=========
MonthYear
=========

All necessary components are set up in the testclass to make sure that
we test the real configuration. Let's test the Widget:

  >>> import datetime
  >>> import z3c.form
  >>> import zope.schema
  >>> from collective.z3cform.datetimewidget import MonthYearFieldWidget

  >>> request = self.testrequest()
  >>> field = zope.schema.Date(default=datetime.date(2007, 4, 1))
  >>> widget = MonthYearFieldWidget(field, request)
  >>> widget.id = 'foo'
  >>> widget.name = 'bar'
  >>> widget.update()
  >>> widget.extract() is z3c.form.interfaces.NOVALUE
  True


INPUT_MODE
----------

  >>> print widget.render()
  <input type="hidden" id="foo-day" name="bar-day"
         class="monthyear-widget required date-field" size="2"
         maxlength="2" value="1" />
  <select id="foo-month" name="bar-month"
          class="monthyear-widget required date-field">
      <option value="1">January</option>
      <option value="2">February</option>
      <option value="3">March</option>
      <option value="4" selected="selected">April</option>
      <option value="5">May</option>
      <option value="6">June</option>
      <option value="7">July</option>
      <option value="8">August</option>
      <option value="9">September</option>
      <option value="10">October</option>
      <option value="11">November</option>
      <option value="12">December</option>
  </select> /
  <input type="text" id="foo-year" name="bar-year"
         class="monthyear-widget required date-field" alt=""
         accesskey="" size="4" maxlength="4" value="2007" />
  <input name="bar-empty-marker" type="hidden" value="1" />


  >>> widget.request = self.testrequest(
  ...     form={'bar-day': '1',
  ...           'bar-month': '4',
  ...           'bar-year': '2007',
  ...           'bar-empty-marker': '1',
  ...           }
  ...     )
  >>> widget.extract()
  ('2007', '4', '1')


DISPLAY_MODE
------------

  >>> widget.mode = z3c.form.interfaces.DISPLAY_MODE
  >>> print widget.render()
  <span id="foo" class="monthyear-widget required date-field">4/1/07</span>


HIDDEN_MODE
-----------

  >>> widget.mode = z3c.form.interfaces.HIDDEN_MODE
  >>> print widget.render()
  <input type="hidden" id="foo" name="bar"
           class="hidden-widget" value="4/1/07" />
  >>> widget.request = self.testrequest(
  ...     form={'bar': '4/1/07'}
  ...     )
  >>> widget.extract()
  ('2007', '4', '1')