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Filename : test-path.js
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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

var assert = require('assert');

var path = require('.');

var isWindows = process.platform === 'win32';

// Mock the node.js path
var f = __dirname + '/simple/test-path.js';

assert.equal(path.basename(f), 'test-path.js');
assert.equal(path.basename(f, '.js'), 'test-path');
assert.equal(path.basename(''), '');
assert.equal(path.basename('/dir/basename.ext'), 'basename.ext');
assert.equal(path.basename('/basename.ext'), 'basename.ext');
assert.equal(path.basename('basename.ext'), 'basename.ext');
assert.equal(path.basename('basename.ext/'), 'basename.ext');
assert.equal(path.basename('basename.ext//'), 'basename.ext');

if (isWindows) {
  // On Windows a backslash acts as a path separator.
  assert.equal(path.basename('\\dir\\basename.ext'), 'basename.ext');
  assert.equal(path.basename('\\basename.ext'), 'basename.ext');
  assert.equal(path.basename('basename.ext'), 'basename.ext');
  assert.equal(path.basename('basename.ext\\'), 'basename.ext');
  assert.equal(path.basename('basename.ext\\\\'), 'basename.ext');

} else {
  // On unix a backslash is just treated as any other character.
  assert.equal(path.basename('\\dir\\basename.ext'), '\\dir\\basename.ext');
  assert.equal(path.basename('\\basename.ext'), '\\basename.ext');
  assert.equal(path.basename('basename.ext'), 'basename.ext');
  assert.equal(path.basename('basename.ext\\'), 'basename.ext\\');
  assert.equal(path.basename('basename.ext\\\\'), 'basename.ext\\\\');
}

// POSIX filenames may include control characters
// c.f. http://www.dwheeler.com/essays/fixing-unix-linux-filenames.html
if (!isWindows) {
  var controlCharFilename = 'Icon' + String.fromCharCode(13);
  assert.equal(path.basename('/a/b/' + controlCharFilename),
               controlCharFilename);
}

assert.equal(path.extname(f), '.js');

assert.equal(path.dirname(f).substr(-11),
             isWindows ? 'test\\simple' : 'test/simple');
assert.equal(path.dirname('/a/b/'), '/a');
assert.equal(path.dirname('/a/b'), '/a');
assert.equal(path.dirname('/a'), '/');
assert.equal(path.dirname(''), '.');
assert.equal(path.dirname('/'), '/');
assert.equal(path.dirname('////'), '/');

if (isWindows) {
  assert.equal(path.dirname('c:\\'), 'c:\\');
  assert.equal(path.dirname('c:\\foo'), 'c:\\');
  assert.equal(path.dirname('c:\\foo\\'), 'c:\\');
  assert.equal(path.dirname('c:\\foo\\bar'), 'c:\\foo');
  assert.equal(path.dirname('c:\\foo\\bar\\'), 'c:\\foo');
  assert.equal(path.dirname('c:\\foo\\bar\\baz'), 'c:\\foo\\bar');
  assert.equal(path.dirname('\\'), '\\');
  assert.equal(path.dirname('\\foo'), '\\');
  assert.equal(path.dirname('\\foo\\'), '\\');
  assert.equal(path.dirname('\\foo\\bar'), '\\foo');
  assert.equal(path.dirname('\\foo\\bar\\'), '\\foo');
  assert.equal(path.dirname('\\foo\\bar\\baz'), '\\foo\\bar');
  assert.equal(path.dirname('c:'), 'c:');
  assert.equal(path.dirname('c:foo'), 'c:');
  assert.equal(path.dirname('c:foo\\'), 'c:');
  assert.equal(path.dirname('c:foo\\bar'), 'c:foo');
  assert.equal(path.dirname('c:foo\\bar\\'), 'c:foo');
  assert.equal(path.dirname('c:foo\\bar\\baz'), 'c:foo\\bar');
  assert.equal(path.dirname('\\\\unc\\share'), '\\\\unc\\share');
  assert.equal(path.dirname('\\\\unc\\share\\foo'), '\\\\unc\\share\\');
  assert.equal(path.dirname('\\\\unc\\share\\foo\\'), '\\\\unc\\share\\');
  assert.equal(path.dirname('\\\\unc\\share\\foo\\bar'),
               '\\\\unc\\share\\foo');
  assert.equal(path.dirname('\\\\unc\\share\\foo\\bar\\'),
               '\\\\unc\\share\\foo');
  assert.equal(path.dirname('\\\\unc\\share\\foo\\bar\\baz'),
               '\\\\unc\\share\\foo\\bar');
}


