public void GetNameIdentifier_WhenCalledAndPrincipalHasNameIdentifierClaim_ReturnsNameIdentifier()
{
string nameIdentifier = _fixture.Create <string>();
IPrincipal principal = CreateClaimsPrincipal(new[] { new Claim(_fixture.Create <string>(), _fixture.Create <string>()), ClaimHelper.CreateNameIdentifierClaim(nameIdentifier) });
IClaimResolver sut = CreateSut(principal);
string result = sut.GetNameIdentifier();
Assert.That(result, Is.EqualTo(nameIdentifier));
}