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@@ -1,80 +1,82 b'' | |||
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1 | 1 | # Standard library imports |
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2 | 2 | import unittest |
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3 | 3 | |
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4 | 4 | # System library imports |
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5 | 5 | from IPython.external.qt import QtCore, QtGui |
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6 | 6 | |
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7 | 7 | # Local imports |
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8 | 8 | from IPython.qt.console.console_widget import ConsoleWidget |
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9 | import IPython.testing.decorators as dec | |
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9 | 10 | |
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11 | setup = dec.skip_file_no_x11(__name__) | |
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10 | 12 | |
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11 | 13 | class TestConsoleWidget(unittest.TestCase): |
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12 | 14 | |
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13 | 15 | @classmethod |
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14 | 16 | def setUpClass(cls): |
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15 | 17 | """ Create the application for the test case. |
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16 | 18 | """ |
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17 | 19 | cls._app = QtGui.QApplication.instance() |
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18 | 20 | if cls._app is None: |
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19 | 21 | cls._app = QtGui.QApplication([]) |
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20 | 22 | cls._app.setQuitOnLastWindowClosed(False) |
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21 | 23 | |
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22 | 24 | @classmethod |
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23 | 25 | def tearDownClass(cls): |
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24 | 26 | """ Exit the application. |
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25 | 27 | """ |
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26 | 28 | QtGui.QApplication.quit() |
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27 | 29 | |
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28 | 30 | def test_special_characters(self): |
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29 | 31 | """ Are special characters displayed correctly? |
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30 | 32 | """ |
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31 | 33 | w = ConsoleWidget() |
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32 | 34 | cursor = w._get_prompt_cursor() |
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33 | 35 | |
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34 | 36 | test_inputs = ['xyz\b\b=\n', 'foo\b\nbar\n', 'foo\b\nbar\r\n', 'abc\rxyz\b\b='] |
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35 | 37 | expected_outputs = [u'x=z\u2029', u'foo\u2029bar\u2029', u'foo\u2029bar\u2029', 'x=z'] |
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36 | 38 | for i, text in enumerate(test_inputs): |
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37 | 39 | w._insert_plain_text(cursor, text) |
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38 | 40 | cursor.select(cursor.Document) |
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39 | 41 | selection = cursor.selectedText() |
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40 | 42 | self.assertEqual(expected_outputs[i], selection) |
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41 | 43 | # clear all the text |
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42 | 44 | cursor.insertText('') |
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43 | 45 | |
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44 | 46 | def test_link_handling(self): |
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45 | 47 | noKeys = QtCore.Qt |
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46 | 48 | noButton = QtCore.Qt.MouseButton(0) |
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47 | 49 | noButtons = QtCore.Qt.MouseButtons(0) |
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48 | 50 | noModifiers = QtCore.Qt.KeyboardModifiers(0) |
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49 | 51 | MouseMove = QtCore.QEvent.MouseMove |
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50 | 52 | QMouseEvent = QtGui.QMouseEvent |
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51 | 53 | |
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52 | 54 | w = ConsoleWidget() |
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53 | 55 | cursor = w._get_prompt_cursor() |
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54 | 56 | w._insert_html(cursor, '<a href="http://python.org">written in</a>') |
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55 | 57 | obj = w._control |
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56 | 58 | tip = QtGui.QToolTip |
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57 | 59 | self.assertEqual(tip.text(), u'') |
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58 | 60 | |
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59 | 61 | # should be somewhere else |
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60 | 62 | elsewhereEvent = QMouseEvent(MouseMove, QtCore.QPoint(50,50), |
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61 | 63 | noButton, noButtons, noModifiers) |
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62 | 64 | w.eventFilter(obj, elsewhereEvent) |
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63 | 65 | self.assertEqual(tip.isVisible(), False) |
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64 | 66 | self.assertEqual(tip.text(), u'') |
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65 | 67 | |
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66 | 68 | #self.assertEqual(tip.text(), u'') |
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67 | 69 | # should be over text |
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68 | 70 | overTextEvent = QMouseEvent(MouseMove, QtCore.QPoint(1,5), |
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69 | 71 | noButton, noButtons, noModifiers) |
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70 | 72 | w.eventFilter(obj, overTextEvent) |
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71 | 73 | self.assertEqual(tip.isVisible(), True) |
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72 | 74 | self.assertEqual(tip.text(), "http://python.org") |
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73 | 75 | |
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74 | 76 | # should still be over text |
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75 | 77 | stillOverTextEvent = QMouseEvent(MouseMove, QtCore.QPoint(1,5), |
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76 | 78 | noButton, noButtons, noModifiers) |
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77 | 79 | w.eventFilter(obj, stillOverTextEvent) |
