message: Fix completion tests
diff: @@ -7,6 +7,7 @@ import * as vscode from 'vscode'
  import {
  getFixtureDir,
  + promisify,
  // isDockerEnabled,
  runTestWithFixture,
  waitLatexWorkshopActivated
  @@ -56,7 +57,9 @@ suite('Completion test suite', () => {
  const texFileName = 't.tex'
  const texFilePath = vscode.Uri.file(path.join(fixtureDir, texFileName))
  const doc = await vscode.workspace.openTextDocument(texFilePath)
  + const rootFileFound = promisify('findrootfileend')
  await vscode.window.showTextDocument(doc)
  + await rootFileFound
  const extension = await waitLatexWorkshopActivated()
  const pos = new vscode.Position(3,1)
  const token = new vscode.CancellationTokenSource().token
  @@ -75,8 +78,10 @@ suite('Completion test suite', () => {
  const texFileName = 't.tex'
  const texFilePath = vscode.Uri.file(path.join(fixtureDir, texFileName))
  const doc = await vscode.workspace.openTextDocument(texFilePath)
  + const rootFileFound = promisify('findrootfileend')
  await vscode.window.showTextDocument(doc)
  const extension = await waitLatexWorkshopActivated()
  + await rootFileFound
  const pos = new vscode.Position(3,1)
  const token = new vscode.CancellationTokenSource().token
  const items = extension.exports.realExtension?.atSuggestionCompleter.provideCompletionItems(
  @@ -98,8 +103,10 @@ suite('Completion test suite', () => {
  const texFileName = 't.tex'
  const texFilePath = vscode.Uri.file(path.join(fixtureDir, texFileName))
  const doc = await vscode.workspace.openTextDocument(texFilePath)
  + const rootFileFound = promisify('findrootfileend')
  await vscode.window.showTextDocument(doc)
  const extension = await waitLatexWorkshopActivated()
  + await rootFileFound
  const pos = new vscode.Position(3,1)
  const token = new vscode.CancellationTokenSource().token
  const items = extension.exports.realExtension?.atSuggestionCompleter.provideCompletionItems(
  @@ -122,8 +129,10 @@ suite('Completion test suite', () => {
  const texFileName = 't.tex'
  const texFilePath = vscode.Uri.file(path.join(fixtureDir, texFileName))
  const doc = await vscode.workspace.openTextDocument(texFilePath)
  + const rootFileFound = promisify('findrootfileend')
  await vscode.window.showTextDocument(doc)
  const extension = await waitLatexWorkshopActivated()
  + await rootFileFound
  const pos = new vscode.Position(6,5)
  const token = new vscode.CancellationTokenSource().token
  const items = extension.exports.realExtension?.completer.provideCompletionItems(
  