mockApplication(); (new migrations\CreateSubjectTable)->up(); (new Subject())->save(); (new Subject())->save(); (new Subject())->save(); $subjects = ArrayHelper::map( Subject::find()->all(), function($s) { return $s->getAttributes(); } ); $this->assertEquals(3, sizeof($subjects)); $this->assertContains(['id' => 1], $subjects); $this->assertContains(['id' => 2], $subjects); $this->assertContains(['id' => 3], $subjects); } }