Add factory service tests

ShopifySharp.Tests/Factories/OrderServiceFactoryTest.cs

@@ -0,0 +1,42 @@
+using FluentAssertions;
+using JetBrains.Annotations;
+using ShopifySharp.Credentials;
+using ShopifySharp.Factories;
+using Xunit;
+
+namespace ShopifySharp.Tests.Factories;
+
+[TestSubject(typeof(OrderServiceFactory))]
+[Trait("Category", "Factories")]
+public class OrderServiceFactoryTest
+{
+    private const string ShopDomain = "some-shop-domain";
+    private const string AccessToken = "some-access-token";
+
+    private readonly OrderServiceFactory _factory = new();
+
+    [Fact]
+    public void Create_ReturnsTheService()
+    {
+        // Act
+        var service = _factory.Create(ShopDomain, AccessToken);
+
+        // Assert
+        service.Should().NotBeNull();
+        service.Should().BeOfType<OrderService>().And.BeAssignableTo<IOrderService>();
+    }
+
+    [Fact]
+    public void Create_WhenGivenShopifyPartnerApiCredentials_ReturnsTheService()
+    {
+        // Setup
+        var credentials = new ShopifyApiCredentials(ShopDomain, AccessToken);
+
+        // Act
+        var service = _factory.Create(credentials);
+
+        // Assert
+        service.Should().NotBeNull();
+        service.Should().BeOfType<OrderService>().And.BeAssignableTo<IOrderService>();
+    }
+}

ShopifySharp.Tests/Factories/PartnerServiceFactoryTest.cs

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+#nullable enable
+using FluentAssertions;
+using JetBrains.Annotations;
+using ShopifySharp.Credentials;
+using ShopifySharp.Factories;
+using Xunit;
+
+namespace ShopifySharp.Tests.Factories;
+
+[TestSubject(typeof(PartnerServiceFactory))]
+[Trait("Category", "Factories")]
+public class PartnerServiceFactoryTest
+{
+    private const long OrganizationId = 123L;
+    private const string AccessToken = "some-access-token";
+
+    private readonly PartnerServiceFactory _factory = new();
+
+    [Fact]
+    public void Create_ReturnsTheService()
+    {
+        // Act
+        var service = _factory.Create(OrganizationId, AccessToken);
+
+        // Assert
+        service.Should().NotBeNull();
+        service.Should().BeOfType<PartnerService>().And.BeAssignableTo<IPartnerService>();
+    }
+
+    [Fact]
+    public void Create_WhenGivenShopifyPartnerApiCredentials_ReturnsTheService()
+    {
+        // Setup
+        var credentials = new ShopifyPartnerApiCredentials(OrganizationId, AccessToken);
+
+        // Act
+        var service = _factory.Create(credentials);
+
+        // Assert
+        service.Should().NotBeNull();
+        service.Should().BeOfType<PartnerService>().And.BeAssignableTo<IPartnerService>();
+    }
+}