Go-单元测试-Test

单元测试

• 文件名以 _test.go 结尾
• 函数名以 Test 开头
• 函数参数固定 t *testing.T
• 运行单元测试 go test

Demo

• 源文件

  package unit
  
  import "strings"
  
  // Splite 分割字符串
  func Splite(str string, delimiter string) []string {
  	reslut := make([]string, 10)
  	index := 0
  
  	for index >= 0 {
  		index := strings.Index(str, delimiter)
  		if index == -1 {
  			break
  		}
  		reslut = append(reslut, str[:index])
  		str = str[index+1:]
  	}
  	reslut = append(reslut, str[index:])
  	return reslut
  }
  
  

• 测试文件

  package unit
  
  import (
  	"reflect"
  	"testing"
  )
  
  func TestSplit(t *testing.T) {
  	got := Split("baba", "b")
  	want := []string{"", "a", "a"}
  	if !reflect.DeepEqual(got, want) {
  		t.Errorf("got: %v want:%v", got, want)
  	}
  }
  

• 测试组与子测试

  package unit
  
  import (
  	"reflect"
  	"testing"
  )
  
  func TestSplit(t *testing.T) {
  	// 普通测试
  	got := Split("baba", "b")
  	want := []string{"", "a", "a"}
  	if !reflect.DeepEqual(got, want) {
  		t.Errorf("got: %v want:%v", got, want)
  	}
  
  	// 测试组
  	type testCase struct {
  		str string
  		deli string
  		want []string
  	}
  	testGroup := []testCase{
  		{
  			str:  "abababaaab",
  			deli: "a",
  			want: []string{"a", "b", "c"},
  		},
  	}
  	for _, member := range testGroup{
  		result := Split(member.str, member.deli)
  		if !reflect.DeepEqual(member.want, result) {
  			t.Errorf("param: %v %v want: %v but_get: %v", member.str, member.deli, member.want, result)
  		}
  	}
  
  	// 子测试
  	ChildTestCase := map[string]testCase{
  		"caseOne": {
  			str:  "abababaaab",
  			deli: "a",
  			want: []string{"a", "b", "c"},
  		},
  	}
  	for name, testCase := range ChildTestCase {
  		// 子测试
  		t.Run(name, func(t *testing.T) {
  			result := Split(testCase.str, testCase.deli)
  			if !reflect.DeepEqual(testCase.want, result) {
  				t.Errorf("param: %v %v want: %v but_get: %v", testCase.str, testCase.deli, testCase.want, result)
  			}
  		})
  	}
  }