Move test

packages/shared-domain/src/utils/date.test.ts

@@ -1,4 +1,4 @@
-import { getIso8601String } from './date';
+import { generateWeeklyPeriods, getIso8601String } from './date';
 
 describe('date.ts', () => {
   describe('getIso8601String', () => {
@@ -9,3 +9,58 @@ describe('date.ts', () => {
     });
   });
 });
+
+describe('generateWeeklyPeriods function', () => {
+  it('should return an empty array if no date is provided', () => {
+    const result = generateWeeklyPeriods();
+    expect(result).toEqual([]);
+  });
+
+  it('should return an array with one period when numberOfPeriods is not provided', () => {
+    const result = generateWeeklyPeriods('2024-03-01');
+    expect(result.length).toBe(1);
+  });
+
+  it('should return an array of weekly periods', () => {
+    const result = generateWeeklyPeriods('2023-03-01', 3);
+
+    const expectedPeriods = [
+      {
+        periodFrom: new Date('2023-02-28T23:00:00.000Z'), // Wednesday
+        periodTo: new Date('2023-03-04T23:00:00.000Z'), // Sunday
+        id: expect.any(String),
+      },
+      {
+        periodFrom: new Date('2023-03-05T23:00:00.000Z'), // Monday
+        periodTo: new Date('2023-03-11T23:00:00.000Z'), // Sunday
+        id: expect.any(String),
+      },
+      {
+        periodFrom: new Date('2023-03-12T23:00:00.000Z'), // Monday
+        periodTo: new Date('2023-03-18T23:00:00.000Z'), // Sunday
+        id: expect.any(String),
+      },
+    ];
+    expect(result).toEqual(expectedPeriods);
+  });
+
+  it('should return an array with correct number of periods when number of periods is provided', () => {
+    const numberOfPeriods = 5;
+    const result = generateWeeklyPeriods('2023-03-01', numberOfPeriods);
+    expect(result.length).toEqual(numberOfPeriods);
+  });
+
+  it('should have todays date as the last periodTo', () => {
+    const today = new Date();
+    today.setHours(0, 0, 0, 0);
+
+    const tenDaysAgo = new Date(today);
+    tenDaysAgo.setDate(today.getDate() - 10);
+
+    const result = generateWeeklyPeriods(tenDaysAgo.toISOString(), 3);
+
+    const lastPeriodTo = new Date(result[result.length - 1].periodTo);
+
+    expect(lastPeriodTo.toISOString()).toEqual(today.toISOString());
+  });
+});