func (*suite) TestWriteMessageLogsRequests(c *C) {
codec := jsoncodec.New(&testConn{})
h := rpc.Header{
RequestId: 1,
Type: "foo",
Id: "id",
Request: "frob",
}
// Check that logging is off by default
err := codec.WriteMessage(&h, value{X: "param"})
c.Assert(err, IsNil)
c.Assert(c.GetTestLog(), Matches, "")
// Check that we see a log message when we switch logging on.
codec.SetLogging(true)
err = codec.WriteMessage(&h, value{X: "param"})
c.Assert(err, IsNil)
msg := `{"RequestId":1,"Type":"foo","Id":"id","Request":"frob","Params":{"X":"param"}}`
c.Assert(c.GetTestLog(), Matches, `.*DEBUG juju rpc/jsoncodec: -> `+regexp.QuoteMeta(msg)+`\n`)
// Check that we can switch it off again
codec.SetLogging(false)
err = codec.WriteMessage(&h, value{X: "param"})
c.Assert(err, IsNil)
c.Assert(c.GetTestLog(), Matches, `.*DEBUG juju rpc/jsoncodec: -> `+regexp.QuoteMeta(msg)+`\n`)
}
func (*suite) TestWrite(c *C) {
for i, test := range writeTests {
c.Logf("test %d", i)
var conn testConn
codec := jsoncodec.New(&conn)
err := codec.WriteMessage(test.hdr, test.body)
c.Assert(err, IsNil)
c.Assert(conn.writeMsgs, HasLen, 1)
assertJSONEqual(c, conn.writeMsgs[0], test.expect)
}
}
func (*suite) TestErrorAfterClose(c *C) {
conn := &testConn{
err: errors.New("some error"),
}
codec := jsoncodec.New(conn)
var hdr rpc.Header
err := codec.ReadHeader(&hdr)
c.Assert(err, ErrorMatches, "error receiving message: some error")
err = codec.Close()
c.Assert(err, IsNil)
c.Assert(conn.closed, Equals, true)
err = codec.ReadHeader(&hdr)
c.Assert(err, Equals, io.EOF)
}
func (*suite) TestConcurrentSetLoggingAndRead(c *C) {
// If log messages are not set atomically, this
// test will fail when run under the race detector.
msg := `{"RequestId":1,"Type": "foo","Id": "id","Request":"frob","Params":{"X":"param"}}`
codec := jsoncodec.New(&testConn{
readMsgs: []string{msg, msg, msg},
})
done := make(chan struct{})
go func() {
codec.SetLogging(true)
done <- struct{}{}
}()
var h rpc.Header
err := codec.ReadHeader(&h)
c.Assert(err, IsNil)
<-done
}
func (*suite) TestConcurrentSetLoggingAndWrite(c *C) {
// If log messages are not set atomically, this
// test will fail when run under the race detector.
codec := jsoncodec.New(&testConn{})
done := make(chan struct{})
go func() {
codec.SetLogging(true)
done <- struct{}{}
}()
h := rpc.Header{
RequestId: 1,
Type: "foo",
Id: "id",
Request: "frob",
}
err := codec.WriteMessage(&h, value{X: "param"})
c.Assert(err, IsNil)
<-done
}
func (*suite) TestRead(c *C) {
for i, test := range readTests {
c.Logf("test %d", i)
codec := jsoncodec.New(&testConn{
readMsgs: []string{test.msg},
})
var hdr rpc.Header
err := codec.ReadHeader(&hdr)
c.Assert(err, IsNil)
c.Assert(hdr, DeepEquals, test.expectHdr)
c.Assert(hdr.IsRequest(), Equals, test.expectHdr.IsRequest())
body := reflect.New(reflect.ValueOf(test.expectBody).Type().Elem()).Interface()
err = codec.ReadBody(body, test.expectHdr.IsRequest())
c.Assert(err, IsNil)
c.Assert(body, DeepEquals, test.expectBody)
err = codec.ReadHeader(&hdr)
c.Assert(err, Equals, io.EOF)
}
}
func (*suite) TestReadHeaderLogsRequests(c *C) {
msg := `{"RequestId":1,"Type": "foo","Id": "id","Request":"frob","Params":{"X":"param"}}`
codec := jsoncodec.New(&testConn{
readMsgs: []string{msg, msg, msg},
})
// Check that logging is off by default
var h rpc.Header
err := codec.ReadHeader(&h)
c.Assert(err, IsNil)
c.Assert(c.GetTestLog(), Matches, "")
// Check that we see a log message when we switch logging on.
codec.SetLogging(true)
err = codec.ReadHeader(&h)
c.Assert(err, IsNil)
c.Assert(c.GetTestLog(), Matches, ".*DEBUG juju rpc/jsoncodec: <- "+regexp.QuoteMeta(msg)+`\n`)
// Check that we can switch it off again
codec.SetLogging(false)
err = codec.ReadHeader(&h)
c.Assert(err, IsNil)
c.Assert(c.GetTestLog(), Matches, ".*DEBUG juju rpc/jsoncodec: <- "+regexp.QuoteMeta(msg)+`\n`)
}