Idea: Use the OS Feature `trap` to catch SIGINTs when running tests to force cleanup

[mahaffey]

Initially opened here: hashicorp/terraform-aws-vault#153

Recently learned about traps and catching different signals and have been implementing them wherever I can in my Bash scripts.

After reading https://github.com/hashicorp/terraform-aws-vault/blob/master/test/README.md they came into mind in regards to cutting the tests short and the environment not properly cleaning up.

For go usage see: https://stackoverflow.com/questions/11268943/is-it-possible-to-capture-a-ctrlc-signal-and-run-a-cleanup-function-in-a-defe

example trap:

package main

import (
    "fmt"
    "os"
    "os/signal"
    "syscall"
    "time" // or "runtime"
)

func cleanup() {
    fmt.Println("cleanup")
}

func main() {
    c := make(chan os.Signal)
    signal.Notify(c, os.Interrupt, syscall.SIGTERM)
    go func() {
        <-c
        cleanup()
        os.Exit(1)
    }()

    for {
        fmt.Println("sleeping...")
        time.Sleep(10 * time.Second) // or runtime.Gosched() or similar per @misterbee
    }
}

[brikis98]

Neat idea. Two questions:

1. Is there a way to somehow apply this to all tests so any clean up work they scheduled in defer executes before exiting?
2. Does this work to prevent go test from exiting due to hitting the timeout (default is just 10m, which isn't much for infrastructure testing).

[invidian]

See also golang/go#41891 I guess.

[james03160927]

Closing this issue due to 6 years of inactivity. Feel free to reopen if it still needs to be addressed.