// 場景：讓 AI 生成 Unit Test
// 原始程式碼
public class PriceCalculator
{
    public decimal CalculateDiscount(decimal price, string memberLevel)
    {
        return memberLevel switch
        {
            "gold" => price * 0.8m,
            "silver" => price * 0.9m,
            "bronze" => price * 0.95m,
            _ => price
        };
    }
}
 
// AI 生成的測試（需要人工審查和補充）
[TestClass]
public class PriceCalculatorTests
{
    private readonly PriceCalculator _calculator = new();
 
    [TestMethod]
    public void GoldMember_Gets20PercentDiscount()
    {
        var result = _calculator.CalculateDiscount(100m, "gold");
        Assert.AreEqual(80m, result);
    }
 
    [TestMethod]
    public void UnknownLevel_NoDiscount()
    {
        var result = _calculator.CalculateDiscount(100m, "unknown");
        Assert.AreEqual(100m, result);
    }
 
    [TestMethod]
    public void ZeroPrice_ReturnsZero()
    {
        var result = _calculator.CalculateDiscount(0m, "gold");
        Assert.AreEqual(0m, result);
    }
 
    // 人工補充：AI 可能遺漏的邊界案例
    [TestMethod]
    public void NegativePrice_ShouldThrow()
    {
        // AI 沒想到的：負數價格應該拋出例外
        Assert.ThrowsException<ArgumentException>(
            () => _calculator.CalculateDiscount(-100m, "gold"));
    }
}

// 場景：AI 輔助 Code Review（自動化 PR 審查）
// .github/workflows/ai-review.yml 概念
 
interface ReviewComment {
  file: string;
  line: number;
  severity: "critical" | "warning" | "suggestion";
  message: string;
  suggestedFix?: string;
}
 
async function aiCodeReview(diff: string): Promise<ReviewComment[]> {
  const response = await client.messages.create({
    model: "claude-sonnet-4-20250514",
    max_tokens: 2000,
    system: `你是一位資深程式碼審查員。審查以下 diff，找出：
1. Bug 和邏輯錯誤 (critical)
2. 安全漏洞 (critical)
3. 效能問題 (warning)
4. 程式碼風格建議 (suggestion)
 
以 JSON 陣列格式回傳，每個元素包含 file, line, severity, message, suggestedFix。`,
    messages: [{ role: "user", content: diff }],
  });
 
  return JSON.parse(response.content[0].text);
}
 
// AI 生成 Commit Message
async function generateCommitMessage(diff: string): Promise<string> {
  const response = await client.messages.create({
    model: "claude-haiku-4-20250514",
    max_tokens: 100,
    system: "根據 git diff 生成簡潔的 commit message。格式：type: description（不超過 72 字元）",
    messages: [{ role: "user", content: diff }],
  });
  return response.content[0].text;
}

# 場景：AI 輔助除錯
import anthropic
import traceback
 
client = anthropic.Anthropic()
 
def ai_debug_assistant(error: Exception, code_context: str) -> str:
    """當程式碼出錯時，讓 AI 分析原因並提供修復建議"""
    error_info = {
        "type": type(error).__name__,
        "message": str(error),
        "traceback": traceback.format_exc(),
    }
 
    response = client.messages.create(
        model="claude-sonnet-4-20250514",
        max_tokens=1000,
        system="""你是一位 Python 除錯專家。分析錯誤並提供修復建議。
 
輸出格式：
1. 錯誤原因：（一句話）
2. 根本問題：（為什麼會發生）
3. 修復方案：（具體的程式碼修改）""",
        messages=[{"role": "user", "content": f"""
程式碼：
```python
{code_context}