// Copyright 2011 The Go Authors.  All rights reserved.

// Use of this source code is governed by a BSD-style

// license that can be found in the LICENSE file.

package xmpp

import (

	"bytes"

	"testing"

	"xml"

)

func assertEquals(t *testing.T, expected, observed string) {

	if expected != observed {

		t.Errorf("Expected:\n%s\nObserved:\n%s\n", expected,

			observed)

	}

}

func TestJid(t *testing.T) {

	str := "user@domain/res"

	jid := &JID{}

	if !jid.Set(str) {

		t.Errorf("Set(%s) failed\n", str)

	}

	assertEquals(t, "user", jid.Node)

	assertEquals(t, "domain", jid.Domain)

	assertEquals(t, "res", jid.Resource)

	assertEquals(t, str, jid.String())

	str = "domain.tld"

	if !jid.Set(str) {

		t.Errorf("Set(%s) failed\n", str)

	}

	if jid.Node != "" {

		t.Errorf("Node: %v\n", jid.Node)

	}

	assertEquals(t, "domain.tld", jid.Domain)

	if jid.Resource != "" {

		t.Errorf("Resource: %v\n", jid.Resource)

	}

	assertEquals(t, str, jid.String())

}

func assertMarshal(t *testing.T, expected string, marshal interface{}) {

	buf := bytes.NewBuffer(nil)

	xml.Marshal(buf, marshal)

	observed := string(buf.Bytes())

	assertEquals(t, expected, observed)

}

func TestStreamMarshal(t *testing.T) {

	s := &stream{To: "bob"}

	exp := `<stream:stream xmlns="jabber:client"` +

		` xmlns:stream="` + nsStream + `" to="bob">`

	assertMarshal(t, exp, s)

	s = &stream{To: "bob", From: "alice", Id: "#3", Version: "5.3"}

	exp = `<stream:stream xmlns="jabber:client"` +

		` xmlns:stream="` + nsStream + `" to="bob" from="alice"` +

		` id="#3" version="5.3">`

	assertMarshal(t, exp, s)

	s = &stream{Lang: "en_US"}

	exp = `<stream:stream xmlns="jabber:client"` +

		` xmlns:stream="` + nsStream + `" xml:lang="en_US">`

	assertMarshal(t, exp, s)

}

func TestStreamErrorMarshal(t *testing.T) {

	name := xml.Name{Space: nsStreams, Local: "ack"}

	e := &StreamError{Any: Generic{XMLName: name}}

	exp := `<stream:error><ack xmlns="` + nsStreams +

		`"></ack></stream:error>`;

	assertMarshal(t, exp, e)

	txt := errText{Lang: "pt", Text: "things happen"}

	e = &StreamError{Any: Generic{XMLName: name}, Text: &txt}

	exp = `<stream:error><ack xmlns="` + nsStreams +

		`"></ack><text xmlns="` + nsStreams +

		`" xml:lang="pt">things happen</text></stream:error>`

	assertMarshal(t, exp, e)

}

func TestIqMarshal(t *testing.T) {

	iq := &Iq{Type: "set", Id: "3", Any: &Generic{XMLName:

			xml.Name{Space: nsBind, Local: "bind"}}}

	exp := `<iq id="3" type="set"><bind xmlns="` + nsBind +

		`"></bind></iq>`

	assertMarshal(t, exp, iq)

}

func TestParseStanza(t *testing.T) {

	str := `<iq to="alice" from="bob" id="1" type="A"` +

		` xml:lang="en"><foo>text</foo></iq>`

	st, err := ParseStanza(str)

	if err != nil {

		t.Fatalf("iq: %v", err)

	}

	assertEquals(t, "iq", st.XName())

	assertEquals(t, "alice", st.XTo())

	assertEquals(t, "bob", st.XFrom())

	assertEquals(t, "1", st.XId())

	assertEquals(t, "A", st.XType())

	assertEquals(t, "en", st.XLang())

	if st.XError() != nil {

		t.Errorf("iq: error %v", st.XError())

	}

	if st.XChild() == nil {

		t.Errorf("iq: nil child")

	}

	assertEquals(t, "foo", st.XChild().XMLName.Local)

	assertEquals(t, "text", st.XChild().Chardata)

	str = `<message to="alice" from="bob"/>`

	st, err = ParseStanza(str)

	if err != nil {

		t.Fatalf("message: %v", err)

	}

	assertEquals(t, "message", st.XName())

	assertEquals(t, "alice", st.XTo())

	assertEquals(t, "bob", st.XFrom())

	assertEquals(t, "", st.XId())

	assertEquals(t, "", st.XLang())

	if st.XError() != nil {

		t.Errorf("message: error %v", st.XError())

	}

	if st.XChild() != nil {

		t.Errorf("message: child %v", st.XChild())

	}

	str = `<presence/>`

	st, err = ParseStanza(str)

	if err != nil {

		t.Fatalf("presence: %v", err)

	}

	assertEquals(t, "presence", st.XName())

}