mirror of
https://github.com/affaan-m/everything-claude-code.git
synced 2026-04-17 23:53:30 +08:00
feat(ecc): prune plugin 43→12 items, promote 7 rules to .claude/rules/ (#245)
ECC community plugin pruning: removed 530+ non-essential files (.cursor/, .opencode/, docs/ja-JP, docs/zh-CN, docs/zh-TW, language-specific skills/agents/rules). Retained 4 agents, 3 commands, 5 skills. Promoted 13 rule files (8 common + 5 typescript) to .claude/rules/ for CC native loading. Extracted reusable patterns to EXTRACTED-PATTERNS.md.
This commit is contained in:
@@ -1,721 +0,0 @@
|
||||
---
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name: golang-testing
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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。
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---
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# Go 测试模式
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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。
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## 何时激活
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* 编写新的 Go 函数或方法时
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* 为现有代码添加测试覆盖率时
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* 为性能关键代码创建基准测试时
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* 为输入验证实现模糊测试时
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* 在 Go 项目中遵循 TDD 工作流时
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## Go 的 TDD 工作流
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### 红-绿-重构循环
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```
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RED → Write a failing test first
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GREEN → Write minimal code to pass the test
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REFACTOR → Improve code while keeping tests green
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REPEAT → Continue with next requirement
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```
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### Go 中的分步 TDD
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```go
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// Step 1: Define the interface/signature
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// calculator.go
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package calculator
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func Add(a, b int) int {
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panic("not implemented") // Placeholder
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}
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// Step 2: Write failing test (RED)
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// calculator_test.go
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package calculator
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import "testing"
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func TestAdd(t *testing.T) {
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got := Add(2, 3)
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want := 5
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if got != want {
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t.Errorf("Add(2, 3) = %d; want %d", got, want)
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}
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}
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// Step 3: Run test - verify FAIL
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// $ go test
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// --- FAIL: TestAdd (0.00s)
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// panic: not implemented
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// Step 4: Implement minimal code (GREEN)
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func Add(a, b int) int {
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return a + b
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}
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// Step 5: Run test - verify PASS
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// $ go test
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// PASS
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// Step 6: Refactor if needed, verify tests still pass
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```
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## 表驱动测试
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Go 测试的标准模式。以最少的代码实现全面的覆盖。
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```go
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func TestAdd(t *testing.T) {
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tests := []struct {
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name string
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a, b int
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expected int
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}{
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{"positive numbers", 2, 3, 5},
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{"negative numbers", -1, -2, -3},
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{"zero values", 0, 0, 0},
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{"mixed signs", -1, 1, 0},
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{"large numbers", 1000000, 2000000, 3000000},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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got := Add(tt.a, tt.b)
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if got != tt.expected {
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t.Errorf("Add(%d, %d) = %d; want %d",
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tt.a, tt.b, got, tt.expected)
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}
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})
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}
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}
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```
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|
||||
### 包含错误情况的表驱动测试
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|
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```go
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func TestParseConfig(t *testing.T) {
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tests := []struct {
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name string
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input string
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want *Config
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wantErr bool
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}{
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{
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name: "valid config",
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input: `{"host": "localhost", "port": 8080}`,
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want: &Config{Host: "localhost", Port: 8080},
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},
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{
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name: "invalid JSON",
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input: `{invalid}`,
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wantErr: true,
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},
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{
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name: "empty input",
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input: "",
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wantErr: true,
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},
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{
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name: "minimal config",
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input: `{}`,
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want: &Config{}, // Zero value config
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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got, err := ParseConfig(tt.input)
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|
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if tt.wantErr {
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if err == nil {
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t.Error("expected error, got nil")
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}
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return
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}
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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if !reflect.DeepEqual(got, tt.want) {
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t.Errorf("got %+v; want %+v", got, tt.want)
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}
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})
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}
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}
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```
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## 子测试和子基准测试
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||||
### 组织相关测试
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|
||||
```go
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func TestUser(t *testing.T) {
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// Setup shared by all subtests
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db := setupTestDB(t)
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t.Run("Create", func(t *testing.T) {
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user := &User{Name: "Alice"}
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err := db.CreateUser(user)
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if err != nil {
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t.Fatalf("CreateUser failed: %v", err)
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}
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if user.ID == "" {
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t.Error("expected user ID to be set")
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}
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})
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t.Run("Get", func(t *testing.T) {
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user, err := db.GetUser("alice-id")
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if err != nil {
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t.Fatalf("GetUser failed: %v", err)
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}
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if user.Name != "Alice" {
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t.Errorf("got name %q; want %q", user.Name, "Alice")
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}
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})
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t.Run("Update", func(t *testing.T) {
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// ...
