| /* |
| * Copyright (C) 2020 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.libcore.timezone.tzlookup; |
| |
| import static junit.framework.TestCase.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| import com.android.libcore.timezone.testing.TestUtils; |
| |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| import java.io.IOException; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.text.ParseException; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| public class BackwardFileTest { |
| |
| private Path tempDir; |
| |
| @Before |
| public void setUp() throws Exception { |
| tempDir = Files.createTempDirectory("BackwardFileTest"); |
| } |
| |
| @After |
| public void tearDown() throws Exception { |
| TestUtils.deleteDir(tempDir); |
| } |
| |
| @Test |
| public void parseEmpty() throws Exception { |
| String file = createFile(""); |
| BackwardFile backward = BackwardFile.parse(file); |
| assertTrue(backward.getDirectLinks().isEmpty()); |
| } |
| |
| @Test |
| public void parseIgnoresCommentsAndEmptyLines() throws Exception { |
| String file = createFile( |
| "# This is a comment", |
| "", |
| "# And another", |
| "Link\tAmerica/Nuuk\t\tAmerica/Godthab" |
| ); |
| BackwardFile backward = BackwardFile.parse(file); |
| |
| Map<String, String> expectedLinks = new HashMap<>(); |
| expectedLinks.put("America/Godthab", "America/Nuuk"); |
| assertEquals(expectedLinks, backward.getDirectLinks()); |
| } |
| |
| @Test |
| public void parse() throws Exception { |
| String file = createFile( |
| "# This is a comment", |
| "Link\tAmerica/Nuuk\t\tAmerica/Godthab", |
| "# This is a comment", |
| "Link\tAfrica/Nairobi\t\tAfrica/Asmera", |
| "# This is a comment", |
| "Link\tAfrica/Abidjan\t\tAfrica/Timbuktu", |
| "# This is a comment" |
| ); |
| BackwardFile backward = BackwardFile.parse(file); |
| Map<String, String> expectedLinks = new HashMap<>(); |
| expectedLinks.put("America/Godthab", "America/Nuuk"); |
| expectedLinks.put("Africa/Asmera", "Africa/Nairobi"); |
| expectedLinks.put("Africa/Timbuktu", "Africa/Abidjan"); |
| |
| assertEquals(expectedLinks, backward.getDirectLinks()); |
| } |
| |
| @Test(expected = IllegalStateException.class) |
| public void getLinksWithLoop() throws Exception { |
| String file = createFile( |
| "Link\tAmerica/New_York\t\tAmerica/Los_Angeles", |
| "Link\tAmerica/Los_Angeles\t\tAmerica/Phoenix", |
| "Link\tAmerica/Phoenix\t\tAmerica/New_York" |
| ); |
| BackwardFile backward = BackwardFile.parse(file); |
| backward.getDirectLinks(); |
| } |
| |
| @Test(expected = IllegalStateException.class) |
| public void parseWithDupes() throws Exception { |
| String file = createFile( |
| "Link\tAmerica/New_York\t\tAmerica/Los_Angeles", |
| "Link\tAmerica/Phoenix\t\tAmerica/Los_Angeles" |
| ); |
| BackwardFile.parse(file); |
| } |
| |
| @Test(expected = ParseException.class) |
| public void parseMalformedFile() throws Exception { |
| // Mapping lines are expected to have at least three tab-separated columns. |
| String file = createFile("NotLink\tBooHoo"); |
| BackwardFile.parse(file); |
| } |
| |
| private String createFile(String... lines) throws IOException { |
| return TestUtils.createFile(tempDir, lines); |
| } |
| } |