Quickstart starting point

ReqnrollQuickstart.App/Currency.cs

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+namespace ReqnrollQuickstart.App;
+
+// to be used later
+public record Currency(string Symbol, decimal Value)
+{
+    public static Currency operator+(Currency a, Currency b)
+    {
+        if (a.Symbol != b.Symbol)
+            throw new InvalidOperationException("Cannot add different currencies!");
+        return new Currency(a.Symbol, a.Value + b.Value);
+    }
+    public static Currency operator *(Currency a, int b)
+    {
+        return new Currency(a.Symbol, a.Value * b);
+    }
+}

ReqnrollQuickstart.App/PriceCalculator.cs

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+namespace ReqnrollQuickstart.App;
+
+public class PriceCalculator
+{
+    // the item prices are hard coded for now
+    private readonly Dictionary<string, decimal> _priceTable = new()
+    {
+        { "Electric guitar", 180.0m },
+        { "Guitar pick", 1.5m }
+    };
+
+    public decimal CalculatePrice(Dictionary<string, int> basket)
+    {
+        throw new NotImplementedException();
+    }
+}

ReqnrollQuickstart.App/ReqnrollQuickstart.App.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

ReqnrollQuickstart.Specs/Features/PriceCalculation.feature

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+Feature: Price calculation
+
+This feature is about calculating the basket price
+
+We work with fixed item prices for now:
+* Electric guitar: $180
+* Guitar pick: $1.5
+
+Rule: The price for a basket with items can be calculated based on the item prices
+
+Scenario: Client has a simple basket
+    Given the client started shopping
+    And the client added 1 pcs of "Electric guitar" to the basket
+    When the basket is prepared
+    Then the basket price should be $180.0

ReqnrollQuickstart.Specs/ImplicitUsings.cs

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+global using FluentAssertions;
+global using Microsoft.VisualStudio.TestTools.UnitTesting;
+global using Reqnroll;
+global using ReqnrollQuickstart.App;

ReqnrollQuickstart.Specs/ReqnrollQuickstart.Specs.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
+    <PackageReference Include="Reqnroll.MsTest" Version="1.0.0-pre20240125-60" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.1.1" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.1.1" />
+    <PackageReference Include="FluentAssertions" Version="6.12.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ReqnrollQuickstart.App\ReqnrollQuickstart.App.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <!-- hiding .gitkeep files in Visual Studio; they are only needed to ensure the existence of the empty folders in git -->
+    <None Update="**/.gitkeep" Visible="false" />
+  </ItemGroup>
+
+</Project>

ReqnrollQuickstart.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.8.34316.72
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ReqnrollQuickstart.Specs", "ReqnrollQuickstart.Specs\ReqnrollQuickstart.Specs.csproj", "{4408B957-D6D8-4334-8E40-A225DB7D5209}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ReqnrollQuickstart.App", "ReqnrollQuickstart.App\ReqnrollQuickstart.App.csproj", "{98891CEA-0EED-4BDE-A884-C64A9CA388D5}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{4408B957-D6D8-4334-8E40-A225DB7D5209}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{4408B957-D6D8-4334-8E40-A225DB7D5209}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{4408B957-D6D8-4334-8E40-A225DB7D5209}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{4408B957-D6D8-4334-8E40-A225DB7D5209}.Release|Any CPU.Build.0 = Release|Any CPU
+		{98891CEA-0EED-4BDE-A884-C64A9CA388D5}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{98891CEA-0EED-4BDE-A884-C64A9CA388D5}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{98891CEA-0EED-4BDE-A884-C64A9CA388D5}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{98891CEA-0EED-4BDE-A884-C64A9CA388D5}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {3A4151D1-FE77-4163-8587-0D803F3CA2F0}
+	EndGlobalSection
+EndGlobal