sdks/java/core/src/test/java/org/apache/beam/sdk/io/LocalFileSystemTest.java - beam - Git at Google

 /*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
  * regarding copyright ownership.  The ASF licenses this file
  * to you 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 org.apache.beam.sdk.io;

 import static org.hamcrest.Matchers.containsInAnyOrder;
 import static org.hamcrest.Matchers.equalTo;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertNotEquals;
 import static org.junit.Assert.assertThat;
 import static org.junit.Assert.assertTrue;

 import java.io.File;
 import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.Reader;
 import java.io.Writer;
 import java.nio.channels.Channels;
 import java.nio.charset.StandardCharsets;
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.util.List;
 import org.apache.beam.sdk.io.fs.CreateOptions.StandardCreateOptions;
 import org.apache.beam.sdk.io.fs.MatchResult;
 import org.apache.beam.sdk.io.fs.ResolveOptions.StandardResolveOptions;
 import org.apache.beam.sdk.testing.RestoreSystemProperties;
 import org.apache.beam.sdk.util.MimeTypes;
 import org.apache.beam.vendor.guava.v20_0.com.google.common.collect.FluentIterable;
 import org.apache.beam.vendor.guava.v20_0.com.google.common.collect.ImmutableList;
 import org.apache.beam.vendor.guava.v20_0.com.google.common.collect.Lists;
 import org.apache.beam.vendor.guava.v20_0.com.google.common.io.Files;
 import org.apache.beam.vendor.guava.v20_0.com.google.common.io.LineReader;
 import org.apache.commons.lang3.SystemUtils;
 import org.hamcrest.Matchers;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.rules.ExpectedException;
 import org.junit.rules.TemporaryFolder;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;

 /** Tests for {@link LocalFileSystem}. */
 @RunWith(JUnit4.class)
 public class LocalFileSystemTest {
   @Rule public ExpectedException thrown = ExpectedException.none();
   @Rule public TemporaryFolder temporaryFolder = new TemporaryFolder();
   @Rule public RestoreSystemProperties restoreSystemProperties = new RestoreSystemProperties();
   private LocalFileSystem localFileSystem = new LocalFileSystem();

   @Test
   public void testCreateWithExistingFile() throws Exception {
     File existingFile = temporaryFolder.newFile();
     testCreate(existingFile.toPath());
   }

   @Test
   public void testCreateWithinExistingDirectory() throws Exception {
     testCreate(temporaryFolder.getRoot().toPath().resolve("file.txt"));
   }

   @Test
   public void testCreateWithNonExistentSubDirectory() throws Exception {
     testCreate(temporaryFolder.getRoot().toPath().resolve("non-existent-dir").resolve("file.txt"));
   }

   private void testCreate(Path path) throws Exception {
     String expected = "my test string";
     // First with the path string
     createFileWithContent(path, expected);
     assertThat(
         Files.readLines(path.toFile(), StandardCharsets.UTF_8), containsInAnyOrder(expected));

     // Delete the file before trying as URI
     assertTrue("Unable to delete file " + path, path.toFile().delete());

     // Second with the path URI
     createFileWithContent(Paths.get(path.toUri()), expected);
     assertThat(
         Files.readLines(path.toFile(), StandardCharsets.UTF_8), containsInAnyOrder(expected));
   }

   @Test
   public void testReadWithExistingFile() throws Exception {
     String expected = "my test string";
     File existingFile = temporaryFolder.newFile();
     Files.write(expected, existingFile, StandardCharsets.UTF_8);
     String data;
     try (Reader reader =
         Channels.newReader(
             localFileSystem.open(
                 LocalResourceId.fromPath(existingFile.toPath(), false /* isDirectory */)),
             StandardCharsets.UTF_8.name())) {
       data = new LineReader(reader).readLine();
     }
     assertEquals(expected, data);
   }

