Unit testing models and mocking

I have a model method that I've written a unit test, but the method under test calls another method on the same model that I would like to mock.  It seems that if I mock the method on the model, fixture information gets lost (that is, I think the datasource gets reset).

The test is as follows:

public function testUpdateVerification() {

$this->EmailVerification = $this->getMock('EmailVerification', array('verifyEmail'));

$record = $this->EmailVerification->read(null, 2);

$this->assertEquals(2, $record['EmailVerification']['id']);

$this->assertNull($record['EmailVerification']['order_ref']);

$this->EmailVerification->expects($this->once())

->method('verifyEmail')

->will($this->returnValue(true));

$this->EmailVerification->updateVerification('verification@test.com', 2, 3);

$record = $this->EmailVerification->read(null, 2);

$this->assertEquals(3, $record['EmailVerification']['order_ref']);

}

The method under test is :

public function updateVerification($email, $emailVerificationRef, $orderNumber) {

$emailVerification = $this->find('first', array(

'conditions' => array(

'email' => $email,

'id' => $emailVerificationRef

)

));

if ($emailVerification) {

// record exists, so update the order number

$this->id = $emailVerificationRef;

if ($this->saveField('order_ref', $orderNumber)) {

return $this->verifyEmail($emailVerification['EmailVerification']['verification_ref']);

}

return false;

} else {

// no record exists, so send verification

return $this->sendVerification($email, $orderNumber);

}

}

As you can see, I just was to ensure that $this->verifyEmail() is called.  I've got another test that looks after verifyEmail() specifically.

Has anyone had any experience in mocking a model and ensuring that the fixtures get loaded, and assigned datasource stays in intact (or is reassigned to the mocked object)?

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