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78 | 80 | self.assertEqual(tip.isVisible(), True) |
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79 | 81 | self.assertEqual(tip.text(), "http://python.org") |
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80 | 82 |
@@ -1,85 +1,87 b'' | |||
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1 | 1 | # Standard library imports |
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2 | 2 | import unittest |
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3 | 3 | |
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4 | 4 | # System library imports |
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5 | 5 | from IPython.external.qt import QtGui |
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6 | 6 | |
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7 | 7 | # Local imports |
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8 | 8 | from IPython.qt.console.kill_ring import KillRing, QtKillRing |
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9 | import IPython.testing.decorators as dec | |
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9 | 10 | |
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11 | setup = dec.skip_file_no_x11(__name__) | |
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10 | 12 | |
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11 | 13 | class TestKillRing(unittest.TestCase): |
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12 | 14 | |
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13 | 15 | @classmethod |
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14 | 16 | def setUpClass(cls): |
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15 | 17 | """ Create the application for the test case. |
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16 | 18 | """ |
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17 | 19 | cls._app = QtGui.QApplication.instance() |
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18 | 20 | if cls._app is None: |
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19 | 21 | cls._app = QtGui.QApplication([]) |
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20 | 22 | cls._app.setQuitOnLastWindowClosed(False) |
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21 | 23 | |
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22 | 24 | @classmethod |
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23 | 25 | def tearDownClass(cls): |
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24 | 26 | """ Exit the application. |
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25 | 27 | """ |
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26 | 28 | QtGui.QApplication.quit() |
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27 | 29 | |
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28 | 30 | def test_generic(self): |
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29 | 31 | """ Does the generic kill ring work? |
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30 | 32 | """ |
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31 | 33 | ring = KillRing() |
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32 | 34 | self.assertTrue(ring.yank() is None) |
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33 | 35 | self.assertTrue(ring.rotate() is None) |
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34 | 36 | |
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35 | 37 | ring.kill('foo') |
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36 | 38 | self.assertEqual(ring.yank(), 'foo') |
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37 | 39 | self.assertTrue(ring.rotate() is None) |
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38 | 40 | self.assertEqual(ring.yank(), 'foo') |
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39 | 41 | |
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40 | 42 | ring.kill('bar') |
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41 | 43 | self.assertEqual(ring.yank(), 'bar') |
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42 | 44 | self.assertEqual(ring.rotate(), 'foo') |
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43 | 45 | |
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44 | 46 | ring.clear() |
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45 | 47 | self.assertTrue(ring.yank() is None) |
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46 | 48 | self.assertTrue(ring.rotate() is None) |
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47 | 49 | |
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48 | 50 | def test_qt_basic(self): |
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49 | 51 | """ Does the Qt kill ring work? |
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50 | 52 | """ |
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51 | 53 | text_edit = QtGui.QPlainTextEdit() |
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52 | 54 | ring = QtKillRing(text_edit) |
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53 | 55 | |
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54 | 56 | ring.kill('foo') |
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55 | 57 | ring.kill('bar') |
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56 | 58 | ring.yank() |
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57 | 59 | ring.rotate() |
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58 | 60 | ring.yank() |
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59 | 61 | self.assertEqual(text_edit.toPlainText(), 'foobar') |
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60 | 62 | |
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61 | 63 | text_edit.clear() |
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62 | 64 | ring.kill('baz') |
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63 | 65 | ring.yank() |
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64 | 66 | ring.rotate() |
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65 | 67 | ring.rotate() |
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66 | 68 | ring.rotate() |
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67 | 69 | self.assertEqual(text_edit.toPlainText(), 'foo') |
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68 | 70 | |
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69 | 71 | def test_qt_cursor(self): |
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70 | 72 | """ Does the Qt kill ring maintain state with cursor movement? |
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71 | 73 | """ |
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72 | 74 | text_edit = QtGui.QPlainTextEdit() |
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73 | 75 | ring = QtKillRing(text_edit) |
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74 | 76 | |
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75 | 77 | ring.kill('foo') |
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76 | 78 | ring.kill('bar') |
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77 | 79 | ring.yank() |
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78 | 80 | text_edit.moveCursor(QtGui.QTextCursor.Left) |
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79 | 81 | ring.rotate() |
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80 | 82 | self.assertEqual(text_edit.toPlainText(), 'bar') |
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81 | 83 | |
