public function testIsUsingProvider()
 {
     // should not be using provider before setting it
     $this->assertFalse($this->baseLdapUserProvider->isUsingProvider());
     $provider = Mockery::mock('Illuminate\\Contracts\\Auth\\UserProvider');
     $this->baseLdapUserProvider->setProvider($provider);
     // after setting provider, should show that one is being used
     $this->assertTrue($this->baseLdapUserProvider->isUsingProvider());
 }