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})
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t.Run("Delete", func(t *testing.T) {
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// ...
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||||
})
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||||
}
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||||
```
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||||
### 并行子测试
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||||
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||||
```go
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||||
func TestParallel(t *testing.T) {
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tests := []struct {
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name string
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||||
input string
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||||
}{
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||||
{"case1", "input1"},
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||||
{"case2", "input2"},
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||||
{"case3", "input3"},
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||||
}
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||||
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||||
for _, tt := range tests {
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tt := tt // Capture range variable
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||||
t.Run(tt.name, func(t *testing.T) {
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t.Parallel() // Run subtests in parallel
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||||
result := Process(tt.input)
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||||
// assertions...
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||||
_ = result
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||||
})
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||||
}
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||||
}
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||||
```
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||||
|
||||
## 测试辅助函数
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||||
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||||
### 辅助函数
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||||
|
||||
```go
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||||
func setupTestDB(t *testing.T) *sql.DB {
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||||
t.Helper() // Marks this as a helper function
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db, err := sql.Open("sqlite3", ":memory:")
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if err != nil {
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||||
t.Fatalf("failed to open database: %v", err)
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}
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// Cleanup when test finishes
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||||
t.Cleanup(func() {
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||||
db.Close()
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})
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// Run migrations
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||||
if _, err := db.Exec(schema); err != nil {
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||||
t.Fatalf("failed to create schema: %v", err)
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||||
}
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||||
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||||
return db
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}
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func assertNoError(t *testing.T, err error) {
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||||
t.Helper()
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||||
if err != nil {
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t.Fatalf("unexpected error: %v", err)
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||||
}
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||||
}
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func assertEqual[T comparable](t *testing.T, got, want T) {
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||||
t.Helper()
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if got != want {
