Fix tests with workspaceContains:.git activation event

It seems like changes to the CLI path setting are not picked up by the
extension when it is already activated. This is probably because the
`workspace.onDidChangeConfiguration` event is not fired when the update
is made programmatically.

This fixes it by manually firing the event so that all listeners (CLI
server, query server, IDE server) can pick up the change.

extensions/ql-vscode/package.json

@@ -39,7 +39,8 @@
     "onWebviewPanel:resultsView",
     "onWebviewPanel:codeQL.variantAnalysis",
     "onWebviewPanel:codeQL.dataFlowPaths",
-    "onFileSystem:codeql-zip-archive"
+    "onFileSystem:codeql-zip-archive",
+    "workspaceContains:.git"
   ],
   "main": "./out/extension",
   "files": [

extensions/ql-vscode/src/codeql-cli/cli.ts

@@ -241,15 +241,11 @@ export class CodeQLCliServer implements Disposable {
     if (this.distributionProvider.onDidChangeDistribution) {
       this.distributionProvider.onDidChangeDistribution(() => {
         this.restartCliServer();
-        this._version = undefined;
-        this._supportedLanguages = undefined;
       });
     }
     if (this.cliConfig.onDidChangeConfiguration) {
       this.cliConfig.onDidChangeConfiguration(() => {
         this.restartCliServer();
-        this._version = undefined;
-        this._supportedLanguages = undefined;
       });
     }
   }
@@ -290,6 +286,8 @@ export class CodeQLCliServer implements Disposable {
     const callback = (): void => {
       try {
         this.killProcessIfRunning();
+        this._version = undefined;
+        this._supportedLanguages = undefined;
       } finally {
         this.runNext();
       }

extensions/ql-vscode/test/vscode-tests/cli-integration/databases/database-fetcher.test.ts

@@ -15,6 +15,7 @@ import {
   storagePath,
 } from "../../global.helper";
 import { createMockCommandManager } from "../../../__mocks__/commandsMock";
+import { ensureDir, remove } from "fs-extra";
 
 /**
  * Run various integration tests for databases
@@ -41,6 +42,8 @@ describe("database-fetcher", () => {
 
   afterEach(async () => {
     await cleanDatabases(databaseManager);
+    await remove(storagePath);
+    await ensureDir(storagePath);
   });
 
   describe("importArchiveDatabase", () => {

extensions/ql-vscode/test/vscode-tests/cli-integration/jest.setup.ts

@@ -7,7 +7,7 @@ import {
 } from "../jest.activated-extension.setup";
 import { createWriteStream, existsSync, mkdirpSync } from "fs-extra";
 import { dirname } from "path";
-import { DB_URL, dbLoc } from "../global.helper";
+import { DB_URL, dbLoc, getActivatedExtension } from "../global.helper";
 import fetch from "node-fetch";
 
 beforeAll(async () => {
@@ -31,6 +31,25 @@ beforeAll(async () => {
   }
 
   await beforeAllAction();
+
+  // Activate the extension
+  const extension = await getActivatedExtension();
+
+  if (process.env.CLI_VERSION && process.env.CLI_VERSION !== "nightly") {
+    const cliVersion = await extension.cliServer.getVersion();
+
+    if (cliVersion.compare(process.env.CLI_VERSION) !== 0) {
+      // This calls the private `updateConfiguration` method in the `ConfigListener`
+      // It seems like the CUSTOM_CODEQL_PATH_SETTING.updateValue() call in
+      // `beforeAllAction` doesn't fire the event that the config has changed.
+      // This is a hacky workaround.
+      (
+        extension.distributionManager.config as unknown as {
+          updateConfiguration: () => void;
+        }
+      ).updateConfiguration();
+    }
+  }
 });
 
 beforeEach(async () => {