如何在golang中测试打印到控制台的方法？

Question

I have next struct.

package logger

import "fmt"

type IPrinter interface {
    Print(value string)
}

type ConsolePrinter struct{}

func (cp *ConsolePrinter) Print(value string) {
    fmt.Printf("this is value: %s", value)
}

Test coverage says I need to test that ConsolePrinter Print method.

How can I cover this method?

Thanks.

Answer 1

Use Examples to convey the usage of a function.

Don't fret over 100% test coverage, especially for simple straightforward functions.

func ExampleHello() {
    fmt.Println("hello")
    // Output: hello
}

The additional benefit is that examples are outputted in a generated doc with go doc tool.