route/vendor/google.golang.org/grpc/test/bufconn/bufconn_test.go

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2017-10-06 15:29:20 +00:00
/*
*
* Copyright 2017 gRPC 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 bufconn
import (
"fmt"
"io"
"net"
"reflect"
"testing"
"time"
)
func testRW(r io.Reader, w io.Writer) error {
for i := 0; i < 20; i++ {
d := make([]byte, i)
for j := 0; j < i; j++ {
d[j] = byte(i - j)
}
var rn int
var rerr error
b := make([]byte, i)
done := make(chan struct{})
go func() {
for rn < len(b) && rerr == nil {
var x int
x, rerr = r.Read(b[rn:])
rn += x
}
close(done)
}()
wn, werr := w.Write(d)
if wn != i || werr != nil {
return fmt.Errorf("%v: w.Write(%v) = %v, %v; want %v, nil", i, d, wn, werr, i)
}
select {
case <-done:
case <-time.After(500 * time.Millisecond):
return fmt.Errorf("%v: r.Read never returned", i)
}
if rn != i || rerr != nil {
return fmt.Errorf("%v: r.Read = %v, %v; want %v, nil", i, rn, rerr, i)
}
if !reflect.DeepEqual(b, d) {
return fmt.Errorf("%v: r.Read read %v; want %v", i, b, d)
}
}
return nil
}
func TestPipe(t *testing.T) {
p := newPipe(10)
if err := testRW(p, p); err != nil {
t.Fatalf(err.Error())
}
}
func TestPipeClose(t *testing.T) {
p := newPipe(10)
p.Close()
if _, err := p.Write(nil); err != io.ErrClosedPipe {
t.Fatalf("p.Write = _, %v; want _, %v", err, io.ErrClosedPipe)
}
if _, err := p.Read(nil); err != io.ErrClosedPipe {
t.Fatalf("p.Read = _, %v; want _, %v", err, io.ErrClosedPipe)
}
}
func TestConn(t *testing.T) {
p1, p2 := newPipe(10), newPipe(10)
c1, c2 := &conn{p1, p2}, &conn{p2, p1}
if err := testRW(c1, c2); err != nil {
t.Fatalf(err.Error())
}
if err := testRW(c2, c1); err != nil {
t.Fatalf(err.Error())
}
}
func TestListener(t *testing.T) {
l := Listen(7)
var s net.Conn
var serr error
done := make(chan struct{})
go func() {
s, serr = l.Accept()
close(done)
}()
c, cerr := l.Dial()
<-done
if cerr != nil || serr != nil {
t.Fatalf("cerr = %v, serr = %v; want nil, nil", cerr, serr)
}
if err := testRW(c, s); err != nil {
t.Fatalf(err.Error())
}
if err := testRW(s, c); err != nil {
t.Fatalf(err.Error())
}
}
func TestCloseWhileDialing(t *testing.T) {
l := Listen(7)
var c net.Conn
var err error
done := make(chan struct{})
go func() {
c, err = l.Dial()
close(done)
}()
l.Close()
<-done
if c != nil || err != errClosed {
t.Fatalf("c, err = %v, %v; want nil, %v", c, err, errClosed)
}
}
func TestCloseWhileAccepting(t *testing.T) {
l := Listen(7)
var c net.Conn
var err error
done := make(chan struct{})
go func() {
c, err = l.Accept()
close(done)
}()
l.Close()
<-done
if c != nil || err != errClosed {
t.Fatalf("c, err = %v, %v; want nil, %v", c, err, errClosed)
}
}