Neos\Cache\Tests\Unit\Frontend\VariableFrontendTest::getByTagRejectsInvalidTags PHP Method

    public function getByTagRejectsInvalidTags()
    {
        $backend = $this->createMock(TaggableBackendInterface::class);
        $backend->expects($this->never())->method('findIdentifiersByTag');
        $cache = new VariableFrontend('VariableFrontend', $backend);
        $cache->getByTag('SomeInvalid\\Tag');
    }