def edges(selected_letters):
return [
{
'node': {
'id': base64('Letter:%s' % l.id),
'letter': l.letter
},
'cursor': base64('sc:%s' % l.id)
}
for l in [letters[i] for i in selected_letters]
]
def cursor_for(ltr):
l = letters[ltr]
return base64('sc:%s' % l.id)
def test_returns_no_elements_if_cursors_cross():
check('before: "{}" after: "{}"'.format(base64('sc:%s' % 2), base64('sc:%s' % 4)), '')
def test_returns_all_elements_if_cursors_are_on_the_outside():
check('before: "{}" after: "{}"'.format(base64('sc:%s' % 6), base64('sc:%s' % 0)), 'ABCDE')