VariableFrontendTest.php

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<?php
namespace TYPO3\CMS\Core\Tests\Unit\Cache\Frontend;

class VariableFrontendTest extends \TYPO3\CMS\Core\Tests\UnitTestCase {

    public function setChecksIfTheIdentifierIsValid() {
        $cache = $this->getMock('TYPO3\\CMS\\Core\\Cache\\Frontend\\StringFrontend', array('isValidEntryIdentifier'), array(), '', FALSE);
        $cache->expects($this->once())->method('isValidEntryIdentifier')->with('foo')->will($this->returnValue(FALSE));
        $cache->set('foo', 'bar');
    }

    public function setPassesSerializedStringToBackend() {
        $theString = 'Just some value';
        $backend = $this->getMock('TYPO3\\CMS\\Core\\Cache\\Backend\\AbstractBackend', array('get', 'set', 'has', 'remove', 'findIdentifiersByTag', 'flush', 'flushByTag', 'collectGarbage'), array(), '', FALSE);
        $backend->expects($this->once())->method('set')->with($this->equalTo('VariableCacheTest'), $this->equalTo(serialize($theString)));

        $cache = new \TYPO3\CMS\Core\Cache\Frontend\VariableFrontend('VariableFrontend', $backend);
        $cache->set('VariableCacheTest', $theString);
    }

    public function setPassesSerializedArrayToBackend() {
        $theArray = array('Just some value', 'and another one.');
        $backend = $this->getMock('TYPO3\\CMS\\Core\\Cache\\Backend\\AbstractBackend', array('get', 'set', 'has', 'remove', 'findIdentifiersByTag', 'flush', 'flushByTag', 'collectGarbage'), array(), '', FALSE);
        $backend->expects($this->once())->method('set')->with($this->equalTo('VariableCacheTest'), $this->equalTo(serialize($theArray)));

        $cache = new \TYPO3\CMS\Core\Cache\Frontend\VariableFrontend('VariableFrontend', $backend);
        $cache->set('VariableCacheTest', $theArray);
    }

    public function setPassesLifetimeToBackend() {
        $theString = 'Just some value';
        $theLifetime = 1234;
        $backend = $this->getMock('TYPO3\\CMS\\Core\\Cache\\Backend\\AbstractBackend', array('get', 'set', 'has', 'remove', 'findIdentifiersByTag', 'flush', 'flushByTag', 'collectGarbage'), array(), '', FALSE);
        $backend->expects($this->once())->method('set')->with($this->equalTo('VariableCacheTest'), $this->equalTo(serialize($theString)), $this->equalTo(array()), $this->equalTo($theLifetime));

        $cache = new \TYPO3\CMS\Core\Cache\Frontend\VariableFrontend('VariableFrontend', $backend);
        $cache->set('VariableCacheTest', $theString, array(), $theLifetime);
    }

    public function setUsesIgBinarySerializeIfAvailable() {
        if (!extension_loaded('igbinary')) {
            $this->markTestSkipped('Cannot test igbinary support, because igbinary is not installed.');
        }

        $theString = 'Just some value';
        $backend = $this->getMock('TYPO3\\CMS\\Core\\Cache\\Backend\\AbstractBackend', array('get', 'set', 'has', 'remove', 'findIdentifiersByTag', 'flush', 'flushByTag', 'collectGarbage'), array(), '', FALSE);
        $backend->expects($this->once())->method('set')->with($this->equalTo('VariableCacheTest'), $this->equalTo(igbinary_serialize($theString)));

        $cache = new \TYPO3\CMS\Core\Cache\Frontend\VariableFrontend('VariableFrontend', $backend);
        $cache->initializeObject();
        $cache->set('VariableCacheTest', $theString);
    }

    public function getFetchesStringValueFromBackend() {
        $backend = $this->getMock('TYPO3\\CMS\\Core\\Cache\\Backend\\AbstractBackend', array('get', 'set', 'has', 'remove', 'findIdentifiersByTag', 'flush', 'flushByTag', 'collectGarbage'), array(), '', FALSE);
        $backend->expects($this->once())->method('get')->will($this->returnValue(serialize('Just some value')));

        $cache = new \TYPO3\CMS\Core\Cache\Frontend\VariableFrontend('VariableFrontend', $backend);
        $this->assertEquals('Just some value', $cache->get('VariableCacheTest'), 'The returned value was not the expected string.');
    }

    public function getFetchesArrayValueFromBackend() {
        $theArray = array('Just some value', 'and another one.');
        $backend = $this->getMock('TYPO3\\CMS\\Core\\Cache\\Backend\\AbstractBackend', array('get', 'set', 'has', 'remove', 'findIdentifiersByTag', 'flush', 'flushByTag', 'collectGarbage'), array(), '', FALSE);
        $backend->expects($this->once())->method('get')->will($this->returnValue(serialize($theArray)));

        $cache = new \TYPO3\CMS\Core\Cache\Frontend\VariableFrontend('VariableFrontend', $backend);
        $this->assertEquals($theArray, $cache->get('VariableCacheTest'), 'The returned value was not the expected unserialized array.');
    }

    public function getFetchesFalseBooleanValueFromBackend() {
        $backend = $this->getMock('TYPO3\\CMS\\Core\\Cache\\Backend\\AbstractBackend', array('get', 'set', 'has', 'remove', 'findIdentifiersByTag', 'flush', 'flushByTag', 'collectGarbage'), array(), '', FALSE);
        $backend->expects($this->once())->method('get')->will($this->returnValue(serialize(FALSE)));

