func (root *Root) testCall(c *C, conn *rpc.Conn, narg, nret int, retErr, testErr bool) {
root.calls = nil
root.returnErr = testErr
e := ""
if retErr {
e = "e"
}
method := fmt.Sprintf("Call%dr%d%s", narg, nret, e)
c.Logf("test call %s", method)
var r stringVal
err := conn.Call("SimpleMethods", "a99", method, stringVal{"arg"}, &r)
root.mu.Lock()
defer root.mu.Unlock()
expectCall := callInfo{
rcvr: root.simple["a99"],
method: method,
}
if narg > 0 {
expectCall.arg = stringVal{"arg"}
}
c.Assert(root.calls, HasLen, 1)
c.Assert(*root.calls[0], Equals, expectCall)
switch {
case retErr && testErr:
c.Assert(err, DeepEquals, &rpc.RequestError{
Message: fmt.Sprintf("error calling %s", method),
})
c.Assert(r, Equals, stringVal{})
case nret > 0:
c.Assert(r, Equals, stringVal{method + " ret"})
}
}
func closeClient(c *C, client *rpc.Conn, srvDone <-chan error) {
client.Close()
err := chanReadError(c, srvDone, "server done")
c.Assert(err, IsNil)
}