php-xapi / xapi-model

        );

    }

    public function testWithAuthority()

    {

        $statement = $this->createMinimalStatement();

        $authority = $this->createAgent();

        $statementWithAuthority = $statement->withAuthority($authority);

        $this->assertFalse($statement->equals($statementWithAuthority));

        $this->assertNull($statement->getAuthority());

        $this->assertSame($statement->getId(), $statementWithAuthority->getId());

        $this->assertTrue($statement->getActor()->equals($statementWithAuthority->getActor()));

        $this->assertTrue($statement->getVerb()->equals($statementWithAuthority->getVerb()));

        $this->assertTrue($statement->getObject()->equals($statementWithAuthority->getObject()));

        $this->assertTrue($authority->equals($statementWithAuthority->getAuthority()));

    }

    public function testWithAuthorityReplacesExistingAuthority()

    {

        $this->assertTrue($authority->equals($statementWithAuthority->getAuthority()));

    }

    public function testWithAuthorityReplacesExistingAuthority()

    {

        $statement = $this->createStatementWithGroupAuthority();

        $agentAuthority = $this->createAgent();

        $statementWithAuthority = $statement->withAuthority($agentAuthority);

        $this->assertFalse($statement->equals($statementWithAuthority));

        $this->assertSame($statement->getId(), $statementWithAuthority->getId());

        $this->assertTrue($statement->getActor()->equals($statementWithAuthority->getActor()));

        $this->assertTrue($statement->getVerb()->equals($statementWithAuthority->getVerb()));

        $this->assertTrue($statement->getObject()->equals($statementWithAuthority->getObject()));

        $this->assertTrue($agentAuthority->equals($statementWithAuthority->getAuthority()));

        $this->assertFalse($statement->getAuthority()->equals($statementWithAuthority->getAuthority()));

    }

    private function createMinimalStatement()

    {