Nqxcode\LuceneSearch\Model\Config::primaryKeyPair PHP Method

    public function primaryKeyPair(Model $model)
    {
        $c = $this->config($model);
        return ['primary_key', $model->{$c['primary_key']}];
    }

 public function testModels()
 {
     // Asserts for product model
     list($cKey, $cValue) = $this->config->classUidPair(new Product());
     list($pKey, $pValue) = $this->config->primaryKeyPair(new Product());
     $this->productRepoMock->shouldReceive('searchableIds')->andReturn([1, 2, 3])->byDefault();
     $hitMock = m::mock('ZendSearch\\Lucene\\Search\\QueryHit');
     $hitMock->{$cKey} = $cValue;
     $hitMock->{$pKey} = 1;
     $this->assertEquals([1], $this->config->models([$hitMock])->lists('id')->all());
     $hitMock->{$pKey} = 5;
     $this->assertEquals([], $this->config->models([$hitMock])->lists('id')->all());
     // Asserts for dummy model
     list($cKey, $cValue) = $this->config->classUidPair(new DummyModel());
     list($pKey, $pValue) = $this->config->primaryKeyPair(new DummyModel());
     $builderMock = m::mock(Builder::class);
     $this->dummyMock->shouldReceive('newQuery')->andReturn($builderMock);
     $builderMock->shouldReceive('lists')->with('pk')->andReturn([1, 2, 3])->byDefault();
     $hitMock = m::mock('ZendSearch\\Lucene\\Search\\QueryHit');
     $hitMock->{$cKey} = $cValue;
     $hitMock->{$pKey} = 3;
     $this->assertEquals([3], $this->config->models([$hitMock])->lists('pk')->all());
     $hitMock->{$pKey} = 10;
     $this->assertEquals([], $this->config->models([$hitMock])->lists('pk')->all());
 }