From 42f1302c5dd969b2071589135814ad96d80ce783 Mon Sep 17 00:00:00 2001
From: Tomohisa Takaoka <ttakaoka@jtechs.com>
Date: Tue, 15 Oct 2024 18:56:29 -0700
Subject: [PATCH] ToResultBox

---
 .../ResultBoxes.Test/ToResultBoxSpecs.cs      | 41 +++++++++++++++++++
 src/ResultBoxes/ResultBoxes/ResultBox.cs      |  2 +
 .../ResultBoxes/ResultBoxes.csproj            |  6 +--
 .../ResultBoxes/ToResultBoxExtensions.cs      | 10 +++++
 4 files changed, 56 insertions(+), 3 deletions(-)
 create mode 100644 src/ResultBoxes/ResultBoxes.Test/ToResultBoxSpecs.cs
 create mode 100644 src/ResultBoxes/ResultBoxes/ToResultBoxExtensions.cs

diff --git a/src/ResultBoxes/ResultBoxes.Test/ToResultBoxSpecs.cs b/src/ResultBoxes/ResultBoxes.Test/ToResultBoxSpecs.cs
new file mode 100644
index 0000000..60f27c3
--- /dev/null
+++ b/src/ResultBoxes/ResultBoxes.Test/ToResultBoxSpecs.cs
@@ -0,0 +1,41 @@
+namespace ResultBoxes.Test;
+
+public class ToResultBoxSpecs
+{
+    [Fact]
+    public void ToResultBoxFromPrimitive()
+    {
+        var result = 1.ToResultBox();
+        Assert.True(result.IsSuccess);
+        Assert.Equal(1, result.GetValue());
+    }
+    [Fact]
+    public void ToResultBoxFromString()
+    {
+        var result = "Hello".ToResultBox();
+        Assert.True(result.IsSuccess);
+        Assert.Equal("Hello", result.GetValue());
+    }
+    [Fact]
+    public async Task ToResultBoxFromPrimitiveTask()
+    {
+        var result = Task.FromResult(1).ToResultBox();
+        Assert.True((await result).IsSuccess);
+        Assert.Equal(1, (await result).GetValue());
+    }
+    [Fact]
+    public async Task ToResultBoxFromStringTask()
+    {
+        var result = Task.FromResult("Hello").ToResultBox();
+        Assert.True((await result).IsSuccess);
+        Assert.Equal("Hello", (await result).GetValue());
+    }
+    [Fact]
+    public void ToResultBoxFromException()
+    {
+        var exception = new ApplicationException("Can not execute");
+        var result = exception.ToResultBoxFromException<int>();
+        Assert.False(result.IsSuccess);
+        Assert.Equal(exception, result.GetException());
+    }
+}
diff --git a/src/ResultBoxes/ResultBoxes/ResultBox.cs b/src/ResultBoxes/ResultBoxes/ResultBox.cs
index ce73786..df9a748 100644
--- a/src/ResultBoxes/ResultBoxes/ResultBox.cs
+++ b/src/ResultBoxes/ResultBoxes/ResultBox.cs
@@ -136,6 +136,8 @@ public static ResultBox<TValue> Error<TValue>(Exception exception) where TValue
 
     public static ResultBox<TValue> FromException<TValue>(Exception exception) where TValue : notnull =>
         new(default, exception);
+    public static async Task<ResultBox<TValue>> FromException<TValue>(Task<Exception> exception) where TValue : notnull =>
+        new(default, await exception);
 
     public static Task<ResultBox<TValueResult>> WrapTry<TValueResult>(Func<Task<TValueResult>> func,
         Func<Exception, Exception>? exceptionMapper = null)
diff --git a/src/ResultBoxes/ResultBoxes/ResultBoxes.csproj b/src/ResultBoxes/ResultBoxes/ResultBoxes.csproj
index 378c3b4..d6db0e0 100644
--- a/src/ResultBoxes/ResultBoxes/ResultBoxes.csproj
+++ b/src/ResultBoxes/ResultBoxes/ResultBoxes.csproj
@@ -7,13 +7,13 @@
         <RootNamespace>ResultBoxes</RootNamespace>
         <LangVersion>preview</LangVersion>
         <PackageId>ResultBoxes</PackageId>
-        <Version>0.3.25</Version>
+        <Version>0.3.26</Version>
         <Authors>J-Tech Group</Authors>
         <Company>J-Tech-Japan</Company>
         <PackageDescription>ResultBoxes - C# Results Library that focus on Railway Programming.</PackageDescription>
         <RepositoryUrl>https://github.com/J-Tech-Japan/ResultBoxes</RepositoryUrl>
-        <PackageVersion>0.3.25</PackageVersion>
-        <Description>Scan(async ()=>{}) execute order fixed</Description>
+        <PackageVersion>0.3.26</PackageVersion>
+        <Description>Add ToResultBox</Description>
         <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
         <PackageReadmeFile>README.md</PackageReadmeFile>
         <IncludeSymbols>true</IncludeSymbols>
diff --git a/src/ResultBoxes/ResultBoxes/ToResultBoxExtensions.cs b/src/ResultBoxes/ResultBoxes/ToResultBoxExtensions.cs
new file mode 100644
index 0000000..12b4e03
--- /dev/null
+++ b/src/ResultBoxes/ResultBoxes/ToResultBoxExtensions.cs
@@ -0,0 +1,10 @@
+namespace ResultBoxes;
+
+public static class ToResultBoxExtensions
+{
+    public static Task<ResultBox<T>> ToResultBox<T>(this Task<T> source) where T : notnull =>
+        ResultBox.FromValue(source);
+    public static ResultBox<T> ToResultBox<T>(this T source) where T : notnull => ResultBox.FromValue(source);
+    
+    public static ResultBox<T> ToResultBoxFromException<T>(this Exception source) where T : notnull => ResultBox.FromException<T>(source);
+}
\ No newline at end of file