2019-04-29 21:25:05 +00:00
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// Copyright 2018 The gVisor Authors.
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2018-04-27 17:37:02 +00:00
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package fd
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import (
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"math"
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"os"
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"syscall"
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"testing"
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)
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func TestSetNegOne(t *testing.T) {
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type entry struct {
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name string
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file *FD
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fn func() error
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}
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var tests []entry
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fd, err := syscall.Socket(syscall.AF_UNIX, syscall.SOCK_STREAM|syscall.SOCK_CLOEXEC, 0)
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if err != nil {
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t.Fatal("syscall.Socket:", err)
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}
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f1 := New(fd)
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tests = append(tests, entry{
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"Release",
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f1,
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func() error {
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return syscall.Close(f1.Release())
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},
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})
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fd, err = syscall.Socket(syscall.AF_UNIX, syscall.SOCK_STREAM|syscall.SOCK_CLOEXEC, 0)
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if err != nil {
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t.Fatal("syscall.Socket:", err)
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}
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f2 := New(fd)
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tests = append(tests, entry{
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"Close",
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f2,
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f2.Close,
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})
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for _, test := range tests {
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if err := test.fn(); err != nil {
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t.Errorf("%s: %v", test.name, err)
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continue
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}
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if fd := test.file.FD(); fd != -1 {
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t.Errorf("%s: got FD() = %d, want = -1", test.name, fd)
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}
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}
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}
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func TestStartsNegOne(t *testing.T) {
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type entry struct {
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name string
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file *FD
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}
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tests := []entry{
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{"-1", New(-1)},
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{"-2", New(-2)},
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{"MinInt32", New(math.MinInt32)},
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{"MinInt64", New(math.MinInt64)},
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}
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for _, test := range tests {
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if fd := test.file.FD(); fd != -1 {
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t.Errorf("%s: got FD() = %d, want = -1", test.name, fd)
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}
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}
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}
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func TestFileDotFile(t *testing.T) {
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fd, err := syscall.Socket(syscall.AF_UNIX, syscall.SOCK_STREAM|syscall.SOCK_CLOEXEC, 0)
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if err != nil {
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t.Fatal("syscall.Socket:", err)
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}
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f := New(fd)
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of, err := f.File()
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if err != nil {
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t.Fatalf("File got err %v want nil", err)
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}
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if ofd, nfd := int(of.Fd()), f.FD(); ofd == nfd || ofd == -1 {
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// Try not to double close the FD.
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f.Release()
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t.Fatalf("got %#v.File().Fd() = %d, want new FD", f, ofd)
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}
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f.Close()
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of.Close()
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}
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func TestFileDotFileError(t *testing.T) {
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f := &FD{ReadWriter{-2}}
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if of, err := f.File(); err == nil {
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t.Errorf("File %v got nil err want non-nil", of)
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of.Close()
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}
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}
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func TestNewFromFile(t *testing.T) {
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f, err := NewFromFile(os.Stdin)
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if err != nil {
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t.Fatalf("NewFromFile got err %v want nil", err)
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}
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if nfd, ofd := f.FD(), int(os.Stdin.Fd()); nfd == -1 || nfd == ofd {
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t.Errorf("got FD() = %d, want = new FD (old FD was %d)", nfd, ofd)
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}
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f.Close()
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}
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func TestNewFromFileError(t *testing.T) {
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f, err := NewFromFile(nil)
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if err == nil {
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t.Errorf("NewFromFile got %v with nil err want non-nil", f)
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f.Close()
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}
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}
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