src/test/java/com/google/devtools/build/android/ziputils/SplitZipFiltersTest.java

// Copyright 2015 The Bazel Authors. 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.android.ziputils;

import static com.google.common.truth.Truth.assertThat;
import static java.nio.charset.StandardCharsets.UTF_8;

import com.google.common.base.Predicate;

import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TemporaryFolder;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

/**
 * Unit tests for {@link SplitZipFilters}.
 */
@RunWith(JUnit4.class)
public class SplitZipFiltersTest {
  @Rule public final TemporaryFolder tmp = new TemporaryFolder();

  @Test
  public void testEntriesIn() throws Exception {
    File filterZip = createZip("pkg1/test1.class", "pkg2/test2.class");
    Predicate<String> filter = SplitZipFilters.entriesIn(filterZip.getAbsolutePath());
    assertThat(filter.apply("pkg1/test1.class")).isTrue();
    assertThat(filter.apply("pkg2/test1.class")).isFalse();
    assertThat(filter.apply("pkg2/test2.class")).isTrue();
    assertThat(filter.apply("pkg1/test1$inner.class")).isFalse();
  }

  private File createZip(String... entries) throws FileNotFoundException, IOException {
    File zip = tmp.newFile();
    int count = 0;
    try (ZipOutputStream zout = new ZipOutputStream(new FileOutputStream(zip))) {
      for (String entry : entries) {
        zout.putNextEntry(new ZipEntry(entry));
        zout.write(("contents" + count++).getBytes(UTF_8)); // unique content
        zout.closeEntry();
      }
    }
    return zip;
  }
}