Added LCD digits kata

.github/workflows/dotnet.yml

@@ -9,6 +9,7 @@ on:
     paths:
       - '.github/workflows/dotnet.yml'
       - 'kata-solutions/shunting-yard-algo/shunting-yard-algo-dotnet/**'
+      - 'kata-solutions/lcd-digits-kata/lcd-digits-dotnet/**'
   pull_request:
     branches: [ "master" ]
 
@@ -29,3 +30,15 @@ jobs:
         dotnet restore
         dotnet build --no-restore
         dotnet test --no-build --verbosity normal
+
+    - uses: actions/checkout@v3
+    - name: Setup .NET
+      uses: actions/setup-dotnet@v3
+      with:
+        dotnet-version: 7.0.x
+    - name: LCD Digits kata
+      working-directory: kata-solutions/lcd-digits-kata/lcd-digits-dotnet
+      run: | 
+        dotnet restore
+        dotnet build --no-restore
+        dotnet test --no-build --verbosity normal

kata-solutions/lcd-digits-kata/lcd-digits-dotnet/LcdDigits.Tests/LcdDigits.Tests.csproj

@@ -0,0 +1,28 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.3.2" />
+    <PackageReference Include="xunit" Version="2.4.2" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.5">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
+    <PackageReference Include="coverlet.collector" Version="3.1.2">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
+  </ItemGroup>
+
+  <ItemGroup>
+	  <ProjectReference Include="..\LcdDigits\LcdDigits.csproj" />
+  </ItemGroup>
+
+</Project>

kata-solutions/lcd-digits-kata/lcd-digits-dotnet/LcdDigits.Tests/LcdDigitsTests.cs

@@ -0,0 +1,58 @@
+using Xunit;
+using System;
+
+namespace Kata.Tests;
+
+public class LcdDigitsTest
+{
+    [Fact]
+    public void Digit_the_number_0()
+    {
+        string expect = " _ " + "\r\n" +
+                        "| |" + "\r\n" +
+                        "|_|" + "\r\n";
+
+        Assert.Equivalent(expect, LcdDigits.GetDigits(0));
+    }
+
+    [Fact]
+    public void Digit_the_number_1()
+    {
+        string expect = "   " + "\r\n" +
+                        "  |" + "\r\n" +
+                        "  |" + "\r\n";
+
+        Assert.Equivalent(expect, LcdDigits.GetDigits(1));
+    }
+
+    [Fact]
+    public void Digit_the_number_2()
+    {
+        string expect = " _ " + "\r\n" +
+                        " _|" + "\r\n" +
+                        "|_ " + "\r\n";
+
+        Assert.Equivalent(expect, LcdDigits.GetDigits(2));
+    }
+
+    [Fact]
+    public void Digit_the_number_34()
+    {
+        string expect = " _    " + "\r\n" +
+                        " _||_|" + "\r\n" +
+                        " _|  |" + "\r\n";
+
+        Assert.Equivalent(expect, LcdDigits.GetDigits(34));
+    }
+
+
+    [Fact]
+    public void Digit_the_number_357()
+    {
+        string expect = " _  _  _ " + "\r\n" +
+                        " _||_   |" + "\r\n" +
+                        " _| _|  |" + "\r\n";
+
+        Assert.Equivalent(expect, LcdDigits.GetDigits(357));
+    }
+}

kata-solutions/lcd-digits-kata/lcd-digits-dotnet/LcdDigits.Tests/Usings.cs

@@ -0,0 +1 @@
+global using Xunit;