        $cache = new \TYPO3\CMS\Core\Cache\Frontend\VariableFrontend('VariableFrontend', $backend);
        $this->assertFalse($cache->get('VariableCacheTest'), 'The returned value was not the FALSE.');
    }

    public function getUsesIgBinaryIfAvailable() {
        if (!extension_loaded('igbinary')) {
            $this->markTestSkipped('Cannot test igbinary support, because igbinary is not installed.');
        }

        $theArray = array('Just some value', 'and another one.');
        $backend = $this->getMock('TYPO3\\CMS\\Core\\Cache\\Backend\\AbstractBackend', array('get', 'set', 'has', 'remove', 'findIdentifiersByTag', 'flush', 'flushByTag', 'collectGarbage'), array(), '', FALSE);
        $backend->expects($this->once())->method('get')->will($this->returnValue(igbinary_serialize($theArray)));

        $cache = new \TYPO3\CMS\Core\Cache\Frontend\VariableFrontend('VariableFrontend', $backend);
        $cache->initializeObject();

        $this->assertEquals($theArray, $cache->get('VariableCacheTest'), 'The returned value was not the expected unserialized array.');
    }

    public function hasReturnsResultFromBackend() {
        $backend = $this->getMock('TYPO3\\CMS\\Core\\Cache\\Backend\\AbstractBackend', array('get', 'set', 'has', 'remove', 'findIdentifiersByTag', 'flush', 'flushByTag', 'collectGarbage'), array(), '', FALSE);
        $backend->expects($this->once())->method('has')->with($this->equalTo('VariableCacheTest'))->will($this->returnValue(TRUE));

        $cache = new \TYPO3\CMS\Core\Cache\Frontend\VariableFrontend('VariableFrontend', $backend);
        $this->assertTrue($cache->has('VariableCacheTest'), 'has() did not return TRUE.');
    }

    public function removeCallsBackend() {
        $cacheIdentifier = 'someCacheIdentifier';
        $backend = $this->getMock('TYPO3\\CMS\\Core\\Cache\\Backend\\AbstractBackend', array('get', 'set', 'has', 'remove', 'findIdentifiersByTag', 'flush', 'flushByTag', 'collectGarbage'), array(), '', FALSE);

        $backend->expects($this->once())->method('remove')->with($this->equalTo($cacheIdentifier))->will($this->returnValue(TRUE));

        $cache = new \TYPO3\CMS\Core\Cache\Frontend\VariableFrontend('VariableFrontend', $backend);
        $this->assertTrue($cache->remove($cacheIdentifier), 'remove() did not return TRUE');
    }

    public function getByTagRejectsInvalidTags() {
        $backend = $this->getMock('TYPO3\\CMS\\Core\\Cache\\Backend\\BackendInterface', array(), array(), '', FALSE);
        $backend->expects($this->never())->method('getByTag');

        $cache = new \TYPO3\CMS\Core\Cache\Frontend\VariableFrontend('VariableFrontend', $backend);
        $cache->getByTag('SomeInvalid\Tag');
    }

    public function getByTagCallsBackend() {
        $tag = 'sometag';
        $identifiers = array('one', 'two');
        $entries = array('one value', 'two value');
        $backend = $this->getMock('TYPO3\\CMS\\Core\\Cache\\Backend\\AbstractBackend', array('get', 'set', 'has', 'remove', 'findIdentifiersByTag', 'flush', 'flushByTag', 'collectGarbage'), array(), '', FALSE);

        $backend->expects($this->once())->method('findIdentifiersByTag')->with($this->equalTo($tag))->will($this->returnValue($identifiers));
        $backend->expects($this->exactly(2))->method('get')->will($this->onConsecutiveCalls(serialize('one value'), serialize('two value')));

        $cache = new \TYPO3\CMS\Core\Cache\Frontend\VariableFrontend('VariableFrontend', $backend);
        $this->assertEquals($entries, $cache->getByTag($tag), 'Did not receive the expected entries');
    }

    public function getByTagUsesIgBinaryIfAvailable() {
        if (!extension_loaded('igbinary')) {
            $this->markTestSkipped('Cannot test igbinary support, because igbinary is not installed.');
        }

        $tag = 'sometag';
        $identifiers = array('one', 'two');
        $entries = array('one value', 'two value');
        $backend = $this->getMock('TYPO3\\CMS\\Core\\Cache\\Backend\\AbstractBackend', array('get', 'set', 'has', 'remove', 'findIdentifiersByTag', 'flush', 'flushByTag', 'collectGarbage'), array(), '', FALSE);

        $backend->expects($this->once())->method('findIdentifiersByTag')->with($this->equalTo($tag))->will($this->returnValue($identifiers));
        $backend->expects($this->exactly(2))->method('get')->will($this->onConsecutiveCalls(igbinary_serialize('one value'), igbinary_serialize('two value')));

        $cache = new \TYPO3\CMS\Core\Cache\Frontend\VariableFrontend('VariableFrontend', $backend);
        $cache->initializeObject();
        $this->assertEquals($entries, $cache->getByTag($tag), 'Did not receive the expected entries');
    }
}