assert.equal(path.extname(''), '');
assert.equal(path.extname('/path/to/file'), '');
assert.equal(path.extname('/path/to/file.ext'), '.ext');
assert.equal(path.extname('/path.to/file.ext'), '.ext');
assert.equal(path.extname('/path.to/file'), '');
assert.equal(path.extname('/path.to/.file'), '');
assert.equal(path.extname('/path.to/.file.ext'), '.ext');
assert.equal(path.extname('/path/to/f.ext'), '.ext');
assert.equal(path.extname('/path/to/..ext'), '.ext');
assert.equal(path.extname('file'), '');
assert.equal(path.extname('file.ext'), '.ext');
assert.equal(path.extname('.file'), '');
assert.equal(path.extname('.file.ext'), '.ext');
assert.equal(path.extname('/file'), '');
assert.equal(path.extname('/file.ext'), '.ext');
assert.equal(path.extname('/.file'), '');
assert.equal(path.extname('/.file.ext'), '.ext');
assert.equal(path.extname('.path/file.ext'), '.ext');
assert.equal(path.extname('file.ext.ext'), '.ext');
assert.equal(path.extname('file.'), '.');
assert.equal(path.extname('.'), '');
assert.equal(path.extname('./'), '');
assert.equal(path.extname('.file.ext'), '.ext');
assert.equal(path.extname('.file'), '');
assert.equal(path.extname('.file.'), '.');
assert.equal(path.extname('.file..'), '.');
assert.equal(path.extname('..'), '');
assert.equal(path.extname('../'), '');
assert.equal(path.extname('..file.ext'), '.ext');
assert.equal(path.extname('..file'), '.file');
assert.equal(path.extname('..file.'), '.');
assert.equal(path.extname('..file..'), '.');
assert.equal(path.extname('...'), '.');
assert.equal(path.extname('...ext'), '.ext');
assert.equal(path.extname('....'), '.');
assert.equal(path.extname('file.ext/'), '.ext');
assert.equal(path.extname('file.ext//'), '.ext');
assert.equal(path.extname('file/'), '');
assert.equal(path.extname('file//'), '');
assert.equal(path.extname('file./'), '.');
assert.equal(path.extname('file.//'), '.');

if (isWindows) {
  // On windows, backspace is a path separator.
  assert.equal(path.extname('.\\'), '');
  assert.equal(path.extname('..\\'), '');
  assert.equal(path.extname('file.ext\\'), '.ext');
  assert.equal(path.extname('file.ext\\\\'), '.ext');
  assert.equal(path.extname('file\\'), '');
  assert.equal(path.extname('file\\\\'), '');
  assert.equal(path.extname('file.\\'), '.');
  assert.equal(path.extname('file.\\\\'), '.');

} else {
  // On unix, backspace is a valid name component like any other character.
  assert.equal(path.extname('.\\'), '');
  assert.equal(path.extname('..\\'), '.\\');
  assert.equal(path.extname('file.ext\\'), '.ext\\');
  assert.equal(path.extname('file.ext\\\\'), '.ext\\\\');
  assert.equal(path.extname('file\\'), '');
  assert.equal(path.extname('file\\\\'), '');
  assert.equal(path.extname('file.\\'), '.\\');
  assert.equal(path.extname('file.\\\\'), '.\\\\');
}

// path.join tests
var failures = [];
var joinTests =
    // arguments                     result
    [[['.', 'x/b', '..', '/b/c.js'], 'x/b/c.js'],
     [['/.', 'x/b', '..', '/b/c.js'], '/x/b/c.js'],
     [['/foo', '../../../bar'], '/bar'],
     [['foo', '../../../bar'], '../../bar'],
     [['foo/', '../../../bar'], '../../bar'],
     [['foo/x', '../../../bar'], '../bar'],
     [['foo/x', './bar'], 'foo/x/bar'],
     [['foo/x/', './bar'], 'foo/x/bar'],
     [['foo/x/', '.', 'bar'], 'foo/x/bar'],
     [['./'], './'],
     [['.', './'], './'],
     [['.', '.', '.'], '.'],
     [['.', './', '.'], '.'],
     [['.', '/./', '.'], '.'],
     [['.', '/////./', '.'], '.'],
     [['.'], '.'],
     [['', '.'], '.'],
     [['', 'foo'], 'foo'],
     [['foo', '/bar'], 'foo/bar'],
     [['', '/foo'], '/foo'],
     [['', '', '/foo'], '/foo'],
     [['', '', 'foo'], 'foo'],
     [['foo', ''], 'foo'],
     [['foo/', ''], 'foo/'],
     [['foo', '', '/bar'], 'foo/bar'],
     [['./', '..', '/foo'], '../foo'],
     [['./', '..', '..', '/foo'], '../../foo'],
     [['.', '..', '..', '/foo'], '../../foo'],
     [['', '..', '..', '/foo'], '../../foo'],
     [['/'], '/'],
     [['/', '.'], '/'],
     [['/', '..'], '/'],
     [['/', '..', '..'], '/'],
     [[''], '.'],
     [['', ''], '.'],
     [[' /foo'], ' /foo'],
     [[' ', 'foo'], ' /foo'],
     [[' ', '.'], ' '],
     [[' ', '/'], ' /'],
     [[' ', ''], ' '],
     [['/', 'foo'], '/foo'],
     [['/', '/foo'], '/foo'],
     [['/', '//foo'], '/foo'],
     [['/', '', '/foo'], '/foo'],
     [['', '/', 'foo'], '/foo'],
     [['', '/', '/foo'], '/foo']
    ];

