calendar_page_test.dart
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// Copyright 2019 Aleksander Woźniak
// SPDX-License-Identifier: Apache-2.0
import 'package:flutter/material.dart';
import 'package:flutter/widgets.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:table_calendar/src/widgets/calendar_page.dart';
Widget setupTestWidget(Widget child) {
return Directionality(
textDirection: TextDirection.ltr,
child: child,
);
}
List<DateTime> visibleDays = getDaysInRange(
DateTime.utc(2021, 6, 27),
DateTime.utc(2021, 7, 31),
);
List<DateTime> getDaysInRange(DateTime first, DateTime last) {
final dayCount = last.difference(first).inDays + 1;
return List.generate(
dayCount,
(index) => DateTime.utc(first.year, first.month, first.day + index),
);
}
void main() {
testWidgets(
'CalendarPage lays out all the visible days',
(tester) async {
await tester.pumpWidget(
setupTestWidget(
CalendarPage(
visibleDays: visibleDays,
dayBuilder: (context, day) {
return Text('${day.day}');
},
dowVisible: false,
),
),
);
final expectedCellCount = visibleDays.length;
expect(find.byType(Text), findsNWidgets(expectedCellCount));
},
);
testWidgets(
'CalendarPage lays out 7 DOW labels',
(tester) async {
await tester.pumpWidget(
setupTestWidget(
CalendarPage(
visibleDays: visibleDays,
dayBuilder: (context, day) {
return Text('${day.day}');
},
dowBuilder: (context, day) {
return Text('${day.weekday}');
},
dowHeight: 5,
),
),
);
final expectedCellCount = visibleDays.length;
const expectedDowLabels = 7;
expect(
find.byType(Text),
findsNWidgets(expectedCellCount + expectedDowLabels),
);
},
);
testWidgets(
'Throw AssertionError when CalendarPage is built with dowVisible set to true, but dowBuilder is absent',
(tester) async {
expect(
() async {
await tester.pumpWidget(
setupTestWidget(
CalendarPage(
visibleDays: visibleDays,
dayBuilder: (context, day) {
return Text('${day.day}');
},
),
),
);
},
throwsAssertionError,
);
},
);
testWidgets(
'Week numbers are not visible by default',
(tester) async {
await tester.pumpWidget(
setupTestWidget(
CalendarPage(
visibleDays: visibleDays,
dayBuilder: (context, day) {
return Text('${day.day}');
},
dowBuilder: (context, day) {
return Text('${day.weekday}');
},
dowHeight: 5,
),
),
);
expect(
find.byType(Column),
findsNWidgets(0),
);
},
);
testWidgets(
'Week numbers are visible',
(tester) async {
await tester.pumpWidget(
setupTestWidget(
CalendarPage(
visibleDays: visibleDays,
dayBuilder: (context, day) {
return Text('${day.day}');
},
dowBuilder: (context, day) {
return Text('${day.weekday}');
},
dowHeight: 5,
weekNumberVisible: true,
weekNumberBuilder: (BuildContext context, DateTime day) {
return Text(day.weekday.toString());
},
),
),
);
expect(
find.byType(Column),
findsNWidgets(1),
);
},
);
}