.assertThat;
import com.facebook.buck.testutil.integration.ProjectWorkspace;
import com.facebook.buck.testutil.integration.TemporaryPaths;
import com.facebook.buck.testutil.integration.TestDataHelper;
import java.io.IOException;
import java.nio.MappedByteBuffer;
import java.nio.channels.FileChannel;
import org.hamcrest.Matchers;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
public class ElfVerNeedTest {
@Rule public TemporaryPaths tmp = new TemporaryPaths();
private ProjectWorkspace workspace;
@Before
public void setUp() throws IOException {
workspace = TestDataHelper.createProjectWorkspaceForScenario(this, "samples", tmp);
workspace.setUp();
}
@Test
public void test() throws IOException {
try (FileChannel channel = FileChannel.open(workspace.resolve("libfoo.so"))) {
MappedByteBuffer buffer = channel.map(FileChannel.MapMode.READ_ONLY, 0, channel.size());
Elf elf = new Elf(buffer);
ElfSection stringTable = elf.getSectionByName(".dynstr").get().getSecond();
ElfVerNeed verNeed =
ElfVerNeed.parse(
elf.header.ei_class, elf.getSectionByName(".gnu.version_r").get().getSecond().body);
assertThat(verNeed.entries, Matchers.hasSize(1));
assertThat(
stringTable.lookupString(verNeed.entries.get(0).getFirst().vn_file),
Matchers.equalTo("libc.so.6"));
assertThat(verNeed.entries.get(0).getSecond(), Matchers.hasSize(1));
assertThat(
stringTable.lookupString(verNeed.entries.get(0).getSecond().get(0).vna_name),
Matchers.equalTo("GLIBC_2.2.5"));
}
}
}