Change how we check for relevant ql packs

extensions/ql-vscode/src/qltest-discovery.ts

@@ -1,7 +1,7 @@
 import * as path from 'path';
 import { QLPackDiscovery, QLPack } from './qlpack-discovery';
 import { Discovery } from './discovery';
-import { EventEmitter, Event, Uri, RelativePattern, WorkspaceFolder, env } from 'vscode';
+import { EventEmitter, Event, Uri, RelativePattern, WorkspaceFolder, env, workspace } from 'vscode';
 import { MultiFileSystemWatcher } from './vscode-utils/multi-file-system-watcher';
 import { CodeQLCliServer } from './cli';
 
@@ -180,7 +180,7 @@ export class QLTestDiscovery extends Discovery<QLTestDiscoveryResults> {
    */
   private isRelevantQlPack(qlPack: QLPack): boolean {
     return qlPack.name.endsWith('-tests')
-      && qlPack.uri.fsPath.startsWith(this.workspaceFolder.uri.fsPath);
+      && workspace.getWorkspaceFolder(qlPack.uri)?.index === this.workspaceFolder.index;
   }
 
   /**

extensions/ql-vscode/src/vscode-tests/minimal-workspace/qltest-discovery.test.ts

@@ -1,6 +1,7 @@
 import 'vscode-test';
 import 'mocha';
-import { Uri } from 'vscode';
+import * as path from 'path';
+import { Uri, workspace } from 'vscode';
 import { expect } from 'chai';
 
 import { QLTestDiscovery } from '../../qltest-discovery';
@@ -10,28 +11,29 @@ describe('qltest-discovery', () => {
     it('should check if a qlpack is relevant', () => {
       const qlTestDiscover: any = new QLTestDiscovery(
         { onDidChangeQLPacks: () => ({}) } as any,
-        { uri: Uri.parse('file:///a/b/c') } as any,
+        { index: 0 } as any,
         {} as any
       );
 
+      const uri = workspace.workspaceFolders![0].uri;
       expect(qlTestDiscover.isRelevantQlPack({
         name: '-hucairz',
-        uri: Uri.parse('file:///a/b/c/d')
+        uri
       })).to.be.false;
 
       expect(qlTestDiscover.isRelevantQlPack({
         name: '-tests',
-        uri: Uri.parse('file:///a/b/')
+        uri: Uri.file('/a/b/')
       })).to.be.false;
 
       expect(qlTestDiscover.isRelevantQlPack({
         name: '-tests',
-        uri: Uri.parse('file:///a/b/c')
+        uri
       })).to.be.true;
 
       expect(qlTestDiscover.isRelevantQlPack({
         name: '-tests',
-        uri: Uri.parse('file:///a/b/c/d')
+        uri: Uri.file(path.join(uri.fsPath, 'other'))
       })).to.be.true;
     });
   });