C#: Add integration test for cshtml extraction in standalone mode

Author: tamasvajk

csharp/ql/integration-tests/all-platforms/cshtml_standalone/Files.expected

@@ -0,0 +1,3 @@
+| Program.cs |
+| Views/Home/Index.cshtml |
+| _semmle_code_target_codeql_csharp_integration_tests_ql_csharp_ql_integration_tests_all_platforms_cshtml_standalone_Views_Home_Index_cshtml.g.cs |

csharp/ql/integration-tests/all-platforms/cshtml_standalone/Files.ql

@@ -0,0 +1,17 @@
+import csharp
+
+private string getPath(File f) {
+  result = f.getRelativePath()
+  or
+  not exists(f.getRelativePath()) and
+  exists(int index |
+    index =
+      f.getBaseName()
+          .indexOf("_semmle_code_target_codeql_csharp_integration_tests_ql_csharp_ql_integration_tests_all_platforms_cshtml_standalone_") and
+    result = f.getBaseName().substring(index, f.getBaseName().length())
+  )
+}
+
+from File f
+where f.fromSource() or f.getExtension() = "cshtml"
+select getPath(f)

csharp/ql/integration-tests/all-platforms/cshtml_standalone/Program.cs

@@ -0,0 +1 @@
+var dummy = "dummy";

csharp/ql/integration-tests/all-platforms/cshtml_standalone/Views/Home/Index.cshtml

@@ -0,0 +1,8 @@
+@{
+    ViewData["Title"] = "Home Page";
+}
+
+<div class="text-center">
+    <h1 class="display-4">Welcome</h1>
+    <p>Learn about <a href="https://docs.microsoft.com/aspnet/core">building Web apps with ASP.NET Core</a>.</p>
+</div>

csharp/ql/integration-tests/all-platforms/cshtml_standalone/cshtml.csproj

@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+ <Target Name="DeleteBinObjFolders" BeforeTargets="Clean">
+   <RemoveDir Directories=".\bin" />
+   <RemoveDir Directories=".\obj" />
+ </Target>
+</Project>

csharp/ql/integration-tests/all-platforms/cshtml_standalone/test.py

@@ -0,0 +1,3 @@
+from create_database_utils import *
+
+run_codeql_database_create(lang="csharp", extra_args=["--extractor-option=buildless=true", "--extractor-option=cil=false"])