public function createSigningHashShouldReturnTheSignerResult()
{
$signingHash = gmp_init(1, 10);
$generatorPoint = $this->createMock(GeneratorPoint::class);
$this->nistCurve->expects($this->once())->method('generator256')->willReturn($generatorPoint);
$this->signer->expects($this->once())->method('hashData')->with($generatorPoint, 'sha256', 'testing')->willReturn($signingHash);
$adapter = $this->createAdapter();
self::assertSame($signingHash, $adapter->createSigningHash('testing', 'sha256'));
}