Added Lowercase Validator

library/Respect/Validation/Exceptions/LowercaseException.php

@@ -0,0 +1,50 @@
+<?php
+
+namespace Respect\Validation\Exceptions;
+
+class LowercaseException extends ValidationException
+{
+
+    public static $defaultTemplates = array(
+        self::MODE_DEFAULT => array(
+            self::STANDARD => '{{name}} must be lowercase',
+        ),
+        self::MODE_NEGATIVE => array(
+            self::STANDARD => '{{name}} must not be lowercase',
+        )
+    );
+
+}
+
+/**
+ * LICENSE
+ *
+ * Copyright (c) 2011, Jean Pimentel.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ *     * Redistributions of source code must retain the above copyright notice,
+ *       this list of conditions and the following disclaimer.
+ *
+ *     * Redistributions in binary form must reproduce the above copyright notice,
+ *       this list of conditions and the following disclaimer in the documentation
+ *       and/or other materials provided with the distribution.
+ *
+ *     * Neither the name of Alexandre Gomes Gaigalas nor the names of its
+ *       contributors may be used to endorse or promote products derived from this
+ *       software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */

library/Respect/Validation/Rules/Lowercase.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace Respect\Validation\Rules;
+
+class Lowercase extends AbstractRule
+{
+
+    public function validate($input)
+    {
+        return $input === strtolower($input);
+    }
+
+}

tests/library/Respect/Validation/Rules/LowercaseTest.php

@@ -0,0 +1,52 @@
+<?php
+
+namespace Respect\Validation\Rules;
+
+class LowercaseTest extends \PHPUnit_Framework_TestCase
+{
+
+    /**
+     * @dataProvider providerForValidLowercase
+     */
+    public function test_valid_lowercase_should_return_true($input)
+    {
+        $lowercase = new Lowercase();
+        $this->assertTrue($lowercase->validate($input));
+        $this->assertTrue($lowercase->assert($input));
+        $this->assertTrue($lowercase->check($input));
+    }
+    
+    /**
+     * @dataProvider providerForInvalidLowercase
+     * @expectedException Respect\Validation\Exceptions\LowercaseException
+     */
+    public function test_invalid_lowercase_should_throw_exception($input)
+    {
+        $lowercase = new Lowercase();
+        $this->assertFalse($lowercase->validate($input));
+        $this->assertFalse($lowercase->assert($input));
+    }
+    
+    public function providerForValidLowercase()
+    {
+        return array(
+            array('lowercase'),
+            array('lowercase-with-dashes'),
+            array('lowercase with spaces'),
+            array('lowercase with numbers 123'),
+            array('lowercase with specials characters like ã ç ê'),            
+            array('with specials characters like # $ % & * +'),            
+        );
+    }
+    
+    public function providerForInvalidLowercase()
+    {
+        return array(
+            array('UPPERCASE'),
+            array('CamelCase'),
+            array('First Character Uppercase'),
+            array('With Numbers 1 2 3'),
+        );
+    }
+
+}