Clarify how to run CLI tests locally

Also, remove an errant `only`, which was preventing some tests from
running.

.vscode/launch.json

@@ -89,6 +89,9 @@
         "--extensionDevelopmentPath=${workspaceRoot}/extensions/ql-vscode",
         "--extensionTestsPath=${workspaceRoot}/extensions/ql-vscode/out/vscode-tests/cli-integration/index",
         "${workspaceRoot}/extensions/ql-vscode/src/vscode-tests/cli-integration/data",
+        // Add a path to a checked out instance of the codeql repository so the libraries are
+        // available in the workspace for the tests.
+        // "${workspaceRoot}/../codeql"
       ],
       "stopOnEntry": false,
       "sourceMaps": true,

extensions/ql-vscode/src/vscode-tests/cli-integration/run-cli.test.ts

@@ -40,7 +40,7 @@ describe('Use cli', function() {
     ]);
   });
 
-  it.only('should resolve query packs', async function() {
+  it('should resolve query packs', async function() {
     skipIfNoCodeQL(this);
     const qlpacks = await cli.resolveQlpacks(getOnDiskWorkspaceFolders());
     // should have a bunch of qlpacks. just check that a few known ones exist

extensions/ql-vscode/src/vscode-tests/ensureCli.ts

@@ -72,7 +72,7 @@ export async function ensureCli(useCli: boolean) {
       console.log('Total content size', Math.round(contentLength / _1MB), 'MB');
       const archiveFile = fs.createWriteStream(downloadedFilePath);
       const body = assetStream.body;
-      await new Promise((resolve, reject) => {
+      await new Promise<void>((resolve, reject) => {
         let numBytesDownloaded = 0;
         let lastMessage = 0;
         body.on('data', (data) => {
@@ -117,7 +117,11 @@ function hasCodeQL() {
 
 export function skipIfNoCodeQL(context: Mocha.Context) {
   if (!hasCodeQL()) {
-    console.log('The CodeQL libraries are not available as a folder in this workspace. To fix: checkout the github/codeql repository and set the TEST_CODEQL_PATH environment variable to the checked out directory.');
+    console.log([
+      'The CodeQL libraries are not available as a folder in this workspace.',
+      'To fix in CI: checkout the github/codeql repository and set the \'TEST_CODEQL_PATH\' environment variable to the checked out directory.',
+      'To fix when running from vs code, see the comment in the launch.json file in the \'Launch Integration Tests - With CLI\' section.'
+    ].join('\n\n'));
     context.skip();
   }
 }