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82 | 84 | |
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83 | 85 | if __name__ == '__main__': |
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84 | 86 | import nose |
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85 | 87 | nose.main() |
@@ -1,366 +1,391 b'' | |||
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1 | 1 | # -*- coding: utf-8 -*- |
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2 | 2 | """Decorators for labeling test objects. |
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3 | 3 | |
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4 | 4 | Decorators that merely return a modified version of the original function |
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5 | 5 | object are straightforward. Decorators that return a new function object need |
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6 | 6 | to use nose.tools.make_decorator(original_function)(decorator) in returning the |
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7 | 7 | decorator, in order to preserve metadata such as function name, setup and |
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8 | 8 | teardown functions and so on - see nose.tools for more information. |
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9 | 9 | |
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10 | 10 | This module provides a set of useful decorators meant to be ready to use in |
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11 | 11 | your own tests. See the bottom of the file for the ready-made ones, and if you |
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12 | 12 | find yourself writing a new one that may be of generic use, add it here. |
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13 | 13 | |
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14 | 14 | Included decorators: |
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15 | 15 | |
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16 | 16 | |
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17 | 17 | Lightweight testing that remains unittest-compatible. |
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18 | 18 | |
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19 | 19 | - @parametric, for parametric test support that is vastly easier to use than |
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20 | 20 | nose's for debugging. With ours, if a test fails, the stack under inspection |
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21 | 21 | is that of the test and not that of the test framework. |
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22 | 22 | |
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23 | 23 | - An @as_unittest decorator can be used to tag any normal parameter-less |
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24 | 24 | function as a unittest TestCase. Then, both nose and normal unittest will |
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25 | 25 | recognize it as such. This will make it easier to migrate away from Nose if |
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26 | 26 | we ever need/want to while maintaining very lightweight tests. |
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27 | 27 | |
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28 | 28 | NOTE: This file contains IPython-specific decorators. Using the machinery in |
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29 | 29 | IPython.external.decorators, we import either numpy.testing.decorators if numpy is |
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30 | 30 | available, OR use equivalent code in IPython.external._decorators, which |
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31 | 31 | we've copied verbatim from numpy. |
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32 | 32 | |
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33 | 33 | Authors |
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34 | 34 | ------- |
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35 | 35 | |
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36 | 36 | - Fernando Perez <Fernando.Perez@berkeley.edu> |
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37 | 37 | """ |
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38 | 38 | |
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39 | 39 | #----------------------------------------------------------------------------- |
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40 | 40 | # Copyright (C) 2009-2011 The IPython Development Team |
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41 | 41 | # |
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42 | 42 | # Distributed under the terms of the BSD License. The full license is in |
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43 | 43 | # the file COPYING, distributed as part of this software. |
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44 | 44 | #----------------------------------------------------------------------------- |
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45 | 45 | |
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46 | 46 | #----------------------------------------------------------------------------- |
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47 | 47 | # Imports |
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48 | 48 | #----------------------------------------------------------------------------- |
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49 | 49 | |
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50 | 50 | # Stdlib imports |
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51 | 51 | import sys |
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52 | import os | |
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52 | 53 | import tempfile |
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53 | 54 | import unittest |
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54 | 55 | |
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55 | 56 | # Third-party imports |
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56 | 57 | |
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57 | 58 | # This is Michele Simionato's decorator module, kept verbatim. |
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58 | 59 | from IPython.external.decorator import decorator |
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59 | 60 | |
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60 | 61 | # We already have python3-compliant code for parametric tests |
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61 | 62 | if sys.version[0]=='2': |
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62 | 63 | from _paramtestpy2 import parametric |
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63 | 64 | else: |
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64 | 65 | from _paramtestpy3 import parametric |
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65 | 66 | |
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66 | 67 | # Expose the unittest-driven decorators |
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67 | 68 | from ipunittest import ipdoctest, ipdocstring |
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68 | 69 | |
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69 | 70 | # Grab the numpy-specific decorators which we keep in a file that we |
