Fix failing tests on windows

1. Acknowledge that the CLI has a bug for path serialization on <=2.7.2.
   Avoid testing the query path on that version.
2. Fix calculation of root path on windows.

extensions/ql-vscode/src/run-remote-query.ts

@@ -17,12 +17,12 @@ interface Config {
   language?: string;
 }
 
-interface QlPack {
+export interface QlPack {
   name: string;
   version: string;
   dependencies: { [key: string]: string };
   defaultSuite?: Record<string, unknown>[];
-  defaultSuiteFile?: Record<string, unknown>;
+  defaultSuiteFile?: string;
 }
 interface RepoListQuickPickItem extends QuickPickItem {
   repoList: string[];
@@ -195,7 +195,7 @@ async function findPackRoot(queryFile: string): Promise<string> {
   let dir = path.dirname(queryFile);
   while (!(await fs.pathExists(path.join(dir, 'qlpack.yml')))) {
     dir = path.dirname(dir);
-    if (dir === '/') {
+    if (isFileSystemRoot(dir)) {
       // there is no qlpack.yml in this direcory or any parent directory.
       // just use the query file's directory as the pack root.
       return path.dirname(queryFile);
@@ -205,6 +205,11 @@ async function findPackRoot(queryFile: string): Promise<string> {
   return dir;
 }
 
+function isFileSystemRoot(dir: string): boolean {
+  const pathObj = path.parse(dir);
+  return pathObj.root === dir && pathObj.base === '';
+}
+
 async function createRemoteQueriesTempDirectory() {
   const remoteQueryDir = await tmp.dir({ dir: tmpDir.name, unsafeCleanup: true });
   const queryPackDir = path.join(remoteQueryDir.path, 'query-pack');
@@ -445,7 +450,7 @@ async function fixDefaultSuite(queryPackDir: string, packRelativePath: string):
   qlpack.defaultSuite = [{
     description: 'Query suite for remote query'
   }, {
-    query: packRelativePath.replace('\\', '/')
+    query: packRelativePath.replace(/\\/g, '/')
   }];
   await fs.writeFile(packPath, yaml.safeDump(qlpack));
 }

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

@@ -4,14 +4,16 @@ import * as sinon from 'sinon';
 import { CancellationToken, extensions, QuickPickItem, Uri, window } from 'vscode';
 import 'mocha';
 import * as fs from 'fs-extra';
+import * as os from 'os';
 import * as yaml from 'js-yaml';
 
-import { runRemoteQuery } from '../../run-remote-query';
+import { QlPack, runRemoteQuery } from '../../run-remote-query';
 import { Credentials } from '../../authentication';
 import { CliVersionConstraint, CodeQLCliServer } from '../../cli';
 import { CodeQLExtensionInterface } from '../../extension';
 import { setRemoteControllerRepo, setRemoteRepositoryLists } from '../../config';
 import { UserCancellationException } from '../../commandRunner';
+import { lte } from 'semver';
 
 describe('Remote queries', function() {
   const baseDir = path.join(__dirname, '../../../src/vscode-tests/cli-integration');
@@ -104,7 +106,7 @@ describe('Remote queries', function() {
       fs.existsSync(path.join(compiledPackDir, 'codeql-pack.lock.yml'))
     ).to.be.true;
     expect(fs.existsSync(path.join(compiledPackDir, 'not-in-pack.ql'))).to.be.false;
-    verifyQlPack(path.join(compiledPackDir, 'qlpack.yml'), 'in-pack.ql', 'github/remote-query-pack', '0.0.0');
+    verifyQlPack(path.join(compiledPackDir, 'qlpack.yml'), 'in-pack.ql', 'github/remote-query-pack', '0.0.0', await pathSerializationBroken());
 
     // dependencies
     const libraryDir = path.join(compiledPackDir, '.codeql/libraries/codeql');
@@ -145,7 +147,7 @@ describe('Remote queries', function() {
     printDirectoryContents(compiledPackDir);
     expect(fs.existsSync(path.join(compiledPackDir, 'in-pack.ql'))).to.be.true;
     expect(fs.existsSync(path.join(compiledPackDir, 'qlpack.yml'))).to.be.true;
-    verifyQlPack(path.join(compiledPackDir, 'qlpack.yml'), 'in-pack.ql', 'codeql-remote/query', '0.0.0');
+    verifyQlPack(path.join(compiledPackDir, 'qlpack.yml'), 'in-pack.ql', 'codeql-remote/query', '0.0.0', await pathSerializationBroken());
 
     // depending on the cli version, we should have one of these files
     expect(
@@ -200,7 +202,7 @@ describe('Remote queries', function() {
     expect(fs.existsSync(path.join(compiledPackDir, 'otherfolder/lib.qll'))).to.be.true;
     expect(fs.existsSync(path.join(compiledPackDir, 'subfolder/in-pack.ql'))).to.be.true;
     expect(fs.existsSync(path.join(compiledPackDir, 'qlpack.yml'))).to.be.true;
-    verifyQlPack(path.join(compiledPackDir, 'qlpack.yml'), 'subfolder/in-pack.ql', 'github/remote-query-pack', '0.0.0');
+    verifyQlPack(path.join(compiledPackDir, 'qlpack.yml'), 'subfolder/in-pack.ql', 'github/remote-query-pack', '0.0.0', await pathSerializationBroken());
 
     // depending on the cli version, we should have one of these files
     expect(
@@ -236,8 +238,13 @@ describe('Remote queries', function() {
     }
   });
 
-  function verifyQlPack(qlpackPath: string, queryPath: string, packName: string, packVersion: string) {
+  function verifyQlPack(qlpackPath: string, queryPath: string, packName: string, packVersion: string, pathSerializationBroken: boolean) {
-    const qlPack = yaml.safeLoad(fs.readFileSync(qlpackPath, 'utf8'));
+    const qlPack = yaml.safeLoad(fs.readFileSync(qlpackPath, 'utf8')) as QlPack;
+
+    if (pathSerializationBroken) {
+      // the path serialization is broken, so we force it to be the path in the pack to be same as the query path
+      qlPack.defaultSuite![1].query = queryPath;
+    }
 
     // don't check the build metadata since it is variable
     delete (qlPack as any).buildMetadata;
@@ -257,6 +264,15 @@ describe('Remote queries', function() {
     });
   }
 
+  /**
+   * In version 2.7.2 and earlier, relative paths were not serialized correctly inside the qlpack.yml file.
+   * So, ignore part of the test for these versions.
+   *
+   * @returns true if path serialization is broken in this run
+   */
+  async function pathSerializationBroken() {
+    return lte((await cli.getVersion()), '2.7.2') && os.platform() === 'win32';
+  }
   function getFile(file: string): Uri {
     return Uri.file(path.join(baseDir, file));
   }