   @Test
   public void testReadNonExistentFile() throws Exception {
     thrown.expect(FileNotFoundException.class);
     localFileSystem
         .open(
             LocalResourceId.fromPath(
                 temporaryFolder.getRoot().toPath().resolve("non-existent-file.txt"),
                 false /* isDirectory */))
         .close();
   }

   private void assertContents(List<Path> destFiles, List<String> contents) throws Exception {
     for (int i = 0; i < destFiles.size(); ++i) {
       assertThat(
           Files.readLines(destFiles.get(i).toFile(), StandardCharsets.UTF_8),
           containsInAnyOrder(contents.get(i)));
     }
   }

   @Test
   public void testCopyWithExistingSrcFile() throws Exception {
     Path srcPath1 = temporaryFolder.newFile().toPath();
     Path srcPath2 = temporaryFolder.newFile().toPath();

     Path destPath1 = temporaryFolder.getRoot().toPath().resolve("nonexistentdir").resolve("dest1");
     Path destPath2 = srcPath2.resolveSibling("dest2");

     createFileWithContent(srcPath1, "content1");
     createFileWithContent(srcPath2, "content2");

     localFileSystem.copy(
         toLocalResourceIds(ImmutableList.of(srcPath1, srcPath2), false /* isDirectory */),
         toLocalResourceIds(ImmutableList.of(destPath1, destPath2), false /* isDirectory */));

     assertContents(
         ImmutableList.of(destPath1, destPath2), ImmutableList.of("content1", "content2"));
   }

   @Test
   public void testMoveWithExistingSrcFile() throws Exception {
     Path srcPath1 = temporaryFolder.newFile().toPath();
     Path srcPath2 = temporaryFolder.newFile().toPath();

     Path destPath1 = temporaryFolder.getRoot().toPath().resolve("nonexistentdir").resolve("dest1");
     Path destPath2 = srcPath2.resolveSibling("dest2");

     createFileWithContent(srcPath1, "content1");
     createFileWithContent(srcPath2, "content2");

     localFileSystem.rename(
         toLocalResourceIds(ImmutableList.of(srcPath1, srcPath2), false /* isDirectory */),
         toLocalResourceIds(ImmutableList.of(destPath1, destPath2), false /* isDirectory */));

     assertContents(
         ImmutableList.of(destPath1, destPath2), ImmutableList.of("content1", "content2"));

     assertFalse(srcPath1 + "exists", srcPath1.toFile().exists());
     assertFalse(srcPath2 + "exists", srcPath2.toFile().exists());
   }

   @Test
   public void testDelete() throws Exception {
     File f1 = temporaryFolder.newFile("file1");
     File f2 = temporaryFolder.newFile("file2");
     File f3 = temporaryFolder.newFile("other-file");
     localFileSystem.delete(
         toLocalResourceIds(Lists.newArrayList(f1.toPath(), f2.toPath()), false /* isDirectory */));
     assertFalse(f1.exists());
     assertFalse(f2.exists());
     assertTrue(f3.exists());
   }

   @Test
   public void testMatchExact() throws Exception {
     List<String> expected = ImmutableList.of(temporaryFolder.newFile("a").toString());
     temporaryFolder.newFile("aa");
     temporaryFolder.newFile("ab");

     List<MatchResult> matchResults =
         localFileSystem.match(
             ImmutableList.of(temporaryFolder.getRoot().toPath().resolve("a").toString()));
     assertThat(
         toFilenames(matchResults),
         containsInAnyOrder(expected.toArray(new String[expected.size()])));
   }

   @Test
   public void testMatchPatternNone() throws Exception {
     temporaryFolder.newFile("a");
     temporaryFolder.newFile("aa");
     temporaryFolder.newFile("ab");

     List<MatchResult> matchResults =
         matchGlobWithPathPrefix(temporaryFolder.getRoot().toPath().resolve("b"), "*");
     assertEquals(1, matchResults.size());
     assertEquals(MatchResult.Status.NOT_FOUND, matchResults.get(0).status());
   }

   @Test
   public void testMatchForNonExistentFile() throws Exception {
     temporaryFolder.newFile("aa");

     List<MatchResult> matchResults =
         localFileSystem.match(
             ImmutableList.of(temporaryFolder.getRoot().toPath().resolve("a").toString()));
     assertEquals(1, matchResults.size());
     assertEquals(MatchResult.Status.NOT_FOUND, matchResults.get(0).status());
   }

