C#: Add stub generator integration test

.github/workflows/csharp-qltest.yml

@@ -53,7 +53,6 @@ jobs:
         slice: ["1/2", "2/2"]
     steps:
       - uses: actions/checkout@v4
-      - uses: ./.github/actions/fetch-codeql
       - uses: ./csharp/actions/create-extractor-pack
       - name: Cache compilation cache
         id: query-cache
@@ -62,12 +61,7 @@ jobs:
           key: csharp-qltest-${{ matrix.slice }}
       - name: Run QL tests
         run: |
-          CODEQL_PATH=$(gh codeql version --format=json | jq -r .unpackedLocation)
-          # The legacy ASP extractor is not in this repo, so take the one from the nightly build
-          mv "$CODEQL_PATH/csharp/tools/extractor-asp.jar" "${{ github.workspace }}/csharp/extractor-pack/tools"
-          # Safe guard against using the bundled extractor
-          rm -rf "$CODEQL_PATH/csharp"
-          codeql test run --threads=0 --ram 50000 --slice ${{ matrix.slice }} --search-path "${{ github.workspace }}/csharp/extractor-pack" --check-databases --check-undefined-labels --check-repeated-labels --check-redefined-labels --consistency-queries ql/consistency-queries ql/test --compilation-cache "${{ steps.query-cache.outputs.cache-dir }}"
+          codeql test run --threads=0 --ram 50000 --slice ${{ matrix.slice }} --search-path extractor-pack --check-databases --check-undefined-labels --check-repeated-labels --check-redefined-labels --consistency-queries ql/consistency-queries ql/test --compilation-cache "${{ steps.query-cache.outputs.cache-dir }}"
         env:
           GITHUB_TOKEN: ${{ github.token }}
   unit-tests:
@@ -80,7 +74,24 @@ jobs:
           dotnet-version: 7.0.102
       - name: Extractor unit tests
         run: |
-          dotnet test -p:RuntimeFrameworkVersion=7.0.2 "${{ github.workspace }}/csharp/extractor/Semmle.Util.Tests"
-          dotnet test -p:RuntimeFrameworkVersion=7.0.2 "${{ github.workspace }}/csharp/extractor/Semmle.Extraction.Tests"
-          dotnet test -p:RuntimeFrameworkVersion=7.0.2 "${{ github.workspace }}/csharp/autobuilder/Semmle.Autobuild.CSharp.Tests"
+          dotnet test -p:RuntimeFrameworkVersion=7.0.2 extractor/Semmle.Util.Tests
+          dotnet test -p:RuntimeFrameworkVersion=7.0.2 extractor/Semmle.Extraction.Tests
+          dotnet test -p:RuntimeFrameworkVersion=7.0.2 autobuilder/Semmle.Autobuild.CSharp.Tests
           dotnet test -p:RuntimeFrameworkVersion=7.0.2 "${{ github.workspace }}/cpp/autobuilder/Semmle.Autobuild.Cpp.Tests"
+  stubgentest:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: ./csharp/actions/create-extractor-pack
+      - name: Run stub generator tests
+        run: |
+          # Generate (Asp)NetCore stubs
+          STUBS_PATH=stubs_output
+          python3 ql/src/Stubs/make_stubs_nuget.py webapp Swashbuckle.AspNetCore.Swagger latest "$STUBS_PATH"
+          rm -rf ql/test/resources/stubs/_frameworks
+          # Update existing stubs in the repo with the freshly generated ones
+          mv "$STUBS_PATH/output/stubs/_frameworks" ql/test/resources/stubs/
+          git status
+          codeql test run --threads=0 --search-path extractor-pack --check-databases --check-undefined-labels --check-repeated-labels --check-redefined-labels --consistency-queries ql/consistency-queries -- ql/test/library-tests/dataflow/flowsources/aspremote
+        env:
+          GITHUB_TOKEN: ${{ github.token }}

csharp/actions/create-extractor-pack/action.yml

@@ -3,6 +3,7 @@ description: Builds the C# CodeQL pack
 runs:
   using: composite
   steps:
+    - uses: ./.github/actions/fetch-codeql
     - name: Setup dotnet
       uses: actions/setup-dotnet@v3
       with:
@@ -11,3 +12,13 @@ runs:
       shell: bash
       run: scripts/create-extractor-pack.sh
       working-directory: csharp
+    - name: Patch bundle to include ASP extractor
+      shell: bash
+      run: |
+        CODEQL_PATH=$(gh codeql version --format=json | jq -r .unpackedLocation)
+        # The legacy ASP extractor is not in this repo, so take the one from the nightly build
+        mv "$CODEQL_PATH/csharp/tools/extractor-asp.jar" "${{ github.workspace }}/csharp/extractor-pack/tools"
+        # Safe guard against using the bundled extractor
+        rm -rf "$CODEQL_PATH/csharp"
+      env:
+        GITHUB_TOKEN: ${{ github.token }}

csharp/ql/src/Stubs/make_stubs_nuget.py

@@ -211,7 +211,6 @@ with open(os.path.join(frameworksDir, 'Microsoft.NETCore.App', 'Microsoft.NETCor
             copiedFiles.add(pathInfo)
             shutil.copy2(pathInfos[pathInfo], frameworkDir)
 
-exitCode = 0
 for pathInfo in pathInfos:
     if pathInfo not in copiedFiles:
         print('Not copied to nuget or framework folder: ' + pathInfo)
@@ -219,8 +218,7 @@ for pathInfo in pathInfos:
         if not os.path.exists(othersDir):
             os.makedirs(othersDir)
         shutil.copy2(pathInfos[pathInfo], othersDir)
-        exitCode = 1
 
 print("\n --> Generated structured stub files: " + stubsDir)
 
-exit(exitCode)
+exit(0)