Add integration test

Author: mbg

csharp/ql/integration-tests/linux/diag_nuget_config_casing/Program.cs

@@ -0,0 +1,6 @@
+class Program
+{
+    static void Main(string[] args)
+    {
+    }
+}

csharp/ql/integration-tests/linux/diag_nuget_config_casing/diagnostics.expected

@@ -0,0 +1,28 @@
+{
+  "markdownMessage": "C# analysis with build-mode 'none' completed.",
+  "severity": "unknown",
+  "source": {
+    "extractorName": "csharp",
+    "id": "csharp/autobuilder/buildless/complete",
+    "name": "C# analysis with build-mode 'none' completed"
+  },
+  "visibility": {
+    "cliSummaryTable": true,
+    "statusPage": false,
+    "telemetry": true
+  }
+}
+{
+  "markdownMessage": "C# was extracted with build-mode set to 'none'. This means that all C# source in the working directory will be scanned, with build tools, such as NuGet and dotnet CLIs, only contributing information about external dependencies.",
+  "severity": "note",
+  "source": {
+    "extractorName": "csharp",
+    "id": "csharp/autobuilder/buildless/mode-active",
+    "name": "C# was extracted with build-mode set to 'none'"
+  },
+  "visibility": {
+    "cliSummaryTable": true,
+    "statusPage": true,
+    "telemetry": true
+  }
+}

csharp/ql/integration-tests/linux/diag_nuget_config_casing/global.json

@@ -0,0 +1,5 @@
+{
+    "sdk": {
+        "version": "10.0.100"
+    }
+}

csharp/ql/integration-tests/linux/diag_nuget_config_casing/sub-project/Nuget.Config

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <packageSources>
+  </packageSources>
+</configuration>

csharp/ql/integration-tests/linux/diag_nuget_config_casing/test.csproj

@@ -0,0 +1,8 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net10.0</TargetFramework>
+  </PropertyGroup>
+
+</Project>

csharp/ql/integration-tests/linux/diag_nuget_config_casing/test.py

@@ -0,0 +1,5 @@
+import runs_on
+
+@runs_on.linux
+def test(codeql, csharp):
+    codeql.database.create(build_mode="none")