==========================
A GSpreadsheet content type doctest
==========================

Import the class.

    >>> from quintagroup.gdocs.spreadsheet.content.gspreadsheet import GSpreadsheet

Create object

    >>> my_context = GSpreadsheet('id')

Testing set attributes of class GSpreadsheet

    >>> my_context.title = u"Some title"
    >>> my_context.description = u"Some description"
    >>> my_context.spreadsheet_id = u"Some spreadsheet id"
    >>> my_context.worksheet_id = u"Some worksheet id"
    >>> my_context.order_columns = ({'column_key': 'col1', 'column_title': 'Title 1'},)

    >>> my_context.title
    'Some title'
    >>> my_context.description
    'Some description'
    >>> my_context.spreadsheet_id
    'Some spreadsheet id'
    >>> my_context.worksheet_id
    'Some worksheet id'
    >>> len(my_context.order_columns)
    1
    >>> my_context.order_columns[0]['column_key']
    'col1'
    >>> my_context.order_columns[0]['column_title']
    'Title 1'

Testing all_keys_columns property method of class GSpreadsheet

    >>> my_context.all_keys_columns
    ['col1', 'col2', 'col3', 'col4', 'col5']

Testing getKeyColumnVocabulary method of class GSpreadsheet

    >>> kcv = my_context.getKeyColumnVocabulary()
    >>> len(kcv)
    5
    >>> kcv[0]
    'col1'
    >>> kcv[4]
    'col5'