test: add unit tests for JwtTokenGenerator to validate token generation logic

Author: dagweg

Tests/UnitTests/Ecommerce.Infrastructure.UnitTests/Services/Authentication/JwtTokenGeneratorTests.cs

@@ -0,0 +1,99 @@
+using Ecommerce.Application.Common.Interfaces.Providers.Date;
+using Ecommerce.Infrastructure.Services.Authentication;
+using FluentAssertions;
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Options;
+using Moq;
+
+namespace Ecommerce.UnitTests.Infrastructure.Services;
+
+public class JwtTokenGeneratorTests
+{
+  private JwtTokenGenerator _jwtTokenGenerator;
+
+  private Mock<IOptions<JwtSettings>> _jwtSettingsMock;
+  private Mock<IDateTimeProvider> _dateTimeProviderMock;
+  private Mock<ILogger<JwtTokenGenerator>> _loggerMock;
+
+  // Fixtures
+  private readonly IOptions<JwtSettings> _jwtSettingsFixture = new OptionsWrapper<JwtSettings>(
+    new JwtSettings
+    {
+      Audience = Utils.JwtSettings.Audience,
+      Issuer = Utils.JwtSettings.Issuer,
+      SecretKey = Utils.JwtSettings.SecretKey,
+      ExpiryMinutes = Utils.JwtSettings.ExpiryMinutes,
+    }
+  );
+
+  public JwtTokenGeneratorTests()
+  {
+    _jwtSettingsMock = new Mock<IOptions<JwtSettings>>();
+    _jwtSettingsMock.Setup(x => x.Value).Returns(_jwtSettingsFixture.Value);
+
+    _dateTimeProviderMock = new Mock<IDateTimeProvider>();
+    _loggerMock = new Mock<ILogger<JwtTokenGenerator>>();
+
+    _jwtTokenGenerator = new JwtTokenGenerator(
+      _jwtSettingsMock.Object,
+      _dateTimeProviderMock.Object,
+      _loggerMock.Object
+    );
+  }
+
+  [Fact]
+  public void GenerateToken_ReturnsInternalError_WhenSecretKeyIsNull()
+  {
+    //arrange
+    var user = Utils.User.Create();
+
+    _jwtSettingsMock
+      .Setup(x => x.Value)
+      .Returns(
+        new JwtSettings
+        {
+          Audience = Utils.JwtSettings.Audience,
+          Issuer = Utils.JwtSettings.Issuer,
+          SecretKey = null, // Set SecretKey to null
+          ExpiryMinutes = Utils.JwtSettings.ExpiryMinutes,
+        }
+      );
+
+    _jwtTokenGenerator = new JwtTokenGenerator(
+      _jwtSettingsMock.Object,
+      _dateTimeProviderMock.Object,
+      _loggerMock.Object
+    );
+
+    // act
+    var result = _jwtTokenGenerator.GenerateToken(
+      user.Id,
+      user.Email,
+      user.FirstName,
+      user.LastName
+    );
+
+    //assert
+
+    result.IsFailed.Should().BeTrue();
+  }
+
+  [Fact]
+  public void GenerateToken_ShouldReturnOkWithValidToken_WhenValidParametersAreProvided()
+  {
+    //arrange
+    var user = Utils.User.Create();
+
+    // act
+    var result = _jwtTokenGenerator.GenerateToken(
+      user.Id,
+      user.Email,
+      user.FirstName,
+      user.LastName
+    );
+
+    //assert
+    result.IsSuccess.Should().BeTrue();
+    result.Value.Should().NotBeNullOrEmpty();
+  }
+}