英文:
TestMain multiple definitions found
问题
如果我定义了两个测试，每个测试都有自己的TestMain方法，go test会报错："multiple definitions found of TestMain"。
我可以理解并且预料到这种行为，因为在同一个包中不应该有多个TestMain。然而，我现在不知道该怎么办。每个测试套件都有自己的需求。我需要创建不同的TestMain来设置测试，当然，不能重命名我的包。
在其他语言中，我可以很容易地使用像before、after这样的设置方法，这些方法是特定于测试类的。
我可能会去使用testify的测试套件。可惜标准库不支持这个功能。
你有什么建议吗？
英文:
If I define, two tests, each with its own TestMain method, go test errors: "multiple definitions found of TestMain".
I can understand and was expecting this behaviour actually, because, there should not be more than one TestMain in the same package. However, I don't know what to do now. Each test suite has its own needs. I need to create distinct TestMains to setup the tests, of course, without renaming my packages.
I could do that easily in other languages with setup methods like before, after, which is unique to a test class.
I'll probably go and use testify's suites. Sad that this is not supported in stdlib.
Do you have any suggestions?
答案1
得分: 4
你可以使用M.Run。
func TestMain(m *testing.M) {
setup()
code := m.Run()
close()
os.Exit(code)
}
有关更多信息，请参阅subtest。
更详细的示例：
package main
import (
"testing"
)
func setup() {}
func teardown() {}
func setup2() {}
func teardown2() {}
func TestMain(m *testing.M) {
var wrappers = []struct {
Setup func()
Teardown func()
}{
{
Setup: setup,
Teardown: teardown,
},
{
Setup: setup2,
Teardown: teardown2,
},
}
for _, w := range wrappers {
w.Setup()
code := m.Run()
w.Teardown()
if code != 0 {
panic("code isn't null")
}
}
}
英文:
You can use M.Run.
func TestMain(m *testing.M) {
setup()
code := m.Run()
close()
os.Exit(code)
}
See subtest for additional info.
More detailed example:
package main
import (
"testing"
)
func setup() {}
func teardown() {}
func setup2() {}
func teardown2() {}
func TestMain(m *testing.M) {
var wrappers = []struct {
Setup func()
Teardown func()
}{
{
Setup: setup,
Teardown: teardown,
},
{
Setup: setup2,
Teardown: teardown2,
},
}
for _, w := range wrappers {
w.Setup()
code := m.Run()
w.Teardown()
if code != 0 {
panic("code insn't null")
}
}
}
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