Commits
-------

100e97e [Filesystem] Fixed warnings in makePathRelative().
f5f5c21 [Filesystem] Fixed typos in the docblocks.
d4243a2 [Filesystem] Fixed a bug in remove being unable to remove symlinks to unexisting file or directory.
11a676d [Filesystem] Added unit tests for mirror method.
8c94069 [Filesystem] Added unit tests for isAbsolutePath method.
2ee4b88 [Filesystem] Added unit tests for makePathRelative method.
21860cb [Filesystem] Added unit tests for symlink method.
a041feb [Filesystem] Added unit tests for rename method.
8071859 [Filesystem] Added unit tests for chmod method.
bba0080 [Filesystem] Added unit tests for remove method.
8e861b7 [Filesystem] Introduced workspace directory to limit complexity of tests.
a91e200 [Filesystem] Added unit tests for touch method.
7e297db [Filesystem] Added unit tests for mkdir method.
6ac5486 [Filesystem] Added unit tests for copy method.
1c833e7 [Filesystem] Added missing docblock comment.

Discussion
----------

[Filesystem] Fixed a bug in remove() being unable to unlink broken symlinks

While working on test coverage for Filesystem class I discovered a bug in remove() method.

Before removing a file a check is made if it exists:

    if (!file_exists($file)) {
        continue;
    }

Problem is [file_exists()](http://php.net/file_exists) returns false if link's target file doesn't exist. Therefore remove() will fail to delete a directory containing a broken link. Solution is to handle links a bit different:

    if (!file_exists($file) && !is_link($file)) {
        continue;
    }

Additionally, this PR improves test coverage of Filesystem component.

Bug fix: yes
Feature addition: no
Backwards compatibility break: no
Symfony2 tests pass: yes

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by cordoval at 2012-04-07T00:55:59Z

✌.|•͡˘‿•͡˘|.✌

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by fabpot at 2012-04-07T06:12:34Z

Tests do not pass for me:

    PHPUnit 3.6.10 by Sebastian Bergmann.

    Configuration read from /Users/fabien/work/symfony/git/symfony/phpunit.xml.dist

    .........................EE.......

    Time: 0 seconds, Memory: 5.25Mb

    There were 2 errors:

    1) Symfony\Component\Filesystem\Tests\FilesystemTest::testMakePathRelative with data set #0 ('/var/lib/symfony/src/Symfony/', '/var/lib/symfony/src/Symfony/Component', '../')
    Uninitialized string offset: 29

    .../rc/Symfony/Component/Filesystem/Filesystem.php:183
    .../rc/Symfony/Component/Filesystem/Tests/FilesystemTest.php:434

    2) Symfony\Component\Filesystem\Tests\FilesystemTest::testMakePathRelative with data set #1 ('var/lib/symfony/', 'var/lib/symfony/src/Symfony/Component', '../../../')
    Uninitialized string offset: 16

    .../rc/Symfony/Component/Filesystem/Filesystem.php:183
    .../rc/Symfony/Component/Filesystem/Tests/FilesystemTest.php:434

    FAILURES!
    Tests: 34, Assertions: 67, Errors: 2.

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by jakzal at 2012-04-07T07:26:15Z

Sorry for this. For some reason my PHP error reporting level was to low to catch this...

Should be fixed now but I needed to modify the makePathRelative() (this bug existed before).