public function testModelPeek()
 {
     $rdr = new MockReader();
     $model = new MgFeatureReaderModel(new MockFormatterSet(), $rdr, -1, 0);
     $i = 0;
     while ($model->Peek()) {
         $feat = $model->Current();
         $this->assertEquals($i, $feat->ID);
         $i++;
     }
     $j = 0;
     while ($model->Next()) {
         $feat = $model->Current();
         $this->assertEquals($j, $feat->ID);
         $j++;
     }
     $model->Done();
     $this->assertTrue($rdr->WasClosed());
     $this->assertEquals(5, $i);
     $this->assertEquals(5, $j);
 }