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||||
t.Errorf("got %v; want %v", got, want)
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||||
}
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||||
}
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||||
```
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||||
|
||||
### 临时文件和目录
|
||||
|
||||
```go
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||||
func TestFileProcessing(t *testing.T) {
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||||
// Create temp directory - automatically cleaned up
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||||
tmpDir := t.TempDir()
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||||
|
||||
// Create test file
|
||||
testFile := filepath.Join(tmpDir, "test.txt")
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||||
err := os.WriteFile(testFile, []byte("test content"), 0644)
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||||
if err != nil {
|
||||
t.Fatalf("failed to create test file: %v", err)
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||||
}
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||||
|
||||
// Run test
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||||
result, err := ProcessFile(testFile)
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||||
if err != nil {
|
||||
t.Fatalf("ProcessFile failed: %v", err)
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||||
}
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|
||||
// Assert...
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||||
_ = result
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||||
}
|
||||
```
|
||||
|
||||
## 黄金文件
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||||
|
||||
针对存储在 `testdata/` 中的预期输出文件进行测试。
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||||
|
||||
```go
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||||
var update = flag.Bool("update", false, "update golden files")
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||||
|
||||
func TestRender(t *testing.T) {
|
||||
tests := []struct {
|
||||
name string
|
||||
input Template
|
||||
}{
|
||||
{"simple", Template{Name: "test"}},
|
||||
{"complex", Template{Name: "test", Items: []string{"a", "b"}}},
|
||||
}
|
||||
|
||||
for _, tt := range tests {
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||||
t.Run(tt.name, func(t *testing.T) {
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||||
got := Render(tt.input)
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||||
|
||||
golden := filepath.Join("testdata", tt.name+".golden")
|
||||
|
||||
if *update {
|
||||
// Update golden file: go test -update
|
||||
err := os.WriteFile(golden, got, 0644)
|
||||
if err != nil {
|
||||
t.Fatalf("failed to update golden file: %v", err)
|
||||
}
|
||||
}
|
||||
|
||||
want, err := os.ReadFile(golden)
|
||||
if err != nil {
|
||||
t.Fatalf("failed to read golden file: %v", err)
|
||||
}
|
||||
|
||||
if !bytes.Equal(got, want) {
|
||||
t.Errorf("output mismatch:\ngot:\n%s\nwant:\n%s", got, want)
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
## 使用接口进行模拟
|
||||
|
||||
### 基于接口的模拟
|
||||
|
||||
```go
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||||
// Define interface for dependencies
|
||||
type UserRepository interface {
|
||||
GetUser(id string) (*User, error)
|
||||
SaveUser(user *User) error
|
||||
}
|
||||
|
||||
// Production implementation
|
||||
type PostgresUserRepository struct {
|
||||
db *sql.DB
|
||||
}
|
||||
|
||||
func (r *PostgresUserRepository) GetUser(id string) (*User, error) {
|
||||
// Real database query
|
||||
}
|
||||
|
||||
// Mock implementation for tests
|
||||
type MockUserRepository struct {
|
||||
GetUserFunc func(id string) (*User, error)
|
||||
SaveUserFunc func(user *User) error
|
||||
}
|
||||
|
||||
func (m *MockUserRepository) GetUser(id string) (*User, error) {
|
||||
return m.GetUserFunc(id)
|
||||
}
|
||||
|
||||
func (m *MockUserRepository) SaveUser(user *User) error {
|
||||
return m.SaveUserFunc(user)
|
||||
}
|
||||
|
||||
// Test using mock
|
||||
func TestUserService(t *testing.T) {
|
||||
mock := &MockUserRepository{
|
||||
GetUserFunc: func(id string) (*User, error) {
|
||||
if id == "123" {
|
||||
return &User{ID: "123", Name: "Alice"}, nil
|
||||
}
|
||||
return nil, ErrNotFound
|
||||
},
|
||||
}
|
||||
|
||||
service := NewUserService(mock)
|
||||
|
||||
