Add integration test for missing nuget package sources

Author: tamasvajk

csharp/ql/integration-tests/posix-only/standalone_dependencies_nuget_no_sources/Assemblies.expected

@@ -0,0 +1,14 @@
+import csharp
+
+private string getPath(Assembly a) {
+  not a.getCompilation().getOutputAssembly() = a and
+  exists(string s | s = a.getFile().getAbsolutePath() |
+    result =
+      s.substring(s.indexOf("test-db/working/") + "test-db/working/".length() + 16 +
+          "/legacypackages".length(), s.length())
+    // TODO: include all other assemblies from the test results. Initially disable because mono installations were problematic on ARM runners.
+  )
+}
+
+from Assembly a
+select getPath(a)

csharp/ql/integration-tests/posix-only/standalone_dependencies_nuget_no_sources/Assemblies.ql

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <packageSources>
+    <!-- Remove all nuget package sources to force adding the default feed in the extraction root. -->
+    <clear />
+  </packageSources>
+</configuration>

csharp/ql/integration-tests/posix-only/standalone_dependencies_nuget_no_sources/nuget.config

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

csharp/ql/integration-tests/posix-only/standalone_dependencies_nuget_no_sources/proj/Program.cs

@@ -0,0 +1,5 @@
+{
+    "sdk": {
+        "version": "8.0.101"
+    }
+}

csharp/ql/integration-tests/posix-only/standalone_dependencies_nuget_no_sources/proj/global.json

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+  <package id="Newtonsoft.Json" version="6.0.4" targetFramework="net461" />
+</packages>

csharp/ql/integration-tests/posix-only/standalone_dependencies_nuget_no_sources/proj/packages.config

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
+</Project>

csharp/ql/integration-tests/posix-only/standalone_dependencies_nuget_no_sources/proj/test.csproj

@@ -0,0 +1 @@
+Skipping the test on the ARM runners, as we're running into trouble with Mono and nuget.

csharp/ql/integration-tests/posix-only/standalone_dependencies_nuget_no_sources/skip-on-platform-osx-arm

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