New Example - Calendar (#91)

flutter_date_pickers-master/test/day_selectable_test.dart

@@ -0,0 +1,31 @@
+import 'package:flutter_date_pickers/src/day_type.dart';
+import 'package:flutter_date_pickers/src/i_selectable_picker.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+import 'date_time_utils.dart';
+
+void main() {
+  group("DaySelectable test.", () {
+    test("getDayType() returns correct type for different dates", () {
+      final selectedDate = DateTime.now();
+      final firstDate = selectedDate.subtract(const Duration(days: 10));
+      final lastDate = selectedDate.add(const Duration(days: 10));
+      final disabledDate = selectedDate.subtract(const Duration(days: 1));
+
+      // ignore: prefer_function_declarations_over_variables
+      final selectablePredicate = (DateTime d)
+        => !DateTimeUtils.sameDate(d, disabledDate);
+
+      final selectableLogic = DaySelectable(
+          selectedDate, firstDate, lastDate,
+          selectableDayPredicate: selectablePredicate);
+      final selectedDateType = selectableLogic.getDayType(selectedDate);
+      final notSelectedEnabledDateType = selectableLogic.getDayType(firstDate);
+      final disabledDateType = selectableLogic.getDayType(disabledDate);
+
+      expect(selectedDateType, DayType.single);
+      expect(notSelectedEnabledDateType, DayType.notSelected);
+      expect(disabledDateType, DayType.disabled);
+    });
+  });
+}