subprocess_posix_test.go

// Copyright 2012 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

//go:build !windows
// +build !windows

package nin

import (
	"syscall"
	"testing"
)

func subprocessTestFixUlimit(t *testing.T, numHandles int) {
	var r syscall.Rlimit
	if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &r); err != nil {
		t.Fatal("error getting rlimit ", err)
	}
	if r.Cur < uint64(numHandles) {
		if r.Max < uint64(numHandles) {
			t.Fatal("raise [ulimit -n] above %u (currently %lu) to make this test go", uint64(numHandles), r.Cur)
		}
		// Lots of test cases open files, so make it a bit larger.
		r.Cur = 4 * uint64(numHandles)
		if err := syscall.Setrlimit(syscall.RLIMIT_NOFILE, &r); err != nil {
			t.Fatal(err)
		}
	}
}