/**
  * testGetCredentialStrategyIsNullByDefault
  *
  * Ensure that by default the credential strategy is NULL.
  *
  * @covers ArpAuth\Authentication\Adapter\AdapterChain::getCredentialStrategy
  * @test
  */
 public function testGetCredentialStrategyIsNullByDefault()
 {
     $adapterChain = new AdapterChain([]);
     $this->assertEquals(null, $adapterChain->getCredentialStrategy());
 }