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package dbus
import (
"bytes"
"io"
. "launchpad.net/gocheck"
)
var testMessage = []byte{
'l', // Byte order
1, // Message type
0, // Flags
1, // Protocol
8, 0, 0, 0, // Body length
1, 0, 0, 0, // Serial
127, 0, 0, 0, // Header fields array length
1, 1, 'o', 0, // Path, type OBJECT_PATH
21, 0, 0, 0, '/', 'o', 'r', 'g', '/', 'f', 'r', 'e', 'e', 'd', 'e', 's', 'k', 't', 'o', 'p', '/', 'D', 'B', 'u', 's', 0,
0, 0,
2, 1, 's', 0, // Interface, type STRING
20, 0, 0, 0, 'o', 'r', 'g', '.', 'f', 'r', 'e', 'e', 'd', 'e', 's', 'k', 't', 'o', 'p', '.', 'D', 'B', 'u', 's', 0,
0, 0, 0,
3, 1, 's', 0, // Member, type STRING
12, 0, 0, 0, 'N', 'a', 'm', 'e', 'H', 'a', 's', 'O', 'w', 'n', 'e', 'r', 0,
0, 0, 0,
6, 1, 's', 0, // Destination, type STRING
20, 0, 0, 0, 'o', 'r', 'g', '.', 'f', 'r', 'e', 'e', 'd', 'e', 's', 'k', 't', 'o', 'p', '.', 'D', 'B', 'u', 's', 0,
0, 0, 0,
8, 1, 'g', 0, // Signature, type SIGNATURE
1, 's', 0,
0,
// Message body
3, 0, 0, 0,
'x', 'y', 'z', 0}
func (s *S) TestReadMessage(c *C) {
r := bytes.NewReader(testMessage)
msg, err := readMessage(r)
if nil != err {
c.Error(err)
}
c.Check(msg.Type, Equals, TypeMethodCall)
c.Check(msg.Path, Equals, ObjectPath("/org/freedesktop/DBus"))
c.Check(msg.Dest, Equals, "org.freedesktop.DBus")
c.Check(msg.Interface, Equals, "org.freedesktop.DBus")
c.Check(msg.Member, Equals, "NameHasOwner")
c.Check(msg.sig, Equals, Signature("s"))
var arg string
if err := msg.Args(&arg); err != nil {
c.Error(err)
}
c.Check(arg, Equals, "xyz")
// Try reading a second message from the reader
msg, err = readMessage(r)
if err == nil {
c.Error("Should not have been able to read a second message.")
} else if err != io.EOF {
c.Error(err)
}
}
func (s *S) TestWriteMessage(c *C) {
msg := newMessage()
msg.Type = TypeMethodCall
msg.Flags = MessageFlag(0)
msg.serial = 1
msg.Path = "/org/freedesktop/DBus"
msg.Dest = "org.freedesktop.DBus"
msg.Interface = "org.freedesktop.DBus"
msg.Member = "NameHasOwner"
if err := msg.AppendArgs("xyz"); err != nil {
c.Error(err)
}
buff := new(bytes.Buffer)
n, err := msg.WriteTo(buff)
c.Check(err, Equals, nil)
c.Check(n, Equals, int64(len(testMessage)))
c.Check(buff.Bytes(), DeepEquals, testMessage)
}
func (s *S) TestNewMethodCallMessage(c *C) {
msg := NewMethodCallMessage("com.destination", "/path", "com.interface", "method")
c.Check(msg.Type, Equals, TypeMethodCall)
c.Check(msg.Dest, Equals, "com.destination")
c.Check(msg.Path, Equals, ObjectPath("/path"))
c.Check(msg.Interface, Equals, "com.interface")
c.Check(msg.Member, Equals, "method")
// No signature or data
c.Check(msg.sig, Equals, Signature(""))
c.Check(msg.body, DeepEquals, []byte{})
}
func (s *S) TestNewMethodReturnMessage(c *C) {
call := NewMethodCallMessage("com.destination", "/path", "com.interface", "method")
call.serial = 42
call.Sender = ":1.2"
reply := NewMethodReturnMessage(call)
c.Check(reply.Type, Equals, TypeMethodReturn)
c.Check(reply.Dest, Equals, ":1.2")
c.Check(reply.replySerial, Equals, uint32(42))
// No signature or data
c.Check(reply.sig, Equals, Signature(""))
c.Check(reply.body, DeepEquals, []byte{})
}
func (s *S) TestNewSignalMessage(c *C) {
msg := NewSignalMessage("/path", "com.interface", "signal")
c.Check(msg.Type, Equals, TypeSignal)
c.Check(msg.Dest, Equals, "")
c.Check(msg.Path, Equals, ObjectPath("/path"))
c.Check(msg.Interface, Equals, "com.interface")
c.Check(msg.Member, Equals, "signal")
// No signature or data
c.Check(msg.sig, Equals, Signature(""))
c.Check(msg.body, DeepEquals, []byte{})
}
func (s *S) TestNewErrorMessage(c *C) {
call := NewMethodCallMessage("com.destination", "/path", "com.interface", "method")
call.serial = 42
call.Sender = ":1.2"
reply := NewErrorMessage(call, "com.interface.Error", "message")
c.Check(reply.Type, Equals, TypeError)
c.Check(reply.Dest, Equals, ":1.2")
c.Check(reply.replySerial, Equals, uint32(42))
c.Check(reply.ErrorName, Equals, "com.interface.Error")
// No signature or data
c.Check(reply.sig, Equals, Signature("s"))
var errorMessage string
if err := reply.Args(&errorMessage); err != nil {
c.Error(err)
}
c.Check(errorMessage, Equals, "message")
}
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