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import unittest
import pytest
from qtpy import QtGui, QtWidgets
from qtconsole.kill_ring import KillRing, QtKillRing
from . import no_display
@pytest.mark.skipif(no_display, reason="Doesn't work without a display")
class TestKillRing(unittest.TestCase):
@classmethod
def setUpClass(cls):
""" Create the application for the test case.
"""
cls._app = QtWidgets.QApplication.instance()
if cls._app is None:
cls._app = QtWidgets.QApplication([])
cls._app.setQuitOnLastWindowClosed(False)
@classmethod
def tearDownClass(cls):
""" Exit the application.
"""
QtWidgets.QApplication.quit()
def test_generic(self):
""" Does the generic kill ring work?
"""
ring = KillRing()
self.assertTrue(ring.yank() is None)
self.assertTrue(ring.rotate() is None)
ring.kill('foo')
self.assertEqual(ring.yank(), 'foo')
self.assertTrue(ring.rotate() is None)
self.assertEqual(ring.yank(), 'foo')
ring.kill('bar')
self.assertEqual(ring.yank(), 'bar')
self.assertEqual(ring.rotate(), 'foo')
ring.clear()
self.assertTrue(ring.yank() is None)
self.assertTrue(ring.rotate() is None)
def test_qt_basic(self):
""" Does the Qt kill ring work?
"""
text_edit = QtWidgets.QPlainTextEdit()
ring = QtKillRing(text_edit)
ring.kill('foo')
ring.kill('bar')
ring.yank()
ring.rotate()
ring.yank()
self.assertEqual(text_edit.toPlainText(), 'foobar')
text_edit.clear()
ring.kill('baz')
ring.yank()
ring.rotate()
ring.rotate()
ring.rotate()
self.assertEqual(text_edit.toPlainText(), 'foo')
def test_qt_cursor(self):
""" Does the Qt kill ring maintain state with cursor movement?
"""
text_edit = QtWidgets.QPlainTextEdit()
ring = QtKillRing(text_edit)
ring.kill('foo')
ring.kill('bar')
ring.yank()
text_edit.moveCursor(QtGui.QTextCursor.Left)
ring.rotate()
self.assertEqual(text_edit.toPlainText(), 'bar')
if __name__ == '__main__':
import pytest
pytest.main()
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