Homework 8 - [Calc]

Calc/Calc.Tests/Calc.Tests.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net9.0</TargetFramework>
+    <LangVersion>latest</LangVersion>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+
+    <IsTestProject>true</IsTestProject>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="coverlet.collector" Version="6.0.2" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
+    <PackageReference Include="NUnit" Version="4.2.2" />
+    <PackageReference Include="NUnit.Analyzers" Version="4.4.0" />
+    <PackageReference Include="NUnit3TestAdapter" Version="4.6.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="NUnit.Framework" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="../Calc/Calc.csproj"/>
+  </ItemGroup>
+
+</Project>

Calc/Calc.Tests/CalcErrorTests.cs

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+// <copyright file="CalcErrorTests.cs" company="Ilya Krivtsov">
+// Copyright (c) Ilya Krivtsov. All rights reserved.
+// </copyright>
+
+namespace Calc.Tests;
+
+public class CalcErrorTests
+{
+    private Calc calc;
+
+    [SetUp]
+    public void Setup()
+    {
+        calc = new();
+    }
+
+    [Test]
+    public void Test_0_Divide_0_Gives_Error()
+    {
+        calc.EnterDigit(0);
+        calc.OperatorPressed(ArithmeticOperation.Division);
+        calc.EnterDigit(0);
+        calc.EqualsPressed();
+        Assert.That(calc.DisplayResult, Is.EqualTo("Error"));
+    }
+
+    [Test]
+    public void Test_Error_State_Persists()
+    {
+        calc.EnterDigit(0);
+        calc.OperatorPressed(ArithmeticOperation.Division);
+        calc.EnterDigit(0);
+        calc.EqualsPressed();
+        Assert.That(calc.DisplayResult, Is.EqualTo("Error"));
+        calc.EnterDecimalPoint();
+        Assert.That(calc.DisplayResult, Is.EqualTo("Error"));
+        calc.EnterDigit(4);
+        Assert.That(calc.DisplayResult, Is.EqualTo("Error"));
+        calc.OperatorPressed(ArithmeticOperation.Addition);
+        Assert.That(calc.DisplayResult, Is.EqualTo("Error"));
+        calc.EqualsPressed();
+        Assert.That(calc.DisplayResult, Is.EqualTo("Error"));
+    }
+
+    [Test]
+    public void Test_Error_IsRemoved_AfterClear()
+    {
+        calc.EnterDigit(0);
+        calc.OperatorPressed(ArithmeticOperation.Division);
+        calc.EnterDigit(0);
+        calc.EqualsPressed();
+        Assert.That(calc.DisplayResult, Is.EqualTo("Error"));
+        calc.Clear();
+        Assert.That(calc.DisplayResult, Is.EqualTo("0"));
+    }
+}

