added new unit test and new model for search product name

ShoppingAssistantApi.Application/Models/ProductSearch/ProductName.cs

@@ -0,0 +1,6 @@
+namespace ShoppingAssistantApi.Application.Models.ProductSearch;
+
+public class ProductName
+{
+    public string Name { get; set; }
+}

ShoppingAssistantApi.Tests/ShoppingAssistantApi.Tests.csproj

@@ -13,6 +13,7 @@
     <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="7.0.9" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.5.0" />
     <PackageReference Include="Mongo2Go" Version="3.1.3" />
+    <PackageReference Include="Moq" Version="4.20.69" />
     <PackageReference Include="xunit" Version="2.4.2" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.5">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>

ShoppingAssistantApi.Tests/Tests/ProductTests.cs

@@ -0,0 +1,61 @@
+using System.Collections.ObjectModel;
+using Microsoft.VisualBasic;
+using MongoDB.Bson;
+using Moq;
+using Newtonsoft.Json;
+using ShoppingAssistantApi.Application.Models.Dtos;
+using ShoppingAssistantApi.Application.IServices;
+using ShoppingAssistantApi.Application.Models.OpenAi;
+using ShoppingAssistantApi.Application.Models.ProductSearch;
+using ShoppingAssistantApi.Domain.Entities;
+using ShoppingAssistantApi.Domain.Enums;
+using ShoppingAssistantApi.Tests.TestExtentions;
+using ShoppingAssistantApi.Infrastructure.Services;
+
+namespace ShoppingAssistantApi.Tests.Tests;
+
+public class ProductTests : TestsBase
+{
+    private Mock<IOpenAiService> _openAiServiceMock;
+    
+    private Mock<IProductService> _productServiceMock;
+    
+    public ProductTests(TestingFactory<Program> factory) : base(factory)
+    {
+        _openAiServiceMock = new Mock<IOpenAiService>();
+        _productServiceMock = new Mock<IProductService>();
+    }
+    
+    
+    [Fact]
+    public async Task GetProductFromSearch_ReturnsProductList()
+    {
+        var message = new Message
+        {
+            Id = ObjectId.Parse("ab6c2c2d9edf39abcd1ef9ab"),
+            Text = "what are the best graphics cards you know?",
+            CreatedById = ObjectId.Parse("ab6c2c2d9edf39abcd1ef9ab"),
+            Role = "user"
+        };
+        var cancellationToken = CancellationToken.None;
+
+        var productServiceMock = new Mock<IProductService>();
+        var expectedProductList = new List<string> { "NVIDIA GeForce RTX 3080", "AMD Radeon RX 6900 XT" };
+        productServiceMock.Setup(x => x.GetProductFromSearch(message, cancellationToken))
+            .ReturnsAsync(expectedProductList);
+
+        var openAiServiceMock = new Mock<IOpenAiService>();
+        var expectedOpenAiMessage = new OpenAiMessage
+        {
+            Role = OpenAiRole.User,
+            Content = "[\n  { \"Name\": \"NVIDIA GeForce RTX 3080\" },\n  { \"Name\": \"AMD Radeon RX 6900 XT\" }\n]"
+        };
+        openAiServiceMock.Setup(x => x.GetChatCompletion(It.IsAny<ChatCompletionRequest>(), cancellationToken))
+            .ReturnsAsync(expectedOpenAiMessage);
+
+        var productList = JsonConvert.DeserializeObject<List<ProductName>>(expectedOpenAiMessage.Content).Select(info => info.Name).ToList();
+
+        Assert.Equal(expectedProductList, productList);
+    }
+    
+}