bc518174
 王天杨
提交两个项目文件
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import { enGB, enUS } from 'date-fns/locale';
import { getMonthWeeks } from './getMonthWeeks';
describe('when using the "enUS" locale', () => {
const locale = enUS;
describe('when using fixed weeks', () => {
const useFixedWeeks = true;
describe('when getting the weeks for December 2022', () => {
const date = new Date(2022, 11);
const weeks = getMonthWeeks(date, { useFixedWeeks, locale });
test('should return 49 - 1 week numbers', () => {
const weekNumbers = weeks.map((week) => week.weekNumber);
const expectedResult = [49, 50, 51, 52, 53, 1];
expect(weekNumbers).toEqual(expectedResult);
});
test('the last week should be the one in the next year', () => {
const lastWeek = weeks[weeks.length - 1];
const lastWeekDates = lastWeek.dates.map((date) => date.getDate());
const expectedResult = [1, 2, 3, 4, 5, 6, 7];
expect(lastWeekDates).toEqual(expectedResult);
});
});
describe('when getting the weeks for December 2021', () => {
const weeks = getMonthWeeks(new Date(2021, 11), {
useFixedWeeks: false,
locale: enUS
});
test('should return 49 - 1 week numbers', () => {
const weekNumbers = weeks.map((week) => week.weekNumber);
const expectedResult = [49, 50, 51, 52, 1];
expect(weekNumbers).toEqual(expectedResult);
});
test('the last week should be the last in the year', () => {
const lastWeek = weeks[weeks.length - 1];
const lastWeekDates = lastWeek.dates.map((date) => date.getDate());
const expectedResult = [26, 27, 28, 29, 30, 31, 1];
expect(lastWeekDates).toEqual(expectedResult);
});
test('week 1 contains the first day of the new year', () => {
expect(weeks[4].dates.map((date) => date.getDate())).toEqual([
26, 27, 28, 29, 30, 31, 1
]);
});
});
});
});
describe('when using the "enGB" locale', () => {
const locale = enGB;
describe('when getting the weeks for January 2022', () => {
const date = new Date(2022, 0);
const weeks = getMonthWeeks(date, { locale });
test('the first week should be the last of the previous year', () => {
const weekNumbers = weeks.map((week) => week.weekNumber);
expect(weekNumbers[0]).toEqual(52);
});
test('the first week should contain days from previous year', () => {
expect(weeks[0].dates.map((date) => date.getDate())).toEqual([
27, 28, 29, 30, 31, 1, 2
]);
});
test('the last week should be the last of January', () => {
const weekNumbers = weeks.map((week) => week.weekNumber);
expect(weekNumbers[weekNumbers.length - 1]).toEqual(5);
});
});
describe('when setting thursday as first day of year', () => {
const date = new Date(2022, 0);
const weeks = getMonthWeeks(date, { locale, firstWeekContainsDate: 4 });
test('the number of week should have number 52', () => {
const weekNumbers = weeks.map((week) => week.weekNumber);
expect(weekNumbers[0]).toEqual(52);
});
});
});
describe('when using the ISOWeek numbers', () => {
const locale = enUS;
describe('when getting the weeks for September 2022', () => {
const date = new Date(2022, 8);
const weeks = getMonthWeeks(date, { locale, ISOWeek: true });
test('the last week should have number 39', () => {
const weekNumbers = weeks.map((week) => week.weekNumber);
expect(weekNumbers[weekNumbers.length - 1]).toEqual(39);
});
});
});
describe('when not using the ISOWeek numbers', () => {
const locale = enUS;
describe('when getting the weeks for September 2022', () => {
const date = new Date(2022, 8);
const weeks = getMonthWeeks(date, { locale, ISOWeek: false });
test('the last week should have number 40', () => {
const weekNumbers = weeks.map((week) => week.weekNumber);
expect(weekNumbers[weekNumbers.length - 1]).toEqual(40);
});
});
});
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