# coding: utf8

"""

Tests for the Paged Media 3 parser

----------------------------------

:copyright: (c) 2012 by Simon Sapin.

:license: BSD, see LICENSE for more details.

"""

from __future__ import unicode_literals

import pytest

from tinycss.page3 import CSSPage3Parser

from .test_tokenizer import jsonify

from . import assert_errors

@pytest.mark.parametrize(('css', 'expected_selector',

'expected_specificity', 'expected_errors'), [

('@page {}', (None, None), (0, 0, 0), []),

('@page :first {}', (None, 'first'), (0, 1, 0), []),

('@page:left{}', (None, 'left'), (0, 0, 1), []),

('@page :right {}', (None, 'right'), (0, 0, 1), []),

('@page :last {}', None, None, ['invalid @page selector']),

('@page : first {}', None, None, ['invalid @page selector']),

('@page foo:first {}', ('foo', 'first'), (1, 1, 0), []),

('@page bar :left {}', ('bar', 'left'), (1, 0, 1), []),

(r'@page \26:right {}', ('&', 'right'), (1, 0, 1), []),

('@page foo {}', ('foo', None), (1, 0, 0), []),

(r'@page \26 {}', ('&', None), (1, 0, 0), []),

('@page foo fist {}', None, None, ['invalid @page selector']),

('@page foo, bar {}', None, None, ['invalid @page selector']),

('@page foo&first {}', None, None, ['invalid @page selector']),

])

def test_selectors(css, expected_selector, expected_specificity,

expected_errors):

stylesheet = CSSPage3Parser().parse_stylesheet(css)

assert_errors(stylesheet.errors, expected_errors)

if stylesheet.rules:

assert len(stylesheet.rules) == 1

rule = stylesheet.rules[0]

assert rule.at_keyword == '@page'

selector = rule.selector

assert rule.specificity == expected_specificity

else:

selector = None

assert selector == expected_selector

@pytest.mark.parametrize(('css', 'expected_declarations',

'expected_rules','expected_errors'), [

('@page {}', [], [], []),

('@page { foo: 4; bar: z }',

[('foo', [('INTEGER', 4)]), ('bar', [('IDENT', 'z')])], [], []),

('''@page { foo: 4;

@top-center { content: "Awesome Title" }

@bottom-left { content: counter(page) }

bar: z

}''',

[('foo', [('INTEGER', 4)]), ('bar', [('IDENT', 'z')])],

[('@top-center', [('content', [('STRING', 'Awesome Title')])]),

('@bottom-left', [('content', [

('FUNCTION', 'counter', [('IDENT', 'page')])])])],

[]),

('''@page { foo: 4;

@bottom-top { content: counter(page) }

bar: z

}''',

[('foo', [('INTEGER', 4)]), ('bar', [('IDENT', 'z')])],

[],

['unknown at-rule in @page context: @bottom-top']),

('@page{} @top-right{}', [], [], [

'@top-right rule not allowed in stylesheet']),

('@page{ @top-right 4 {} }', [], [], [

'unexpected INTEGER token in @top-right rule header']),

# Not much error recovery tests here. This should be covered in test_css21

])

def test_content(css, expected_declarations, expected_rules, expected_errors):

stylesheet = CSSPage3Parser().parse_stylesheet(css)

assert_errors(stylesheet.errors, expected_errors)

def declarations(rule):

return [(decl.name, list(jsonify(decl.value)))

for decl in rule.declarations]

assert len(stylesheet.rules) == 1

rule = stylesheet.rules[0]

assert rule.at_keyword == '@page'

assert declarations(rule) == expected_declarations

rules = [(margin_rule.at_keyword, declarations(margin_rule))

for margin_rule in rule.at_rules]

assert rules == expected_rules