   @Test
   public void testMatchMultipleWithFileExtension() throws Exception {
     List<String> expected =
         ImmutableList.of(
             temporaryFolder.newFile("a.txt").toString(),
             temporaryFolder.newFile("aa.txt").toString(),
             temporaryFolder.newFile("ab.txt").toString());
     temporaryFolder.newFile("a.avro");
     temporaryFolder.newFile("ab.avro");

     List<MatchResult> matchResults =
         matchGlobWithPathPrefix(temporaryFolder.getRoot().toPath().resolve("a"), "*.txt");
     assertThat(
         toFilenames(matchResults),
         containsInAnyOrder(expected.toArray(new String[expected.size()])));
   }

   @Test
   public void testMatchInDirectory() throws Exception {
     List<String> expected = ImmutableList.of(temporaryFolder.newFile("a").toString());
     temporaryFolder.newFile("aa");
     temporaryFolder.newFile("ab");

     String expectedFile = expected.get(0);
     int slashIndex = expectedFile.lastIndexOf('/');
     if (SystemUtils.IS_OS_WINDOWS) {
       slashIndex = expectedFile.lastIndexOf('\\');
     }
     String directory = expectedFile.substring(0, slashIndex);
     String relative = expectedFile.substring(slashIndex + 1);
     System.setProperty("user.dir", directory);
     List<MatchResult> results = localFileSystem.match(ImmutableList.of(relative));
     assertThat(
         toFilenames(results), containsInAnyOrder(expected.toArray(new String[expected.size()])));
   }

   @Test
   public void testMatchWithFileSlashPrefix() throws Exception {
     List<String> expected = ImmutableList.of(temporaryFolder.newFile("a").toString());
     temporaryFolder.newFile("aa");
     temporaryFolder.newFile("ab");

     String file = "file:/" + temporaryFolder.getRoot().toPath().resolve("a").toString();
     List<MatchResult> results = localFileSystem.match(ImmutableList.of(file));
     assertThat(
         toFilenames(results), containsInAnyOrder(expected.toArray(new String[expected.size()])));
   }

   @Test
   public void testMatchWithFileThreeSlashesPrefix() throws Exception {
     List<String> expected = ImmutableList.of(temporaryFolder.newFile("a").toString());
     temporaryFolder.newFile("aa");
     temporaryFolder.newFile("ab");

     String file = "file:///" + temporaryFolder.getRoot().toPath().resolve("a").toString();
     List<MatchResult> results = localFileSystem.match(ImmutableList.of(file));
     assertThat(
         toFilenames(results), containsInAnyOrder(expected.toArray(new String[expected.size()])));
   }

   @Test
   public void testMatchMultipleWithoutSubdirectoryExpansion() throws Exception {
     File unmatchedSubDir = temporaryFolder.newFolder("aaa");
     File unmatchedSubDirFile = File.createTempFile("sub-dir-file", "", unmatchedSubDir);
     unmatchedSubDirFile.deleteOnExit();
     List<String> expected =
         ImmutableList.of(
             temporaryFolder.newFile("a").toString(),
             temporaryFolder.newFile("aa").toString(),
             temporaryFolder.newFile("ab").toString());
     temporaryFolder.newFile("ba");
     temporaryFolder.newFile("bb");

     List<MatchResult> matchResults =
         matchGlobWithPathPrefix(temporaryFolder.getRoot().toPath().resolve("a"), "*");
     assertThat(
         toFilenames(matchResults),
         containsInAnyOrder(expected.toArray(new String[expected.size()])));
   }

   @Test
   public void testMatchMultipleWithSubdirectoryExpansion() throws Exception {
     File matchedSubDir = temporaryFolder.newFolder("a");
     File matchedSubDirFile = File.createTempFile("sub-dir-file", "", matchedSubDir);
     matchedSubDirFile.deleteOnExit();
     File unmatchedSubDir = temporaryFolder.newFolder("b");
     File unmatchedSubDirFile = File.createTempFile("sub-dir-file", "", unmatchedSubDir);
     unmatchedSubDirFile.deleteOnExit();

