105 lines
3.2 KiB
Go
105 lines
3.2 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 p9
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import (
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"syscall"
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"testing"
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"gvisor.dev/gvisor/pkg/unet"
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)
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// TestVersion tests the version negotiation.
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func TestVersion(t *testing.T) {
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// First, create a new server and connection.
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serverSocket, clientSocket, err := unet.SocketPair(false)
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if err != nil {
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t.Fatalf("socketpair got err %v expected nil", err)
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}
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defer clientSocket.Close()
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// Create a new server and client.
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s := NewServer(nil)
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go s.Handle(serverSocket)
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// NewClient does a Tversion exchange, so this is our test for success.
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c, err := NewClient(clientSocket, DefaultMessageSize, HighestVersionString())
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if err != nil {
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t.Fatalf("got %v, expected nil", err)
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}
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// Check a bogus version string.
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if err := c.sendRecv(&Tversion{Version: "notokay", MSize: DefaultMessageSize}, &Rversion{}); err != syscall.EINVAL {
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t.Errorf("got %v expected %v", err, syscall.EINVAL)
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}
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// Check a bogus version number.
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if err := c.sendRecv(&Tversion{Version: "9P1000.L", MSize: DefaultMessageSize}, &Rversion{}); err != syscall.EINVAL {
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t.Errorf("got %v expected %v", err, syscall.EINVAL)
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}
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// Check a too high version number.
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if err := c.sendRecv(&Tversion{Version: versionString(highestSupportedVersion + 1), MSize: DefaultMessageSize}, &Rversion{}); err != syscall.EAGAIN {
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t.Errorf("got %v expected %v", err, syscall.EAGAIN)
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}
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// Check an invalid MSize.
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if err := c.sendRecv(&Tversion{Version: versionString(highestSupportedVersion), MSize: 0}, &Rversion{}); err != syscall.EINVAL {
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t.Errorf("got %v expected %v", err, syscall.EINVAL)
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}
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}
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func benchmarkSendRecv(b *testing.B, fn func(c *Client) func(message, message) error) {
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// See above.
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serverSocket, clientSocket, err := unet.SocketPair(false)
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if err != nil {
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b.Fatalf("socketpair got err %v expected nil", err)
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}
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defer clientSocket.Close()
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// See above.
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s := NewServer(nil)
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go s.Handle(serverSocket)
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// See above.
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c, err := NewClient(clientSocket, DefaultMessageSize, HighestVersionString())
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if err != nil {
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b.Fatalf("got %v, expected nil", err)
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}
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// Initialize messages.
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sendRecv := fn(c)
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tversion := &Tversion{
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Version: versionString(highestSupportedVersion),
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MSize: DefaultMessageSize,
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}
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rversion := new(Rversion)
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// Run in a loop.
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for i := 0; i < b.N; i++ {
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if err := sendRecv(tversion, rversion); err != nil {
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b.Fatalf("got unexpected err: %v", err)
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}
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}
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}
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func BenchmarkSendRecvLegacy(b *testing.B) {
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benchmarkSendRecv(b, func(c *Client) func(message, message) error { return c.sendRecvLegacy })
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}
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func BenchmarkSendRecvChannel(b *testing.B) {
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benchmarkSendRecv(b, func(c *Client) func(message, message) error { return c.sendRecvChannel })
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}
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