org\bovigo\vfs\vfsStreamWrapperMkDirTestCase::mkDirShouldNotOverwriteExistingDirectoriesAndTriggerE_USER_WARNING PHP Method

    public function mkDirShouldNotOverwriteExistingDirectoriesAndTriggerE_USER_WARNING()
    {
        vfsStream::setup('root');
        $dir = vfsStream::url('root/dir');
        $this->assertTrue(mkdir($dir));
        $this->assertFalse(mkdir($dir));
    }