     List<String> expected =
         ImmutableList.of(
             matchedSubDirFile.toString(),
             temporaryFolder.newFile("aa").toString(),
             temporaryFolder.newFile("ab").toString());
     temporaryFolder.newFile("ba");
     temporaryFolder.newFile("bb");

     List<MatchResult> matchResults =
         matchGlobWithPathPrefix(temporaryFolder.getRoot().toPath().resolve("a"), "**");
     assertThat(
         toFilenames(matchResults),
         Matchers.hasItems(expected.toArray(new String[expected.size()])));
   }

   @Test
   public void testMatchWithDirectoryFiltersOutDirectory() throws Exception {
     List<String> expected = ImmutableList.of(temporaryFolder.newFile("a").toString());
     temporaryFolder.newFolder("a_dir_that_should_not_be_matched");

     List<MatchResult> matchResults =
         matchGlobWithPathPrefix(temporaryFolder.getRoot().toPath().resolve("a"), "*");
     assertThat(
         toFilenames(matchResults),
         containsInAnyOrder(expected.toArray(new String[expected.size()])));
   }

   @Test
   public void testMatchWithoutParentDirectory() throws Exception {
     Path pattern =
         LocalResourceId.fromPath(temporaryFolder.getRoot().toPath(), true /* isDirectory */)
             .resolve("non_existing_dir", StandardResolveOptions.RESOLVE_DIRECTORY)
             .resolve("*", StandardResolveOptions.RESOLVE_FILE)
             .getPath();
     assertTrue(toFilenames(localFileSystem.match(ImmutableList.of(pattern.toString()))).isEmpty());
   }

   @Test
   public void testMatchNewResource() throws Exception {
     LocalResourceId fileResource =
         localFileSystem.matchNewResource("/some/test/resource/path", false /* isDirectory */);
     LocalResourceId dirResource =
         localFileSystem.matchNewResource("/some/test/resource/path", true /* isDirectory */);
     assertNotEquals(fileResource, dirResource);
     assertThat(
         fileResource
             .getCurrentDirectory()
             .resolve("path", StandardResolveOptions.RESOLVE_DIRECTORY),
         equalTo(dirResource.getCurrentDirectory()));
     assertThat(
         fileResource
             .getCurrentDirectory()
             .resolve("path", StandardResolveOptions.RESOLVE_DIRECTORY),
         equalTo(dirResource.getCurrentDirectory()));
     assertThat(dirResource.toString(), equalTo("/some/test/resource/path/"));
   }

   private void createFileWithContent(Path path, String content) throws Exception {
     try (Writer writer =
         Channels.newWriter(
             localFileSystem.create(
                 LocalResourceId.fromPath(path, false /* isDirectory */),
                 StandardCreateOptions.builder().setMimeType(MimeTypes.TEXT).build()),
             StandardCharsets.UTF_8.name())) {
       writer.write(content);
     }
   }

   private List<MatchResult> matchGlobWithPathPrefix(Path pathPrefix, String glob)
       throws IOException {
     // Windows doesn't like resolving paths with * in glob, so the glob is concatenated as String.
     return localFileSystem.match(ImmutableList.of(pathPrefix + glob));
   }

   private List<LocalResourceId> toLocalResourceIds(List<Path> paths, final boolean isDirectory) {
     return FluentIterable.from(paths)
         .transform(path -> LocalResourceId.fromPath(path, isDirectory))
         .toList();
   }

   private List<String> toFilenames(List<MatchResult> matchResults) {
     return FluentIterable.from(matchResults)
         .transformAndConcat(
             matchResult -> {
               try {
                 return matchResult.metadata();
               } catch (IOException e) {
                 throw new RuntimeException(e);
               }
             })
         .transform(metadata -> ((LocalResourceId) metadata.resourceId()).getPath().toString())
         .toList();
   }
 }
	/*
	* Licensed to the Apache Software Foundation (ASF) under one
	* or more contributor license agreements. See the NOTICE file
	* distributed with this work for additional information
	* regarding copyright ownership. The ASF licenses this file
	* to you 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 org.apache.beam.sdk.io;