user, err := service.GetUserProfile("123")
|
||||
if err != nil {
|
||||
t.Fatalf("unexpected error: %v", err)
|
||||
}
|
||||
if user.Name != "Alice" {
|
||||
t.Errorf("got name %q; want %q", user.Name, "Alice")
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
## 基准测试
|
||||
|
||||
### 基本基准测试
|
||||
|
||||
```go
|
||||
func BenchmarkProcess(b *testing.B) {
|
||||
data := generateTestData(1000)
|
||||
b.ResetTimer() // Don't count setup time
|
||||
|
||||
for i := 0; i < b.N; i++ {
|
||||
Process(data)
|
||||
}
|
||||
}
|
||||
|
||||
// Run: go test -bench=BenchmarkProcess -benchmem
|
||||
// Output: BenchmarkProcess-8 10000 105234 ns/op 4096 B/op 10 allocs/op
|
||||
```
|
||||
|
||||
### 不同大小的基准测试
|
||||
|
||||
```go
|
||||
func BenchmarkSort(b *testing.B) {
|
||||
sizes := []int{100, 1000, 10000, 100000}
|
||||
|
||||
for _, size := range sizes {
|
||||
b.Run(fmt.Sprintf("size=%d", size), func(b *testing.B) {
|
||||
data := generateRandomSlice(size)
|
||||
b.ResetTimer()
|
||||
|
||||
for i := 0; i < b.N; i++ {
|
||||
// Make a copy to avoid sorting already sorted data
|
||||
tmp := make([]int, len(data))
|
||||
copy(tmp, data)
|
||||
sort.Ints(tmp)
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
### 内存分配基准测试
|
||||
|
||||
```go
|
||||
func BenchmarkStringConcat(b *testing.B) {
|
||||
parts := []string{"hello", "world", "foo", "bar", "baz"}
|
||||
|
||||
b.Run("plus", func(b *testing.B) {
|
||||
for i := 0; i < b.N; i++ {
|
||||
var s string
|
||||
for _, p := range parts {
|
||||
s += p
|
||||
}
|
||||
_ = s
|
||||
}
|
||||
})
|
||||
|
||||
b.Run("builder", func(b *testing.B) {
|
||||
for i := 0; i < b.N; i++ {
|
||||
var sb strings.Builder
|
||||
for _, p := range parts {
|
||||
sb.WriteString(p)
|
||||
}
|
||||
_ = sb.String()
|
||||
}
|
||||
})
|
||||
|
||||
b.Run("join", func(b *testing.B) {
|
||||
for i := 0; i < b.N; i++ {
|
||||
_ = strings.Join(parts, "")
|
||||
}
|
||||
})
|
||||
}
|
||||
```
|
||||
|
||||
## 模糊测试 (Go 1.18+)
|
||||
|
||||
### 基本模糊测试
|
||||
|
||||
```go
|
||||
func FuzzParseJSON(f *testing.F) {
|
||||
// Add seed corpus
|
||||
f.Add(`{"name": "test"}`)
|
||||
f.Add(`{"count": 123}`)
|
||||
f.Add(`[]`)
|
||||
f.Add(`""`)
|
||||
|
||||
f.Fuzz(func(t *testing.T, input string) {
|
||||
var result map[string]interface{}
|
||||
err := json.Unmarshal([]byte(input), &result)
|
||||
|
||||
if err != nil {
|
||||
// Invalid JSON is expected for random input
|
||||
return
|
||||
}
|
||||
|
||||
// If parsing succeeded, re-encoding should work
|
||||
_, err = json.Marshal(result)
|
||||
if err != nil {
|
||||
t.Errorf("Marshal failed after successful Unmarshal: %v", err)
|
||||
}
|
||||
})
|
||||
}
|
||||
|
||||
// Run: go test -fuzz=FuzzParseJSON -fuzztime=30s
|
||||
```
|
||||
|
||||
### 多输入模糊测试
|
||||
|
||||
```go
|
||||
func FuzzCompare(f *testing.F) {
|
||||
f.Add("hello", "world")
|
||||
f.Add("", "")
|
||||
f.Add("abc", "abc")
|
||||
|
||||
f.Fuzz(func(t *testing.T, a, b string) {
|
||||
result := Compare(a, b)
|
||||
|
||||
// Property: Compare(a, a) should always equal 0
|
||||
if a == b && result != 0 {
|
||||
t.Errorf("Compare(%q, %q) = %d; want 0", a, b, result)
|
||||
}
|
||||
|
||||
// Property: Compare(a, b) and Compare(b, a) should have opposite signs
|
||||
reverse := Compare(b, a)
|
||||
if (result > 0 && reverse >= 0) || (result < 0 && reverse <= 0) {
|
||||
if result != 0 || reverse != 0 {
|
||||
t.Errorf("Compare(%q, %q) = %d, Compare(%q, %q) = %d; inconsistent",
|
||||
a, b, result, b, a, reverse)
|
||||
}
|
||||
}
|
||||
})
|
||||
}
|
||||
```
|
||||
|
||||
## 测试覆盖率
|
||||
|
||||
### 运行覆盖率
|
||||
|
||||
```bash
|
||||
# Basic coverage
|
||||
go test -cover ./...
|
||||
|
||||
# Generate coverage profile
|
||||
go test -coverprofile=coverage.out ./...
|
||||
|
||||
# View coverage in browser
|
||||
go tool cover -html=coverage.out
|
||||
|
||||
# View coverage by function
|
||||
go tool cover -func=coverage.out
|
||||
|
||||
# Coverage with race detection
|
||||
go test -race -coverprofile=coverage.out ./...
|
||||
```
|
||||
|
||||
### 覆盖率目标
|
||||
|
||||
| 代码类型 | 目标 |
|
||||
|-----------|--------|
|
||||
| 关键业务逻辑 | 100% |
|
||||
| 公共 API | 90%+ |
|
||||
| 通用代码 | 80%+ |
|
||||
| 生成的代码 | 排除 |
|
||||
|
||||
### 从覆盖率中排除生成的代码
|
||||
|
||||
```go
|
||||
//go:generate mockgen -source=interface.go -destination=mock_interface.go
|
||||
|
||||
// In coverage profile, exclude with build tags:
|
||||
// go test -cover -tags=!generate ./...
