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Add initial unit tests; enhance Chart and Milestone widgets

main
henryhdr 2024-06-03 12:46:40 +02:00
parent 473db9335e
commit 880696ad18
10 changed files with 260 additions and 84 deletions
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1
lib/main.dart
View File

@ -2,7 +2,6 @@ import 'package:flutter/material.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter_application_1/calculator.dart';
import 'package:flutter_application_1/enums.dart';
import 'package:flutter_application_1/translations.dart';
import 'package:flutter_application_1/utils.dart';
import 'package:flutter_application_1/widgets/input_widget.dart';
import 'package:flutter_application_1/widgets/interval_widget.dart';

10
lib/translations.dart
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@ -1,10 +0,0 @@
import 'package:flutter_application_1/enums.dart';
String translateInterval(PayoutInterval interval) {
switch (interval) {
case PayoutInterval.yearly:
return 'jährlich';
case PayoutInterval.monthly:
return 'monatlich';
}
}

10
lib/utils.dart
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@ -1,4 +1,5 @@
import 'package:flutter/material.dart';
import 'package:flutter_application_1/enums.dart';
// Rundet den Wert im Textfeld-Controller auf die nächste ganze Zahl
void roundToInteger(TextEditingController controller) {
@ -20,3 +21,12 @@ void restoreDefaultValuesIfEmpty(TextEditingController controller) {
controller.text = '0';
}
}
String translateInterval(PayoutInterval interval) {
switch (interval) {
case PayoutInterval.yearly:
return 'jährlich';
case PayoutInterval.monthly:
return 'monatlich';
}
}

153
lib/widgets/chart_widget.dart
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@ -1,4 +1,5 @@
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:syncfusion_flutter_charts/charts.dart';
// Widget zur Erstellung eines gestapelten Säulendiagramms
@ -79,3 +80,155 @@ class SalesData {
SalesData(this.year, this.value);
}
// Widget, welches das Diagramm auf eine neue Seite auslagert
@override
Widget buildChartPage(BuildContext context, List<double> investedMoneyList, List<double> compoundInterestList) {
return Scaffold(
body: CustomScrollView(
slivers: <Widget>[
SliverToBoxAdapter(
child: Container(
padding: EdgeInsets.only(left: 10, right: 10, top: MediaQuery.of(context).padding.top + 10),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
IconButton(
icon: const Icon(CupertinoIcons.chevron_left, size: 15), // Zurück-Pfeil
onPressed: () {
Navigator.pop(context);
},
),
const Text(
'Grafik',
style: TextStyle(fontWeight: FontWeight.bold),
),
const SizedBox(width: 40), // Platzhalter für zentrierte Ausrichtung
],
),
),
),
SliverToBoxAdapter( // Diagramm Anzeigen
child: Padding(
padding: const EdgeInsets.all(10.0),
child: StackedColumnChart(
lowerValues: investedMoneyList,
upperValues: compoundInterestList,
),
),
),
SliverToBoxAdapter( // Tabelle mit allen Werten anzeigen
child: Padding(
padding: const EdgeInsets.all(10.0),
child: Container(
decoration: BoxDecoration(
color: CupertinoColors.black,
borderRadius: BorderRadius.circular(5),
),
clipBehavior: Clip.antiAlias,
child: Table(
columnWidths: const {
0: FixedColumnWidth(60), // Spaltenbreite für die erste Spalte verringern
1: FlexColumnWidth(),
2: FlexColumnWidth(),
3: FlexColumnWidth(),
},
border: TableBorder.symmetric(
inside: const BorderSide(color: CupertinoColors.white, width: 1),
),
children: [
const TableRow(
decoration: BoxDecoration(color: CupertinoColors.darkBackgroundGray),
children: [
Padding(
padding: EdgeInsets.all(8.0),
child: Text(
'Jahr',
style: TextStyle(
color: CupertinoColors.white,
fontWeight: FontWeight.bold,
),
textAlign: TextAlign.center,
),
),
Padding(
padding: EdgeInsets.all(8.0),
child: Text(
'Einzahlungen',
style: TextStyle(
color: CupertinoColors.white,
fontWeight: FontWeight.bold,
),
textAlign: TextAlign.center,
),
),
Padding(
padding: EdgeInsets.all(8.0),
child: Text(
'Zinsen',
style: TextStyle(
color: CupertinoColors.white,
fontWeight: FontWeight.bold,
),
textAlign: TextAlign.center,
),
),
Padding(
padding: EdgeInsets.all(8.0),
child: Text(
'Endkapital',
style: TextStyle(
color: CupertinoColors.white,
fontWeight: FontWeight.bold,
),
textAlign: TextAlign.center,
),
),
],
),
for (int i = 0; i < investedMoneyList.length; i++)
TableRow(
children: [
Padding(
padding: const EdgeInsets.all(8.0),
child: Text(
'${i + 1}',
style: const TextStyle(color: CupertinoColors.white),
textAlign: TextAlign.center,
),
),
Padding(
padding: const EdgeInsets.all(8.0),
child: Text(
'€${investedMoneyList[i]}',
style: const TextStyle(color: CupertinoColors.white),
textAlign: TextAlign.center,
),
),
Padding(
padding: const EdgeInsets.all(8.0),
child: Text(
'€${compoundInterestList[i]}',
style: const TextStyle(color: CupertinoColors.white),
textAlign: TextAlign.center,
),
),
Padding(
padding: const EdgeInsets.all(8.0),
child: Text(
'€${compoundInterestList[i] + investedMoneyList[i]}',
style: const TextStyle(color: CupertinoColors.white),
textAlign: TextAlign.center,
),
),
],
),
],
),
),
),
),
],
),
);
}