	import static org.hamcrest.Matchers.containsInAnyOrder;
	import static org.hamcrest.Matchers.equalTo;
	import static org.junit.Assert.assertEquals;
	import static org.junit.Assert.assertFalse;
	import static org.junit.Assert.assertNotEquals;
	import static org.junit.Assert.assertThat;
	import static org.junit.Assert.assertTrue;

	import java.io.File;
	import java.io.FileNotFoundException;
	import java.io.IOException;
	import java.io.Reader;
	import java.io.Writer;
	import java.nio.channels.Channels;
	import java.nio.charset.StandardCharsets;
	import java.nio.file.Path;
	import java.nio.file.Paths;
	import java.util.List;
	import org.apache.beam.sdk.io.fs.CreateOptions.StandardCreateOptions;
	import org.apache.beam.sdk.io.fs.MatchResult;
	import org.apache.beam.sdk.io.fs.ResolveOptions.StandardResolveOptions;
	import org.apache.beam.sdk.testing.RestoreSystemProperties;
	import org.apache.beam.sdk.util.MimeTypes;
	import org.apache.beam.vendor.guava.v20_0.com.google.common.collect.FluentIterable;
	import org.apache.beam.vendor.guava.v20_0.com.google.common.collect.ImmutableList;
	import org.apache.beam.vendor.guava.v20_0.com.google.common.collect.Lists;
	import org.apache.beam.vendor.guava.v20_0.com.google.common.io.Files;
	import org.apache.beam.vendor.guava.v20_0.com.google.common.io.LineReader;
	import org.apache.commons.lang3.SystemUtils;
	import org.hamcrest.Matchers;
	import org.junit.Rule;
	import org.junit.Test;
	import org.junit.rules.ExpectedException;
	import org.junit.rules.TemporaryFolder;
	import org.junit.runner.RunWith;
	import org.junit.runners.JUnit4;

	/** Tests for {@link LocalFileSystem}. */
	@RunWith(JUnit4.class)
	public class LocalFileSystemTest {
	@Rule public ExpectedException thrown = ExpectedException.none();
	@Rule public TemporaryFolder temporaryFolder = new TemporaryFolder();
	@Rule public RestoreSystemProperties restoreSystemProperties = new RestoreSystemProperties();
	private LocalFileSystem localFileSystem = new LocalFileSystem();

	@Test
	public void testCreateWithExistingFile() throws Exception {
	File existingFile = temporaryFolder.newFile();
	testCreate(existingFile.toPath());
	}

	@Test
	public void testCreateWithinExistingDirectory() throws Exception {
	testCreate(temporaryFolder.getRoot().toPath().resolve("file.txt"));
	}

	@Test
	public void testCreateWithNonExistentSubDirectory() throws Exception {
	testCreate(temporaryFolder.getRoot().toPath().resolve("non-existent-dir").resolve("file.txt"));
	}

	private void testCreate(Path path) throws Exception {
	String expected = "my test string";
	// First with the path string
	createFileWithContent(path, expected);
	assertThat(
	Files.readLines(path.toFile(), StandardCharsets.UTF_8), containsInAnyOrder(expected));

	// Delete the file before trying as URI
	assertTrue("Unable to delete file " + path, path.toFile().delete());

	// Second with the path URI
	createFileWithContent(Paths.get(path.toUri()), expected);
	assertThat(
	Files.readLines(path.toFile(), StandardCharsets.UTF_8), containsInAnyOrder(expected));
	}

	@Test
	public void testReadWithExistingFile() throws Exception {
	String expected = "my test string";
	File existingFile = temporaryFolder.newFile();
	Files.write(expected, existingFile, StandardCharsets.UTF_8);
	String data;
	try (Reader reader =
	Channels.newReader(
	localFileSystem.open(
	LocalResourceId.fromPath(existingFile.toPath(), false /* isDirectory */)),
	StandardCharsets.UTF_8.name())) {
	data = new LineReader(reader).readLine();
	}
	assertEquals(expected, data);
	}

