(core) Fix flaky tests

Summary:
The Ace autocomplete sometimes doesn't appear if keys are entered too quickly.

A larger fixture document (World) used in the Importer2 tests sometimes takes longer than 5 seconds to import.

Test Plan: N/A

Reviewers: paulfitz

Reviewed By: paulfitz

Subscribers: paulfitz

Differential Revision: https://phab.getgrist.com/D4245

test/nbrowser/DropdownConditionEditor.ts

@@ -19,6 +19,7 @@ describe('DropdownConditionEditor', function () {
       await gu.getCell(1, 1).click();
       assert.isFalse(await driver.find('.test-field-dropdown-condition').isPresent());
       await driver.find('.test-field-set-dropdown-condition').click();
+      await gu.waitAppFocus(false);
       await gu.sendKeys('c');
       await gu.waitToPass(async () => {
         const completions = await driver.findAll('.ace_autocomplete .ace_line', el => el.getText());
@@ -29,7 +30,7 @@ describe('DropdownConditionEditor', function () {
           're\nc\n.Supervisor\n ',
         ]);
       });
-      await gu.sendKeys('hoice not in $');
+      await gu.sendKeysSlowly(['hoice not in $']);
       await gu.waitToPass(async () => {
         const completions = await driver.findAll('.ace_autocomplete .ace_line', el => el.getText());
         assert.deepEqual(completions, [
@@ -144,7 +145,8 @@ describe('DropdownConditionEditor', function () {
       await gu.getCell(2, 1).click();
       assert.isFalse(await driver.find('.test-field-dropdown-condition').isPresent());
       await driver.find('.test-field-set-dropdown-condition').click();
-      await gu.sendKeys('choice');
+      await gu.waitAppFocus(false);
+      await gu.sendKeysSlowly(['choice']);
       await gu.waitToPass(async () => {
         const completions = await driver.findAll('.ace_autocomplete .ace_line', el => el.getText());
         assert.deepEqual(completions, [

test/nbrowser/Importer2.ts

@@ -595,7 +595,7 @@ describe('Importer2', function() {
 
       // Finish importing, and check that the destination tables have the correct data.
       await driver.find('.test-modal-confirm').click();
-      await gu.waitForServer();
+      await gu.waitForServer(10_000);
       assert.deepEqual(await gu.getPageNames(), [
         'Table1',
         'Table1',

test/nbrowser/gristUtils.ts

@@ -1751,6 +1751,16 @@ export async function sendKeys(...keys: string[]) {
   });
 }
 
+/**
+ * Send keys with a pause between each key.
+ */
+export async function sendKeysSlowly(keys: string[], delayMs = 40) {
+  for (const [i, key] of keys.entries()) {
+    await sendKeys(key);
+    if (i < keys.length - 1) { await driver.sleep(delayMs); }
+  }
+}
+
 /**
  * Clears active input/textarea.
  */