Can't assert a panic from a sub goroutine ?

[kuchaguangjie]

package error_learn

import (
    "fmt"
    "github.com/stretchr/testify/assert"
    "testing"
    "time"
)

// panic in sub goroutine, recover in main goroutine,
func panicInSubGoroutine() {
    // recover,  in main goroutine,
    defer func() {
        if r := recover(); r != nil {
            fmt.Printf("recover from panic: %v\n", r)
        }
    }()

    go func() {
        // panic, in sub goroutine,
        panic("panic occurred!")
    }()

    time.Sleep(1 * time.Second)
}

func TestPanicInSubGoroutine(t *testing.T) {
    assert.Panics(t, panicInSubGoroutine)
}

Sub goroutine panic, assert the main goroutine, the test still fail with:

panic: panic occurred!

Does that means assert.Panics() can't assert a panic from sub goroutine ?

[Antonboom]

This is not testify issue, this is Golang panic-recover design.

• https://go.dev/blog/defer-panic-and-recover
• https://go.dev/wiki/PanicAndRecover

A panic cannot be recovered by a different goroutine.

P.S. Also, look at testifylint#go-require

[Antonboom]

Duplicate of https://github.com/stretchr/testify/discussions/1617

[brackendawson]

Thank you @Antonboom, quite correct.