2
lib/widgets/interval_widget.dart
View File

@ -1,7 +1,7 @@
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter_application_1/enums.dart';
import 'package:flutter_application_1/translations.dart';
import 'package:flutter_application_1/utils.dart';
class IntervalWidget extends StatefulWidget {
final String selectedInterval;

41
lib/widgets/milestone_timeline_widget.dart
View File

@ -1,6 +1,7 @@
// Erstellt eine Zeitleiste für Meilensteine
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
// Erstellt eine Zeitleiste für Meilensteine
Widget buildMilestoneTimeline(List<Map<String, dynamic>> milestones, double totalInterest) {
return SizedBox(
child: Center(
@ -50,3 +51,41 @@ Widget buildMilestoneTimeline(List<Map<String, dynamic>> milestones, double tota
),
);
}
// Widget, welches den Meilenstein-Zeitstrahl auf eine neue Seite auslagert
@override
Widget buildMilestonePage(BuildContext context, String compoundInterest, String investedMoney, List<Map<String, dynamic>> milestoneList) {
return Scaffold(
body: CustomScrollView(
slivers: <Widget>[
SliverToBoxAdapter(
child: Container(
padding: EdgeInsets.only(left: 10, right: 10, top: MediaQuery.of(context).padding.top + 10),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
IconButton(
icon: const Icon(CupertinoIcons.chevron_left, size: 15), // Zurück-Pfeil
onPressed: () {
Navigator.pop(context);
},
),
const Text(
'Grafik',
style: TextStyle(fontWeight: FontWeight.bold),
),
const SizedBox(width: 40), // Platzhalter für zentrierte Ausrichtung
],
),
),
),
SliverToBoxAdapter( // Meilenstein-Zeitstrahl anzeigen
child: Padding(
padding: const EdgeInsets.all(10.0),
child: buildMilestoneTimeline(milestoneList, double.parse(compoundInterest) - double.parse(investedMoney))
),
),
],
),
);
}

32
lib/widgets/result_widget.dart
View File

@ -1,8 +1,7 @@
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter_application_1/enums.dart';
import 'package:flutter_application_1/translations.dart';
import 'package:flutter_application_1/widgets/second_page_widget.dart';
import 'package:flutter_application_1/utils.dart';
import 'package:flutter_application_1/widgets/custom_image_button_widget.dart';
import 'package:flutter_application_1/widgets/chart_widget.dart';
import 'package:flutter_application_1/widgets/milestone_timeline_widget.dart';
@ -20,18 +19,20 @@ Widget buildResultWidget(BuildContext context, String compoundInterest, String i
return Column(
children: <Widget>[
_buildResultRow('Endkapital:', '$compoundInterest€'),
_buildResultRow('Einzahlungen:', '$investedMoney€'),
_buildResultRow('Erhaltene Zinsen:', '${double.parse(compoundInterest) + double.parse(investedMoney)}€'),
const SizedBox(height: 10),
Text(
'Wenn du über einen Zeitraum von $time Jahren ${translateInterval(payoutInterval)} $monthlySavingsRate€ mit einem Zinssatz von $interestRate% investierst, erreichst du am Ende ein Endkapital von $compoundInterest€. Dieses setzt sich aus Einzahlungen von $investedMoney€ und Zinsen bzw. Kapitalerträgen in Höhe von ${double.parse(compoundInterest) - double.parse(investedMoney)}€ zusammen.'
),
const SizedBox(height: 20),
CustomImageButton(
onPressed: () {
Navigator.push(
context,
MaterialPageRoute(
builder: (context) => SecondPage(
title: 'Grafik',
widgetToShow: StackedColumnChart(
lowerValues: investedMoneyList,
upperValues: compoundInterestList,
)
),
builder: (context) => buildChartPage(context, investedMoneyList, compoundInterestList),
),
);
},
@ -47,10 +48,7 @@ Widget buildResultWidget(BuildContext context, String compoundInterest, String i
Navigator.push(
context,
MaterialPageRoute(
builder: (context) => SecondPage(
title: 'Meilensteine',
widgetToShow: buildMilestoneTimeline(milestoneList, double.parse(compoundInterest) - double.parse(investedMoney))
),
builder: (context) => buildMilestonePage(context, compoundInterest, investedMoney, milestoneList),
),
);
},
@ -60,14 +58,6 @@ Widget buildResultWidget(BuildContext context, String compoundInterest, String i
style: TextStyle(color: CupertinoColors.white, fontSize: 20),
),
),
const SizedBox(height: 20),
_buildResultRow('Endkapital:', '$compoundInterest€'),
_buildResultRow('Einzahlungen:', '$investedMoney€'),
_buildResultRow('Erhaltene Zinsen:', '${double.parse(compoundInterest) - double.parse(investedMoney)}€'),
const SizedBox(height: 10),
Text(
'Wenn du über einen Zeitraum von $time Jahren ${translateInterval(payoutInterval)} $monthlySavingsRate€ mit einem Zinssatz von $interestRate% investierst, erreichst du am Ende ein Endkapital von $compoundInterest€. Dieses setzt sich aus Einzahlungen von $investedMoney€ und Zinsen bzw. Kapitalerträgen in Höhe von ${double.parse(compoundInterest) - double.parse(investedMoney)}€ zusammen.'
),
],
);

