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// Copyright 2018 The gVisor Authors.
//
// 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.
package p9
import (
"testing"
"github.com/u-root/uio/ulog/ulogtest"
"google.golang.org/grpc/test/bufconn"
)
// TestVersion tests the version negotiation.
func TestVersion(t *testing.T) {
// First, create a new server and connection.
l := bufconn.Listen(int(DefaultMessageSize))
// Create a new server and client.
s := NewServer(nil, WithServerLogger(ulogtest.Logger{TB: t}))
go s.Serve(l)
client, err := l.Dial()
if err != nil {
t.Fatalf("got %v, expected nil", err)
}
// NewClient does a Tversion exchange, so this is our test for success.
c, err := NewClient(client,
WithMessageSize(1024*1024 /* 1M message size */),
WithClientLogger(ulogtest.Logger{TB: t}),
)
if err != nil {
t.Fatalf("got %v, expected nil", err)
}
want := rversion{
Version: "unknown",
MSize: 0,
}
// Check a bogus version string.
var r rversion
if err := c.sendRecv(&tversion{Version: "notokay", MSize: 1024 * 1024}, &r); err != nil {
t.Errorf("err %v", err)
}
if r != want {
t.Errorf("got %v, want %v", r, want)
}
// Check a bogus version number.
if err := c.sendRecv(&tversion{Version: "9P1000.L", MSize: 1024 * 1024}, &r); err != nil {
t.Errorf("err %v", err)
}
if r != want {
t.Errorf("got %v, want %v", r, want)
}
// Check an invalid MSize.
if err := c.sendRecv(&tversion{Version: versionString(version9P2000L, highestSupportedVersion), MSize: 0}, &r); err != nil {
t.Errorf("err %v", err)
}
if r != want {
t.Errorf("got %v, want %v", r, want)
}
want = rversion{
Version: versionString(version9P2000L, highestSupportedVersion),
MSize: 1024 * 1024,
}
// Check a too high version number.
if err := c.sendRecv(&tversion{Version: versionString(version9P2000L, highestSupportedVersion+1), MSize: 1024 * 1024}, &r); err != nil {
t.Errorf("err %v", err)
}
if r != want {
t.Errorf("got %v, want %v", r, want)
}
}
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