Move shlink-web-component tests to their own folder

shlink-web-component/test/utils/helpers/numbers.test.ts

@@ -0,0 +1,20 @@
+import { roundTen } from '../../../src/utils/helpers/numbers';
+
+describe('numbers', () => {
+  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);
+      });
+    });
+  });
+});