##############################################################################
#
# Copyright (c) 2001, 2002 Zope Corporation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
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# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
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"""Checkbox Widget tests

$Id: test_checkboxwidget.py 27082 2004-08-12 20:03:58Z srichter $
"""
import unittest, doctest

from zope.app.form.interfaces import IInputWidget
from zope.app.form.browser import CheckBoxWidget
from zope.publisher.browser import TestRequest
from zope.schema import Bool
from zope.interface.verify import verifyClass

from zope.app.form.interfaces import MissingInputError
from zope.app.form.browser.tests.test_browserwidget import SimpleInputWidgetTest


class CheckBoxWidgetTest(SimpleInputWidgetTest):
    """Documents and tests thec checkbox widget.

        >>> verifyClass(IInputWidget, CheckBoxWidget)
        True

    The checkbox widget works with Bool fields:

        >>> field = Bool(__name__='foo', title=u'on')
        >>> request = TestRequest()
        >>> widget = CheckBoxWidget(field, request)

    hasInput returns True when the request contains the field.<name>.used
    value:

        >>> 'field.foo.used' in request.form
        False
        >>> widget.hasInput()
        False
        >>> request.form['field.foo.used'] = ''
        >>> widget.hasInput()
        True

    getInputValue returns True when field.<name> equals (and only equals) 'on':

        >>> 'field.foo' in request.form
        False
        >>> widget.getInputValue()
        False
        >>> request.form['field.foo'] = 'true'
        >>> widget.getInputValue()
        False
        >>> request.form['field.foo'] = 'on'
        >>> widget.getInputValue()
        True

    Below is HTML output of rendered checkbox widgets. We will first define
    a helper method condense the HTML output for display in this test:

        >>> def normalize(s):
        ...   return '\\n  '.join(s.split())

    Default widget rendering:

        >>> print normalize( widget() )
        <input
          class="hiddenType"
          id="field.foo.used"
          name="field.foo.used"
          type="hidden"
          value=""
          />
          <input
          class="checkboxType"
          checked="checked"
          id="field.foo"
          name="field.foo"
          type="checkbox"
          />

    Hidden rendering:

        >>> print normalize( widget.hidden() )
        <input
          class="hiddenType"
          id="field.foo"
          name="field.foo"
          type="hidden"
          value="on"
          />

    Calling setRenderedValue will change what gets output:

        >>> widget.setRenderedValue(False)
        >>> print normalize( widget() )
        <input
          class="hiddenType"
          id="field.foo.used"
          name="field.foo.used"
          type="hidden"
          value=""
          />
          <input
          class="checkboxType"
          id="field.foo"
          name="field.foo"
          type="checkbox"
          />

    The checkbox widget does not support None values, so a Bool required
    constraint will always be met with checkbox input:

        >>> field.required = True
        >>> widget.validate()
    """

    _FieldFactory = Bool
    _WidgetFactory = CheckBoxWidget

    def testProperties(self):
        self.assertEqual(self._widget.tag, 'input')
        self.assertEqual(self._widget.type, 'checkbox')
        self.assertEqual(self._widget.cssClass, '')
        self.assertEqual(self._widget.extra, '')
        self.assertEqual(self._widget.default, 0)

    def testRender(self):
        value = 1
        self._widget.setRenderedValue(value)
        check_list = ('type="checkbox"', 'id="field.foo"',
                      'name="field.foo"', 'checked="checked"')
        self.verifyResult(self._widget(), check_list)
        value = 0
        self._widget.setRenderedValue(value)
        check_list = check_list[:-1]
        self.verifyResult(self._widget(), check_list)
        check_list = ('type="hidden"',) + check_list[1:-1]
        self.verifyResult(self._widget.hidden(), check_list)
        check_list = ('style="color: red"',) + check_list
        self._widget.extra = 'style="color: red"'
        self.verifyResult(self._widget.hidden(), check_list)

    def test_getInputValue(self):
        self._widget.request.form['field.foo'] = 'on'
        self.assertEqual(self._widget.getInputValue(), True)
        self._widget.request.form['field.foo'] = 'positive'
        self.assertEqual(self._widget.getInputValue(), False)
        del self._widget.request.form['field.foo']
        self._widget.request.form['field.foo.used'] = ''
        self.assertEquals(self._widget.getInputValue(), False)
        del self._widget.request.form['field.foo.used']
        self.assertRaises(MissingInputError, self._widget.getInputValue)


def test_suite():
    return unittest.TestSuite((
        unittest.makeSuite(CheckBoxWidgetTest),
        doctest.DocTestSuite(),
        ))

if __name__=='__main__':
    unittest.main(defaultTest='test_suite')
