go-advanced

Go 高级实践

本文档是从 @go-basics 分割出来的高级主题部分，涵盖测试策略、性能优化、安全实践和最佳实践。

⚠️ 执行原则

MUST 遵循以下Go高级开发准则：

• MUST 编写全面的单元测试和集成测试
• NEVER 忽略错误处理和边界情况
• ALWAYS 进行性能基准测试
• DO NOT 在生产环境使用调试代码
• MUST 遵循Go语言的安全最佳实践
• ALWAYS 优化goroutine和channel的使用

测试策略

"github.com/yourname/project/internal/repository"

)

// ✅ 推荐：表格驱动测试 func TestUser_Validate(t *testing.T) { tests := []struct { name string user models.User wantErr bool errField string }{ { name: "valid user", user: models.User{ Username: "john_doe", Email: "[email protected]", }, wantErr: false, }, { name: "empty username", user: models.User{ Username: "", Email: "[email protected]", }, wantErr: true, errField: "username", }, { name: "invalid email", user: models.User{ Username: "john_doe", Email: "invalid-email", }, wantErr: true, errField: "email", }, }

for _, tt := range tests {
    t.Run(tt.name, func(t *testing.T) {
        err := tt.user.Validate()
        if tt.wantErr {
            assert.Error(t, err)
            if tt.errField != "" {
                assert.Contains(t, err.Error(), tt.errField)
            }
        } else {
            assert.NoError(t, err)
        }
    })
}

}

// ✅ 推荐：使用 testify 增强断言 func TestUserService_CreateUser(t *testing.T) { // Setup mockRepo := &repository.MockUserRepository{} service := NewUserService(mockRepo)

// Test data
username := "john_doe"
email := "[email protected]"

// Expectations
expectedUser := &models.User{
    Username: username,
    Email:    email,
}
mockRepo.On("Create", mock.Anything, mock.MatchedBy(func(user *models.User) bool {
    return user.Username == username && user.Email == email
})).Return(nil).Once()