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1189041d8e
New in-theme classes: Buyers computes a shopping-list total, PriceList stands for the pricing service (random surge, flaky test). One loop, one lambda-able expression — the third example teaches the move with nothing else in the way. Pristine repo + reference solution (extract lambda, slide, extract method with Func<IceCream,int> parameter, pure-lambda test) + storyboard in the established style. Mirrors the kata's C# setup (net7.0, MSTest); needs a build check on a machine with the SDK.
21 lines
659 B
C#
21 lines
659 B
C#
using IceCreamBuyers;
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using Microsoft.VisualStudio.TestTools.UnitTesting;
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using System.Collections.Generic;
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namespace IceCreamBuyers.Tests
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{
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[TestClass]
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public class BuyersTests
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{
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[TestMethod]
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public void ShoppingListTotalUsesThePricingWePassIn()
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{
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// pure pricing function: everything costs 2.
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// Anke: 2 flavours x 2 scoops x 2 = 8 — deterministic, glanceable.
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var buyers = new Buyers();
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var anke = new Buyer("Anke", new List<IceCream> { IceCream.Strawberry, IceCream.Vanilla });
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Assert.AreEqual(8, buyers.ShoppingListTotal(anke, _ => 2));
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}
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}
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}
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