/*
* 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.testutil.integration;
import static org.hamcrest.Matchers.hasItem;
import static org.hamcrest.Matchers.is;
import static org.hamcrest.Matchers.not;
import static org.junit.Assert.assertThat;
import com.facebook.buck.io.MorePaths;
import com.google.common.base.Charsets;
import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableSet;
import com.google.common.io.ByteStreams;
import java.io.IOException;
import java.nio.file.Path;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import org.hamcrest.Matchers;
public class ZipInspector {
private final Path zipFile;
private final ImmutableSet<String> zipFileEntries;
public ZipInspector(Path zip) throws IOException {
this.zipFile = Preconditions.checkNotNull(zip);
final ImmutableSet.Builder<String> builder = ImmutableSet.builder();
try (ZipFile zipFile = new ZipFile(zip.toFile())) {
Enumeration<? extends ZipEntry> entries = zipFile.entries();
while (entries.hasMoreElements()) {
builder.add(entries.nextElement().getName());
}
}
this.zipFileEntries = builder.build();
}
public void assertFileExists(String pathRelativeToRoot) {
assertThat(zipFileEntries, hasItem(pathRelativeToRoot));
}
public void assertFileDoesNotExist(String pathRelativeToRoot) {
assertThat(zipFileEntries, not(hasItem((pathRelativeToRoot))));
}
public void assertFilesDoNotExist(String... pathsRelativeToRoot) {
for (String path : pathsRelativeToRoot) {
assertFileDoesNotExist(path);
}
}
public void assertFileContents(String pathRelativeToRoot, String expected) throws IOException {
assertThat(
new String(getFileContents(pathRelativeToRoot), Charsets.UTF_8),
Matchers.equalTo(expected));
}
public void assertFileContents(Path pathRelativeToRoot, String expected) throws IOException {
assertFileContents(MorePaths.pathWithUnixSeparators(pathRelativeToRoot), expected);
}
public byte[] getFileContents(String pathRelativeToRoot) throws IOException {
try (ZipFile zipFile = new ZipFile(this.zipFile.toFile())) {
ZipEntry entry = zipFile.getEntry(pathRelativeToRoot);
return ByteStreams.toByteArray(zipFile.getInputStream(entry));
}
}
public ImmutableSet<String> getZipFileEntries() {
return zipFileEntries;
}
public long getCrc(String pathRelativeToRoot) throws IOException {
try (ZipFile zipFile = new ZipFile(this.zipFile.toFile())) {
ZipEntry entry = zipFile.getEntry(pathRelativeToRoot);
long crc = entry.getCrc();
Preconditions.checkState(crc != -1, "Error accessing crc for entry: %s", pathRelativeToRoot);
return crc;
}
}
public long getSize(String pathRelativeToRoot) throws IOException {
try (ZipFile zipFile = new ZipFile(this.zipFile.toFile())) {
ZipEntry entry = zipFile.getEntry(pathRelativeToRoot);
long size = entry.getSize();
Preconditions.checkState(
size != -1, "Error accessing size for entry: %s", pathRelativeToRoot);
return size;
}
}
public void assertFileIsCompressed(String pathRelativeToRoot) throws IOException {
try (ZipFile zipFile = new ZipFile(this.zipFile.toFile())) {
ZipEntry entry = zipFile.getEntry(pathRelativeToRoot);
assertThat(entry.getMethod(), is(not(ZipEntry.STORED)));
assertThat(entry.getCompressedSize(), Matchers.lessThan(entry.getSize()));
}
}
public void assertFileIsNotCompressed(String pathRelativeToRoot) throws IOException {
try (ZipFile zipFile = new ZipFile(this.zipFile.toFile())) {
ZipEntry entry = zipFile.getEntry(pathRelativeToRoot);
assertThat(entry.getMethod(), is(ZipEntry.STORED));
assertThat(entry.getCompressedSize(), Matchers.equalTo(entry.getSize()));
}
}
}