feat (Tests): adds tests for default image THR

tests/Rhythm.Drop.Web.Tests/TagHelperRenderers/Images/DefaultImageTagHelperRendererTests.cs

@@ -0,0 +1,104 @@
+namespace Rhythm.Drop.Web.Tests.TagHelperRenderers.Images;
+
+using Microsoft.AspNetCore.Razor.TagHelpers;
+using Rhythm.Drop.Models.Images;
+using Rhythm.Drop.Web.Infrastructure;
+using Rhythm.Drop.Web.Infrastructure.TagHelperRenderers.Images;
+using Rhythm.Drop.Web.TagHelperRenderers.Images;
+using System.Threading.Tasks;
+
+[TestFixture]
+public class DefaultImageTagHelperRendererTests : TagHelperRendererTestsBase
+{
+    [Test]
+    public async Task RenderAsync_With_No_Image_Returns_No_Output()
+    {
+        // arrange
+        var tagHelperRenderer = new DefaultDropImageTagHelperRenderer();
+        var rendererContext = new DropImageTagHelperRendererContext(default, RenderMode.Default);
+        var context = CreateTagHelperContext(DefaultTagName);
+        var output = CreateTagHelperOutput(DefaultTagName);
+
+        // act
+        await tagHelperRenderer.RenderAsync(rendererContext, context, output);
+
+        // assert
+        Assert.Multiple(() =>
+        {
+            Assert.That(output.TagName, Is.Not.EqualTo(DefaultTagName));
+            Assert.That(output.Content.IsModified, Is.False);
+        });
+    }
+
+    [Test]
+    public async Task RenderAsync_With_Simple_Image_Returns_Output_With_Img_TagName()
+    {
+        // arrange
+        var tagHelperRenderer = new DefaultDropImageTagHelperRenderer();
+        var image = new Image("/image.gif", "Test");
+        var rendererContext = new DropImageTagHelperRendererContext(image, RenderMode.Default);
+        var context = CreateTagHelperContext(DefaultTagName);
+        var output = CreateTagHelperOutput(DefaultTagName);
+
+        // act
+        await tagHelperRenderer.RenderAsync(rendererContext, context, output);
+
+        // assert
+        Assert.Multiple(() =>
+        {
+            Assert.That(output.TagName, Is.EqualTo("img"));
+            Assert.That(output.Content.IsModified, Is.False);
+
+            Assert.That(output.Attributes, Has.One.Matches<TagHelperAttribute>(x => x.Name == "src" && x.Value.ToString() == image.Url));
+            Assert.That(output.Attributes, Has.One.Matches<TagHelperAttribute>(x => x.Name == "alt" && x.Value.ToString() == image.AltText));
+        });
+    }
+
+    public async Task RenderAsync_With_Simple_Image_And_Dimensions_Returns_Output_With_Img_TagName_And_Attributes()
+    {        
+        // arrange
+        var tagHelperRenderer = new DefaultDropImageTagHelperRenderer();
+        var image = new Image("/image.gif", "Test", 200, 200);
+        var rendererContext = new DropImageTagHelperRendererContext(image, RenderMode.Default);
+        var context = CreateTagHelperContext(DefaultTagName);
+        var output = CreateTagHelperOutput(DefaultTagName);
+
+        // act
+        await tagHelperRenderer.RenderAsync(rendererContext, context, output);
+
+        // assert
+        Assert.Multiple(() =>
+        {
+            Assert.That(output.TagName, Is.EqualTo("img"));
+            Assert.That(output.Content.IsModified, Is.False);
+
+            Assert.That(output.Attributes, Has.One.Matches<TagHelperAttribute>(x => x.Name == "src" && x.Value.ToString() == image.Url));
+            Assert.That(output.Attributes, Has.One.Matches<TagHelperAttribute>(x => x.Name == "alt" && x.Value.ToString() == image.AltText));
+
+            Assert.That(output.Attributes, Has.One.Matches<TagHelperAttribute>(x => x.Name == "width" && x.Value.ToString() == image.Width.ToString()));
+            Assert.That(output.Attributes, Has.One.Matches<TagHelperAttribute>(x => x.Name == "height" && x.Value.ToString() == image.Height.ToString()));
+        });
+    }
+
+
+    [Test]
+    public async Task RenderAsync_With_Image_That_Has_Sources_Returns_Output_With_Picture_TagName()
+    {
+        // arrange
+        var tagHelperRenderer = new DefaultDropImageTagHelperRenderer();
+        var image = new Image("/image.gif", "Test", default, default, [new ImageSource("/image2.gif")]);
+        var rendererContext = new DropImageTagHelperRendererContext(image, RenderMode.Default);
+        var context = CreateTagHelperContext(DefaultTagName);
+        var output = CreateTagHelperOutput(DefaultTagName);
+
+        // act
+        await tagHelperRenderer.RenderAsync(rendererContext, context, output);
+
+        // assert
+        Assert.Multiple(() =>
+        {
+            Assert.That(output.TagName, Is.EqualTo("picture"));
+            Assert.That(output.Content.IsModified, Is.True);
+        });
+    }
+}