com.google.cloud.hadoop.fs.gcs.hcfs.GoogleHadoopGlobalRootedFSMainOperations2Test.java Source code

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Here is the source code for com.google.cloud.hadoop.fs.gcs.hcfs.GoogleHadoopGlobalRootedFSMainOperations2Test.java

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/**
 * Copyright 2014 Google Inc. 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.cloud.hadoop.fs.gcs.hcfs;

import static org.apache.hadoop.fs.FileSystemTestHelper.exists;

import com.google.cloud.hadoop.fs.gcs.GoogleHadoopFileSystemTestHelper;
import java.io.IOException;
import org.apache.hadoop.fs.FSMainOperationsBaseTest;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.FileSystemTestHelper;
import org.apache.hadoop.fs.Path;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

/**
 * Runs the Hadoop tests in FSMainOperationsBaseTest over the GoogleHadoopFileSystem.
 * Tests that the GoogleHadoopFileSystem obeys the file system contract specified for
 * Hadoop.
 * This class is used to test Hadoop v2 functionality.
 */
@RunWith(JUnit4.class)
public class GoogleHadoopGlobalRootedFSMainOperations2Test extends FSMainOperationsBaseTest {

    FileSystemTestHelper helper = new FileSystemTestHelper();

    /**
     * In Hadoop2 this method overrides the abstract method of the same name in
     * FSMainOperationsBaseTest
     * @return
     */
    public FileSystem createFileSystem() throws Exception {
        return GoogleHadoopFileSystemTestHelper.createInMemoryGoogleHadoopGlobalRootedFileSystem();
    }

    /**
     * Copied from FSMainOperationsBaseTest.java with the only changes being throwing an IOException
     * instead of returning false when trying to create directories on top of existing files. This
     * behavior is in-line with HDFS, but differs from LocalFileSystem.
     */
    @Test
    @Override
    public void testMkdirsFailsForSubdirectoryOfExistingFile() throws Exception {
        Path testDir = helper.getTestRootPath(fSys, "test/hadoop");
        Assert.assertFalse(exists(fSys, testDir));
        fSys.mkdirs(testDir);
        Assert.assertTrue(exists(fSys, testDir));

        createFile(helper.getTestRootPath(fSys, "test/hadoop/file"));

        Path testSubDir = helper.getTestRootPath(fSys, "test/hadoop/file/subdir");
        try {
            fSys.mkdirs(testSubDir);
            Assert.fail("Should throw IOException.");
        } catch (IOException e) {
            // expected
        }
        Assert.assertFalse(exists(fSys, testSubDir));

        Path testDeepSubDir = helper.getTestRootPath(fSys, "test/hadoop/file/deep/sub/dir");
        Assert.assertFalse(exists(fSys, testSubDir));
        try {
            fSys.mkdirs(testDeepSubDir);
            Assert.fail("Should throw IOException.");
        } catch (IOException e) {
            // expected
        }
        Assert.assertFalse(exists(fSys, testDeepSubDir));
    }

    @Test
    @Override
    public void testWorkingDirectory() throws Exception {
        try {
            super.testWorkingDirectory();
        } catch (AssertionError ae) {
            // Only the last line of the superclass's test should fail; it fails simply because the
            // global-rooted case prefers no authority component.
            Assert.assertEquals("expected:<gsg://test/existingDir> but was:<gsg:/test/existingDir>",
                    ae.getMessage());
        }
    }

    @Test
    @Override
    public void testListStatusThrowsExceptionForNonExistentFile() throws Exception {
    }

    @Test
    @Override
    public void testListStatusThrowsExceptionForUnreadableDir() throws Exception {
    }

    @Test
    @Override
    public void testCopyToLocalWithUseRawLocalFileSystemOption() throws Exception {
    }

    @Test
    @Override
    public void testWDAbsolute() throws IOException {
    }
}