using Tau.Acuvim.Portal.Services;

namespace Tau.Acuvim.Portal.Tests;

public class CustomerTokenTests
{
    [Fact]
    public void GenerateToken_Is64HexCharsLowercase()
    {
        var token = CustomerService.GenerateToken();
        Assert.Equal(64, token.Length);
        Assert.Matches("^[0-9a-f]{64}$", token);
    }

    [Fact]
    public void GenerateToken_IsUniqueAcrossManyCalls()
    {
        var tokens = Enumerable.Range(0, 1000).Select(_ => CustomerService.GenerateToken()).ToHashSet();
        Assert.Equal(1000, tokens.Count);
    }

    [Fact]
    public void HashToken_IsDeterministic()
    {
        var token = "abcd1234";
        Assert.Equal(CustomerService.HashToken(token), CustomerService.HashToken(token));
    }

    [Fact]
    public void HashToken_DiffersForDifferentInputs()
    {
        Assert.NotEqual(CustomerService.HashToken("abc"), CustomerService.HashToken("abd"));
    }

    [Fact]
    public void HashToken_Is64HexCharsLowercase()
    {
        var hash = CustomerService.HashToken("anything");
        Assert.Equal(64, hash.Length);
        Assert.Matches("^[0-9a-f]{64}$", hash);
    }
}