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<?php
namespace HamcrestCore;

class IsInstanceOfTest extends HamcrestAbstractMatcherTest
{

    private $_baseClassInstance;
    private $_subClassInstance;

    public function setUp()
    {
        $this->_baseClassInstance = new HamcrestCoreSampleBaseClass('good');
        $this->_subClassInstance = new HamcrestCoreSampleSubClass('good');
    }

    protected function createMatcher()
    {
        return HamcrestCoreIsInstanceOf::anInstanceOf('stdClass');
    }

    public function testEvaluatesToTrueIfArgumentIsInstanceOfASpecificClass()
    {
        assertThat($this->_baseClassInstance, anInstanceOf('HamcrestCoreSampleBaseClass'));
        assertThat($this->_subClassInstance, anInstanceOf('HamcrestCoreSampleSubClass'));
        assertThat(null, not(anInstanceOf('HamcrestCoreSampleBaseClass')));
        assertThat(new stdClass(), not(anInstanceOf('HamcrestCoreSampleBaseClass')));
    }

    public function testEvaluatesToFalseIfArgumentIsNotAnObject()
    {
        assertThat(null, not(anInstanceOf('HamcrestCoreSampleBaseClass')));
        assertThat(false, not(anInstanceOf('HamcrestCoreSampleBaseClass')));
        assertThat(5, not(anInstanceOf('HamcrestCoreSampleBaseClass')));
        assertThat('foo', not(anInstanceOf('HamcrestCoreSampleBaseClass')));
        assertThat(array(1, 2, 3), not(anInstanceOf('HamcrestCoreSampleBaseClass')));
    }

    public function testHasAReadableDescription()
    {
        $this->assertDescription('an instance of stdClass', anInstanceOf('stdClass'));
    }

    public function testDecribesActualClassInMismatchMessage()
    {
        $this->assertMismatchDescription(
            '[HamcrestCoreSampleBaseClass] <good>',
            anInstanceOf('HamcrestCoreSampleSubClass'),
            $this->_baseClassInstance
        );
    }
}