ConnectionException example

class LdapUserProviderTest extends TestCase
{
    public function testLoadUserByIdentifierFailsIfCantConnectToLdap()
    {
        $this->expectException(ConnectionException::class);

        $ldap = $this->createMock(LdapInterface::class);
        $ldap
            ->expects($this->once())
            ->method('bind')
            ->willThrowException(new ConnectionException())
        ;

        $provider = new LdapUserProvider($ldap, 'ou=MyBusiness,dc=symfony,dc=com');
        $provider->loadUserByIdentifier('foo');
    }

    public function testLoadUserByIdentifierFailsIfNoLdapEntries()
    {
        $this->expectException(UserNotFoundException::class);

        $result = $this->createMock(CollectionInterface::class);
        

if (false === @ldap_bind($this->connection, $dn, $password)) {
            $error = ldap_error($this->connection);
            switch (ldap_errno($this->connection)) {
                case self::LDAP_INVALID_CREDENTIALS:
                    throw new InvalidCredentialsException($error);
                case self::LDAP_TIMEOUT:
                    throw new ConnectionTimeoutException($error);
                case self::LDAP_ALREADY_EXISTS:
                    throw new AlreadyExistsException($error);
            }
            throw new ConnectionException($error);
        }

        $this->bound = true;
    }

    /** * @internal */
    public function getResource(): ?LDAPConnection
    {
        return $this->connection;
    }