Adds Configuration Manager + tests

Tests/TestConfigurationManagement.cs

@@ -0,0 +1,171 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using Moq;
+using Newtonsoft.Json.Linq;
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using Tests;
+using Core.Configurations.ConfigurationManager;
+
+namespace Configuration.Core.Tests;
+
+[TestClass]
+public class ConfigurationTests : TestFixture
+{
+    private Mock<IConfigurationRepository> _mockRepo;
+    private KeyValueConfigurationBuilder _builder;
+
+    [TestInitialize]
+    public void Init()
+    {
+        _mockRepo = new Mock<IConfigurationRepository>();
+        _builder = new KeyValueConfigurationBuilder(_mockRepo.Object);
+    }
+
+    [TestMethod]
+    public async Task LoadConfiguration_WithValidData_BuildsCorrectly()
+    {
+        // Arrange
+        var configurations = new List<AppConfiguration>
+        {
+            new AppConfiguration
+            {
+                Key = "Email:Templates:Welcome",
+                Value = @"{""subject"":""Welcome"",""sender"":""test@company.com""}",
+                ValidFrom = DateTime.UtcNow.AddDays(-1),
+                ExpiresAt = DateTime.UtcNow.AddDays(1)
+            }
+        };
+
+        _mockRepo.Setup(r => r.GetActiveConfigurations())
+            .ReturnsAsync(configurations);
+
+        // Act
+        await _builder.LoadConfiguration();
+        var config = _builder.Build();
+
+        // Assert
+        Assert.IsNotNull(config);
+        Assert.AreEqual("Welcome", config["Email:Templates:Welcome:subject"]);
+    }
+
+    [TestMethod]
+    public async Task LoadConfiguration_WithExpiredData_NotIncluded()
+    {
+        // Arrange
+        var configurations = new List<AppConfiguration>
+        {
+            new AppConfiguration
+            {
+                Key = "Test:Key",
+                Value = @"{""value"":""test""}",
+                ValidFrom = DateTime.UtcNow.AddDays(1),
+                ExpiresAt = DateTime.UtcNow.AddDays(2)
+            }
+        };
+
+        _mockRepo.Setup(r => r.GetActiveConfigurations())
+            .ReturnsAsync(new List<AppConfiguration>());
+
+        // Act
+        await _builder.LoadConfiguration();
+        var config = _builder.Build();
+
+        // Assert
+        Assert.IsNull(config["Test:Key:value"]);
+    }
+
+    [TestMethod]
+    public void AddKeyValue_WithNestedKeys_BuildsCorrectHierarchy()
+    {
+        // Arrange
+        var key = "Level1:Level2:Level3";
+        var value = @"{""setting"":""value""}";
+
+        // Act
+        _builder.AddKeyValue(key, value);
+        var config = _builder.Build();
+
+        // Assert
+        Assert.AreEqual("value", config["Level1:Level2:Level3:setting"]);
+    }
+
+    [TestMethod]
+    public async Task GetSection_ReturnsCorrectSubSection()
+    {
+        // Arrange
+        var configurations = new List<AppConfiguration>
+        {
+            new AppConfiguration
+            {
+                Key = "Parent:Child",
+                Value = @"{""setting"":""value""}",
+                ValidFrom = DateTime.UtcNow.AddDays(-1)
+            }
+        };
+
+        _mockRepo.Setup(r => r.GetActiveConfigurations())
+            .ReturnsAsync(configurations);
+
+        // Act
+        await _builder.LoadConfiguration();
+        var config = _builder.Build();
+        var section = config.GetSection("Parent");
+
+        // Assert
+        Assert.AreEqual("value", section["Child:setting"]);
+    }
+
+    [TestMethod]
+    public void Configuration_ShouldMapToTypedClass()
+    {
+        // Arrange
+        var configData = new JObject
+        {
+            ["Email"] = new JObject
+            {
+                ["Templates"] = new JObject
+                {
+                    ["Welcome"] = new JObject
+                    {
+                        ["subject"] = "Welcome to our service",
+                        ["template"] = "welcome-template.html",
+                        ["sender"] = "noreply@test.com",
+                        ["settings"] = new JObject
+                        {
+                            ["isEnabled"] = true,
+                            ["retryCount"] = 3
+                        }
+                    }
+                }
+            }
+        };
+
+        var configuration = new JsonConfiguration(configData, new Microsoft.Extensions.Configuration.ConfigurationReloadToken());
+
+        // Act
+        var welcomeConfig = configuration.GetSection("Email:Templates:Welcome").Get<WelcomeEmailConfig>();
+
+        // Assert
+        Assert.IsNotNull(welcomeConfig);
+        Assert.AreEqual("Welcome to our service", welcomeConfig.Subject);
+        Assert.AreEqual("welcome-template.html", welcomeConfig.Template);
+        Assert.AreEqual("noreply@test.com", welcomeConfig.Sender);
+        Assert.IsTrue(welcomeConfig.Settings.IsEnabled);
+        Assert.AreEqual(3, welcomeConfig.Settings.RetryCount);
+    }
+
+    public class WelcomeEmailConfig
+    {
+        public string Subject { get; set; }
+        public string Template { get; set; }
+        public string Sender { get; set; }
+        public EmailSettings Settings { get; set; }
+    }
+
+    public class EmailSettings
+    {
+        public bool IsEnabled { get; set; }
+        public int RetryCount { get; set; }
+    }
+}