5 files changed, 5 insertions, 0 deletions
diff --git a/tests/unit/spinner/core.js b/tests/unit/spinner/core.js
index 6c8c9bdf3..e9f7bc3d2 100644
--- a/tests/unit/spinner/core.js
+++ b/tests/unit/spinner/core.js
@@ -5,6 +5,7 @@ define( [
 	"./helper",
 	"ui/widgets/spinner"
 ], function( QUnit, $, helper, testHelper ) {
+"use strict";
 
 var simulateKeyDownUp = testHelper.simulateKeyDownUp;
 
diff --git a/tests/unit/spinner/deprecated.js b/tests/unit/spinner/deprecated.js
index f259ceb2e..79700d116 100644
--- a/tests/unit/spinner/deprecated.js
+++ b/tests/unit/spinner/deprecated.js
@@ -4,6 +4,7 @@ define( [
 	"lib/helper",
 	"ui/widgets/spinner"
 ], function( QUnit, $, helper ) {
+"use strict";
 
 var originalSpinner = $.ui.spinner.prototype;
 QUnit.module( "spinner: deprecated", {
diff --git a/tests/unit/spinner/events.js b/tests/unit/spinner/events.js
index 9583a9ec2..833b12adf 100644
--- a/tests/unit/spinner/events.js
+++ b/tests/unit/spinner/events.js
@@ -5,6 +5,7 @@ define( [
 	"./helper",
 	"ui/widgets/spinner"
 ], function( QUnit, $, helper, testHelper ) {
+"use strict";
 
 var simulateKeyDownUp = testHelper.simulateKeyDownUp;
 
diff --git a/tests/unit/spinner/methods.js b/tests/unit/spinner/methods.js
index 8af1a6b6e..3ba8b69d1 100644
--- a/tests/unit/spinner/methods.js
+++ b/tests/unit/spinner/methods.js
@@ -5,6 +5,7 @@ define( [
 	"./helper",
 	"ui/widgets/spinner"
 ], function( QUnit, $, helper, testHelper ) {
+"use strict";
 
 var simulateKeyDownUp = testHelper.simulateKeyDownUp;
 
diff --git a/tests/unit/spinner/options.js b/tests/unit/spinner/options.js
index 7d802b2a4..51d8589fd 100644
--- a/tests/unit/spinner/options.js
+++ b/tests/unit/spinner/options.js
@@ -6,6 +6,7 @@ define( [
 	"globalize",
 	"globalize/ja-JP"
 ], function( QUnit, $, helper ) {
+"use strict";
 
 QUnit.module( "spinner: options", { afterEach: helper.moduleAfterEach }  );