pkg/testutils/utils_test.go
Peter Bourgon 1543060953 Only import "testing" from *_test.go
This prevents the testing package flags from leaking into the flagsets
of binaries that import docker. I left integration-cli alone.

Docker-DCO-1.1-Signed-off-by: Peter Bourgon <peter@bourgon.org> (github: peterbourgon)
2014-08-07 14:25:21 -07:00

37 lines
774 B
Go

package testutils
import (
"math/rand"
"testing"
"time"
)
const chars = "abcdefghijklmnopqrstuvwxyz" +
"ABCDEFGHIJKLMNOPQRSTUVWXYZ" +
"~!@#$%^&*()-_+={}[]\\|<,>.?/\"';:` "
// Timeout calls f and waits for 100ms for it to complete.
// If it doesn't, it causes the tests to fail.
// t must be a valid testing context.
func Timeout(t *testing.T, f func()) {
onTimeout := time.After(100 * time.Millisecond)
onDone := make(chan bool)
go func() {
f()
close(onDone)
}()
select {
case <-onTimeout:
t.Fatalf("timeout")
case <-onDone:
}
}
// RandomString returns random string of specified length
func RandomString(length int) string {
res := make([]byte, length)
for i := 0; i < length; i++ {
res[i] = chars[rand.Intn(len(chars))]
}
return string(res)
}