Calc/Calc.Tests/CalcTests.cs

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+// <copyright file="CalcTests.cs" company="Ilya Krivtsov">
+// Copyright (c) Ilya Krivtsov. All rights reserved.
+// </copyright>
+
+namespace Calc.Tests;
+
+public class CalcTests
+{
+    private Calc calc;
+
+    [SetUp]
+    public void Setup()
+    {
+        calc = new();
+    }
+
+    [Test]
+    public void Test_2_Plus_3_Equals_5()
+    {
+        calc.EnterDigit(2);
+        Assert.That(calc.DisplayResult, Is.EqualTo("2"));
+
+        calc.OperatorPressed(ArithmeticOperation.Addition);
+        Assert.That(calc.DisplayResult, Is.EqualTo("2"));
+
+        calc.EnterDigit(3);
+        Assert.That(calc.DisplayResult, Is.EqualTo("3"));
+
+        calc.EqualsPressed();
+        Assert.That(calc.DisplayResult, Is.EqualTo("5"));
+    }
+
+    [Test]
+    public void Test_2_Plus_3_Minus_10_Equals_Minus_5()
+    {
+        calc.EnterDigit(2);
+        Assert.That(calc.DisplayResult, Is.EqualTo("2"));
+
+        calc.OperatorPressed(ArithmeticOperation.Addition);
+        Assert.That(calc.DisplayResult, Is.EqualTo("2"));
+
+        calc.EnterDigit(3);
+        Assert.That(calc.DisplayResult, Is.EqualTo("3"));
+
+        calc.OperatorPressed(ArithmeticOperation.Subtraction);
+        Assert.That(calc.DisplayResult, Is.EqualTo("5"));
+
+        calc.EnterDigit(1);
+        Assert.That(calc.DisplayResult, Is.EqualTo("1"));
+        calc.EnterDigit(0);
+        Assert.That(calc.DisplayResult, Is.EqualTo("10"));
+
+        calc.EqualsPressed();
+        Assert.That(calc.DisplayResult, Is.EqualTo("-5"));
+    }
+
+    [Test]
+    public void Test_0_Point_1_Plus_0_Point_2_Equals_0_Point_3()
+    {
+        calc.EnterDigit(0);
+        Assert.That(calc.DisplayResult, Is.EqualTo("0"));
+        calc.EnterDecimalPoint();
+        Assert.That(calc.DisplayResult, Is.EqualTo("0."));
+        calc.EnterDigit(1);
+        Assert.That(calc.DisplayResult, Is.EqualTo("0.1"));
+
+        calc.OperatorPressed(ArithmeticOperation.Addition);
+        Assert.That(calc.DisplayResult, Is.EqualTo("0.1"));
+
+        calc.EnterDigit(0);
+        Assert.That(calc.DisplayResult, Is.EqualTo("0"));
+        calc.EnterDecimalPoint();
+        Assert.That(calc.DisplayResult, Is.EqualTo("0."));
+        calc.EnterDigit(2);
+        Assert.That(calc.DisplayResult, Is.EqualTo("0.2"));
+
+        calc.EqualsPressed();
+        Assert.That(calc.DisplayResult, Is.EqualTo("0.3"));
+    }
+
+    [Test]
+    public void Test_Clear()
+    {
+        calc.EnterDigit(2);
+        Assert.That(calc.DisplayResult, Is.EqualTo("2"));
+
+        calc.OperatorPressed(ArithmeticOperation.Addition);
+        Assert.That(calc.DisplayResult, Is.EqualTo("2"));
+
+        calc.EnterDigit(3);
+        Assert.That(calc.DisplayResult, Is.EqualTo("3"));
+
+        calc.EqualsPressed();
+        Assert.That(calc.DisplayResult, Is.EqualTo("5"));
+
+        calc.Clear();
+        Assert.That(calc.DisplayResult, Is.EqualTo("0"));
+
+        calc.EnterDigit(3);
+        Assert.That(calc.DisplayResult, Is.EqualTo("3"));
+
+        calc.OperatorPressed(ArithmeticOperation.Addition);
+        Assert.That(calc.DisplayResult, Is.EqualTo("3"));
+
+        calc.EnterDigit(4);
+        Assert.That(calc.DisplayResult, Is.EqualTo("4"));
+
+        calc.EqualsPressed();
+        Assert.That(calc.DisplayResult, Is.EqualTo("7"));
+
+        calc.Clear();
+        Assert.That(calc.DisplayResult, Is.EqualTo("0"));
+    }
+
+    [Test]
+    public void Test_DoubleDecimalPoint_DoesNotAddNew_DecimalPoint()
+    {
+        calc.EnterDigit(2);
+        Assert.That(calc.DisplayResult, Is.EqualTo("2"));
+        calc.EnterDecimalPoint();
+        Assert.That(calc.DisplayResult, Is.EqualTo("2."));
+        calc.EnterDecimalPoint();
+        Assert.That(calc.DisplayResult, Is.EqualTo("2."));
+    }
+
+    [Test]
+    public void Test_EnteringDigitsAfter_Equals_SetsResultTo_ThatDigit()
+    {
+        calc.EnterDigit(2);
+        calc.EqualsPressed();
+        Assert.That(calc.DisplayResult, Is.EqualTo("2"));
+        calc.EnterDigit(5);
+        Assert.That(calc.DisplayResult, Is.EqualTo("5"));
+
+        calc.Clear();
+
+        calc.EnterDigit(1);
+        calc.OperatorPressed(ArithmeticOperation.Addition);
+        calc.EnterDigit(2);
+        calc.EqualsPressed();
+        Assert.That(calc.DisplayResult, Is.EqualTo("3"));
+        calc.EnterDigit(5);
+        Assert.That(calc.DisplayResult, Is.EqualTo("5"));
+    }
+}

