cpython/Lib/idlelib/idle_test/mock_idle.py

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'''Mock classes that imitate idlelib modules or classes.
Attributes and methods will be added as needed for tests.
'''
from idlelib.idle_test.mock_tk import Text
class Func:
'''Record call, capture args, return/raise result set by test.
When mock function is called, set or use attributes:
self.called - increment call number even if no args, kwds passed.
self.args - capture positional arguments.
self.kwds - capture keyword arguments.
self.result - return or raise value set in __init__.
self.return_self - return self instead, to mock query class return.
Most common use will probably be to mock instance methods.
Given class instance, can set and delete as instance attribute.
Mock_tk.Var and Mbox_func are special variants of this.
'''
def __init__(self, result=None, return_self=False):
self.called = 0
self.result = result
self.return_self = return_self
self.args = None
self.kwds = None
def __call__(self, *args, **kwds):
self.called += 1
self.args = args
self.kwds = kwds
if isinstance(self.result, BaseException):
raise self.result
elif self.return_self:
return self
else:
return self.result
class Editor:
'''Minimally imitate editor.EditorWindow class.
'''
def __init__(self, flist=None, filename=None, key=None, root=None,
text=None): # Allow real Text with mock Editor.
self.text = text or Text()
self.undo = UndoDelegator()
def get_selection_indices(self):
first = self.text.index('1.0')
last = self.text.index('end')
return first, last
class UndoDelegator:
'''Minimally imitate undo.UndoDelegator class.
'''
# A real undo block is only needed for user interaction.
def undo_block_start(*args):
pass
def undo_block_stop(*args):
pass