	@Test
	public void testReadNonExistentFile() throws Exception {
	thrown.expect(FileNotFoundException.class);
	localFileSystem
	.open(
	LocalResourceId.fromPath(
	temporaryFolder.getRoot().toPath().resolve("non-existent-file.txt"),
	false /* isDirectory */))
	.close();
	}

	private void assertContents(List<Path> destFiles, List<String> contents) throws Exception {
	for (int i = 0; i < destFiles.size(); ++i) {
	assertThat(
	Files.readLines(destFiles.get(i).toFile(), StandardCharsets.UTF_8),
	containsInAnyOrder(contents.get(i)));
	}
	}

	@Test
	public void testCopyWithExistingSrcFile() throws Exception {
	Path srcPath1 = temporaryFolder.newFile().toPath();
	Path srcPath2 = temporaryFolder.newFile().toPath();

	Path destPath1 = temporaryFolder.getRoot().toPath().resolve("nonexistentdir").resolve("dest1");
	Path destPath2 = srcPath2.resolveSibling("dest2");

	createFileWithContent(srcPath1, "content1");
	createFileWithContent(srcPath2, "content2");

	localFileSystem.copy(
	toLocalResourceIds(ImmutableList.of(srcPath1, srcPath2), false /* isDirectory */),
	toLocalResourceIds(ImmutableList.of(destPath1, destPath2), false /* isDirectory */));

	assertContents(
	ImmutableList.of(destPath1, destPath2), ImmutableList.of("content1", "content2"));
	}

	@Test
	public void testMoveWithExistingSrcFile() throws Exception {
	Path srcPath1 = temporaryFolder.newFile().toPath();
	Path srcPath2 = temporaryFolder.newFile().toPath();

	Path destPath1 = temporaryFolder.getRoot().toPath().resolve("nonexistentdir").resolve("dest1");
	Path destPath2 = srcPath2.resolveSibling("dest2");

	createFileWithContent(srcPath1, "content1");
	createFileWithContent(srcPath2, "content2");

	localFileSystem.rename(
	toLocalResourceIds(ImmutableList.of(srcPath1, srcPath2), false /* isDirectory */),
	toLocalResourceIds(ImmutableList.of(destPath1, destPath2), false /* isDirectory */));

	assertContents(
	ImmutableList.of(destPath1, destPath2), ImmutableList.of("content1", "content2"));

	assertFalse(srcPath1 + "exists", srcPath1.toFile().exists());
	assertFalse(srcPath2 + "exists", srcPath2.toFile().exists());
	}

	@Test
	public void testDelete() throws Exception {
	File f1 = temporaryFolder.newFile("file1");
	File f2 = temporaryFolder.newFile("file2");
	File f3 = temporaryFolder.newFile("other-file");
	localFileSystem.delete(
	toLocalResourceIds(Lists.newArrayList(f1.toPath(), f2.toPath()), false /* isDirectory */));
	assertFalse(f1.exists());
	assertFalse(f2.exists());
	assertTrue(f3.exists());
	}

	@Test
	public void testMatchExact() throws Exception {
	List<String> expected = ImmutableList.of(temporaryFolder.newFile("a").toString());
	temporaryFolder.newFile("aa");
	temporaryFolder.newFile("ab");

	List<MatchResult> matchResults =
	localFileSystem.match(
	ImmutableList.of(temporaryFolder.getRoot().toPath().resolve("a").toString()));
	assertThat(
	toFilenames(matchResults),
	containsInAnyOrder(expected.toArray(new String[expected.size()])));
	}

	@Test
	public void testMatchPatternNone() throws Exception {
	temporaryFolder.newFile("a");
	temporaryFolder.newFile("aa");
	temporaryFolder.newFile("ab");

	List<MatchResult> matchResults =
	matchGlobWithPathPrefix(temporaryFolder.getRoot().toPath().resolve("b"), "*");
	assertEquals(1, matchResults.size());
	assertEquals(MatchResult.Status.NOT_FOUND, matchResults.get(0).status());
	}

	@Test
	public void testMatchForNonExistentFile() throws Exception {
	temporaryFolder.newFile("aa");

