Don't allow content in the script and make it self closing, but the o…

…utput should always have a start and end tag.

src/ReCaptcha/TagHelpers/RecaptchaScriptTagHelper.cs

@@ -12,6 +12,7 @@ namespace GSoftware.AspNetCore.ReCaptcha.TagHelpers
     /// anywhere on your HTML page, but if you use a onload callback function you must place this
     /// after that callback to avoid race conditions.
     /// </summary>
+    [HtmlTargetElement("recaptcha-script", TagStructure = TagStructure.WithoutEndTag)] 
     public class RecaptchaScriptTagHelper : TagHelper
     {
         private const string RecaptchaScriptEndpoint = "https://www.google.com/recaptcha/api.js";
@@ -48,6 +49,7 @@ public override void Process(TagHelperContext context, TagHelperOutput output)
             _ = output ?? throw new ArgumentNullException(nameof(output));
 
             output.TagName = "script";
+            output.TagMode = TagMode.StartTagAndEndTag;
 
             if (Render == Render.V3)
             {

tests/ReCaptcha.Tests/TagHelpers/RecaptchaScriptTagHelperTests.cs

@@ -58,6 +58,20 @@ public void Process_ShouldChangeTagTo_ScriptTag()
             Assert.AreEqual("script", _tagHelperOutput.TagName);
         }
 
+        [Test]
+        public void Process_ShouldChange_TagModeTo_StartTagAndEndTag()
+        {
+            // Arrange
+            var scriptTagHelper = new RecaptchaScriptTagHelper(_settingsMock.Object);
+            _tagHelperOutput.TagMode = TagMode.SelfClosing;
+
+            // Act
+            scriptTagHelper.Process(_context, _tagHelperOutput);
+
+            // Assert
+            Assert.AreEqual(TagMode.StartTagAndEndTag, _tagHelperOutput.TagMode);
+        }
+
         [Test]
         public void Process_ShouldContain_ThreeAttributes()
         {