64 lines
2.2 KiB
Python
64 lines
2.2 KiB
Python
"""Classes that replace tkinter gui objects used by an object being tested.
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A gui object is anything with a master or parent paramenter, which is typically
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required in spite of what the doc strings say.
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"""
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class Var:
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"Use for String/Int/BooleanVar: incomplete"
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def __init__(self, master=None, value=None, name=None):
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self.master = master
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self.value = value
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self.name = name
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def set(self, value):
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self.value = value
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def get(self):
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return self.value
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class Mbox_func:
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"""Generic mock for messagebox functions. All have same call signature.
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Mbox instantiates once for each function. Tester uses attributes.
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"""
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def __init__(self):
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self.result = None # The return for all show funcs
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def __call__(self, title, message, *args, **kwds):
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# Save all args for possible examination by tester
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self.title = title
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self.message = message
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self.args = args
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self.kwds = kwds
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return self.result # Set by tester for ask functions
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class Mbox:
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"""Mock for tkinter.messagebox with an Mbox_func for each function.
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This module was 'tkMessageBox' in 2.x; hence the 'import as' in 3.x.
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Example usage in test_module.py for testing functios in module.py:
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---
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from idlelib.idle_test.mock_tk import Mbox
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import module
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orig_mbox = module.tkMessageBox
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showerror = Mbox.showerror # example, for attribute access in test methods
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class Test(unittest.TestCase):
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@classmethod
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def setUpClass(cls):
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module.tkMessageBox = Mbox
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@classmethod
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def tearDownClass(cls):
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module.tkMessageBox = orig_mbox
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---
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When tkMessageBox functions are the only gui making calls in a method,
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this replacement makes the method gui-free and unit-testable.
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For 'ask' functions, set func.result return before calling method.
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"""
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askokcancel = Mbox_func() # True or False
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askquestion = Mbox_func() # 'yes' or 'no'
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askretrycancel = Mbox_func() # True or False
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askyesno = Mbox_func() # True or False
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askyesnocancel = Mbox_func() # True, False, or None
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showerror = Mbox_func() # None
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showinfo = Mbox_func() # None
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showwarning = Mbox_func() # None
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