<?php
/**
 * Zend Framework (http://framework.zend.com/)
 *
 * @link      http://github.com/zendframework/zf2 for the canonical source repository
 * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
 * @license   http://framework.zend.com/license/new-bsd New BSD License
 */

namespace ZendTest\Validator;

use PHPUnit\Framework\TestCase;
use Zend\Validator\Regex;
use ReflectionProperty;
use Zend\Validator\Exception\InvalidArgumentException;

/**
 * @group      Zend_Validator
 */
class RegexTest extends TestCase
{
    /**
     * Ensures that the validator follows expected behavior
     *
     * @return void
     */
    public function testBasic()
    {
        /**
         * The elements of each array are, in order:
         *      - pattern
         *      - expected validation result
         *      - array of test input values
         */
        $valuesExpected = [
            ['/[a-z]/', true, ['abc123', 'foo', 'a', 'z']],
            ['/[a-z]/', false, ['123', 'A']]
            ];
        foreach ($valuesExpected as $element) {
            $validator = new Regex($element[0]);
            foreach ($element[2] as $input) {
                $this->assertEquals($element[1], $validator->isValid($input));
            }
        }
    }

    /**
     * Ensures that getMessages() returns expected default value
     *
     * @return void
     */
    public function testGetMessages()
    {
        $validator = new Regex('/./');
        $this->assertEquals([], $validator->getMessages());
    }

    /**
     * Ensures that getPattern() returns expected value
     *
     * @return void
     */
    public function testGetPattern()
    {
        $validator = new Regex('/./');
        $this->assertEquals('/./', $validator->getPattern());
    }

    /**
     * Ensures that a bad pattern results in a thrown exception upon isValid() call
     *
     * @return void
     */
    public function testBadPattern()
    {
        $this->expectException(InvalidArgumentException::class);
        $this->expectExceptionMessage('Internal error parsing');
        $validator = new Regex('/');
    }

    /**
     * @ZF-4352
     */
    public function testNonStringValidation()
    {
        $validator = new Regex('/./');
        $this->assertFalse($validator->isValid([1 => 1]));
    }

    /**
     * @ZF-11863
     * @dataProvider specialCharValidationProvider
     */
    public function testSpecialCharValidation($expected, $input)
    {
        $validator = new Regex('/^[[:alpha:]\']+$/iu');
        $this->assertEquals(
            $expected,
            $validator->isValid($input),
            'Reason: ' . implode('', $validator->getMessages())
        );
    }

    /**
     * The elements of each array are, in order:
     *      - expected validation result
     *      - test input value
     */
    public function specialCharValidationProvider()
    {
        return [
            [true, 'test'],
            [true, 'òèùtestòò'],
            [true, 'testà'],
            [true, 'teààst'],
            [true, 'ààòòìùéé'],
            [true, 'èùòìiieeà'],
            [false, 'test99'],
        ];
    }

    public function testEqualsMessageTemplates()
    {
        $validator = new Regex('//');
        $this->assertAttributeEquals(
            $validator->getOption('messageTemplates'),
            'messageTemplates',
            $validator
        );
    }

    public function testEqualsMessageVariables()
    {
        $validator = new Regex('//');
        $this->assertAttributeEquals(
            $validator->getOption('messageVariables'),
            'messageVariables',
            $validator
        );
    }

    public function invalidConstructorArgumentsProvider()
    {
        return [
            'true'       => [true],
            'false'      => [false],
            'zero'       => [0],
            'int'        => [1],
            'zero-float' => [0.0],
            'float'      => [1.0],
            'object'     => [(object) []],
        ];
    }

    /**
     * @dataProvider invalidConstructorArgumentsProvider
     */
    public function testConstructorRaisesExceptionWhenProvidedInvalidArguments($options)
    {
        $this->expectException(InvalidArgumentException::class);
        $validator = new Regex($options);
    }

    public function testConstructorRaisesExceptionWhenProvidedWithInvalidOptionsArray()
    {
        $options = ['foo' => 'bar'];
        $this->expectException(InvalidArgumentException::class);
        $validator = new Regex($options);
    }

    public function testIsValidShouldReturnFalseWhenRegexPatternIsInvalid()
    {
        $validator = new Regex('//');
        $pattern   = '/';

        $r = new ReflectionProperty($validator, 'pattern');
        $r->setAccessible(true);
        $r->setValue($validator, $pattern);

        $this->assertFalse($validator->isValid('test'));
    }
}