From 1f3d71895cd8e0cde6e7efd67a4dcb0c0a38ef45 Mon Sep 17 00:00:00 2001
From: Florian Rappl <mail@florian-rappl.de>
Date: Wed, 14 Jun 2023 15:06:13 +0200
Subject: [PATCH] Fixed keyframe stop truncation #128

---
 CHANGELOG.md                                        |  1 +
 src/AngleSharp.Css.Tests/Rules/CssKeyframeRule.cs   | 12 +++++++++++-
 src/AngleSharp.Css/Dom/Internal/KeyframeSelector.cs |  2 +-
 3 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 83998ab2..ddaa5995 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@ Released on tbd.
 - Fixed issue when updating shorthands with invalid values (#129)
 - Fixed issue with appended EOF character in `CssText` (#123)
 - Fixed missing semicolon in `@page` rule (#135)
+- Fixed integer serialization of keyframe stops (#128)
 
 # 0.17.0
 
diff --git a/src/AngleSharp.Css.Tests/Rules/CssKeyframeRule.cs b/src/AngleSharp.Css.Tests/Rules/CssKeyframeRule.cs
index d2b63469..efcc9a55 100644
--- a/src/AngleSharp.Css.Tests/Rules/CssKeyframeRule.cs
+++ b/src/AngleSharp.Css.Tests/Rules/CssKeyframeRule.cs
@@ -1,4 +1,4 @@
-namespace AngleSharp.Css.Tests.Rules
+namespace AngleSharp.Css.Tests.Rules
 {
     using NUnit.Framework;
     using System.Linq;
@@ -74,5 +74,15 @@ public void KeyframeRuleWith0AndNoDeclarations()
             Assert.AreEqual(1, rule.Key.Stops.Count());
             Assert.AreEqual(0, rule.Style.Length);
         }
+
+        [Test]
+        public void KeyframeRuleWithPercentage_Issue128()
+        {
+            var rule = ParseKeyframeRule(@"  0.52%,   50.0%,92.82% { }");
+            Assert.IsNotNull(rule);
+            Assert.AreEqual("0.52%, 50%, 92.82%", rule.KeyText);
+            Assert.AreEqual(3, rule.Key.Stops.Count());
+            Assert.AreEqual(0, rule.Style.Length);
+        }
     }
 }
diff --git a/src/AngleSharp.Css/Dom/Internal/KeyframeSelector.cs b/src/AngleSharp.Css/Dom/Internal/KeyframeSelector.cs
index 14ed2e7f..d2792cec 100644
--- a/src/AngleSharp.Css/Dom/Internal/KeyframeSelector.cs
+++ b/src/AngleSharp.Css/Dom/Internal/KeyframeSelector.cs
@@ -56,7 +56,7 @@ public void ToCss(TextWriter writer, IStyleFormatter formatter)
 
         private static void Write(TextWriter writer, Double value)
         {
-            var pc = Math.Truncate(100.0 * value);
+            var pc = 100.0 * value;
             var str = pc.ToString(CultureInfo.InvariantCulture);
             writer.Write(str);
             writer.Write(Symbols.Percent);