InitSetters: .NET 10, xUnit asserts, Tokyo coordinates fixed, new init examples

csharp-basic-topics/InitSetters/InitSetters.Tests/CityTests.cs

@@ -1,12 +1,10 @@
-using FluentAssertions;
-
 namespace InitSetters.Tests
 {
     public class CityTests
     {
         private readonly string _name = "Tokyo";
-        private readonly double _lat = 139.839478;
-        private readonly double _lon = 35.652832;
+        private readonly double _lat = 35.652832;
+        private readonly double _lon = 139.839478;
 
         [Fact]
         public void WhenConstructorIsInvoked_ThenValidObjectIsReturned()
@@ -15,9 +13,9 @@ public void WhenConstructorIsInvoked_ThenValidObjectIsReturned()
             var city = new City(_name, _lat, _lon);
 
             // Assert
-            city.Name.Should().Be(_name);
-            city.Latitude.Should().Be(_lat);
-            city.Longitude.Should().Be(_lon);
+            Assert.Equal(_name, city.Name);
+            Assert.Equal(_lat, city.Latitude);
+            Assert.Equal(_lon, city.Longitude);
         }
 
         [Fact]
@@ -31,7 +29,58 @@ public void WhenChangeNameIsInvoked_ThenNameIsChanged()
             city.ChangeName(newName);
 
             // Assert
-            city.Name.Should().Be(newName);
+            Assert.Equal(newName, city.Name);
+        }
+
+        [Fact]
+        public void WhenSetPropertyIsAssignedAfterCreation_ThenValueChanges()
+        {
+            // Arrange
+            var landmark = new Landmark { Name = "Senso-ji", City = "Tokyo" };
+
+            // Act
+            landmark.Name = "Senso-ji Temple";
+
+            // Assert
+            Assert.Equal("Senso-ji Temple", landmark.Name);
+            Assert.Equal("Tokyo", landmark.City);
+        }
+
+        [Fact]
+        public void WhenRequiredPropertyIsSet_ThenObjectIsCreated()
+        {
+            // Act
+            var japan = new Country { Name = "Japan", Capital = "Tokyo" };
+
+            // Assert
+            Assert.Equal("Japan", japan.Name);
+            Assert.Equal("Tokyo", japan.Capital);
+        }
+
+        [Fact]
+        public void WhenWithExpressionIsUsed_ThenOriginalIsUnchanged()
+        {
+            // Arrange
+            var tokyo = new Coordinates(35.652832, 139.839478);
+
+            // Act
+            var tower = tokyo with { Latitude = 35.658581, Longitude = 139.745438 };
+
+            // Assert
+            Assert.Equal(35.652832, tokyo.Latitude);
+            Assert.Equal(35.658581, tower.Latitude);
+            Assert.NotSame(tokyo, tower);
+        }
+
+        [Fact]
+        public void WhenObjectInitializerFollowsPrimaryConstructor_ThenInitializerWins()
+        {
+            // Act
+            var haneda = new Airport("HND", "Haneda") { Name = "Tokyo International" };
+
+            // Assert
+            Assert.Equal("HND", haneda.Code);
+            Assert.Equal("Tokyo International", haneda.Name);
         }
     }
-}
+}

csharp-basic-topics/InitSetters/InitSetters.Tests/InitSetters.Tests.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net7.0</TargetFramework>
+    <TargetFramework>net10.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
 
@@ -10,14 +10,13 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="FluentAssertions" Version="6.11.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.5.0" />
-    <PackageReference Include="xunit" Version="2.4.2" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.5">
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.11.0" />
+    <PackageReference Include="xunit" Version="2.9.3" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="4.0.1">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>
-    <PackageReference Include="coverlet.collector" Version="3.2.0">
+    <PackageReference Include="coverlet.collector" Version="10.1.0">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>

csharp-basic-topics/InitSetters/InitSetters/Airport.cs

@@ -0,0 +1,8 @@
+namespace InitSetters
+{
+    public class Airport(string code, string name)
+    {
+        public string Code { get; init; } = code;
+        public string Name { get; init; } = name;
+    }
+}

csharp-basic-topics/InitSetters/InitSetters/Coordinates.cs

@@ -0,0 +1,4 @@
+namespace InitSetters
+{
+    public record Coordinates(double Latitude, double Longitude);
+}

csharp-basic-topics/InitSetters/InitSetters/Country.cs

@@ -0,0 +1,8 @@
+namespace InitSetters
+{
+    public class Country
+    {
+        public required string Name { get; init; }
+        public string? Capital { get; init; }
+    }
+}

csharp-basic-topics/InitSetters/InitSetters/InitSetters.csproj

@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net7.0</TargetFramework>
+    <TargetFramework>net10.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>

csharp-basic-topics/InitSetters/InitSetters/Landmark.cs

@@ -0,0 +1,8 @@
+namespace InitSetters
+{
+    public class Landmark
+    {
+        public string Name { get; set; } = "";
+        public string City { get; init; } = "";
+    }
+}

csharp-basic-topics/InitSetters/InitSetters/Program.cs

@@ -4,13 +4,32 @@ internal class Program
     {
         static void Main(string[] args)
         {
-            var city = new City("Tokyo", 139.839478, 35.652832);
+            var city = new City("Tokyo", 35.652832, 139.839478);
 
             Console.WriteLine($"{city.Name}: {city.Latitude}, {city.Longitude}");
 
             city.ChangeName("Edo");
 
             Console.WriteLine($"{city.Name}: {city.Latitude}, {city.Longitude}");
+
+            var landmark = new Landmark { Name = "Senso-ji", City = "Tokyo" };
+            landmark.Name = "Senso-ji Temple";
+
+            Console.WriteLine($"{landmark.Name} is in {landmark.City}");
+
+            var japan = new Country { Name = "Japan", Capital = "Tokyo" };
+
+            Console.WriteLine($"{japan.Name}: {japan.Capital}");
+
+            var tokyo = new Coordinates(35.652832, 139.839478);
+            var tower = tokyo with { Latitude = 35.658581, Longitude = 139.745438 };
+
+            Console.WriteLine(tokyo);
+            Console.WriteLine(tower);
+
+            var haneda = new Airport("HND", "Haneda") { Name = "Tokyo International" };
+
+            Console.WriteLine($"{haneda.Code}: {haneda.Name}");
         }
     }
-}
+}