Tests added for checking if hasChildNodes is a method and if it works as expected

Author: arekdygas

src/AngleSharp.Js.Tests/DomTests.cs

@@ -0,0 +1,30 @@
+namespace AngleSharp.Js.Tests
+{
+    using NUnit.Framework;
+    using System.Threading.Tasks;
+
+    [TestFixture]
+    public class DomTests
+    {
+        [Test]
+        public async Task NodeHasChildNodesIsAFunction()
+        {
+            var result = await "document.createElement('div').hasChildNodes".EvalScriptAsync();
+            Assert.AreEqual("function hasChildNodes() { [native code] }", result);
+        }
+
+        [Test]
+        public async Task NodeHasChildNodesWithoutChildren()
+        {
+            var result = await "document.createElement('div').hasChildNodes()".EvalScriptAsync();
+            Assert.AreEqual("False", result);
+        }
+
+        [Test]
+        public async Task NodeHasChildNodesWithChildren()
+        {
+            var result = await "new DOMParser().parseFromString(`<div><input/></div>`, 'text/html').body.firstChild.hasChildNodes()".EvalScriptAsync();
+            Assert.AreEqual("True", result);
+        }
+    }
+}