	List<MatchResult> matchResults =
	localFileSystem.match(
	ImmutableList.of(temporaryFolder.getRoot().toPath().resolve("a").toString()));
	assertEquals(1, matchResults.size());
	assertEquals(MatchResult.Status.NOT_FOUND, matchResults.get(0).status());
	}

	@Test
	public void testMatchMultipleWithFileExtension() throws Exception {
	List<String> expected =
	ImmutableList.of(
	temporaryFolder.newFile("a.txt").toString(),
	temporaryFolder.newFile("aa.txt").toString(),
	temporaryFolder.newFile("ab.txt").toString());
	temporaryFolder.newFile("a.avro");
	temporaryFolder.newFile("ab.avro");

	List<MatchResult> matchResults =
	matchGlobWithPathPrefix(temporaryFolder.getRoot().toPath().resolve("a"), "*.txt");
	assertThat(
	toFilenames(matchResults),
	containsInAnyOrder(expected.toArray(new String[expected.size()])));
	}

	@Test
	public void testMatchInDirectory() throws Exception {
	List<String> expected = ImmutableList.of(temporaryFolder.newFile("a").toString());
	temporaryFolder.newFile("aa");
	temporaryFolder.newFile("ab");

	String expectedFile = expected.get(0);
	int slashIndex = expectedFile.lastIndexOf('/');
	if (SystemUtils.IS_OS_WINDOWS) {
	slashIndex = expectedFile.lastIndexOf('\\');
	}
	String directory = expectedFile.substring(0, slashIndex);
	String relative = expectedFile.substring(slashIndex + 1);
	System.setProperty("user.dir", directory);
	List<MatchResult> results = localFileSystem.match(ImmutableList.of(relative));
	assertThat(
	toFilenames(results), containsInAnyOrder(expected.toArray(new String[expected.size()])));
	}

	@Test
	public void testMatchWithFileSlashPrefix() throws Exception {
	List<String> expected = ImmutableList.of(temporaryFolder.newFile("a").toString());
	temporaryFolder.newFile("aa");
	temporaryFolder.newFile("ab");

	String file = "file:/" + temporaryFolder.getRoot().toPath().resolve("a").toString();
	List<MatchResult> results = localFileSystem.match(ImmutableList.of(file));
	assertThat(
	toFilenames(results), containsInAnyOrder(expected.toArray(new String[expected.size()])));
	}

	@Test
	public void testMatchWithFileThreeSlashesPrefix() throws Exception {
	List<String> expected = ImmutableList.of(temporaryFolder.newFile("a").toString());
	temporaryFolder.newFile("aa");
	temporaryFolder.newFile("ab");

	String file = "file:///" + temporaryFolder.getRoot().toPath().resolve("a").toString();
	List<MatchResult> results = localFileSystem.match(ImmutableList.of(file));
	assertThat(
	toFilenames(results), containsInAnyOrder(expected.toArray(new String[expected.size()])));
	}

	@Test
	public void testMatchMultipleWithoutSubdirectoryExpansion() throws Exception {
	File unmatchedSubDir = temporaryFolder.newFolder("aaa");
	File unmatchedSubDirFile = File.createTempFile("sub-dir-file", "", unmatchedSubDir);
	unmatchedSubDirFile.deleteOnExit();
	List<String> expected =
	ImmutableList.of(
	temporaryFolder.newFile("a").toString(),
	temporaryFolder.newFile("aa").toString(),
	temporaryFolder.newFile("ab").toString());
	temporaryFolder.newFile("ba");
	temporaryFolder.newFile("bb");

	List<MatchResult> matchResults =
	matchGlobWithPathPrefix(temporaryFolder.getRoot().toPath().resolve("a"), "*");
	assertThat(
	toFilenames(matchResults),
	containsInAnyOrder(expected.toArray(new String[expected.size()])));
	}

