| /* |
| * Copyright (C) 2014 The Android Open Source Project |
| * |
| * 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.android.build.gradle.integration.common.utils; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| import static org.junit.Assert.assertTrue; |
| |
| import com.android.annotations.NonNull; |
| import com.android.annotations.Nullable; |
| import com.google.common.base.Charsets; |
| import com.google.common.base.Predicate; |
| import com.google.common.collect.Lists; |
| import com.google.common.io.Files; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.Collections; |
| import java.util.List; |
| |
| /** |
| * Helper to help verify content of a file. |
| */ |
| public class FileHelper { |
| |
| /** |
| * Return a list of relative path of the files in a directory. |
| */ |
| public static List<String> listFiles(@NonNull File base) { |
| assertTrue(base.isDirectory()); |
| |
| List<String> fileList = Lists.newArrayList(); |
| for (File file : Files.fileTreeTraverser().preOrderTraversal(base).filter( |
| new Predicate<File>() { |
| @Override |
| public boolean apply(@Nullable File file) { |
| // we want to skip directories and symlinks, so isFile is the best check. |
| return file != null && file.isFile(); |
| } |
| })) { |
| assertThat(file.toString()).startsWith(base.toString()); |
| String fileName = file.toString().substring(base.toString().length()); |
| fileList.add(fileName); |
| |
| } |
| return fileList; |
| } |
| |
| public static void checkContent(File file, String expectedContent) throws IOException { |
| checkContent(file, Collections.singleton(expectedContent)); |
| } |
| |
| public static void checkContent(File file, Iterable<String> expectedContents) throws IOException { |
| assertTrue("File '" + file.getAbsolutePath() + "' does not exist.", file.isFile()); |
| |
| String contents = Files.toString(file, Charsets.UTF_8); |
| for (String expectedContent : expectedContents) { |
| assertTrue("File '" + file.getAbsolutePath() + "' does not contain: " + expectedContent, |
| contents.contains(expectedContent)); |
| } |
| } |
| |
| } |