golang-testing

What this skill does

When applied, it prepends a system prompt before your request is sent — no extra calls and no change to how you are billed beyond the added tokens.

---
name: golang-testing
description: Go测试模式包括表格驱动测试、子测试、基准测试、模糊测试和测试覆盖率。遵循TDD方法论，采用地道的Go实践。
origin: ECC
---

# Go 测试模式

遵循 TDD 方法论，用于编写可靠、可维护测试的全面 Go 测试模式。

## 何时激活

* 编写新的 Go 函数或方法时
* 为现有代码添加测试覆盖率时
* 为性能关键代码创建基准测试时
* 为输入验证实现模糊测试时
* 在 Go 项目中遵循 TDD 工作流时

## Go 的 TDD 工作流

### 红-绿-重构循环

```
RED     → 首先编写一个失败的测试
GREEN   → 编写最少的代码来通过测试
REFACTOR → 改进代码，同时保持测试通过
REPEAT  → 继续处理下一个需求
```

### Go 中的分步 TDD

```go
// Step 1: Define the interface/signature
// calculator.go
package calculator

func Add(a, b int) int {
    panic("not implemented") // Placeholder
}

// Step 2: Write failing test (RED)
// calculator_test.go
package calculator

import "testing"

func TestAdd(t *testing.T) {
    got := Add(2, 3)
    want := 5
    if got != want {
        t.Errorf("Add(2, 3) = %d; want %d", got, want)
    }
}

// Step 3: Run test - verify FAIL
// $ go test
// --- FAIL: TestAdd (0.00s)
// panic: not implemented

// Step 4: Implement minimal code (GREEN)
func Add(a, b int) int {
    return a + b
}

// Step 5: Run test - verify PASS
// $ go test
// PASS

// Step 6: Refactor if needed, verify tests still pass
```

## 表驱动测试

Go 测试的标准模式。以最少的代码实现全面的覆盖。

```go
func TestAdd(t *testing.T) {
    tests := []struct {
        name     string
        a, b     int
        expected int
    }{
        {"positive numbers", 2, 3, 5},
        {"negative numbers", -1, -2, -3},
        {"zero values", 0, 0, 0},
        {"mixed signs", -1, 1, 0},
        {"large numbers", 1000000, 2000000, 3000000},
    }

    for _, tt := range tests {
        t.Run(tt.name, func(t *testing.T) {
            got := Add(tt.a, tt.b)
            if got != tt.expected {
                t.Errorf("Add(%d, %d) = %d; want %d",
                    tt.a, tt.b, got, tt.expected)
            }
        })
    }
}
```

### 包含错误情况的表驱动测试

```go
func TestParseConfig(t *testing.T) {
    tests := []struct {
        name    string
        input   string
        want    *Config
        wantErr bool
    }{
        {
            name:  "valid con

Use this skill

{
  "model": "gpt-4o-mini",
  "skill": "imp-0e4653da-42d4-41f3-874e-dc51426c1b93",
  "messages": [{ "role": "user", "content": "…" }]
}

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