Decoration element: added tests

QuestPDF.UnitTests/DecorationTests.cs

@@ -0,0 +1,136 @@
+using NUnit.Framework;
+using QuestPDF.Drawing.SpacePlan;
+using QuestPDF.Elements;
+using QuestPDF.Infrastructure;
+using QuestPDF.UnitTests.TestEngine;
+
+namespace QuestPDF.UnitTests
+{
+    [TestFixture]
+    public class DecorationTests
+    {
+        #region Measure
+
+        [Test]
+        public void Measure_ReturnsWrap_WhenDecorationReturnsWrap()
+        {
+            TestPlan
+                .For(x => new Decoration
+                {
+                    Type = DecorationType.Append,
+                    DecorationElement = x.CreateChild("decoration"),
+                    ContentElement = x.CreateChild("content")
+                })
+                .MeasureElement(new Size(400, 300))
+                .ExpectChildMeasure("decoration", new Size(400, 300), new Wrap())
+                .CheckMeasureResult(new Wrap());
+        }
+        
+        [Test]
+        public void Measure_ReturnsWrap_WhenDecorationReturnsPartialRender()
+        {
+            TestPlan
+                .For(x => new Decoration
+                {
+                    Type = DecorationType.Append,
+                    DecorationElement = x.CreateChild("decoration"),
+                    ContentElement = x.CreateChild("content")
+                })
+                .MeasureElement(new Size(400, 300))
+                .ExpectChildMeasure("decoration", new Size(400, 300), new PartialRender(300, 200))
+                .CheckMeasureResult(new Wrap());
+        }
+        
+        [Test]
+        public void Measure_ReturnsWrap_WhenContentReturnsWrap()
+        {
+            TestPlan
+                .For(x => new Decoration
+                {
+                    Type = DecorationType.Append,
+                    DecorationElement = x.CreateChild("decoration"),
+                    ContentElement = x.CreateChild("content")
+                })
+                .MeasureElement(new Size(400, 300))
+                .ExpectChildMeasure("decoration", new Size(400, 300), new FullRender(300, 100))
+                .ExpectChildMeasure("content", new Size(400, 200), new Wrap())
+                .CheckMeasureResult(new Wrap());
+        }
+        
+        [Test]
+        public void Measure_ReturnsPartialRender_WhenContentReturnsPartialRender()
+        {
+            TestPlan
+                .For(x => new Decoration
+                {
+                    Type = DecorationType.Append,
+                    DecorationElement = x.CreateChild("decoration"),
+                    ContentElement = x.CreateChild("content")
+                })
+                .MeasureElement(new Size(400, 300))
+                .ExpectChildMeasure("decoration", new Size(400, 300), new FullRender(300, 100))
+                .ExpectChildMeasure("content", new Size(400, 200), new PartialRender(200, 150))
+                .CheckMeasureResult(new PartialRender(400, 250));
+        }
+        
+        [Test]
+        public void Measure_ReturnsFullRender_WhenContentReturnsFullRender()
+        {
+            TestPlan
+                .For(x => new Decoration
+                {
+                    Type = DecorationType.Append,
+                    DecorationElement = x.CreateChild("decoration"),
+                    ContentElement = x.CreateChild("content")
+                })
+                .MeasureElement(new Size(400, 300))
+                .ExpectChildMeasure("decoration", new Size(400, 300), new FullRender(300, 100))
+                .ExpectChildMeasure("content", new Size(400, 200), new FullRender(200, 150))
+                .CheckMeasureResult(new FullRender(400, 250));
+        }
+        
+        #endregion
+        
+        #region Draw
+        
+        [Test]
+        public void Draw_Prepend()
+        {
+            TestPlan
+                .For(x => new Decoration
+                {
+                    Type = DecorationType.Prepend,
+                    DecorationElement = x.CreateChild("decoration"),
+                    ContentElement = x.CreateChild("content")
+                })
+                .DrawElement(new Size(400, 300))
+                .ExpectChildMeasure("decoration", new Size(400, 300), new FullRender(300, 100))
+                .ExpectChildDraw("decoration", new Size(400, 100))
+                .ExpectCanvasTranslate(0, 100)
+                .ExpectChildDraw("content", new Size(400, 200))
+                .ExpectCanvasTranslate(0, -100)
+                .CheckDrawResult();
+        }
+        
+        [Test]
+        public void Draw_Append()
+        {
+            TestPlan
+                .For(x => new Decoration
+                {
+                    Type = DecorationType.Append,
+                    DecorationElement = x.CreateChild("decoration"),
+                    ContentElement = x.CreateChild("content")
+                })
+                .DrawElement(new Size(400, 300))
+                .ExpectChildMeasure("decoration", new Size(400, 300), new FullRender(300, 100))
+                .ExpectChildDraw("content", new Size(400, 200))
+                .ExpectCanvasTranslate(0, 200)
+                .ExpectChildDraw("decoration", new Size(400, 100))
+                .ExpectCanvasTranslate(0, -200)
+                .CheckDrawResult();
+        }
+
+        #endregion
+    }
+}

QuestPDF/Elements/Decoration.cs

@@ -13,8 +13,8 @@ namespace QuestPDF.Elements
     
     internal class Decoration : Element
     {
-        public Element? DecorationElement { get; set; }
-        public Element? ContentElement { get; set; }
+        public Element DecorationElement { get; set; } = new Empty();
+        public Element ContentElement { get; set; } = new Empty();
         public DecorationType Type { get; set; } 
 
         internal override ISpacePlan Measure(Size availableSpace)