# 试用 go test suite
(金庆的专栏 2020.3)
github.com/stretchr/testify/suite 提供了测试套件功能,
可以在整个套件开始结束时执行动作,也可以在每个测试开始结束时执行动作。
假设有以下2个函数需要测试:
```
func foo() {
fmt.Printf("foo...\n")
}
func goo() {
fmt.Printf("goo...\n")
}
```
建立如下测试文件:
```
import (
"fmt"
"testing"
"github.com/stretchr/testify/suite"
)
type _Suite struct {
suite.Suite
}
func (s *_Suite) AfterTest(suiteName, testName string) {
fmt.Printf("AfterTest: suiteName=%s, testName=%s\n", suiteName, testName)
}
func (s *_Suite) BeforeTest(suiteName, testName string) {
fmt.Printf("BeforeTest: suiteName=%s, testName=%s\n", suiteName, testName)
}
func (s *_Suite) SetupSuite() {
fmt.Printf("SetupSuite()...\n")
}
func (s *_Suite) TearDownSuite() {
fmt.Printf("TearDownSuite()...\n")
}
func (s *_Suite) SetupTest() {
fmt.Printf("SetupTest()...\n")
}
func (s *_Suite) TearDownTest() {
fmt.Printf("TearDownTest()...\n")
}
func (s *_Suite) TestFoo() {
foo()
}
func (s *_Suite) TestGoo() {
goo()
}
// 让 go test 执行测试
func TestGooFoo(t *testing.T) {
suite.Run(t, new(_Suite))
}
```
输出如下:
```
=== RUN TestGooFoo
SetupSuite()...
=== RUN TestGooFoo/TestFoo
SetupTest()...
BeforeTest: suiteName=_Suite, testName=TestFoo
foo...
AfterTest: suiteName=_Suite, testName=TestFoo
TearDownTest()...
=== RUN TestGooFoo/TestGoo
SetupTest()...
BeforeTest: suiteName=_Suite, testName=TestGoo
goo...
AfterTest: suiteName=_Suite, testName=TestGoo
TearDownTest()...
TearDownSuite()...
--- PASS: TestGooFoo (0.00s)
--- PASS: TestGooFoo/TestFoo (0.00s)
--- PASS: TestGooFoo/TestGoo (0.00s)
PASS
```
SetupSuite()/TearDownSuite() 仅执行一次,
而 SetupTest()/TearDownTest()/BeforeTest()/AfterTest()对套件中的每个测试执行一次。
缺省情况下,Suite 使用 assert.Assertion 执行断言, 见Suite定义:
```
type Suite struct {
*assert.Assertions
require *require.Assertions
t *testing.T
}
```
可以这样执行多个断言,失败时仍执行其他断言:
```
func (m *MySuite) TestAdd() {
m.Equal(1, Add(1, 1)) // FAIL
m.Equal(0, Add(1, 1)) // FAIL
}
```
可以重载成使用 require.Assertion,失败时中断执行:
```
type MySuite struct {
suite.Suite
*require.Assertions
}
func (m *MySuite) TestAdd() {
m.Equal(1, Add(1, 1)) // FAIL and return
m.Equal(0, Add(1, 1)) // 不执行
}
```
或者任意指定:
```
m.Assert().Equal(1, 2)
m.Require().Equal(1, 2)
```