Lcobucci\JWT\BuilderTest::setHeaderMustRaiseExceptionWhenTokenHasBeenSigned PHP Method

    public function setHeaderMustRaiseExceptionWhenTokenHasBeenSigned()
    {
        $signer = $this->createMock(Signer::class);
        $signature = $this->createMock(Signature::class);
        $signer->expects($this->any())->method('sign')->willReturn($signature);
        $builder = $this->createBuilder();
        $builder->sign($signer, new Key('test'));
        $builder->withHeader('test', 123);
    }