	@Test
	public void testMatchMultipleWithSubdirectoryExpansion() throws Exception {
	File matchedSubDir = temporaryFolder.newFolder("a");
	File matchedSubDirFile = File.createTempFile("sub-dir-file", "", matchedSubDir);
	matchedSubDirFile.deleteOnExit();
	File unmatchedSubDir = temporaryFolder.newFolder("b");
	File unmatchedSubDirFile = File.createTempFile("sub-dir-file", "", unmatchedSubDir);
	unmatchedSubDirFile.deleteOnExit();

	List<String> expected =
	ImmutableList.of(
	matchedSubDirFile.toString(),
	temporaryFolder.newFile("aa").toString(),
	temporaryFolder.newFile("ab").toString());
	temporaryFolder.newFile("ba");
	temporaryFolder.newFile("bb");

	List<MatchResult> matchResults =
	matchGlobWithPathPrefix(temporaryFolder.getRoot().toPath().resolve("a"), "**");
	assertThat(
	toFilenames(matchResults),
	Matchers.hasItems(expected.toArray(new String[expected.size()])));
	}

	@Test
	public void testMatchWithDirectoryFiltersOutDirectory() throws Exception {
	List<String> expected = ImmutableList.of(temporaryFolder.newFile("a").toString());
	temporaryFolder.newFolder("a_dir_that_should_not_be_matched");

	List<MatchResult> matchResults =
	matchGlobWithPathPrefix(temporaryFolder.getRoot().toPath().resolve("a"), "*");
	assertThat(
	toFilenames(matchResults),
	containsInAnyOrder(expected.toArray(new String[expected.size()])));
	}

	@Test
	public void testMatchWithoutParentDirectory() throws Exception {
	Path pattern =
	LocalResourceId.fromPath(temporaryFolder.getRoot().toPath(), true /* isDirectory */)
	.resolve("non_existing_dir", StandardResolveOptions.RESOLVE_DIRECTORY)
	.resolve("*", StandardResolveOptions.RESOLVE_FILE)
	.getPath();
	assertTrue(toFilenames(localFileSystem.match(ImmutableList.of(pattern.toString()))).isEmpty());
	}

	@Test
	public void testMatchNewResource() throws Exception {
	LocalResourceId fileResource =
	localFileSystem.matchNewResource("/some/test/resource/path", false /* isDirectory */);
	LocalResourceId dirResource =
	localFileSystem.matchNewResource("/some/test/resource/path", true /* isDirectory */);
	assertNotEquals(fileResource, dirResource);
	assertThat(
	fileResource
	.getCurrentDirectory()
	.resolve("path", StandardResolveOptions.RESOLVE_DIRECTORY),
	equalTo(dirResource.getCurrentDirectory()));
	assertThat(
	fileResource
	.getCurrentDirectory()
	.resolve("path", StandardResolveOptions.RESOLVE_DIRECTORY),
	equalTo(dirResource.getCurrentDirectory()));
	assertThat(dirResource.toString(), equalTo("/some/test/resource/path/"));
	}

	private void createFileWithContent(Path path, String content) throws Exception {
	try (Writer writer =
	Channels.newWriter(
	localFileSystem.create(
	LocalResourceId.fromPath(path, false /* isDirectory */),
	StandardCreateOptions.builder().setMimeType(MimeTypes.TEXT).build()),
	StandardCharsets.UTF_8.name())) {
	writer.write(content);
	}
	}

	private List<MatchResult> matchGlobWithPathPrefix(Path pathPrefix, String glob)
	throws IOException {
	// Windows doesn't like resolving paths with * in glob, so the glob is concatenated as String.
	return localFileSystem.match(ImmutableList.of(pathPrefix + glob));
	}

	private List<LocalResourceId> toLocalResourceIds(List<Path> paths, final boolean isDirectory) {
	return FluentIterable.from(paths)
	.transform(path -> LocalResourceId.fromPath(path, isDirectory))
	.toList();
	}

	private List<String> toFilenames(List<MatchResult> matchResults) {
	return FluentIterable.from(matchResults)
	.transformAndConcat(
	matchResult -> {
	try {
	return matchResult.metadata();
	} catch (IOException e) {
	throw new RuntimeException(e);
	}
	})
	.transform(metadata -> ((LocalResourceId) metadata.resourceId()).getPath().toString())
	.toList();
	}
	}