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70 | 71 | # occasionally update from upstream: decorators.py is a copy of |
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71 | 72 | # numpy.testing.decorators, we expose all of it here. |
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72 | 73 | from IPython.external.decorators import * |
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73 | 74 | |
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74 | 75 | # For onlyif_cmd_exists decorator |
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75 | 76 | from IPython.utils.process import is_cmd_found |
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76 | 77 | |
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77 | 78 | #----------------------------------------------------------------------------- |
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78 | 79 | # Classes and functions |
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79 | 80 | #----------------------------------------------------------------------------- |
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80 | 81 | |
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81 | 82 | # Simple example of the basic idea |
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82 | 83 | def as_unittest(func): |
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83 | 84 | """Decorator to make a simple function into a normal test via unittest.""" |
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84 | 85 | class Tester(unittest.TestCase): |
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85 | 86 | def test(self): |
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86 | 87 | func() |
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87 | 88 | |
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88 | 89 | Tester.__name__ = func.__name__ |
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89 | 90 | |
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90 | 91 | return Tester |
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91 | 92 | |
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92 | 93 | # Utility functions |
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93 | 94 | |
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94 | 95 | def apply_wrapper(wrapper,func): |
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95 | 96 | """Apply a wrapper to a function for decoration. |
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96 | 97 | |
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97 | 98 | This mixes Michele Simionato's decorator tool with nose's make_decorator, |
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98 | 99 | to apply a wrapper in a decorator so that all nose attributes, as well as |
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99 | 100 | function signature and other properties, survive the decoration cleanly. |
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100 | 101 | This will ensure that wrapped functions can still be well introspected via |
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101 | 102 | IPython, for example. |
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102 | 103 | """ |
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103 | 104 | import nose.tools |
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104 | 105 | |
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105 | 106 | return decorator(wrapper,nose.tools.make_decorator(func)(wrapper)) |
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106 | 107 | |
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107 | 108 | |
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108 | 109 | def make_label_dec(label,ds=None): |
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109 | 110 | """Factory function to create a decorator that applies one or more labels. |
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110 | 111 | |
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111 | 112 | Parameters |
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112 | 113 | ---------- |
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113 | 114 | label : string or sequence |
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114 | 115 | One or more labels that will be applied by the decorator to the functions |
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115 | 116 | it decorates. Labels are attributes of the decorated function with their |
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116 | 117 | value set to True. |
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117 | 118 | |
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118 | 119 | ds : string |
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119 | 120 | An optional docstring for the resulting decorator. If not given, a |
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120 | 121 | default docstring is auto-generated. |
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121 | 122 | |
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122 | 123 | Returns |
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123 | 124 | ------- |
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124 | 125 | A decorator. |
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125 | 126 | |
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126 | 127 | Examples |
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127 | 128 | -------- |
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128 | 129 | |
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129 | 130 | A simple labeling decorator: |
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130 | 131 | |
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131 | 132 | >>> slow = make_label_dec('slow') |
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132 | 133 | >>> slow.__doc__ |
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133 | 134 | "Labels a test as 'slow'." |
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134 | 135 | |
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135 | 136 | And one that uses multiple labels and a custom docstring: |
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136 | 137 | |
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137 | 138 | >>> rare = make_label_dec(['slow','hard'], |
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138 | 139 | ... "Mix labels 'slow' and 'hard' for rare tests.") |
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139 | 140 | >>> rare.__doc__ |
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140 | 141 | "Mix labels 'slow' and 'hard' for rare tests." |
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141 | 142 | |
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142 | 143 | Now, let's test using this one: |
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143 | 144 | >>> @rare |
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144 | 145 | ... def f(): pass |
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145 | 146 | ... |
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146 | 147 | >>> |
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147 | 148 | >>> f.slow |
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148 | 149 | True |
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149 | 150 | >>> f.hard |
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150 | 151 | True |
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151 | 152 | """ |
