Initial commit, project structure and domain models

tests/api/MicCheck.Api.Tests.Unit/Auth/TokenServiceTests.cs

@@ -0,0 +1,67 @@
+using System.IdentityModel.Tokens.Jwt;
+using Microsoft.Extensions.Configuration;
+using MicCheck.Api.Auth;
+using NUnit.Framework;
+
+namespace MicCheck.Api.Tests.Unit.Auth;
+
+[TestFixture]
+public class TokenServiceTests
+{
+    private IConfiguration _configuration = null!;
+    private TokenService _tokenService = null!;
+
+    [SetUp]
+    public void SetUp()
+    {
+        _configuration = new ConfigurationBuilder()
+            .AddInMemoryCollection(new Dictionary<string, string?>
+            {
+                ["Jwt:SecretKey"] = "test-secret-key-that-is-long-enough-32c",
+                ["Jwt:Issuer"] = "MicCheck",
+                ["Jwt:Audience"] = "MicCheck",
+                ["Jwt:ExpiryMinutes"] = "60",
+            })
+            .Build();
+
+        _tokenService = new TokenService(_configuration);
+    }
+
+    [Test]
+    public void WhenAUsernameIsProvided_ThenATokenIsReturned()
+    {
+        var result = _tokenService.GenerateToken("testuser");
+
+        Assert.That(result.Token, Is.Not.Null.And.Not.Empty);
+    }
+
+    [Test]
+    public void WhenATokenIsGenerated_ThenItContainsTheUsernameAsSubjectClaim()
+    {
+        var result = _tokenService.GenerateToken("testuser");
+
+        var handler = new JwtSecurityTokenHandler();
+        var jwt = handler.ReadJwtToken(result.Token);
+
+        Assert.That(jwt.Subject, Is.EqualTo("testuser"));
+    }
+
+    [Test]
+    public void WhenATokenIsGenerated_ThenItHasAFutureExpiry()
+    {
+        var result = _tokenService.GenerateToken("testuser");
+
+        Assert.That(result.ExpiresAt, Is.GreaterThan(DateTime.UtcNow));
+    }
+
+    [Test]
+    public void WhenATokenIsGenerated_ThenItHasTheConfiguredIssuer()
+    {
+        var result = _tokenService.GenerateToken("testuser");
+
+        var handler = new JwtSecurityTokenHandler();
+        var jwt = handler.ReadJwtToken(result.Token);
+
+        Assert.That(jwt.Issuer, Is.EqualTo("MicCheck"));
+    }
+}