50
lib/widgets/second_page_widget.dart
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@ -1,50 +0,0 @@
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
class SecondPage extends StatelessWidget {
final String title;
final Widget widgetToShow;
const SecondPage({
super.key,
required this.title,
required this.widgetToShow
});
@override
Widget build(BuildContext context) {
return Scaffold(
body: CustomScrollView(
slivers: <Widget>[
SliverToBoxAdapter(
child: Container(
padding: EdgeInsets.only(left: 10, right: 10, top: MediaQuery.of(context).padding.top + 10),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
IconButton(
icon: const Icon(CupertinoIcons.chevron_left, size: 15), // Zurück-Pfeil
onPressed: () {
Navigator.pop(context);
},
),
Text(
title,
style: const TextStyle(fontWeight: FontWeight.bold),
),
const SizedBox(width: 40), // Platzhalter für zentrierte Ausrichtung
],
),
),
),
SliverToBoxAdapter(
child: Padding(
padding: const EdgeInsets.all(10.0),
child: widgetToShow, // Anzeigen des mitgegebenen Widgets
),
),
],
),
);
}
}

44
test/unit_test.dart 100644
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@ -0,0 +1,44 @@
import 'package:flutter_test/flutter_test.dart';
import 'package:flutter_application_1/enums.dart';
import 'package:flutter_application_1/calculator.dart';
void main() {
group('Calculation Tests', () {
test('Test calculateInvestedMoney function', () {
// Testen mit verschiedenen Eingabewerten
expect(calculateInvestedMoney(1000, 100, 5, []), equals(7000.0));
expect(calculateInvestedMoney(2000, 50, 10, []), equals(8000.0));
});
test('Test calculateCompoundInterest function', () {
// Testen mit jährlicher Auszahlung
List<double> investedMoneyListYearly = [];
List<double> compoundInterestListYearly = [];
calculateInvestedMoney(1000, 100, 10, investedMoneyListYearly);
expect(calculateCompoundInterest(1000, 100, 5, 10, PayoutInterval.yearly, investedMoneyListYearly, compoundInterestListYearly), equals(16722.0));
// Testen mit monatlicher Auszahlung
List<double> investedMoneyListMonthly = [];
List<double> compoundInterestListMonthly = [];
calculateInvestedMoney(2000, 50, 10, investedMoneyListMonthly);
expect(calculateCompoundInterest(2000, 50, 5, 10, PayoutInterval.monthly, investedMoneyListMonthly, compoundInterestListMonthly), equals(11058.0));
});
});
group('Edge Case Tests', () {
test('Test calculateInvestedMoney function with extremely high input values', () {
// Testen mit extrem hohen Eingabewerten
expect(calculateInvestedMoney(1e15, 1e12, 100, []), equals(2.2e15));
});
test('Test calculateInvestedMoney function with extremely low input values', () {
// Testen mit extrem niedrigen Eingabewerten
expect(calculateInvestedMoney(0, 0, 0, []), equals(0.0));
expect(calculateInvestedMoney(0.1, 0.01, 0.001, []), equals(0.0));
});
test('Test calculateCompoundInterest function with extremely high interest rate', () {
// Testen mit extrem hohen Zinssatz
List<double> investedMoneyListHighInterest = [];
List<double> compoundInterestListHighInterest = [];
calculateInvestedMoney(1000, 100, 10, investedMoneyListHighInterest);
expect(calculateCompoundInterest(1000, 100, 1000, 10, PayoutInterval.yearly, investedMoneyListHighInterest, compoundInterestListHighInterest), equals(29049915553000.0));
});
});
}

1
test/widget_test.dart 100644
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@ -0,0 +1 @@
import 'package:flutter_test/flutter_test.dart';