Add integration tests

Author: joefarebrother

csharp/ql/integration-tests/all-platforms/cshtml_standalone_flowsteps/Controllers/TestController.cs

@@ -0,0 +1,16 @@
+namespace test;
+
+using System.Net;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.Razor;
+
+public class UserData
+{
+    public string Name { get; set; }
+}
+
+public class TestController : Controller {
+    public IActionResult Test(UserData tainted1) {
+        return View("Test", tainted1);
+    }
+}

csharp/ql/integration-tests/all-platforms/cshtml_standalone_flowsteps/Views/Test/Test.cshtml

@@ -0,0 +1,9 @@
+@namespace test
+@model UserData
+@{
+}
+
+@if (Model != null)
+{
+    <h3>Hello "@Html.Raw(Model.Name)"</h3>
+}

csharp/ql/integration-tests/all-platforms/cshtml_standalone_flowsteps/XSS.expected

@@ -0,0 +1 @@
+Security Features/CWE-079/XSS.ql

csharp/ql/integration-tests/all-platforms/cshtml_standalone_flowsteps/XSS.qlref

@@ -0,0 +1,6 @@
+import os
+from create_database_utils import *
+
+
+os.environ['CODEQL_EXTRACTOR_CSHARP_STANDALONE_EXTRACT_WEB_VIEWS'] = 'true'
+run_codeql_database_create(lang="csharp", extra_args=["--extractor-option=buildless=true", "--extractor-option=cil=false"])