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<?php
namespace HamcrestCollection;

use HamcrestAbstractMatcherTest;

class IsEmptyTraversableTest extends AbstractMatcherTest
{

    protected function createMatcher()
    {
        return IsEmptyTraversable::emptyTraversable();
    }

    public function testEmptyMatcherMatchesWhenEmpty()
    {
        $this->assertMatches(
            emptyTraversable(),
            new ArrayObject(array()),
            'an empty traversable'
        );
    }

    public function testEmptyMatcherDoesNotMatchWhenNotEmpty()
    {
        $this->assertDoesNotMatch(
            emptyTraversable(),
            new ArrayObject(array(1, 2, 3)),
            'a non-empty traversable'
        );
    }

    public function testEmptyMatcherDoesNotMatchNull()
    {
        $this->assertDoesNotMatch(
            emptyTraversable(),
            null,
            'should not match null'
        );
    }

    public function testEmptyMatcherHasAReadableDescription()
    {
        $this->assertDescription('an empty traversable', emptyTraversable());
    }

    public function testNonEmptyDoesNotMatchNull()
    {
        $this->assertDoesNotMatch(
            nonEmptyTraversable(),
            null,
            'should not match null'
        );
    }

    public function testNonEmptyDoesNotMatchWhenEmpty()
    {
        $this->assertDoesNotMatch(
            nonEmptyTraversable(),
            new ArrayObject(array()),
            'an empty traversable'
        );
    }

    public function testNonEmptyMatchesWhenNotEmpty()
    {
        $this->assertMatches(
            nonEmptyTraversable(),
            new ArrayObject(array(1, 2, 3)),
            'a non-empty traversable'
        );
    }

    public function testNonEmptyNonEmptyMatcherHasAReadableDescription()
    {
        $this->assertDescription('a non-empty traversable', nonEmptyTraversable());
    }
}