Just verifying that the WithContext does not abort the other goroutines in an errgroup

test_errgroup_context.go

package main

import (
        "context"
        "fmt"
        "math/rand"
        "time"

        "golang.org/x/sync/errgroup"
)

func main() {
        ctx := context.Background()
        grp, gCtx := errgroup.WithContext(ctx)
        for i := 0; i < 10; i++ {
                grp.Go(func() error {
                        rand.Seed(time.Now().UnixNano())
                        t := rand.Intn(10)
                        fmt.Printf("Sleeping %d seconds...\n", t)
                        time.Sleep(time.Duration(t) * time.Second)
                        fmt.Println("context err: ", gCtx.Err())
                        fmt.Printf("Sleeping %d seconds...\n", t)
                        time.Sleep(time.Duration(t) * time.Second)
                        fmt.Println("context err: ", gCtx.Err())
                        return fmt.Errorf("This is an error")
                })
        }
        grp.Wait()
}