// Windows-specific join tests
if (isWindows) {
  joinTests = joinTests.concat(
    [// UNC path expected
     [['//foo/bar'], '//foo/bar/'],
     [['\\/foo/bar'], '//foo/bar/'],
     [['\\\\foo/bar'], '//foo/bar/'],
     // UNC path expected - server and share separate
     [['//foo', 'bar'], '//foo/bar/'],
     [['//foo/', 'bar'], '//foo/bar/'],
     [['//foo', '/bar'], '//foo/bar/'],
     // UNC path expected - questionable
     [['//foo', '', 'bar'], '//foo/bar/'],
     [['//foo/', '', 'bar'], '//foo/bar/'],
     [['//foo/', '', '/bar'], '//foo/bar/'],
     // UNC path expected - even more questionable
     [['', '//foo', 'bar'], '//foo/bar/'],
     [['', '//foo/', 'bar'], '//foo/bar/'],
     [['', '//foo/', '/bar'], '//foo/bar/'],
     // No UNC path expected (no double slash in first component)
     [['\\', 'foo/bar'], '/foo/bar'],
     [['\\', '/foo/bar'], '/foo/bar'],
     [['', '/', '/foo/bar'], '/foo/bar'],
     // No UNC path expected (no non-slashes in first component - questionable)
     [['//', 'foo/bar'], '/foo/bar'],
     [['//', '/foo/bar'], '/foo/bar'],
     [['\\\\', '/', '/foo/bar'], '/foo/bar'],
     [['//'], '/'],
     // No UNC path expected (share name missing - questionable).
     [['//foo'], '/foo'],
     [['//foo/'], '/foo/'],
     [['//foo', '/'], '/foo/'],
     [['//foo', '', '/'], '/foo/'],
     // No UNC path expected (too many leading slashes - questionable)
     [['///foo/bar'], '/foo/bar'],
     [['////foo', 'bar'], '/foo/bar'],
     [['\\\\\\/foo/bar'], '/foo/bar'],
     // Drive-relative vs drive-absolute paths. This merely describes the
     // status quo, rather than being obviously right
     [['c:'], 'c:.'],
     [['c:.'], 'c:.'],
     [['c:', ''], 'c:.'],
     [['', 'c:'], 'c:.'],
     [['c:.', '/'], 'c:./'],
     [['c:.', 'file'], 'c:file'],
     [['c:', '/'], 'c:/'],
     [['c:', 'file'], 'c:/file']
    ]);
}

// Run the join tests.
joinTests.forEach(function(test) {
  var actual = path.join.apply(path, test[0]);
  var expected = isWindows ? test[1].replace(/\//g, '\\') : test[1];
  var message = 'path.join(' + test[0].map(JSON.stringify).join(',') + ')' +
                '\n  expect=' + JSON.stringify(expected) +
                '\n  actual=' + JSON.stringify(actual);
  if (actual !== expected) failures.push('\n' + message);
  // assert.equal(actual, expected, message);
});
assert.equal(failures.length, 0, failures.join(''));
var joinThrowTests = [true, false, 7, null, {}, undefined, [], NaN];
joinThrowTests.forEach(function(test) {
  assert.throws(function() {
    path.join(test);
  }, TypeError);
  assert.throws(function() {
    path.resolve(test);
  }, TypeError);
});


// path normalize tests
if (isWindows) {
  assert.equal(path.normalize('./fixtures///b/../b/c.js'),
               'fixtures\\b\\c.js');
  assert.equal(path.normalize('/foo/../../../bar'), '\\bar');
  assert.equal(path.normalize('a//b//../b'), 'a\\b');
  assert.equal(path.normalize('a//b//./c'), 'a\\b\\c');
  assert.equal(path.normalize('a//b//.'), 'a\\b');
  assert.equal(path.normalize('//server/share/dir/file.ext'),
               '\\\\server\\share\\dir\\file.ext');
} else {
  assert.equal(path.normalize('./fixtures///b/../b/c.js'),
               'fixtures/b/c.js');
  assert.equal(path.normalize('/foo/../../../bar'), '/bar');
  assert.equal(path.normalize('a//b//../b'), 'a/b');
  assert.equal(path.normalize('a//b//./c'), 'a/b/c');
  assert.equal(path.normalize('a//b//.'), 'a/b');
}

