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<?php
namespace HamcrestCollection;

class IsTraversableWithSizeTest extends HamcrestAbstractMatcherTest
{

    protected function createMatcher()
    {
        return HamcrestCollectionIsTraversableWithSize::traversableWithSize(
            equalTo(2)
        );
    }

    public function testMatchesWhenSizeIsCorrect()
    {
        $this->assertMatches(
            traversableWithSize(equalTo(3)),
            new ArrayObject(array(1, 2, 3)),
            'correct size'
        );
    }

    public function testDoesNotMatchWhenSizeIsIncorrect()
    {
        $this->assertDoesNotMatch(
            traversableWithSize(equalTo(2)),
            new ArrayObject(array(1, 2, 3)),
            'incorrect size'
        );
    }

    public function testDoesNotMatchNull()
    {
        $this->assertDoesNotMatch(
            traversableWithSize(3),
            null,
            'should not match null'
        );
    }

    public function testProvidesConvenientShortcutForTraversableWithSizeEqualTo()
    {
        $this->assertMatches(
            traversableWithSize(3),
            new ArrayObject(array(1, 2, 3)),
            'correct size'
        );
    }

    public function testHasAReadableDescription()
    {
        $this->assertDescription(
            'a traversable with size <3>',
            traversableWithSize(equalTo(3))
        );
    }
}