NumberProtection 增加浮點數字串轉 Int 的問題

JsonDecodeProtectionTests/DecimalTest.swift

@@ -36,7 +36,7 @@ final class DecimalTest: XCTestCase
     {
         self.jsonString = """
         {
-            "value": 0.001
+            "value": 122.999999999999999
         }
         """
 
@@ -53,6 +53,6 @@ final class DecimalTest: XCTestCase
         // Assert
         let result: String = self.formatter.string(from: valueNumber)!
 
-        XCTAssertTrue(result == "0.001")
+        XCTAssertTrue(result == "122.999999999")
     }
 }

JsonDecodeProtectionTests/NumberProtectionTest.swift

@@ -18,6 +18,10 @@ struct NumberObject: Decodable
     @NumberProtection
     private(set)
     var profit: Decimal?
+
+    @NumberProtection
+    private(set)
+    var amount: Int?
 }
 
 final class NumberProtectionTest: XCTestCase
@@ -76,4 +80,25 @@ final class NumberProtectionTest: XCTestCase
 
         XCTAssertEqual(actual, expect)
     }
+
+    func testNumberProtectionSuccessForFractionString() throws
+    {
+        // Arrange
+        self.jsonString = """
+        {
+            "amount": "122.999999999999999"
+        }
+        """
+        let jsonData: Data = self.jsonString.data(using: .utf8)!
+        let jsonDecoder = JSONDecoder()
+
+        // Act
+        let object = try jsonDecoder.decode(NumberObject.self, from: jsonData)
+
+        // Assert
+        let actual: Int? = object.amount
+        let expect: Int = 122
+
+        XCTAssertEqual(actual, expect)
+    }
 }

README.md

@@ -10,7 +10,7 @@
 
 * File > Swift Packages > Add Package Dependency
 * Add https://github.com/Darktt/JsonProtection
-* Select "Up to Next Major" with "1.0.6"
+* Select "Up to Next Major" with "1.0.7"
 
 ## 功能說明
 

SourceCode/JsonProtection/NumberProtection.swift

@@ -117,6 +117,17 @@ extension Decimal: NumberType
 
 extension Int: NumberType
 {
+    public
+    init?(_ source: String)
+    {
+        guard let decimal = Decimal(source) else {
+
+            return nil
+        }
+
+        self.init(decimal)
+    }
+
     public
     init?(_ source: Decimal)
     {
@@ -128,6 +139,17 @@ extension Int: NumberType
 
 extension Int32: NumberType
 {
+    public
+    init?(_ source: String)
+    {
+        guard let decimal = Decimal(source) else {
+
+            return nil
+        }
+
+        self.init(decimal)
+    }
+
     public
     init?(_ source: Decimal)
     {
@@ -139,6 +161,17 @@ extension Int32: NumberType
 
 extension UInt: NumberType
 {
+    public
+    init?(_ source: String)
+    {
+        guard let decimal = Decimal(source) else {
+
+            return nil
+        }
+
+        self.init(decimal)
+    }
+
     public
     init?(_ source: Decimal)
     {
@@ -150,6 +183,17 @@ extension UInt: NumberType
 
 extension UInt32: NumberType
 {
+    public
+    init?(_ source: String)
+    {
+        guard let decimal = Decimal(source) else {
+
+            return nil
+        }
+
+        self.init(decimal)
+    }
+
     public
     init?(_ source: Decimal)
     {