[Filesystem] added exists method

Author: Julien Brochet

Filesystem.php

@@ -66,6 +66,24 @@ public function mkdir($dirs, $mode = 0777)
  return $ret;
  }
 
+ /**
+ * Checks the existence of files or directories.
+ *
+ * @param string|array|\Traversable $files A filename, an array of files, or a \Traversable instance to check
+ *
+ * @return Boolean true if the file exists, false otherwise
+ */
+ public function exists($files)
+ {
+ foreach ($this->toIterator($files) as $file) {
+ if (!file_exists($file)) {
+ return false;
+ }
+ }
+
+ return true;
+ }
+
  /**
  * Creates empty files.
  *

Tests/FilesystemTest.php

@@ -313,6 +313,56 @@ public function testRemoveCleansInvalidLinks()
  $this->assertTrue(!is_dir($basePath));
  }
 
+ public function testFilesExists()
+ {
+ $basePath = $this->workspace.DIRECTORY_SEPARATOR.'directory'.DIRECTORY_SEPARATOR;
+
+ mkdir($basePath);
+ touch($basePath.'file1');
+ mkdir($basePath.'folder');
+
+ $this->assertTrue($this->filesystem->exists($basePath.'file1'));
+ $this->assertTrue($this->filesystem->exists($basePath.'folder'));
+ }
+
+ public function testFilesExistsTraversableObjectOfFilesAndDirectories()
+ {
+ $basePath = $this->workspace.DIRECTORY_SEPARATOR;
+
+ mkdir($basePath.'dir');
+ touch($basePath.'file');
+
+ $files = new \ArrayObject(array(
+ $basePath.'dir', $basePath.'file'
+ ));
+
+ $this->assertTrue($this->filesystem->exists($files));
+ }
+
+ public function testFilesNotExistsTraversableObjectOfFilesAndDirectories()
+ {
+ $basePath = $this->workspace.DIRECTORY_SEPARATOR;
+
+ mkdir($basePath.'dir');
+ touch($basePath.'file');
+ touch($basePath.'file2');
+
+ $files = new \ArrayObject(array(
+ $basePath.'dir', $basePath.'file', $basePath.'file2'
+ ));
+
+ unlink($basePath.'file');
+
+ $this->assertFalse($this->filesystem->exists($files));
+ }
+
+ public function testInvalidFileNotExists()
+ {
+ $basePath = $this->workspace.DIRECTORY_SEPARATOR.'directory'.DIRECTORY_SEPARATOR;
+
+ $this->assertFalse($this->filesystem->exists($basePath.time()));
+ }
+
  public function testChmodChangesFileMode()
  {
  $this->markAsSkippedIfChmodIsMissing();
@@ -421,18 +471,18 @@ public function testSymlink()
  $this->assertTrue(is_link($link));
  $this->assertEquals($file, readlink($link));
  }
- 
+
  /**
- * @depends testSymlink 
+ * @depends testSymlink
  */
  public function testRemoveSymlink()
  {
  $this->markAsSkippedIfSymlinkIsMissing();
- 
+
  $link = $this->workspace.DIRECTORY_SEPARATOR.'link';
- 
+
  $this->filesystem->remove($link);
- 
+
  $this->assertTrue(!is_link($link));
  }