Merge pull request #3582 from YuCJ/master

fix: formatFunc should take source params

Author: martijnrusschen

src/date_utils.js

@@ -377,7 +377,7 @@ export function getLocaleObject(localeSpec) {
 }
 
 export function getFormattedWeekdayInLocale(date, formatFunc, locale) {
-  return formatFunc(formatDate(date, "EEEE", locale));
+  return typeof formatFunc === "function" ? formatFunc(date, locale) : formatDate(date, "EEEE", locale);
 }
 
 export function getWeekdayMinInLocale(date, locale) {

test/calendar_test.js

@@ -162,10 +162,15 @@ describe("Calendar", function () {
   });
 
   it("should correctly format weekday using formatWeekDay prop", function () {
-    const calendar = getCalendar({ formatWeekDay: (day) => day[0] });
+    const mockFormattedWeekDay = "mockFormattedWeekDay";
+    const formatWeekDay = sinon.fake.returns(mockFormattedWeekDay);
+    const calendar = getCalendar({ formatWeekDay });
+    sinon.assert.alwaysCalledWith(formatWeekDay, sinon.match.date);
     calendar
       .find(".react-datepicker__day-name")
-      .forEach((dayName) => expect(dayName.text()).to.have.length(1));
+      .forEach((dayName) =>
+        expect(dayName.text()).to.equals(mockFormattedWeekDay)
+      );
   });
 
   it("should contain the correct class when using the weekDayClassName prop", () => {