CodeRush AI 助手进驻 Visual Studio：AiGen/AiFind 亮相（二）

CodeRush 是专为 Visual Studio 打造的高效开发插件，通过集成 AI 驱动功能（如自然语言生成代码的 AiGen 和智能搜索逻辑的 AiFind）、语音交互及深度重构工具，直接在 IDE 内无缝完成代码生成、修改与导航，消除窗口切换与手动操作，显著提升编码速度与专注度，让开发者更聚焦核心问题解决。

CodeRush for Visual Studio v25.1已于日前全新发布，此版本新推 AI 双引擎 AiGen（语音/文字生成与修改代码）和 AiFind（智能代码搜索），接下来我们将逐一为大家揭开这些功能的神秘面纱，欢迎下载新版体验！

在上文中（点击这里回顾>>），我们为大家介绍了安装说明、AiGen、调试器显示属性等，本文将继续介绍添加操作符重载、添加测试用例等。

获取CodeRush v25.1正式版下载

添加操作符重载

对于该类中的插入符号，双击并按住Ctrl键，然后说：“我可以获得一些数学运算符重载吗？”

过了一会儿，您应该看到下面的方法插入到您的Fraction类中：

[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;
}
}

新增测试用例

有了新的操作符重载，改进的Fraction类更容易使用。现在让我们用一些测试用例来验证它。双击并按住Ctrl键，然后说一些类似于“一些测试用例怎么样？”

在几秒钟内，您应该将一个新的类和文件FractionTests.cs添加到项目中。

在机器上使用已经引用的NUnit框架，AI构建了以下内容：

[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);
}
}

请注意，在上面高亮显示的行中，我们正在执行新的操作符重载。

遗留代码和新框架

要升级遗留代码或使用新框架，请打开该文件并简单地说明所需内容。例如，在我们刚刚创建的测试类中，可能希望将所有这些Assert.AreEqual调用转换为更流畅的内容。

例如，双击并按住Ctrl键，然后说，“嘿，我们能把所有这些Assert.AreEqual调用转换为Assert.That调用吗？”

在几秒钟内，AiGen将类中的每个方法更改为如下所示：

[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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