|
||||
```
|
||||
|
||||
## HTTP 处理器测试
|
||||
|
||||
```go
|
||||
func TestHealthHandler(t *testing.T) {
|
||||
// Create request
|
||||
req := httptest.NewRequest(http.MethodGet, "/health", nil)
|
||||
w := httptest.NewRecorder()
|
||||
|
||||
// Call handler
|
||||
HealthHandler(w, req)
|
||||
|
||||
// Check response
|
||||
resp := w.Result()
|
||||
defer resp.Body.Close()
|
||||
|
||||
if resp.StatusCode != http.StatusOK {
|
||||
t.Errorf("got status %d; want %d", resp.StatusCode, http.StatusOK)
|
||||
}
|
||||
|
||||
body, _ := io.ReadAll(resp.Body)
|
||||
if string(body) != "OK" {
|
||||
t.Errorf("got body %q; want %q", body, "OK")
|
||||
}
|
||||
}
|
||||
|
||||
func TestAPIHandler(t *testing.T) {
|
||||
tests := []struct {
|
||||
name string
|
||||
method string
|
||||
path string
|
||||
body string
|
||||
wantStatus int
|
||||
wantBody string
|
||||
}{
|
||||
{
|
||||
name: "get user",
|
||||
method: http.MethodGet,
|
||||
path: "/users/123",
|
||||
wantStatus: http.StatusOK,
|
||||
wantBody: `{"id":"123","name":"Alice"}`,
|
||||
},
|
||||
{
|
||||
name: "not found",
|
||||
method: http.MethodGet,
|
||||
path: "/users/999",
|
||||
wantStatus: http.StatusNotFound,
|
||||
},
|
||||
{
|
||||
name: "create user",
|
||||
method: http.MethodPost,
|
||||
path: "/users",
|
||||
body: `{"name":"Bob"}`,
|
||||
wantStatus: http.StatusCreated,
|
||||
},
|
||||
}
|
||||
|
||||
handler := NewAPIHandler()
|
||||
|
||||
for _, tt := range tests {
|
||||
t.Run(tt.name, func(t *testing.T) {
|
||||
var body io.Reader
|
||||
if tt.body != "" {
|
||||
body = strings.NewReader(tt.body)
|
||||
}
|
||||
|
||||
req := httptest.NewRequest(tt.method, tt.path, body)
|
||||
req.Header.Set("Content-Type", "application/json")
|
||||
w := httptest.NewRecorder()
|
||||
|
||||
handler.ServeHTTP(w, req)
|
||||
|
||||
if w.Code != tt.wantStatus {
|
||||
t.Errorf("got status %d; want %d", w.Code, tt.wantStatus)
|
||||
}
|
||||
|
||||
if tt.wantBody != "" && w.Body.String() != tt.wantBody {
|
||||
t.Errorf("got body %q; want %q", w.Body.String(), tt.wantBody)
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
## 命令测试
|
||||
|
||||
```bash
|
||||
# Run all tests
|
||||
go test ./...
|
||||
|
||||
# Run tests with verbose output
|
||||
go test -v ./...
|
||||
|
||||
# Run specific test
|
||||
go test -run TestAdd ./...
|
||||
|
||||
# Run tests matching pattern
|
||||
go test -run "TestUser/Create" ./...
|
||||
|
||||
# Run tests with race detector
|
||||
go test -race ./...
|
||||
|
||||
# Run tests with coverage
|
||||
go test -cover -coverprofile=coverage.out ./...
|
||||
|
||||
# Run short tests only
|
||||
go test -short ./...
|
||||
|
||||
# Run tests with timeout
|
||||
go test -timeout 30s ./...
|
||||
|
||||
# Run benchmarks
|
||||
go test -bench=. -benchmem ./...
|
||||
|
||||
# Run fuzzing
|
||||
go test -fuzz=FuzzParse -fuzztime=30s ./...
|
||||
|
||||
# Count test runs (for flaky test detection)
|
||||
go test -count=10 ./...
|
||||
```
|
||||
|
||||
## 最佳实践
|
||||
|
||||
**应该:**
|
||||
|
||||
* **先**写测试 (TDD)
|
||||
* 使用表驱动测试以实现全面覆盖
|
||||
* 测试行为,而非实现
|
||||
* 在辅助函数中使用 `t.Helper()`
|
||||
* 对于独立的测试使用 `t.Parallel()`
|
||||
* 使用 `t.Cleanup()` 清理资源
|
||||
* 使用描述场景的有意义的测试名称
|
||||
|
||||
**不应该:**
|
||||
|
||||
* 直接测试私有函数 (通过公共 API 测试)
|
||||
* 在测试中使用 `time.Sleep()` (使用通道或条件)
|
||||
* 忽略不稳定的测试 (修复或移除它们)
|
||||
* 模拟所有东西 (在可能的情况下优先使用集成测试)
|
||||
* 跳过错误路径测试
|
||||
|
||||
## 与 CI/CD 集成
|
||||
|
||||
```yaml
|
||||
# GitHub Actions example
|
||||
test:
|
||||
runs-on: ubuntu-latest
|
||||
steps:
|
||||
- uses: actions/checkout@v4
|
||||
- uses: actions/setup-go@v5
|
||||
with:
|
||||
go-version: '1.22'
|
||||
|
||||
- name: Run tests
|
||||
run: go test -race -coverprofile=coverage.out ./...
|
||||
|
||||
- name: Check coverage
|
||||
run: |
|
||||
go tool cover -func=coverage.out | grep total | awk '{print $3}' | \
|
||||
awk -F'%' '{if ($1 < 80) exit 1}'
|
||||
```
|
||||
|
||||
**记住**:测试即文档。它们展示了你的代码应如何使用。清晰地编写它们并保持更新。
|
||||
Reference in New Issue
Block a user