Calc/Calc.Tests/GlobalSuppressions.cs

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+// <copyright file="GlobalSuppressions.cs" company="Ilya Krivtsov">
+// Copyright (c) Ilya Krivtsov. All rights reserved.
+// </copyright>
+
+// This file is used by Code Analysis to maintain SuppressMessage
+// attributes that are applied to this project.
+// Project-level suppressions either have no target or are given
+// a specific target and scoped to a namespace, type, member, etc.
+using System.Diagnostics.CodeAnalysis;
+
+[assembly: SuppressMessage("StyleCop.CSharp.DocumentationRules", "SA1600:Elements should be documented", Justification = "This is tests project")]

Calc/Calc.UI/App.axaml

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+<Application xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             x:Class="Calc.UI.App"
+             RequestedThemeVariant="Default">
+             <!-- "Default" ThemeVariant follows system theme variant. "Dark" or "Light" are other available options. -->
+
+    <Application.Styles>
+        <FluentTheme />
+    </Application.Styles>
+</Application>

Calc/Calc.UI/App.axaml.cs

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+// <copyright file="App.axaml.cs" company="Ilya Krivtsov">
+// Copyright (c) Ilya Krivtsov. All rights reserved.
+// </copyright>
+
+namespace Calc.UI;
+
+using Avalonia;
+using Avalonia.Controls.ApplicationLifetimes;
+using Avalonia.Markup.Xaml;
+
+public partial class App : Application
+{
+    public override void Initialize()
+    {
+        AvaloniaXamlLoader.Load(this);
+    }
+
+    public override void OnFrameworkInitializationCompleted()
+    {
+        if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
+        {
+            desktop.MainWindow = new MainWindow();
+        }
+
+        base.OnFrameworkInitializationCompleted();
+    }
+}

Calc/Calc.UI/Calc.UI.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net9.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <BuiltInComInteropSupport>true</BuiltInComInteropSupport>
+    <ApplicationManifest>app.manifest</ApplicationManifest>
+    <AvaloniaUseCompiledBindingsByDefault>true</AvaloniaUseCompiledBindingsByDefault>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Avalonia" Version="11.2.7" />
+    <PackageReference Include="Avalonia.Desktop" Version="11.2.7" />
+    <PackageReference Include="Avalonia.Themes.Fluent" Version="11.2.7" />
+    <PackageReference Include="Avalonia.Fonts.Inter" Version="11.2.7" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="../Calc/Calc.csproj" />
+  </ItemGroup>
+</Project>

Calc/Calc.UI/GlobalSuppressions.cs

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+// <copyright file="GlobalSuppressions.cs" company="Ilya Krivtsov">
+// Copyright (c) Ilya Krivtsov. All rights reserved.
+// </copyright>
+
+// This file is used by Code Analysis to maintain SuppressMessage
+// attributes that are applied to this project.
+// Project-level suppressions either have no target or are given
+// a specific target and scoped to a namespace, type, member, etc.
+using System.Diagnostics.CodeAnalysis;
+
+[assembly: SuppressMessage("StyleCop.CSharp.DocumentationRules", "SA1600:Elements should be documented", Justification = "Entry point", Scope = "type", Target = "~T:Calc.UI.Program")]
+
+[assembly: SuppressMessage("StyleCop.CSharp.DocumentationRules", "SA1601:Partial elements should be documented", Justification = "Application class", Scope = "type", Target = "~T:Calc.UI.App")]
+[assembly: SuppressMessage("StyleCop.CSharp.DocumentationRules", "SA1601:Partial elements should be documented", Justification = "Window class", Scope = "type", Target = "~T:Calc.UI.MainWindow")]
+[assembly: SuppressMessage("StyleCop.CSharp.DocumentationRules", "SA1600:Elements should be documented", Justification = "Application class", Scope = "type", Target = "~T:Calc.UI.App")]
+[assembly: SuppressMessage("StyleCop.CSharp.DocumentationRules", "SA1600:Elements should be documented", Justification = "Window class", Scope = "type", Target = "~T:Calc.UI.MainWindow")]

