2024-11-16 17:22:21 +08:00
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# 程序配置管理
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## 测试验证包
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要考虑测序的是否如预期运行
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## 如果定义单元测试
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1. 包的命名规范: pkg_test
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我想测试 LoadConfigFromYaml 这个函数能不能正常运行, Go里的每一个Package 都允许有2个包:
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+ pkg: 目标包
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+ pkg_test: 正对目标包的测试包
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2. 定义测试函数: TestLoadConfigFromYaml(t *testing.T)
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+ TestXXXX
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+ (t *testing.T)
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那么你的单元测试定义成功:
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## 如何查看单测单元的信息
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在单元测试里: 是不是被显示
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```go
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t.Log(config.Get())
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```
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我Run时, vscode生成的 go test命令
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```sh
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Running tool: /usr/local/go/bin/go test -timeout 300s -run ^TestLoadConfigFromYaml$ gitlab.com/go-course-project/go17/book/config -v -count=1
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```
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怎么才能配置vscode 添加go test的 参数, 你需要对的vscode做配置
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修改 TestFlag
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```json
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"go.testFlags": [
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"-v",
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"-count=1"
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],
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```
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+ -v 就是打印 debug信息， t.Log的信息
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+ -count=1: 必须执行一次
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## 为你的对象实现Stringger 接口
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```go
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// &{0x102317ec0 0x10231c8a0}
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//
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// String() string, fmt.Strigger接口
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//
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// fmt.
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func (c *Config) String() string {
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v, _ := json.Marshal(c)
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return string(v)
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}
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```
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```sh
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/Users/yumaojun/Projects/go-course/go17/book/config/load_test.go:17: {"app":{"host":"localhost","port":8090},"mysql":{"host":"127.0.0.1","port":3306,"database":"test","username":"root","password":"888888","debug":false}}
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```
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```go
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// Stringer is implemented by any value that has a String method,
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// which defines the “native” format for that value.
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// The String method is used to print values passed as an operand
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// to any format that accepts a string or to an unformatted printer
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// such as Print.
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type Stringer interface {
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String() string
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}
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```
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## debug 测试
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2024-11-16 17:53:04 +08:00
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才是一个程序员入门的标准，
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Debug是一个什么事儿: 让你的代码 一行一行的运行，你人肉观察 程序的每一步 是否符合你的预期(这里的变量是不是对的)
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1. 添加程序断点: 程序停止那里，等待运行
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+ Continue: 继续到下一个端点
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+ Step Over: 下一步
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+ Step In: 单步调试
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+ Step Out: 跳出当前调试步骤
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学了Debug 遇到了问题，写个单元测试，看程序每一步的运行状态是否是正确的。
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