Cleanup - The aftermath

Cleaning up the mess I made (and some other stuff). Also made sure
that unsetting the email pattern, respectively validating using
`filter_var()` works properly.

src/Network/Email/Email.php

@@ -579,11 +579,13 @@ public function headerCharset($charset = null) {
 /**
  * EmailPattern setter/getter
  *
- * @param string $regex for email address validation
+ * @param string|bool|null $regex The pattern to use for email address validation,
+ *   null to unset the pattern and make use of filter_var() instead, false or
+ *   nothing to return the current value
  * @return string|$this
  */
-	public function emailPattern($regex = null) {
-		if ($regex === null) {
+	public function emailPattern($regex = false) {
+		if ($regex === false) {
 			return $this->_emailPattern;
 		}
 		$this->_emailPattern = $regex;
@@ -629,10 +631,11 @@ protected function _setEmail($varName, $email, $name) {
  * @throws \InvalidArgumentException If email address does not validate
  */
 	protected function _validateEmail($email) {
-		if ($this->_emailPattern === null && filter_var($email, FILTER_VALIDATE_EMAIL)) {
-			return;
-		}
-		if (preg_match($this->_emailPattern, $email)) {
+		if ($this->_emailPattern === null) {
+			if (filter_var($email, FILTER_VALIDATE_EMAIL)) {
+				return;
+			}
+		} elseif (preg_match($this->_emailPattern, $email)) {
 			return;
 		}
 		throw new InvalidArgumentException(sprintf('Invalid email: "%s"', $email));

src/Network/Session/CacheSession.php

@@ -104,10 +104,11 @@ public function destroy($id) {
  * Helper function called on gc for cache sessions.
  *
  * @param string $maxlifetime Sessions that have not updated for the last maxlifetime seconds will be removed.
- * @return void
+ * @return bool True (irrespective of whether or not the garbage is being successfully collected)
  */
 	public function gc($maxlifetime) {
 		Cache::gc($this->_options['config'], time() - $maxlifetime);
+		return true;
 	}
 
 }

src/View/JsonView.php

@@ -138,7 +138,7 @@ public function render($view = null, $layout = null) {
 /**
  * Serialize view vars
  *
- * @param array|string $serialize The viewVars that need to be serialized
+ * @param array|string $serialize The name(s) of the view variable(s) that need(s) to be serialized
  * @return string The serialized data
  */
 	protected function _serialize($serialize) {

src/View/XmlView.php

@@ -122,7 +122,7 @@ public function render($view = null, $layout = null) {
 /**
  * Serialize view vars.
  *
- * @param array|string $serialize The viewVars that need to be serialized.
+ * @param array|string $serialize The name(s) of the view variable(s) that need(s) to be serialized
  * @return string The serialized data
  */
 	protected function _serialize($serialize) {

tests/TestCase/Network/Email/EmailTest.php

@@ -333,6 +333,25 @@ public function testCustomEmailValidation() {
 		), $this->CakeEmail->to());
 	}
 
+/**
+ * Tests that it is possible to unset the email pattern and make use of filter_var() instead.
+ *
+ * @return void
+ *
+ * @expectedException \InvalidArgumentException
+ * @expectedExceptionMessage Invalid email: "fail.@example.com"
+ */
+	public function testUnsetEmailPattern() {
+		$email = new Email();
+		$this->assertSame(Email::EMAIL_PATTERN, $email->emailPattern());
+
+		$email->emailPattern(null);
+		$this->assertNull($email->emailPattern());
+
+		$email->to('pass@example.com');
+		$email->to('fail.@example.com');
+	}
+
 /**
  * testFormatAddress method
  *