diff --git a/tests/unit/data/base/Speaker.php b/tests/unit/data/base/Speaker.php
new file mode 100644
index 0000000..240b691
--- /dev/null
+++ b/tests/unit/data/base/Speaker.php
@@ -0,0 +1,40 @@
+<?php
+namespace yiiunit\data\base;
+
+/**
+ * Speaker
+ */
+use yii\base\Model;
+
+class Speaker extends Model
+{
+	public $firstName;
+	public $lastName;
+
+	public $customLabel;
+	public $underscore_style;
+
+	protected $protectedProperty;
+	private $_privateProperty;
+
+	public function attributeLabels()
+	{
+		return array(
+			'customLabel' => 'This is the custom label',
+		);
+	}
+
+	public function rules()
+	{
+		return array(
+
+		);
+	}
+
+	public function scenarios()
+	{
+		return array(
+			'test' => array('firstName', 'lastName', '!underscore_style'),
+		);
+	}
+}
diff --git a/tests/unit/framework/base/ModelTest.php b/tests/unit/framework/base/ModelTest.php
new file mode 100644
index 0000000..bd10f45
--- /dev/null
+++ b/tests/unit/framework/base/ModelTest.php
@@ -0,0 +1,172 @@
+<?php
+
+namespace yiiunit\framework\base;
+use yiiunit\TestCase;
+use yiiunit\data\base\Speaker;
+
+/**
+ * ModelTest
+ */
+class ModelTest extends TestCase
+{
+	public function testGetAttributeLalel()
+	{
+		$speaker = new Speaker();
+		$this->assertEquals('First Name', $speaker->getAttributeLabel('firstName'));
+		$this->assertEquals('This is the custom label', $speaker->getAttributeLabel('customLabel'));
+		$this->assertEquals('Underscore Style', $speaker->getAttributeLabel('underscore_style'));
+	}
+
+	public function testGetAttributes()
+	{
+		$speaker = new Speaker();
+		$speaker->firstName = 'Qiang';
+		$speaker->lastName = 'Xue';
+
+		$this->assertEquals(array(
+			'firstName' => 'Qiang',
+			'lastName' => 'Xue',
+			'customLabel' => null,
+			'underscore_style' => null,
+		), $speaker->getAttributes());
+
+		$this->assertEquals(array(
+			'firstName' => 'Qiang',
+			'lastName' => 'Xue',
+		), $speaker->getAttributes(array('firstName', 'lastName')));
+
+		$this->assertEquals(array(
+			'firstName' => 'Qiang',
+			'lastName' => 'Xue',
+		), $speaker->getAttributes(null, array('customLabel', 'underscore_style')));
+
+		$this->assertEquals(array(
+			'firstName' => 'Qiang',
+		), $speaker->getAttributes(array('firstName', 'lastName'), array('lastName', 'customLabel', 'underscore_style')));
+	}
+
+	public function testSetAttributes()
+	{
+		// by default mass assignment doesn't work at all
+		$speaker = new Speaker();
+		$speaker->setAttributes(array('firstName' => 'Qiang', 'underscore_style' => 'test'));
+		$this->assertNull($speaker->firstName);
+		$this->assertNull($speaker->underscore_style);
+
+		// in the test scenario
+		$speaker = new Speaker();
+		$speaker->setScenario('test');
+		$speaker->setAttributes(array('firstName' => 'Qiang', 'underscore_style' => 'test'));
+		$this->assertNull($speaker->underscore_style);
+		$this->assertEquals('Qiang', $speaker->firstName);
+
+		$speaker->setAttributes(array('firstName' => 'Qiang', 'underscore_style' => 'test'), false);
+		$this->assertEquals('test', $speaker->underscore_style);
+		$this->assertEquals('Qiang', $speaker->firstName);
+	}
+
+	public function testActiveAttributes()
+	{
+		// by default mass assignment doesn't work at all
+		$speaker = new Speaker();
+		$this->assertEmpty($speaker->activeAttributes());
+
+		$speaker = new Speaker();
+		$speaker->setScenario('test');
+		$this->assertEquals(array('firstName', 'lastName', 'underscore_style'), $speaker->activeAttributes());
+	}
+
+	public function testIsAttributeSafe()
+	{
+		// by default mass assignment doesn't work at all
+		$speaker = new Speaker();
+		$this->assertFalse($speaker->isAttributeSafe('firstName'));
+
+		$speaker = new Speaker();
+		$speaker->setScenario('test');
+		$this->assertTrue($speaker->isAttributeSafe('firstName'));
+
+	}
+
+	public function testErrors()
+	{
+		$speaker = new Speaker();
+
+		$this->assertEmpty($speaker->getErrors());
+		$this->assertEmpty($speaker->getErrors('firstName'));
+		$this->assertEmpty($speaker->getFirstErrors());
+
+		$this->assertFalse($speaker->hasErrors());
+		$this->assertFalse($speaker->hasErrors('firstName'));
+
+		$speaker->addError('firstName', 'Something is wrong!');
+		$this->assertEquals(array('firstName' => array('Something is wrong!')), $speaker->getErrors());
+		$this->assertEquals(array('Something is wrong!'), $speaker->getErrors('firstName'));
+
+		$speaker->addError('firstName', 'Totally wrong!');
+		$this->assertEquals(array('firstName' => array('Something is wrong!', 'Totally wrong!')), $speaker->getErrors());
+		$this->assertEquals(array('Something is wrong!', 'Totally wrong!'), $speaker->getErrors('firstName'));
+
+		$this->assertTrue($speaker->hasErrors());
+		$this->assertTrue($speaker->hasErrors('firstName'));
+		$this->assertFalse($speaker->hasErrors('lastName'));
+
+		$this->assertEquals(array('Something is wrong!'), $speaker->getFirstErrors());
+		$this->assertEquals('Something is wrong!', $speaker->getFirstError('firstName'));
+		$this->assertNull($speaker->getFirstError('lastName'));
+
+		$speaker->addError('lastName', 'Another one!');
+		$this->assertEquals(array(
+			'firstName' => array(
+				'Something is wrong!',
+				'Totally wrong!',
+			),
+			'lastName' => array('Another one!'),
+		), $speaker->getErrors());
+
+		$speaker->clearErrors('firstName');
+		$this->assertEquals(array(
+			'lastName' => array('Another one!'),
+		), $speaker->getErrors());
+
+		$speaker->clearErrors();
+		$this->assertEmpty($speaker->getErrors());
+		$this->assertFalse($speaker->hasErrors());
+	}
+
+	public function testArraySyntax()
+	{
+		$speaker = new Speaker();
+
+		// get
+		$this->assertNull($speaker['firstName']);
+
+		// isset
+		$this->assertFalse(isset($speaker['firstName']));
+
+		// set
+		$speaker['firstName'] = 'Qiang';
+
+		$this->assertEquals('Qiang', $speaker['firstName']);
+		$this->assertTrue(isset($speaker['firstName']));
+
+		// iteration
+		$attributes = array();
+		foreach($speaker as $key => $attribute) {
+			$attributes[$key] = $attribute;
+		}
+		$this->assertEquals(array(
+			'firstName' => 'Qiang',
+			'lastName' => null,
+			'customLabel' => null,
+			'underscore_style' => null,
+		), $attributes);
+
+		// unset
+		unset($speaker['firstName']);
+
+		// exception isn't expected here
+		$this->assertNull($speaker['firstName']);
+		$this->assertFalse(isset($speaker['firstName']));
+	}
+}