Merge branch 'breakpoint-checker-performance' into 'master'

Increase performance of the breakpoint size checker

See merge request !13454

2 files changed, 16 insertions, 1 deletions

diff --git a/spec/javascripts/breakpoints_spec.js b/spec/javascripts/breakpoints_spec.js
new file mode 100644
index 00000000000..b1b5d36c1fb
--- /dev/null
+++ b/spec/javascripts/breakpoints_spec.js
@@ -0,0 +1,15 @@
+import bp, {
+  breakpoints,
+} from '~/breakpoints';
+
+describe('breakpoints', () => {
+  Object.keys(breakpoints).forEach((key) => {
+    const size = breakpoints[key];
+
+    it(`returns ${key} when larger than ${size}`, () => {
+      spyOn(bp, 'windowWidth').and.returnValue(size + 10);
+
+      expect(bp.getBreakpointSize()).toBe(key);
+    });
+  });
+});
diff --git a/spec/javascripts/fly_out_nav_spec.js b/spec/javascripts/fly_out_nav_spec.js
index d7b7acaa3f4..e44d874ad2b 100644
--- a/spec/javascripts/fly_out_nav_spec.js
+++ b/spec/javascripts/fly_out_nav_spec.js
@@ -1,4 +1,3 @@
-/* global bp */
 import Cookies from 'js-cookie';
 import {
   calculateTop,
@@ -7,6 +6,7 @@ import {
   canShowSubItems,
   canShowActiveSubItems,
 } from '~/fly_out_nav';
+import bp from '~/breakpoints';
 
 describe('Fly out sidebar navigation', () => {
   let el;