# *-* coding: utf-8 *-*

#

# Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

# All rights reserved.

# This component and the accompanying materials are made available

# under the terms of "Eclipse Public License v1.0"

# which accompanies this distribution, and is available

# at the URL "http://www.eclipse.org/legal/epl-v10.html".

#

# Initial Contributors:

# Nokia Corporation - initial contribution.

#

# Contributors:

#

# Description: 

#

import sys, os

import unittest

import StringIO

from cone.public import utils, exceptions

ROOT_PATH = os.path.dirname(os.path.abspath(__file__))

class ElementTreeBackendTester(object):

    """

    Base tester class that contains all test cases.

    The actual test case classes derive from this and set the

    class attributes BACKEND_ID and LINE_NUMBERS.

    """

    DATA = u"""<?xml version="1.0" encoding="UTF-8"?>

            <root xmlns="http://www.test.com/xml/1">

                <!-- Comment -->

                <elem1 attr1="test" attr2="test 2"/>

                <elem2>カタカナ</elem2>

                <elem3>

                    <!-- Comment 2 -->

                    some text

                </elem3>

            </root>""".encode('utf-8')

    # ID of the ElementTree back-end to use in the tests

    BACKEND_ID = None

    # Whether to check if line numbers in elements are correct or None

    LINE_NUMBERS = False

    def setUp(self):

        self.orig_backend_id = utils.etree.get_backend_id()

        utils.etree.set_backend_id(self.BACKEND_ID)

    def tearDown(self):

        utils.etree.set_backend_id(self.orig_backend_id)

    def assert_lineno_equals(self, actual, expected):

        if self.LINE_NUMBERS:

            self.assertEquals(actual, expected)

        else:

            self.assertEquals(actual, None)

    def test_correct_parser_set(self):

        self.assertEquals(utils.etree.get_backend_id(), self.BACKEND_ID)

    def test_fromstring_successful(self):

        root = utils.etree.fromstring(self.DATA)

        self.assertEquals(root.tag, '{http://www.test.com/xml/1}root')

        children = [e for e in root]

        self.assertEquals(len(children), 3)

        self.assertEquals(children[0].tag, '{http://www.test.com/xml/1}elem1')

        self.assertEquals(children[1].tag, '{http://www.test.com/xml/1}elem2')

        self.assertEquals(children[2].tag, '{http://www.test.com/xml/1}elem3')

        self.assertEquals(children[1].text, u'カタカナ')

        self.assert_lineno_equals(utils.etree.get_lineno(root), 2)

        self.assert_lineno_equals(utils.etree.get_lineno(children[0]), 4)

        self.assert_lineno_equals(utils.etree.get_lineno(children[1]), 5)

        self.assert_lineno_equals(utils.etree.get_lineno(children[2]), 6)

    def test_tostring_ascii(self):

        root = utils.etree.fromstring(self.DATA)

        output = utils.etree.tostring(root)

    def test_tostring_utf_8(self):

        root = utils.etree.fromstring(self.DATA)

        output = utils.etree.tostring(root, 'UTF-8')

    def test_tostring_utf_16(self):

        root = utils.etree.fromstring(self.DATA)

        output = utils.etree.tostring(root, 'UTF-16')

    def test_fromstring_failed(self):

        data = """<?xml version="1.0" encoding="UTF-8"?>

            <root xmlns="http://www.test.com/xml/1">

                <elem1 attr1="test" attr2="test 2"/>

                <elem2>testing</elem3>

            </root>"""

        try:

            etree = utils.etree.fromstring(data)

            self.fail("XmlParseError not raised!")

        except exceptions.XmlParseError, e:

# ============================================================================

# Actual test cases

# ============================================================================

# NOTE:

# The test classes MUST inherit the two super-classes in the order

# (ElementTreeBackendTester, unittest.TestCase), or otherwise setUp() and

# tearDown() will not be overridden correctly

class TestElementTreeBackend(ElementTreeBackendTester, unittest.TestCase):

    BACKEND_ID = utils.etree.BACKEND_ELEMENT_TREE

    LINE_NUMBERS = True

class TestCElementTreeBackend(ElementTreeBackendTester, unittest.TestCase):

    BACKEND_ID = utils.etree.BACKEND_C_ELEMENT_TREE

    LINE_NUMBERS = False

class TestLxmlBackend(ElementTreeBackendTester, unittest.TestCase):

    BACKEND_ID = utils.etree.BACKEND_LXML

    LINE_NUMBERS = True

if __name__ == '__main__':

    unittest.main()