Alerting: Add duration field to silence editor (#34029)

packages/grafana-data/src/datetime/durationutil.test.ts

@@ -0,0 +1,23 @@
+import { intervalToAbbreviatedDurationString, addDurationToDate, parseDuration } from './durationutil';
+
+describe('Duration util', () => {
+  describe('intervalToAbbreviatedDurationString', () => {
+    it('creates a duration string for a provided interval', () => {
+      const startDate = new Date();
+      const endDate = addDurationToDate(startDate, { months: 1, weeks: 1, days: 1, hours: 1, minutes: 1, seconds: 1 });
+      expect(intervalToAbbreviatedDurationString({ start: startDate, end: endDate })).toEqual('1M 8d 1h 1m 1s');
+    });
+  });
+
+  describe('parseDuration', () => {
+    it('parses a duration string', () => {
+      const durationString = '3M 5d 20m';
+      expect(parseDuration(durationString)).toEqual({ months: '3', days: '5', minutes: '20' });
+    });
+
+    it('strips out non valid durations', () => {
+      const durationString = '3M 6v 5b 4m';
+      expect(parseDuration(durationString)).toEqual({ months: '3', minutes: '4' });
+    });
+  });
+});