Add a test of runVariantAnalysisFromPublishedPack

extensions/ql-vscode/src/variant-analysis/variant-analysis-manager.ts

@@ -214,7 +214,7 @@ export class VariantAnalysisManager
     }
   }
 
-  private async runVariantAnalysisFromPublishedPack(): Promise<void> {
+  public async runVariantAnalysisFromPublishedPack(): Promise<void> {
     return withProgress(async (progress, token) => {
       progress({
         maxStep: 8,

extensions/ql-vscode/test/vscode-tests/cli-integration/variant-analysis/variant-analysis-manager.test.ts

@@ -388,4 +388,37 @@ describe("Variant Analysis Manager", () => {
       }
     }
   });
+
+  describe("runVariantAnalysisFromPublishedPack", () => {
+    it("should download pack for correct language and identify problem queries", async () => {
+      const showQuickPickSpy = jest
+        .spyOn(window, "showQuickPick")
+        .mockResolvedValue(
+          mockedQuickPickItem({
+            label: "JavaScript",
+            description: "javascript",
+            language: "javascript",
+          }),
+        );
+
+      const runVariantAnalysisMock = jest.fn();
+      variantAnalysisManager.runVariantAnalysis = runVariantAnalysisMock;
+
+      await variantAnalysisManager.runVariantAnalysisFromPublishedPack();
+
+      expect(showQuickPickSpy).toHaveBeenCalledTimes(1);
+      expect(runVariantAnalysisMock).toHaveBeenCalledTimes(1);
+
+      const queries: Uri[] = runVariantAnalysisMock.mock.calls[0][0];
+      // Should include queries. Just check that at least one known query exists.
+      // It doesn't particularly matter which query we check for.
+      expect(
+        queries.find((q) => q.fsPath.includes("CWE-201/PostMessageStar.ql")),
+      ).toBeDefined();
+      // Should not include non-problem queries.
+      expect(
+        queries.find((q) => q.fsPath.includes("LinesOfCode.ql")),
+      ).not.toBeDefined();
+    });
+  });
 });