| /* |
| * Copyright (C) 2019 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.server.backup.utils; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| |
| import android.platform.test.annotations.Presubmit; |
| |
| import androidx.test.filters.SmallTest; |
| import androidx.test.runner.AndroidJUnit4; |
| |
| import com.google.common.io.Files; |
| |
| import org.junit.AfterClass; |
| import org.junit.Before; |
| import org.junit.BeforeClass; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| import java.io.File; |
| import java.io.IOException; |
| |
| @SmallTest |
| @Presubmit |
| @RunWith(AndroidJUnit4.class) |
| public class FileUtilsTest { |
| private static File sTemporaryDir; |
| private File mTemporaryFile; |
| |
| @BeforeClass |
| public static void setUpClass() { |
| sTemporaryDir = Files.createTempDir(); |
| } |
| |
| @AfterClass |
| public static void tearDownClass() { |
| if (sTemporaryDir != null) { |
| sTemporaryDir.delete(); |
| } |
| } |
| |
| @Before |
| public void setUp() throws Exception { |
| mTemporaryFile = new File(sTemporaryDir, "fileutilstest.txt"); |
| } |
| |
| /** Test that if file does not exist, {@link FileUtils#createNewFile()} creates the file. */ |
| @Test |
| public void testEnsureFileExists_fileDoesNotAlreadyExist_getsCreated() { |
| assertThat(!mTemporaryFile.exists()); |
| |
| FileUtils.createNewFile(mTemporaryFile); |
| |
| assertThat(mTemporaryFile.exists()); |
| } |
| |
| /** Test that if file does exist, {@link FileUtils#createNewFile()} does not error out. */ |
| @Test |
| public void testEnsureFileExists_fileAlreadyExists_doesNotErrorOut() throws IOException { |
| mTemporaryFile.createNewFile(); |
| |
| FileUtils.createNewFile(mTemporaryFile); |
| |
| assertThat(mTemporaryFile.exists()); |
| } |
| } |