testpath.java

hadoop:Nutch集群平台

/**
 * Copyright 2006 The Apache Software Foundation
 *
 * 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 org.apache.hadoop.fs;

import java.util.*;
import junit.framework.TestCase;

public class TestPath extends TestCase {
  public void testToString() {
    toStringTest("/");
    toStringTest("/foo");
    toStringTest("/foo/bar");
    toStringTest("foo");
    toStringTest("foo/bar");
    toStringTest("");
    if (Path.WINDOWS) {
      toStringTest("c:");
      toStringTest("c:/");
      toStringTest("c:foo");
      toStringTest("c:foo/bar");
      toStringTest("c:foo/bar");
      toStringTest("c:/foo/bar");
    }
  }

  private void toStringTest(String pathString) {
    assertEquals(pathString, new Path(pathString).toString());
  }

  public void testNormalize() {
    assertEquals("/", new Path("//").toString());
    assertEquals("/foo", new Path("/foo/").toString());
    assertEquals("/foo", new Path("/foo/").toString());
    assertEquals("foo", new Path("foo/").toString());
    assertEquals("foo", new Path("foo//").toString());
    assertEquals("foo/bar", new Path("foo//bar").toString());
    if (Path.WINDOWS) {
      assertEquals("c:/a/b", new Path("c:\\a\\b").toString());
    }
  }

  public void testIsAbsolute() {
    assertTrue(new Path("/").isAbsolute());
    assertTrue(new Path("/foo").isAbsolute());
    assertFalse(new Path("foo").isAbsolute());
    assertFalse(new Path("foo/bar").isAbsolute());
    assertFalse(new Path("").isAbsolute());
    if (Path.WINDOWS) {
      assertTrue(new Path("c:/a/b").isAbsolute());
      assertFalse(new Path("c:a/b").isAbsolute());
    }
  }

  public void testParent() {
    assertEquals(new Path("/foo"), new Path("/foo/bar").getParent());
    assertEquals(new Path("foo"), new Path("foo/bar").getParent());
    assertEquals(new Path("/"), new Path("/foo").getParent());
    if (Path.WINDOWS) {
      assertEquals(new Path("c:/"), new Path("c:/foo").getParent());
    }
  }

  public void testChild() {
    assertEquals(new Path(""), new Path("", ""));
    assertEquals(new Path("/"), new Path("/", ""));
    assertEquals(new Path("/"), new Path("", "/"));
    assertEquals(new Path("/foo"), new Path("/", "foo"));
    assertEquals(new Path("/foo/bar"), new Path("/foo", "bar"));
    assertEquals(new Path("/foo/bar/baz"), new Path("/foo/bar", "baz"));
    assertEquals(new Path("/foo/bar/baz"), new Path("/foo", "bar/baz"));
    assertEquals(new Path("foo"), new Path("", "foo"));
    assertEquals(new Path("foo/bar"), new Path("foo", "bar"));
    assertEquals(new Path("foo/bar/baz"), new Path("foo", "bar/baz"));
    assertEquals(new Path("foo/bar/baz"), new Path("foo/bar", "baz"));
    assertEquals(new Path("/foo"), new Path("/bar", "/foo"));
    if (Path.WINDOWS) {
      assertEquals(new Path("c:/foo"), new Path("c:/bar", "/foo"));
      assertEquals(new Path("c:/foo"), new Path("/bar", "c:/foo"));
      assertEquals(new Path("c:/foo"), new Path("d:/bar", "c:/foo"));
    }
  }
  
  public void testEquals() {
    assertFalse(new Path("/").equals(new Path("/foo")));
  }

  public void testDots() {
    // Test Path(String) 
    assertEquals(new Path("/foo/bar/baz").toString(), "/foo/bar/baz");
    assertEquals(new Path("/foo/bar/../baz").toString(), "/foo/baz");
    assertEquals(new Path("/foo/bar/./baz").toString(), "/foo/bar/baz");
    assertEquals(new Path("/foo/bar/baz/../../fud").toString(), "/foo/fud");
    assertEquals(new Path("/foo/bar/baz/.././../fud").toString(), "/foo/fud");
    assertEquals(new Path("../../foo/bar").toString(), "../../foo/bar");
    assertEquals(new Path(".././../foo/bar").toString(), "../../foo/bar");
    assertEquals(new Path("./foo/bar/baz").toString(), "foo/bar/baz");
    assertEquals(new Path("/foo/bar/../../baz/boo").toString(), "/baz/boo");
    assertEquals(new Path("/foo/bar/../../../baz").toString(), "../baz");
    assertEquals(new Path("foo/bar/").toString(), "foo/bar");
    assertEquals(new Path("foo/bar/../baz").toString(), "foo/baz");
    assertEquals(new Path("foo/bar/../../baz/boo").toString(), "baz/boo");
    
    
    // Test Path(Path,Path)
    assertEquals(new Path("/foo/bar", "baz/boo").toString(), "/foo/bar/baz/boo");
    assertEquals(new Path("foo/bar/","baz/bud").toString(), "foo/bar/baz/bud");
    
    assertEquals(new Path("/foo/bar","../../boo/bud").toString(), "/boo/bud");
    assertEquals(new Path("foo/bar","../../boo/bud").toString(), "boo/bud");
    assertEquals(new Path("","boo/bud").toString(), "boo/bud");

    assertEquals(new Path("/foo/bar/baz","../../boo/bud").toString(), "/foo/boo/bud");
    assertEquals(new Path("foo/bar/baz","../../boo/bud").toString(), "foo/boo/bud");

    assertEquals(new Path("/foo/bar/","../../../baz/boo").toString(), "../baz/boo");
    
    assertEquals(new Path("../../","../../boo/bud").toString(), "../../../../boo/bud");
    assertEquals(new Path("../../foo","../../../boo/bud").toString(), "../../../../boo/bud");
    assertEquals(new Path("../../foo/bar","../boo/bud").toString(), "../../foo/boo/bud");

    assertEquals(new Path("foo/bar/baz","../../..").toString(), "");
    assertEquals(new Path("foo/bar/baz","../../../../..").toString(), "../..");
  }
  
}