github.com/nibnait/go-learn@v0.0.0-20220227013611-dfa47ea6d2da/src/test/chapter/ch2/17_extension_test.go (about)

     1  package ch2
     2  
     3  import (
     4  	"fmt"
     5  	"testing"
     6  )
     7  
     8  type Pet struct {
     9  }
    10  
    11  func (p *Pet) speak() {
    12  	fmt.Print("...")
    13  }
    14  
    15  func (p *Pet) speakTo(host string) {
    16  	p.speak()
    17  	fmt.Println("  ", host)
    18  }
    19  
    20  type Dog struct {
    21  	Pet
    22  }
    23  
    24  func (d *Dog) speak() {
    25  	fmt.Println("汪！汪！")
    26  }
    27  
    28  func TestDog(t *testing.T) {
    29  	dog := new(Dog)
    30  	dog.speakTo("tian")
    31  }