Calendar: Should switch to the last date view in multiple & controlled mode (T1279950)

Author: Ruslan Farkhutdinov

packages/devextreme/js/__internal/ui/calendar/m_calendar.multiple.selection.strategy.ts

@@ -39,8 +39,8 @@ class CalendarMultiSelectionStrategy extends CalendarSelectionStrategy {
   }
 
   getDefaultCurrentDate() {
-    const dates = this.dateOption('value').filter((value) => value);
-    return this._getLowestDateInArray(dates);
+    const dates = this.dateOption('value').filter(Boolean);
+    return dates.length ? dates[dates.length - 1] : new Date();
   }
 
   restoreValue() {

packages/devextreme/testing/tests/DevExpress.ui.widgets.editors/calendar.tests.js

@@ -1383,6 +1383,27 @@ QUnit.module('Preserve time component on value change', {
 
         assert.deepEqual(calendar.option('value'), new Date(2015, 8, 2, 12, 57));
     });
+
+    QUnit.test('should switch to the last date after setting option programmatically (T1279950)', function(assert) {
+        this.reinit({
+            value: [new Date(2025, 1, 10), new Date(2025, 2, 10)],
+            selectionMode: 'multiple'
+        });
+
+        const calendar = this.calendar;
+
+        assert.ok(
+            dateUtils.sameMonth(calendar.option('currentDate'), new Date(2025, 2, 10)),
+            'initially navigated to the last date'
+        );
+
+        calendar.option('value', [new Date(2025, 4, 10), new Date(2025, 3, 10)]);
+
+        assert.ok(
+            dateUtils.sameMonth(calendar.option('currentDate'), new Date(2025, 3, 10)),
+            'switched to the last entered date'
+        );
+    });
 });