class PrivateKeyTest

class PrivateKeyTest extends UnitTestCase {
    
    /**
     * The state mock class.
     *
     * @var \Drupal\Core\State\StateInterface|\PHPUnit\Framework\MockObject\MockObject
     */
    protected $state;
    
    /**
     * The private key service mock.
     *
     * @var \Drupal\Core\PrivateKey
     */
    protected $privateKey;
    
    /**
     * The random key to use in tests.
     *
     * @var string
     */
    protected $key;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->key = Crypt::randomBytesBase64(55);
        $this->state = $this->createMock('Drupal\\Core\\State\\StateInterface');
        $this->privateKey = new PrivateKey($this->state);
    }
    
    /**
     * Tests PrivateKey::get().
     */
    public function testGet() {
        $this->state
            ->expects($this->once())
            ->method('get')
            ->with('system.private_key')
            ->willReturn($this->key);
        $this->assertEquals($this->key, $this->privateKey
            ->get());
    }
    
    /**
     * Tests PrivateKey::get() with no private key from state.
     */
    public function testGetNoState() {
        $this->assertIsString($this->privateKey
            ->get());
    }
    
    /**
     * Tests PrivateKey::setPrivateKey().
     */
    public function testSet() {
        $random_name = $this->randomMachineName();
        $this->state
            ->expects($this->once())
            ->method('set')
            ->with('system.private_key', $random_name)
            ->willReturn(TRUE);
        $this->privateKey
            ->set($random_name);
    }

}