tests: validate hx-vals, hx-headers, hx-on works

Author: egil

test/Htmxor.TestApp/Components/Pages/Home.razor

@@ -133,5 +133,14 @@ Htmxor.
         <tr>
             <td><a href="/redirect-with-navman">Redirect using Nav Man</a></td>
         </tr>
+        <tr>
+            <td><a href="/hx-vals-escaped">hx-vals-escaped</a></td>
+        </tr>
+        <tr>
+            <td><a href="/hx-on">hx-on</a></td>
+        </tr>
+        <tr>
+            <td><a href="/hx-headers-escaped">hx-headers-escaped</a></td>
+        </tr>
     </tbody>
 </table>

test/Htmxor.TestApp/Components/Pages/HxHeaders.razor

@@ -0,0 +1,2 @@
+@page "/hx-headers-escaped"
+<button type="button" hx-get="/hx-headers-escaped" hx-headers='{"myHeader": "My Value"}'>Get Some HTML, Including A Custom Header in the Request</button>

test/Htmxor.TestApp/Components/Pages/HxOn.razor

@@ -0,0 +1,26 @@
+@page "/hx-on"
+<div hx-on:click="alert('Clicked!')">Click</div>
+
+<!-- These two are equivalent -->
+<button hx-get="/info" hx-on:htmx:before-request="alert('Making a request 1!')">
+    Get Info 1!
+</button>
+
+<button hx-get="/info" hx-on::before-request="alert('Making a request 2!')">
+    Get Info 2!
+</button>
+
+<button hx-get="/info"
+        hx-on::before-request="alert('Making a request 3!')"
+        hx-on::after-request="alert('Done making a request 3!')">
+    Get Info 3 !
+</button>
+
+<!-- These two are equivalent -->
+<button hx-get="/info" hx-on-htmx-before-request="alert('Making a request 4!')">
+    Get Info 4!
+</button>
+
+<button hx-get="/info" hx-on--before-request="alert('Making a request 5!')">
+    Get Info 5!
+</button>

test/Htmxor.TestApp/Components/Pages/HxVals.razor

@@ -0,0 +1,6 @@
+@page "/hx-vals-escaped"
+<button hx-post="/hx-vals-escaped"
+        hx-vals='{"myVal": "My Value"}'
+        type="button">
+    VALS
+</button>

test/Htmxor.Tests/DemoTestCases/HxValsTest.cs

@@ -0,0 +1,33 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Htmxor.DemoTestCases;
+
+public class HxValsTest : TestAppTestBase
+{
+    public HxValsTest(TestAppFixture fixture) : base(fixture)
+    {
+    }
+
+    [Fact]
+    public async Task HxVals_correctly_escaped_by_renderer()
+    {
+        await Host.Scenario(s =>
+        {
+            s.Get.Url("/hx-vals-escaped");
+
+            s.StatusCodeShouldBe(HttpStatusCode.OK);
+            s.ContentShouldBeHtml(FullPageContent($$"""
+                <button hx-post="/hx-vals-escaped"
+                        hx-vals='{"myVal": "My Value"}'
+                        type="button">
+                    VALS
+                </button>
+                """));
+        });
+    }
+}