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- "Test tree. coverage 56%."
- from idlelib import tree
- import unittest
- from test.support import requires
- requires('gui')
- from tkinter import Tk, EventType, SCROLL
- class TreeTest(unittest.TestCase):
- @classmethod
- def setUpClass(cls):
- cls.root = Tk()
- cls.root.withdraw()
- @classmethod
- def tearDownClass(cls):
- cls.root.destroy()
- del cls.root
- def test_init(self):
- # Start with code slightly adapted from htest.
- sc = tree.ScrolledCanvas(
- self.root, bg="white", highlightthickness=0, takefocus=1)
- sc.frame.pack(expand=1, fill="both", side='left')
- item = tree.FileTreeItem(tree.ICONDIR)
- node = tree.TreeNode(sc.canvas, None, item)
- node.expand()
- class TestScrollEvent(unittest.TestCase):
- def test_wheel_event(self):
- # Fake widget class containing `yview` only.
- class _Widget:
- def __init__(widget, *expected):
- widget.expected = expected
- def yview(widget, *args):
- self.assertTupleEqual(widget.expected, args)
- # Fake event class
- class _Event:
- pass
- # (type, delta, num, amount)
- tests = ((EventType.MouseWheel, 120, -1, -5),
- (EventType.MouseWheel, -120, -1, 5),
- (EventType.ButtonPress, -1, 4, -5),
- (EventType.ButtonPress, -1, 5, 5))
- event = _Event()
- for ty, delta, num, amount in tests:
- event.type = ty
- event.delta = delta
- event.num = num
- res = tree.wheel_event(event, _Widget(SCROLL, amount, "units"))
- self.assertEqual(res, "break")
- if __name__ == '__main__':
- unittest.main(verbosity=2)
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