public function testQueryIsBuilt()
{
$query = m::mock(Builder::class);
$tag = new Tag(['id' => 1]);
$filter = new Filter($tag);
$query->shouldReceive('leftJoin')->with('pages_tags as pt_without-0', m::on(function () {
return true;
}))->andReturnSelf()->shouldReceive('on')->with('pages.id', '=', 'pt_without-0.page_id')->andReturnSelf()->shouldReceive('on')->with('pt_without-0.tag_id', '=', $tag->getId())->andReturnSelf()->shouldReceive('whereNull')->with('pt_without-0.page_id');
$filter->build($query);
}