kata-solutions/lcd-digits-kata/lcd-digits-dotnet/LcdDigits/LcdDigits.cs

@@ -0,0 +1,41 @@
+
+using System.Data;
+using System.Globalization;
+using System.Runtime.CompilerServices;
+using System.Security.Cryptography;
+
+namespace Kata;
+
+public class LcdDigits
+{
+    private static string _digits = 
+    " _     _  _     _  _  _  _  _ " +  
+    "| |  | _| _||_||_ |_   ||_||_|" +  
+    "|_|  ||_  _|  | _||_|  ||_| _|";
+
+    private static string[] ConvertToSingleDigitStringArray(int number) {
+        return (from i in Enumerable.Range(0, 3) select _digits.Substring(i * 30 + number * 3, 3)).ToArray();
+    }
+
+    private static string[] AddDigits(string[] digit_1, string[] digit_2) {
+         return (from i in Enumerable.Range(0, 3) select digit_1[i] + digit_2[i]).ToArray();
+    }
+
+    public static string[] NumberAsString(int number)
+    {
+        int size = ("" + number).Length;
+        int power = 1;
+        for (int i = 1; i < size; i++)
+            power *= 10;
+
+        if (number < 10)
+            return ConvertToSingleDigitStringArray(number / power);
+        else 
+            return AddDigits(ConvertToSingleDigitStringArray(number / power), NumberAsString(number % power));
+    }
+
+    public static string GetDigits(int number) {
+        string[] numberAsString = NumberAsString(number);
+        return numberAsString[0] + "\r\n" + numberAsString[1] + "\r\n" + numberAsString[2] + "\r\n";
+    }
+}

kata-solutions/lcd-digits-kata/lcd-digits-dotnet/LcdDigits/LcdDigits.csproj

@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

kata-solutions/lcd-digits-kata/lcd-digits-dotnet/lcddigits.sln

@@ -0,0 +1,27 @@
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.0.31903.59
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "LcdDigits", "LcdDigits\LcdDigits.csproj", "{966F6F47-23DB-459B-959F-3115EB010C0A}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "LcdDigits.Tests", "LcdDigits.Tests\LcdDigits.Tests.csproj", "{BBE7EAF8-7CBB-4C49-81A2-D7D43663EFFB}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{966F6F47-23DB-459B-959F-3115EB010C0A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{966F6F47-23DB-459B-959F-3115EB010C0A}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{966F6F47-23DB-459B-959F-3115EB010C0A}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{966F6F47-23DB-459B-959F-3115EB010C0A}.Release|Any CPU.Build.0 = Release|Any CPU
+		{BBE7EAF8-7CBB-4C49-81A2-D7D43663EFFB}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{BBE7EAF8-7CBB-4C49-81A2-D7D43663EFFB}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{BBE7EAF8-7CBB-4C49-81A2-D7D43663EFFB}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{BBE7EAF8-7CBB-4C49-81A2-D7D43663EFFB}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+EndGlobal

kata-solutions/lcd-digits-kata/lcd-digits-dotnet/run_tests.sh

@@ -0,0 +1 @@
+dotnet watch test --project lcddigits.sln

tdd-katas/README.md

@@ -27,6 +27,7 @@ Difficulties range from low (**L**) → medium (**M**) → high (**H**).
 | [game-of-life](./game-of-life)                  | M       | **Generic TDD** / **Small steps**                     | ✔  | ✔    | ✗  | ✔   | ✗  | ✗  | ✗  |
 | [gilded-rose-kata](./gilded-rose-kata)          | M / H   | **Legacy code** / **Refactoring** / Approval tests    | ✔  | ✗    | ✔  | ✗   | ✗  | ✔  | ✗  |
 | [greed-kata](./greed-kata)                      | M       | Implement complex rules in **small steps**            | ✗  | ✗    | ✗  | ✔   | ✗  | ✗  | ✗  |
+| [locker-room-kata](./lcd-digits-kata)           | L       | Getting started with TDD / Recursion                  | ✗  | ✗    | ✗  | ✗   | ✗  | ✗  | ✔  |
 | [locker-room-kata](./locker-room-kata)          | M       | Stateless / Functional programming                    | ✗  | ✗    | ✗  | ✔   | ✔  | ✗  | ✗  |
 | [manhattan-distance](./manhattan-distance)      | L       | 1, 2, N / Encapsulation                               | ✔  | ✗    | ✗  | ✗   | ✗  | ✗  | ✗  |
 | [mars-rover](./mars-rover)                      | M       | **Generic TDD** / Design decisions                    | ✔  | ✗    | ✗  | ✗   | ✗  | ✗  | ✔  |

tdd-katas/lcd-digits-kata/README.md

@@ -0,0 +1,18 @@
+# About the LCD Digits Kata
+
+The goal of this kata is to convert any arbitrary (integer) number
+into a string representation like so:
+
+```
+ _     _  _     _  _  _  _  _ 
+| |  | _| _||_||_ |_   ||_||_|
+|_|  ||_  _|  | _||_|  ||_| _|
+```
+
+For example, the number 318 must be rendered as
+
+```
+ _     _ 
+ _|  ||_|
+ _|  ||_|
+```