Updated charts to allow optional pagination

test/utils/utils.test.js

@@ -8,6 +8,7 @@ import {
   determineOrderDir,
   fixLeafletIcons,
   rangeOf,
+  roundTen,
 } from '../../src/utils/utils';
 
 describe('utils', () => {
@@ -87,4 +88,21 @@ describe('utils', () => {
       ]);
     });
   });
+
+  describe('roundTen', () => {
+    it('rounds provided number to the next multiple of ten', () => {
+      const expectationsPairs = [
+        [ 10, 10 ],
+        [ 12, 20 ],
+        [ 158, 160 ],
+        [ 5, 10 ],
+        [ -42, -40 ],
+      ];
+
+      expect.assertions(expectationsPairs.length);
+      expectationsPairs.forEach(([ number, expected ]) => {
+        expect(roundTen(number)).toEqual(expected);
+      });
+    });
+  });
 });