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152 | 153 | |
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153 | 154 | if isinstance(label,basestring): |
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154 | 155 | labels = [label] |
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155 | 156 | else: |
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156 | 157 | labels = label |
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157 | 158 | |
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158 | 159 | # Validate that the given label(s) are OK for use in setattr() by doing a |
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159 | 160 | # dry run on a dummy function. |
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160 | 161 | tmp = lambda : None |
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161 | 162 | for label in labels: |
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162 | 163 | setattr(tmp,label,True) |
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163 | 164 | |
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164 | 165 | # This is the actual decorator we'll return |
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165 | 166 | def decor(f): |
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166 | 167 | for label in labels: |
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167 | 168 | setattr(f,label,True) |
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168 | 169 | return f |
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169 | 170 | |
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170 | 171 | # Apply the user's docstring, or autogenerate a basic one |
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171 | 172 | if ds is None: |
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172 | 173 | ds = "Labels a test as %r." % label |
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173 | 174 | decor.__doc__ = ds |
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174 | 175 | |
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175 | 176 | return decor |
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176 | 177 | |
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177 | 178 | |
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178 | 179 | # Inspired by numpy's skipif, but uses the full apply_wrapper utility to |
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179 | 180 | # preserve function metadata better and allows the skip condition to be a |
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180 | 181 | # callable. |
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181 | 182 | def skipif(skip_condition, msg=None): |
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182 | 183 | ''' Make function raise SkipTest exception if skip_condition is true |
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183 | 184 | |
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184 | 185 | Parameters |
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185 | 186 | ---------- |
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186 | 187 | skip_condition : bool or callable. |
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187 | 188 | Flag to determine whether to skip test. If the condition is a |
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188 | 189 | callable, it is used at runtime to dynamically make the decision. This |
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189 | 190 | is useful for tests that may require costly imports, to delay the cost |
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190 | 191 | until the test suite is actually executed. |
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191 | 192 | msg : string |
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192 | 193 | Message to give on raising a SkipTest exception |
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193 | 194 | |
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194 | 195 | Returns |
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195 | 196 | ------- |
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196 | 197 | decorator : function |
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197 | 198 | Decorator, which, when applied to a function, causes SkipTest |
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198 | 199 | to be raised when the skip_condition was True, and the function |
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199 | 200 | to be called normally otherwise. |
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200 | 201 | |
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201 | 202 | Notes |
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202 | 203 | ----- |
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203 | 204 | You will see from the code that we had to further decorate the |
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204 | 205 | decorator with the nose.tools.make_decorator function in order to |
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205 | 206 | transmit function name, and various other metadata. |
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206 | 207 | ''' |
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207 | 208 | |
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208 | 209 | def skip_decorator(f): |
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209 | 210 | # Local import to avoid a hard nose dependency and only incur the |
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210 | 211 | # import time overhead at actual test-time. |
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211 | 212 | import nose |
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212 | 213 | |
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213 | 214 | # Allow for both boolean or callable skip conditions. |
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214 | 215 | if callable(skip_condition): |
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215 | 216 | skip_val = skip_condition |
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216 | 217 | else: |
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217 | 218 | skip_val = lambda : skip_condition |
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218 | 219 | |
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219 | 220 | def get_msg(func,msg=None): |
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220 | 221 | """Skip message with information about function being skipped.""" |
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221 | 222 | if msg is None: out = 'Test skipped due to test condition.' |
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222 | 223 | else: out = msg |
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223 | 224 | return "Skipping test: %s. %s" % (func.__name__,out) |
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224 | 225 | |
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225 | 226 | # We need to define *two* skippers because Python doesn't allow both |
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226 | 227 | # return with value and yield inside the same function. |
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227 | 228 | def skipper_func(*args, **kwargs): |
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228 | 229 | """Skipper for normal test functions.""" |
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229 | 230 | if skip_val(): |
