"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)