Tests: Ensure no timers are running at the end of each test (#1920)

This helps fix issues that make tooltip tests sometimes fail when run against
jQuery 3.2 or newer due to timing differences.

Details:
* Add the `moduleAfterEach` function ensuring no timers are running.
* Attach this function via `common.testWidget`.
* Attach this function to most test suites.
* Add a tooltip test helper cleaning up leftover timers.
* Rename legacy `setup`/`teardown` hooks to `beforeEach`/`afterEach`.

Closes gh-1920

6 files changed, 56 insertions, 10 deletions

diff --git a/tests/unit/tooltip/core.js b/tests/unit/tooltip/core.js
index 2de37097a..c50164efa 100644
--- a/tests/unit/tooltip/core.js
+++ b/tests/unit/tooltip/core.js
@@ -1,10 +1,13 @@
 define( [
 	"qunit",
 	"jquery",
+	"./helper",
 	"ui/widgets/tooltip"
-], function( QUnit, $ ) {
+], function( QUnit, $, testHelper ) {
 
-QUnit.module( "tooltip: core" );
+var beforeAfterEach = testHelper.beforeAfterEach;
+
+QUnit.module( "tooltip: core", beforeAfterEach() );
 
 QUnit.test( "markup structure", function( assert ) {
 	assert.expect( 7 );
diff --git a/tests/unit/tooltip/deprecated.js b/tests/unit/tooltip/deprecated.js
index bce1a6c6a..b44b8dcd6 100644
--- a/tests/unit/tooltip/deprecated.js
+++ b/tests/unit/tooltip/deprecated.js
@@ -1,10 +1,13 @@
 define( [
 	"qunit",
 	"jquery",
+	"./helper",
 	"ui/widgets/tooltip"
-], function( QUnit, $ ) {
+], function( QUnit, $, testHelper ) {
 
-QUnit.module( "tooltip: (deprecated) options" );
+var beforeAfterEach = testHelper.beforeAfterEach;
+
+QUnit.module( "tooltip: (deprecated) options", beforeAfterEach() );
 
 QUnit.test( "tooltipClass", function( assert ) {
 	assert.expect( 1 );
diff --git a/tests/unit/tooltip/events.js b/tests/unit/tooltip/events.js
index 3fbb683a5..1e83c5255 100644
--- a/tests/unit/tooltip/events.js
+++ b/tests/unit/tooltip/events.js
@@ -1,10 +1,13 @@
 define( [
 	"qunit",
 	"jquery",
+	"./helper",
 	"ui/widgets/tooltip"
-], function( QUnit, $ ) {
+], function( QUnit, $, testHelper ) {
 
-QUnit.module( "tooltip: events" );
+var beforeAfterEach = testHelper.beforeAfterEach;
+
+QUnit.module( "tooltip: events", beforeAfterEach() );
 
 QUnit.test( "programmatic triggers", function( assert ) {
 	assert.expect( 4 );
diff --git a/tests/unit/tooltip/helper.js b/tests/unit/tooltip/helper.js
new file mode 100644
index 000000000..01d4c03ac
--- /dev/null
+++ b/tests/unit/tooltip/helper.js
@@ -0,0 +1,31 @@
+define( [
+	"qunit",
+	"jquery",
+	"lib/helper",
+	"ui/widgets/tooltip"
+], function( QUnit, $, helper ) {
+
+	return $.extend( helper, {
+		beforeAfterEach: function() {
+			return {
+				afterEach: function() {
+					var index, timer,
+						timers = jQuery.timers;
+
+					jQuery.fx.stop();
+					var x = false;
+
+					for ( index = timers.length; index--; ) {
+						x = true;
+						timer = timers[ index ];
+						timer.anim.stop();
+						timers.splice( index, 1 );
+					}
+
+					return helper.moduleAfterEach.apply( this, arguments );
+				}
+			};
+		}
+	} );
+
+} );
diff --git a/tests/unit/tooltip/methods.js b/tests/unit/tooltip/methods.js
index 6e0af2eb4..d71c5e0a6 100644
--- a/tests/unit/tooltip/methods.js
+++ b/tests/unit/tooltip/methods.js
@@ -1,10 +1,13 @@
 define( [
 	"qunit",
 	"jquery",
+	"./helper",
 	"ui/widgets/tooltip"
-], function( QUnit, $ ) {
+], function( QUnit, $, testHelper ) {
 
-QUnit.module( "tooltip: methods" );
+var beforeAfterEach = testHelper.beforeAfterEach;
+
+QUnit.module( "tooltip: methods", beforeAfterEach() );
 
 QUnit.test( "destroy", function( assert ) {
 	assert.expect( 3 );
diff --git a/tests/unit/tooltip/options.js b/tests/unit/tooltip/options.js
index 4354d89b3..b9c056388 100644
--- a/tests/unit/tooltip/options.js
+++ b/tests/unit/tooltip/options.js
@@ -1,10 +1,13 @@
 define( [
 	"qunit",
 	"jquery",
+	"./helper",
 	"ui/widgets/tooltip"
-], function( QUnit, $ ) {
+], function( QUnit, $, testHelper ) {
 
-QUnit.module( "tooltip: options" );
+var beforeAfterEach = testHelper.beforeAfterEach;
+
+QUnit.module( "tooltip: options", beforeAfterEach() );
 
 QUnit.test( "disabled: true", function( assert ) {
 	assert.expect( 1 );