126 lines
3.5 KiB
Go
126 lines
3.5 KiB
Go
// Copyright 2018 The gVisor Authors.
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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 proc
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import (
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"testing"
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"gvisor.dev/gvisor/pkg/context"
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"gvisor.dev/gvisor/pkg/sentry/inet"
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"gvisor.dev/gvisor/pkg/usermem"
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)
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func TestQuerySendBufferSize(t *testing.T) {
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ctx := context.Background()
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s := inet.NewTestStack()
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s.TCPSendBufSize = inet.TCPBufferSize{100, 200, 300}
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tmi := &tcpMemInode{s: s, dir: tcpWMem}
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tmf := &tcpMemFile{tcpMemInode: tmi}
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buf := make([]byte, 100)
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dst := usermem.BytesIOSequence(buf)
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n, err := tmf.Read(ctx, nil, dst, 0)
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if err != nil {
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t.Fatalf("Read failed: %v", err)
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}
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if got, want := string(buf[:n]), "100\t200\t300\n"; got != want {
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t.Fatalf("Bad string: got %v, want %v", got, want)
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}
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}
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func TestQueryRecvBufferSize(t *testing.T) {
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ctx := context.Background()
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s := inet.NewTestStack()
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s.TCPRecvBufSize = inet.TCPBufferSize{100, 200, 300}
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tmi := &tcpMemInode{s: s, dir: tcpRMem}
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tmf := &tcpMemFile{tcpMemInode: tmi}
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buf := make([]byte, 100)
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dst := usermem.BytesIOSequence(buf)
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n, err := tmf.Read(ctx, nil, dst, 0)
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if err != nil {
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t.Fatalf("Read failed: %v", err)
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}
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if got, want := string(buf[:n]), "100\t200\t300\n"; got != want {
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t.Fatalf("Bad string: got %v, want %v", got, want)
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}
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}
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var cases = []struct {
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str string
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initial inet.TCPBufferSize
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final inet.TCPBufferSize
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}{
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{
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str: "",
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initial: inet.TCPBufferSize{1, 2, 3},
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final: inet.TCPBufferSize{1, 2, 3},
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},
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{
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str: "100\n",
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initial: inet.TCPBufferSize{1, 100, 200},
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final: inet.TCPBufferSize{100, 100, 200},
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},
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{
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str: "100 200 300\n",
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initial: inet.TCPBufferSize{1, 2, 3},
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final: inet.TCPBufferSize{100, 200, 300},
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},
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}
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func TestConfigureSendBufferSize(t *testing.T) {
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ctx := context.Background()
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s := inet.NewTestStack()
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for _, c := range cases {
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s.TCPSendBufSize = c.initial
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tmi := &tcpMemInode{s: s, dir: tcpWMem}
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tmf := &tcpMemFile{tcpMemInode: tmi}
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// Write the values.
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src := usermem.BytesIOSequence([]byte(c.str))
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if n, err := tmf.Write(ctx, nil, src, 0); n != int64(len(c.str)) || err != nil {
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t.Errorf("Write, case = %q: got (%d, %v), wanted (%d, nil)", c.str, n, err, len(c.str))
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}
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// Read the values from the stack and check them.
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if s.TCPSendBufSize != c.final {
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t.Errorf("TCPSendBufferSize, case = %q: got %v, wanted %v", c.str, s.TCPSendBufSize, c.final)
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}
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}
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}
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func TestConfigureRecvBufferSize(t *testing.T) {
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ctx := context.Background()
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s := inet.NewTestStack()
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for _, c := range cases {
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s.TCPRecvBufSize = c.initial
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tmi := &tcpMemInode{s: s, dir: tcpRMem}
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tmf := &tcpMemFile{tcpMemInode: tmi}
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// Write the values.
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src := usermem.BytesIOSequence([]byte(c.str))
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if n, err := tmf.Write(ctx, nil, src, 0); n != int64(len(c.str)) || err != nil {
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t.Errorf("Write, case = %q: got (%d, %v), wanted (%d, nil)", c.str, n, err, len(c.str))
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}
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// Read the values from the stack and check them.
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if s.TCPRecvBufSize != c.final {
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t.Errorf("TCPRecvBufferSize, case = %q: got %v, wanted %v", c.str, s.TCPRecvBufSize, c.final)
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}
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}
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}
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