CodeRush 是專為 Visual Studio 打造的高效開發(fā)插件，通過集成 AI 驅動功能（如自然語言生成代碼的 AiGen 和智能搜索邏輯的 AiFind）、語音交互及深度重構工具，直接在 IDE 內無縫完成代碼生成、修改與導航，消除窗口切換與手動操作，顯著提升編碼速度與專注度，讓開發(fā)者更聚焦核心問題解決。

CodeRush for Visual Studio v25.1已于日前全新發(fā)布，此版本新推 AI 雙引擎 AiGen（語音/文字生成與修改代碼）和 AiFind（智能代碼搜索），接下來我們將逐一為大家揭開這些功能的神秘面紗，歡迎下載新版體驗！

在上文中（>），我們?yōu)榇蠹医榻B了安裝說明、AiGen、調試器顯示屬性等，本文將繼續(xù)介紹添加操作符重載、添加測試用例等。

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添加操作符重載

對于該類中的插入符號，雙擊并按住Ctrl鍵，然后說：“我可以獲得一些數(shù)學運算符重載嗎？”

過了一會兒，您應該看到下面的方法插入到您的Fraction類中：

[DebuggerDisplay("{Numerator}/{Denominator}")]
public class Fraction
{
public static Fraction operator +(Fraction a, Fraction b)
{
int numerator = a.Numerator * b.Denominator + b.Numerator * a.Denominator;
int denominator = a.Denominator * b.Denominator;
return new Fraction(numerator, denominator);
}

public static Fraction operator -(Fraction a, Fraction b)
{
int numerator = a.Numerator * b.Denominator - b.Numerator * a.Denominator;
int denominator = a.Denominator * b.Denominator;
return new Fraction(numerator, denominator);
}

public static Fraction operator *(Fraction a, Fraction b)
{
int numerator = a.Numerator * b.Numerator;
int denominator = a.Denominator * b.Denominator;
return new Fraction(numerator, denominator);
}

public static Fraction operator /(Fraction a, Fraction b)
{
if (b.Numerator == 0)
{
throw new DivideByZeroException("Cannot divide by a fraction with zero numerator.");
}
int numerator = a.Numerator * b.Denominator;
int denominator = a.Denominator * b.Numerator;
return new Fraction(numerator, denominator);
}
public int Numerator { get; set; }
public int Denominator { get; set; }

public Fraction(int numerator, int denominator)
{
if (denominator == 0)
{
throw new ArgumentException("Denominator cannot be zero.", nameof(denominator));
}

Numerator = numerator;
Denominator = denominator;
}
}

新增測試用例

有了新的操作符重載，改進的Fraction類更容易使用。現(xiàn)在讓我們用一些測試用例來驗證它。雙擊并按住Ctrl鍵，然后說一些類似于“一些測試用例怎么樣？”

在幾秒鐘內，您應該將一個新的類和文件FractionTests.cs添加到項目中。

在機器上使用已經(jīng)引用的NUnit框架，AI構建了以下內容：

[TestFixture]
public class FractionTests
{
[Test]
public void TestAddition()
{
var fraction1 = new Fraction(1, 2);
var fraction2 = new Fraction(1, 3);
var result = fraction1 + fraction2;
Assert.AreEqual(5, result.Numerator);
Assert.AreEqual(6, result.Denominator);
}

[Test]
public void TestSubtraction()
{
var fraction1 = new Fraction(1, 2);
var fraction2 = new Fraction(1, 3);
var result = fraction1 - fraction2;
Assert.AreEqual(1, result.Numerator);
Assert.AreEqual(6, result.Denominator);
}

[Test]
public void TestMultiplication()
{
var fraction1 = new Fraction(1, 2);
var fraction2 = new Fraction(2, 3);
var result = fraction1 * fraction2;
Assert.AreEqual(2, result.Numerator);
Assert.AreEqual(6, result.Denominator);
}

[Test]
public void TestDivision()
{
var fraction1 = new Fraction(1, 2);
var fraction2 = new Fraction(3, 4);
var result = fraction1 / fraction2;
Assert.AreEqual(4, result.Numerator);
Assert.AreEqual(6, result.Denominator);
}

[Test]
public void TestZeroDenominatorThrowsException()
{
Assert.Throws<ArgumentException>(() => new Fraction(1, 0));
}

[Test]
public void TestZeroNumeratorInDivisionThrowsException()
{
var fraction1 = new Fraction(1, 2);
var fraction2 = new Fraction(0, 1);
Assert.Throws<DivideByZeroException>(() => fraction1 / fraction2);
}
}

請注意，在上面高亮顯示的行中，我們正在執(zhí)行新的操作符重載。

遺留代碼和新框架

要升級遺留代碼或使用新框架，請打開該文件并簡單地說明所需內容。例如，在我們剛剛創(chuàng)建的測試類中，可能希望將所有這些Assert.AreEqual調用轉換為更流暢的內容。

例如，雙擊并按住Ctrl鍵，然后說，“嘿，我們能把所有這些Assert.AreEqual調用轉換為Assert.That調用嗎？”

在幾秒鐘內，AiGen將類中的每個方法更改為如下所示：

[TestFixture]
public class FractionTests
{
[Test]
public void TestAddition()
{
var fraction1 = new Fraction(1, 2);
var fraction2 = new Fraction(1, 3);
var result = fraction1 + fraction2;
Assert.That(result.Numerator, Is.EqualTo(5));
Assert.That(result.Denominator, Is.EqualTo(6));
}

[Test]
public void TestSubtraction()
{
var fraction1 = new Fraction(1, 2);
var fraction2 = new Fraction(1, 3);
var result = fraction1 - fraction2;
Assert.That(result.Numerator, Is.EqualTo(1));
Assert.That(result.Denominator, Is.EqualTo(6));
}

[Test]
public void TestMultiplication()
{
var fraction1 = new Fraction(1, 2);
var fraction2 = new Fraction(2, 3);
var result = fraction1 * fraction2;
Assert.That(result.Numerator, Is.EqualTo(2));
Assert.That(result.Denominator, Is.EqualTo(6));
}

[Test]
public void TestDivision()
{
var fraction1 = new Fraction(1, 2);
var fraction2 = new Fraction(3, 4);
var result = fraction1 / fraction2;
Assert.That(result.Numerator, Is.EqualTo(4));
Assert.That(result.Denominator, Is.EqualTo(6));
}

[Test]
public void TestZeroDenominatorThrowsException()
{
Assert.Throws<ArgumentException>(() => new Fraction(1, 0));
}

[Test]
public void TestZeroNumeratorInDivisionThrowsException()
{
var fraction1 = new Fraction(1, 2);
var fraction2 = new Fraction(0, 1);
Assert.Throws<DivideByZeroException>(() => fraction1 / fraction2);
}
}

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