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230 | 231 | raise nose.SkipTest(get_msg(f,msg)) |
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231 | 232 | else: |
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232 | 233 | return f(*args, **kwargs) |
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233 | 234 | |
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234 | 235 | def skipper_gen(*args, **kwargs): |
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235 | 236 | """Skipper for test generators.""" |
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236 | 237 | if skip_val(): |
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237 | 238 | raise nose.SkipTest(get_msg(f,msg)) |
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238 | 239 | else: |
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239 | 240 | for x in f(*args, **kwargs): |
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240 | 241 | yield x |
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241 | 242 | |
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242 | 243 | # Choose the right skipper to use when building the actual generator. |
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243 | 244 | if nose.util.isgenerator(f): |
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244 | 245 | skipper = skipper_gen |
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245 | 246 | else: |
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246 | 247 | skipper = skipper_func |
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247 | 248 | |
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248 | 249 | return nose.tools.make_decorator(f)(skipper) |
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249 | 250 | |
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250 | 251 | return skip_decorator |
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251 | 252 | |
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252 | 253 | # A version with the condition set to true, common case just to attach a message |
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253 | 254 | # to a skip decorator |
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254 | 255 | def skip(msg=None): |
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255 | 256 | """Decorator factory - mark a test function for skipping from test suite. |
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256 | 257 | |
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257 | 258 | Parameters |
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258 | 259 | ---------- |
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259 | 260 | msg : string |
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260 | 261 | Optional message to be added. |
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261 | 262 | |
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262 | 263 | Returns |
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263 | 264 | ------- |
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264 | 265 | decorator : function |
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265 | 266 | Decorator, which, when applied to a function, causes SkipTest |
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266 | 267 | to be raised, with the optional message added. |
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267 | 268 | """ |
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268 | 269 | |
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269 | 270 | return skipif(True,msg) |
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270 | 271 | |
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271 | 272 | |
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272 | 273 | def onlyif(condition, msg): |
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273 | 274 | """The reverse from skipif, see skipif for details.""" |
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274 | 275 | |
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275 | 276 | if callable(condition): |
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276 | 277 | skip_condition = lambda : not condition() |
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277 | 278 | else: |
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278 | 279 | skip_condition = lambda : not condition |
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279 | 280 | |
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280 | 281 | return skipif(skip_condition, msg) |
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281 | 282 | |
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282 | 283 | #----------------------------------------------------------------------------- |
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283 | 284 | # Utility functions for decorators |
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284 | 285 | def module_not_available(module): |
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285 | 286 | """Can module be imported? Returns true if module does NOT import. |
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286 | 287 | |
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287 | 288 | This is used to make a decorator to skip tests that require module to be |
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288 | 289 | available, but delay the 'import numpy' to test execution time. |
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289 | 290 | """ |
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290 | 291 | try: |
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291 | 292 | mod = __import__(module) |
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292 | 293 | mod_not_avail = False |
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293 | 294 | except ImportError: |
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294 | 295 | mod_not_avail = True |
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295 | 296 | |
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296 | 297 | return mod_not_avail |
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297 | 298 | |
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299 | ||
|
300 | def decorated_dummy(dec, name): | |
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301 | """Return a dummy function decorated with dec, with the given name. | |
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302 | ||
|
303 | Examples | |
|
304 | -------- | |
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305 | import IPython.testing.decorators as dec | |
|
306 | setup = dec.decorated_dummy(dec.skip_if_no_x11, __name__) | |
|
307 | """ | |
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308 | dummy = lambda: None | |
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309 | dummy.__name__ = name | |
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310 | return dec(dummy) | |
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311 | ||
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298 | 312 | #----------------------------------------------------------------------------- |
|
299 | 313 | # Decorators for public use |
|
300 | 314 | |
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301 | 315 | # Decorators to skip certain tests on specific platforms. |
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302 | 316 | skip_win32 = skipif(sys.platform == 'win32', |
