[FIXED] Cakephp unit test how I will write a test method for test buildRules

Issue

I am trying to write a test case for below codes

public function buildRules(RulesChecker $rules)
{
    $rules->add($rules->isUnique(['email']));

    return $rules;
}

I already created AdminUsersFixture and AdminUsersTableTest. In AdminUsersTableTest I already load AdminUsersFixture.

I am able to test default validation by below method

public function testValidationDefault()
{
        $data = [
            'name' => 'lorem',
            'email' => 'jone@test.com',
            'password' => 'Lorem_ipsum',
            'status' => 1,
            'created' => date('Y-m-d H:i:s'),
            'modified' => date('Y-m-d H:i:s'),
        ];
        $adminUsers = $this->AdminUsers->newEntity($data);
        $this->assertEmpty($adminUsers->getErrors());
}

Now how I will write a test case method to test cakephp buildRules ?

Solution

Validation rules are applied when patching/creating an entity, they are ment to validate request data. Application rules are being applied when saving entities, they are ment to validate data/application integrity.

So you would save an entity (it must not have any validation errors, otherwise the saving operation will bail out before applying application rules), and then check for possible errors on the entity.

For example:

public function testApplicationRulesEmailsMustBeUnique()
{
    $adminUser = $this->AdminUsers->newEmptyEntity();
    $adminUser->email = 'already@existing.email';
    
    $this->assertFalse($this->AdminUsers->save($adminUser));
    
    $this->assertSame(
        ['_isUnique' => 'This value is already in use'],
        $adminUser->getError('email')
    );
}

public function testSavingSucceeds()
{
    $data = [
        'name' => 'lorem',
        'email' => 'jone@test.com',
        'password' => 'Lorem_ipsum',
        'status' => 1,
        'created' => date('Y-m-d H:i:s'),
        'modified' => date('Y-m-d H:i:s'),
    ];
    $adminUser = $this->AdminUsers->newEntity($data);
    
    $this->assertInstanceOf(
        \Cake\Datasource\EntityInterface::class, 
        $this->AdminUsers->save($adminUser)
    );
    $this->assertEmpty($adminUser->getErrors());
    
    // ...
}

Answered By - ndm