Edit File: test_history.py
" Test history, coverage 100%." from idlelib.history import History import unittest from test.support import requires import tkinter as tk from tkinter import Text as tkText from idlelib.idle_test.mock_tk import Text as mkText from idlelib.config import idleConf line1 = 'a = 7' line2 = 'b = a' class StoreTest(unittest.TestCase): '''Tests History.__init__ and History.store with mock Text''' @classmethod def setUpClass(cls): cls.text = mkText() cls.history = History(cls.text) def tearDown(self): self.text.delete('1.0', 'end') self.history.history = [] def test_init(self): self.assertIs(self.history.text, self.text) self.assertEqual(self.history.history, []) self.assertIsNone(self.history.prefix) self.assertIsNone(self.history.pointer) self.assertEqual(self.history.cyclic, idleConf.GetOption("main", "History", "cyclic", 1, "bool")) def test_store_short(self): self.history.store('a') self.assertEqual(self.history.history, []) self.history.store(' a ') self.assertEqual(self.history.history, []) def test_store_dup(self): self.history.store(line1) self.assertEqual(self.history.history, [line1]) self.history.store(line2) self.assertEqual(self.history.history, [line1, line2]) self.history.store(line1) self.assertEqual(self.history.history, [line2, line1]) def test_store_reset(self): self.history.prefix = line1 self.history.pointer = 0 self.history.store(line2) self.assertIsNone(self.history.prefix) self.assertIsNone(self.history.pointer) class TextWrapper: def __init__(self, master): self.text = tkText(master=master) self._bell = False def __getattr__(self, name): return getattr(self.text, name) def bell(self): self._bell = True class FetchTest(unittest.TestCase): '''Test History.fetch with wrapped tk.Text. ''' @classmethod def setUpClass(cls): requires('gui') cls.root = tk.Tk() cls.root.withdraw() def setUp(self): self.text = text = TextWrapper(self.root) text.insert('1.0', ">>> ") text.mark_set('iomark', '1.4') text.mark_gravity('iomark', 'left') self.history = History(text) self.history.history = [line1, line2] @classmethod def tearDownClass(cls): cls.root.destroy() del cls.root def fetch_test(self, reverse, line, prefix, index, *, bell=False): # Perform one fetch as invoked by Alt-N or Alt-P # Test the result. The line test is the most important. # The last two are diagnostic of fetch internals. History = self.history History.fetch(reverse) Equal = self.assertEqual Equal(self.text.get('iomark', 'end-1c'), line) Equal(self.text._bell, bell) if bell: self.text._bell = False Equal(History.prefix, prefix) Equal(History.pointer, index) Equal(self.text.compare("insert", '==', "end-1c"), 1) def test_fetch_prev_cyclic(self): prefix = '' test = self.fetch_test test(True, line2, prefix, 1) test(True, line1, prefix, 0) test(True, prefix, None, None, bell=True) def test_fetch_next_cyclic(self): prefix = '' test = self.fetch_test test(False, line1, prefix, 0) test(False, line2, prefix, 1) test(False, prefix, None, None, bell=True) # Prefix 'a' tests skip line2, which starts with 'b' def test_fetch_prev_prefix(self): prefix = 'a' self.text.insert('iomark', prefix) self.fetch_test(True, line1, prefix, 0) self.fetch_test(True, prefix, None, None, bell=True) def test_fetch_next_prefix(self): prefix = 'a' self.text.insert('iomark', prefix) self.fetch_test(False, line1, prefix, 0) self.fetch_test(False, prefix, None, None, bell=True) def test_fetch_prev_noncyclic(self): prefix = '' self.history.cyclic = False test = self.fetch_test test(True, line2, prefix, 1) test(True, line1, prefix, 0) test(True, line1, prefix, 0, bell=True) def test_fetch_next_noncyclic(self): prefix = '' self.history.cyclic = False test = self.fetch_test test(False, prefix, None, None, bell=True) test(True, line2, prefix, 1) test(False, prefix, None, None, bell=True) test(False, prefix, None, None, bell=True) def test_fetch_cursor_move(self): # Move cursor after fetch self.history.fetch(reverse=True) # initialization self.text.mark_set('insert', 'iomark') self.fetch_test(True, line2, None, None, bell=True) def test_fetch_edit(self): # Edit after fetch self.history.fetch(reverse=True) # initialization self.text.delete('iomark', 'insert', ) self.text.insert('iomark', 'a =') self.fetch_test(True, line1, 'a =', 0) # prefix is reset def test_history_prev_next(self): # Minimally test functions bound to events self.history.history_prev('dummy event') self.assertEqual(self.history.pointer, 1) self.history.history_next('dummy event') self.assertEqual(self.history.pointer, None) if __name__ == '__main__': unittest.main(verbosity=2, exit=2)