Calc/Calc.UI/MainWindow.axaml

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+<Window xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        mc:Ignorable="d" d:DesignWidth="512" d:DesignHeight="640"
+        x:Class="Calc.UI.MainWindow"
+        Width="512" Height="640" CanResize="false">
+
+    <Grid x:Name="buttonsGrid">
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition Width="*"></ColumnDefinition>
+            <ColumnDefinition Width="*"></ColumnDefinition>
+            <ColumnDefinition Width="*"></ColumnDefinition>
+            <ColumnDefinition Width="*"></ColumnDefinition>
+        </Grid.ColumnDefinitions>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="120"></RowDefinition>
+            <RowDefinition Height="*"></RowDefinition>
+            <RowDefinition Height="*"></RowDefinition>
+            <RowDefinition Height="*"></RowDefinition>
+            <RowDefinition Height="*"></RowDefinition>
+            <RowDefinition Height="*"></RowDefinition>
+        </Grid.RowDefinitions>
+
+        <Label x:Name="resultText" Grid.Row="0" Grid.Column="0" Grid.ColumnSpan="4" FontSize="80" Content="0"
+            HorizontalContentAlignment="Right" VerticalContentAlignment="Center"/>
+
+        <Button Grid.Row="5" Grid.Column="0" Grid.ColumnSpan="2" Content="0" FontSize="48" Margin="4" Click="OnZero"
+            HorizontalAlignment="Stretch" VerticalAlignment="Stretch" HorizontalContentAlignment="Center" VerticalContentAlignment="Center"/>
+        <Button Grid.Row="5" Grid.Column="2" Content="." FontSize="48" Margin="4" Click="OnDecimal"
+            HorizontalAlignment="Stretch" VerticalAlignment="Stretch" HorizontalContentAlignment="Center" VerticalContentAlignment="Center"/>
+
+        <Button Grid.Row="1" Grid.Column="0" Content="C" FontSize="48" Margin="4" Click="OnClear"
+            HorizontalAlignment="Stretch" VerticalAlignment="Stretch" HorizontalContentAlignment="Center" VerticalContentAlignment="Center"/>
+        <Button Grid.Row="1" Grid.Column="1" Content="÷" FontSize="48" Margin="4" Click="OnOperator" Tag="Division"
+            HorizontalAlignment="Stretch" VerticalAlignment="Stretch" HorizontalContentAlignment="Center" VerticalContentAlignment="Center"/>
+        <Button Grid.Row="1" Grid.Column="2" Content="×" FontSize="48" Margin="4" Click="OnOperator" Tag="Multiplication"
+            HorizontalAlignment="Stretch" VerticalAlignment="Stretch" HorizontalContentAlignment="Center" VerticalContentAlignment="Center"/>
+        <Button Grid.Row="1" Grid.Column="3" Content="-" FontSize="48" Margin="4" Click="OnOperator" Tag="Subtraction"
+            HorizontalAlignment="Stretch" VerticalAlignment="Stretch" HorizontalContentAlignment="Center" VerticalContentAlignment="Center"/>
+
+        <Button Grid.Row="2" Grid.Column="3" Grid.RowSpan="2" Content="+" FontSize="48" Margin="4" Click="OnOperator" Tag="Addition"
+            HorizontalAlignment="Stretch" VerticalAlignment="Stretch" HorizontalContentAlignment="Center" VerticalContentAlignment="Center"/>
+        <Button Grid.Row="4" Grid.Column="3" Grid.RowSpan="2" Content="=" FontSize="48" Margin="4" Click="OnEquals"
+            HorizontalAlignment="Stretch" VerticalAlignment="Stretch" HorizontalContentAlignment="Center" VerticalContentAlignment="Center"/>
+    </Grid>
+</Window>