// path.resolve tests
if (isWindows) {
  // windows
  var resolveTests =
      // arguments                                    result
      [[['c:/blah\\blah', 'd:/games', 'c:../a'], 'c:\\blah\\a'],
       [['c:/ignore', 'd:\\a/b\\c/d', '\\e.exe'], 'd:\\e.exe'],
       [['c:/ignore', 'c:/some/file'], 'c:\\some\\file'],
       [['d:/ignore', 'd:some/dir//'], 'd:\\ignore\\some\\dir'],
       [['.'], process.cwd()],
       [['//server/share', '..', 'relative\\'], '\\\\server\\share\\relative'],
       [['c:/', '//'], 'c:\\'],
       [['c:/', '//dir'], 'c:\\dir'],
       [['c:/', '//server/share'], '\\\\server\\share\\'],
       [['c:/', '//server//share'], '\\\\server\\share\\'],
       [['c:/', '///some//dir'], 'c:\\some\\dir']
      ];
} else {
  // Posix
  var resolveTests =
      // arguments                                    result
      [[['/var/lib', '../', 'file/'], '/var/file'],
       [['/var/lib', '/../', 'file/'], '/file'],
       [['a/b/c/', '../../..'], process.cwd()],
       [['.'], process.cwd()],
       [['/some/dir', '.', '/absolute/'], '/absolute']];
}
var failures = [];
resolveTests.forEach(function(test) {
  var actual = path.resolve.apply(path, test[0]);
  var expected = test[1];
  var message = 'path.resolve(' + test[0].map(JSON.stringify).join(',') + ')' +
                '\n  expect=' + JSON.stringify(expected) +
                '\n  actual=' + JSON.stringify(actual);
  if (actual !== expected) failures.push('\n' + message);
  // assert.equal(actual, expected, message);
});
assert.equal(failures.length, 0, failures.join(''));

// path.isAbsolute tests
if (isWindows) {
  assert.equal(path.isAbsolute('//server/file'), true);
  assert.equal(path.isAbsolute('\\\\server\\file'), true);
  assert.equal(path.isAbsolute('C:/Users/'), true);
  assert.equal(path.isAbsolute('C:\\Users\\'), true);
  assert.equal(path.isAbsolute('C:cwd/another'), false);
  assert.equal(path.isAbsolute('C:cwd\\another'), false);
  assert.equal(path.isAbsolute('directory/directory'), false);
  assert.equal(path.isAbsolute('directory\\directory'), false);
} else {
  assert.equal(path.isAbsolute('/home/foo'), true);
  assert.equal(path.isAbsolute('/home/foo/..'), true);
  assert.equal(path.isAbsolute('bar/'), false);
  assert.equal(path.isAbsolute('./baz'), false);
}

// path.relative tests
if (isWindows) {
  // windows
  var relativeTests =
      // arguments                     result
      [['c:/blah\\blah', 'd:/games', 'd:\\games'],
       ['c:/aaaa/bbbb', 'c:/aaaa', '..'],
       ['c:/aaaa/bbbb', 'c:/cccc', '..\\..\\cccc'],
       ['c:/aaaa/bbbb', 'c:/aaaa/bbbb', ''],
       ['c:/aaaa/bbbb', 'c:/aaaa/cccc', '..\\cccc'],
       ['c:/aaaa/', 'c:/aaaa/cccc', 'cccc'],
       ['c:/', 'c:\\aaaa\\bbbb', 'aaaa\\bbbb'],
       ['c:/aaaa/bbbb', 'd:\\', 'd:\\']];
} else {
  // posix
  var relativeTests =
      // arguments                    result
      [['/var/lib', '/var', '..'],
       ['/var/lib', '/bin', '../../bin'],
       ['/var/lib', '/var/lib', ''],
       ['/var/lib', '/var/apache', '../apache'],
       ['/var/', '/var/lib', 'lib'],
       ['/', '/var/lib', 'var/lib']];
}
var failures = [];
relativeTests.forEach(function(test) {
  var actual = path.relative(test[0], test[1]);
  var expected = test[2];
  var message = 'path.relative(' +
                test.slice(0, 2).map(JSON.stringify).join(',') +
                ')' +
                '\n  expect=' + JSON.stringify(expected) +
                '\n  actual=' + JSON.stringify(actual);
  if (actual !== expected) failures.push('\n' + message);
});
assert.equal(failures.length, 0, failures.join(''));

// path.sep tests
if (isWindows) {
  // windows
  assert.equal(path.sep, '\\');
} else {
  // posix
  assert.equal(path.sep, '/');
}

// path.delimiter tests
if (isWindows) {
  // windows
  assert.equal(path.delimiter, ';');
} else {
  // posix
  assert.equal(path.delimiter, ':');
}