<?php 
 
namespace Melody\Validation\Constraints; 
 
use Melody\Validation\Validator as v; 
 
class ContainsDigitTest extends \PHPUnit_Framework_TestCase 
{ 
 
    public function test_valid_string_should_pass() 
    { 
        $this->assertTrue(v::containsDigit(2)->validate('abcdef0123')); 
    } 
 
    public function test_invalid_string_should_fail_validation() 
    { 
        $this->assertFalse(v::containsDigit(5)->validate('abcdef0123')); 
    } 
 
    public function test_invalid_argument_exception() 
    { 
        $this->setExpectedException('InvalidArgumentException');
 
        $this->assertInstanceOf('InvalidArgumentException', v::containsDigit("invalid argument")); 
    } 
 
    public function test_not_string_argument_exception()
 
    {
 
        $this->setExpectedException('InvalidArgumentException');
 
        $this->assertInstanceOf('InvalidArgumentException', v::containsDigit(5)->validate(null));
 
    } 
 
} 
 
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