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303 | 317 | "This test does not run under Windows") |
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304 | 318 | skip_linux = skipif(sys.platform.startswith('linux'), |
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305 | 319 | "This test does not run under Linux") |
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306 | 320 | skip_osx = skipif(sys.platform == 'darwin',"This test does not run under OS X") |
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307 | 321 | |
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308 | 322 | |
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309 | 323 | # Decorators to skip tests if not on specific platforms. |
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310 | 324 | skip_if_not_win32 = skipif(sys.platform != 'win32', |
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311 | 325 | "This test only runs under Windows") |
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312 | 326 | skip_if_not_linux = skipif(not sys.platform.startswith('linux'), |
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313 | 327 | "This test only runs under Linux") |
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314 | 328 | skip_if_not_osx = skipif(sys.platform != 'darwin', |
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315 | 329 | "This test only runs under OSX") |
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316 | 330 | |
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331 | ||
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332 | _x11_skip_cond = (sys.platform not in ('darwin', 'win32') and | |
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333 | os.environ['DISPLAY']=='') | |
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334 | _x11_skip_msg = "Skipped under *nix when X11/XOrg not available" | |
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335 | ||
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336 | skip_if_no_x11 = skipif(_x11_skip_cond, _x11_skip_msg) | |
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337 | ||
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338 | # not a decorator itself, returns a dummy function to be used as setup | |
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339 | def skip_file_no_x11(name): | |
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340 | return decorated_dummy(skip_if_no_x11, name) if _x11_skip_cond else None | |
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341 | ||
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317 | 342 | # Other skip decorators |
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318 | 343 | |
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319 | 344 | # generic skip without module |
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320 | 345 | skip_without = lambda mod: skipif(module_not_available(mod), "This test requires %s" % mod) |
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321 | 346 | |
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322 | 347 | skipif_not_numpy = skip_without('numpy') |
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323 | 348 | |
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324 | 349 | skipif_not_matplotlib = skip_without('matplotlib') |
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325 | 350 | |
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326 | 351 | skipif_not_sympy = skip_without('sympy') |
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327 | 352 | |
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328 | 353 | skip_known_failure = knownfailureif(True,'This test is known to fail') |
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329 | 354 | |
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330 | 355 | known_failure_py3 = knownfailureif(sys.version_info[0] >= 3, |
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331 | 356 | 'This test is known to fail on Python 3.') |
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332 | 357 | |
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333 | 358 | # A null 'decorator', useful to make more readable code that needs to pick |
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334 | 359 | # between different decorators based on OS or other conditions |
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335 | 360 | null_deco = lambda f: f |
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336 | 361 | |
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337 | 362 | # Some tests only run where we can use unicode paths. Note that we can't just |
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338 | 363 | # check os.path.supports_unicode_filenames, which is always False on Linux. |
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339 | 364 | try: |
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340 | 365 | f = tempfile.NamedTemporaryFile(prefix=u"tmp€") |
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341 | 366 | except UnicodeEncodeError: |
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342 | 367 | unicode_paths = False |
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343 | 368 | else: |
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344 | 369 | unicode_paths = True |
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345 | 370 | f.close() |
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346 | 371 | |
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347 | 372 | onlyif_unicode_paths = onlyif(unicode_paths, ("This test is only applicable " |
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348 | 373 | "where we can use unicode in filenames.")) |
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349 | 374 | |
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350 | 375 | |
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351 | 376 | def onlyif_cmds_exist(*commands): |
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352 | 377 | """ |
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353 | 378 | Decorator to skip test when at least one of `commands` is not found. |
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354 | 379 | """ |
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355 | 380 | for cmd in commands: |
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356 | 381 | try: |
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357 | 382 | if not is_cmd_found(cmd): |
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358 | 383 | return skip("This test runs only if command '{0}' " |
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359 | 384 | "is installed".format(cmd)) |
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360 | 385 | except ImportError as e: |
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361 | 386 | # is_cmd_found uses pywin32 on windows, which might not be available |
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362 | 387 | if sys.platform == 'win32' and 'pywin32' in e.message: |
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363 | 388 | return skip("This test runs only if pywin32 and command '{0}' " |
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364 | 389 | "is installed".format(cmd)) |
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365 | 390 | raise e |
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366 | 391 | return null_deco |
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