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test: adjust a test to work with js/wasm's background goroutine

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Fixes #34768

Change-Id: Ic73591f620cdee5bc7203483902e6ba98d2c442b
Reviewed-on: https://go-review.googlesource.com/c/go/+/200438
Reviewed-by: Bryan C. Mills <bcmills@google.com>
This commit is contained in:
Brad Fitzpatrick 2019-10-10 19:23:03 +00:00
parent 26ff21d44d
commit 6dc740f092
1 changed files with 13 additions and 2 deletions
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15
test/goprint.go
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@ -9,13 +9,24 @@
package main
import (
"log"
"runtime"
"time"
)
func main() {
numg0 := runtime.NumGoroutine()
deadline := time.Now().Add(10 * time.Second)
go println(42, true, false, true, 1.5, "world", (chan int)(nil), []int(nil), (map[string]int)(nil), (func())(nil), byte(255))
for runtime.NumGoroutine() > 1 {
time.Sleep(10*time.Millisecond)
for {
numg := runtime.NumGoroutine()
if numg > numg0 {
if time.Now().After(deadline) {
log.Fatalf("%d goroutines > initial %d after deadline", numg, numg0)
}
runtime.Gosched()
continue
}
break
}
}