chromedp/pool_test.go

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package chromedp
import (
"context"
"net"
"strconv"
"strings"
"testing"
)
func TestAllocatePortInUse(t *testing.T) {
t.Parallel()
// take a random available port
l, err := net.Listen("tcp4", "localhost:0")
if err != nil {
t.Fatal(err)
}
defer l.Close()
ctxt, cancel := context.WithCancel(context.Background())
defer cancel()
// make the pool use the port already in use via a port range
_, portStr, _ := net.SplitHostPort(l.Addr().String())
port, _ := strconv.Atoi(portStr)
pool, err := NewPool(PortRange(port, port+1))
if err != nil {
t.Fatal(err)
}
c, err := pool.Allocate(ctxt)
if err != nil {
want := "address already in use"
got := err.Error()
if !strings.Contains(got, want) {
t.Fatalf("wanted error to contain %q, but got %q", want, got)
}
} else {
t.Fatal("wanted Allocate to error if port is in use")
c.Release()
}
}