Bug 1483212 - Fix DAMP webconsole autocomplete test on Beta; r=bgrins.

In beta, we still have the old jsterm, so we need to adjust
the test code in this case. Which means reverting back
to what we were doing: manually triggering the autocompletion
start by calling updateAutoCompletion.

Differential Revision: https://phabricator.services.mozilla.com/D3350

--HG--
extra : moz-landing-system : lando

testing/talos/talos/tests/devtools/addon/content/tests/webconsole/autocomplete.js

@@ -54,15 +54,31 @@ async function showAndHideAutoCompletePopup(jsterm) {
 async function triggerAutocompletePopup(jsterm) {
   const onPopupOpened = jsterm.autocompletePopup.once("popup-opened");
   jsterm.setInputValue("window.autocompleteTest.");
+  if (!jsterm.editor) {
+    // setInputValue does not trigger the autocompletion in the old jsterm;
+    // we need to call `updateAutocompletion` in order to display the popup. And since
+    // setInputValue sets lastInputValue and updateAutocompletion checks it to trigger
+    // the autocompletion request, we reset it.
+    jsterm.lastInputValue = null;
+    jsterm.updateAutocompletion();
+  }
   await onPopupOpened;
 
   const onPopupUpdated = jsterm.once("autocomplete-updated");
   jsterm.setInputValue("window.autocompleteTest.item9");
+  if (!jsterm.editor) {
+    jsterm.lastInputValue = null;
+    jsterm.updateAutocompletion();
+  }
   await onPopupUpdated;
 }
 
 function hideAutocompletePopup(jsterm) {
   let onPopUpClosed = jsterm.autocompletePopup.once("popup-closed");
   jsterm.setInputValue("");
+  if (!jsterm.editor) {
+    jsterm.lastInputValue = null;
+    jsterm.updateAutocompletion();
+  }
   return onPopUpClosed;
 }