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import sys
import unittest
from unittest.mock import MagicMock, call
from AnyQt.QtWidgets import QApplication
from orangewidget.tests.base import WidgetTest
from orangewidget.utils.widgetpreview import WidgetPreview
from orangewidget.widget import OWBaseWidget, Input
from orangewidget.utils import widgetpreview
# MagicMocks have no names, so we patch Input.__call__ to use them
# as input handlers
class MockInput(Input):
def __call__(self, method):
self.handler = self.name
return method
class TestWidgetPreviewBase(WidgetTest):
@classmethod
def setUpClass(cls):
super().setUpClass()
cls.app = app = QApplication.instance()
cls.orig_sys_exit = sys.exit
cls.orig_app_exec = app.exec
cls.orig_qapplication = widgetpreview.QApplication
sys.exit = MagicMock()
widgetpreview.QApplication = MagicMock(return_value=app)
app.exec = MagicMock()
@classmethod
def tearDownClass(cls):
app = QApplication.instance()
sys.exit = cls.orig_sys_exit
app.exec = cls.orig_app_exec
widgetpreview.QApplication = cls.orig_qapplication
del cls.app
super().tearDownClass()
def setUp(self):
# Class is defined within setUp to reset mocks before each test
class MockWidget(OWBaseWidget):
name = "foo"
class Inputs:
input_int = MockInput("int1", int)
input_float1 = MockInput("float1", float, default=True)
input_float2 = MockInput("float2", float)
input_str1 = MockInput("str1", str)
input_str2 = MockInput("str2", str)
int1 = Inputs.input_int(MagicMock())
float1 = Inputs.input_float1(MagicMock())
float2 = Inputs.input_float2(MagicMock())
str1 = Inputs.input_str1(MagicMock())
str2 = Inputs.input_str2(MagicMock())
show = MagicMock()
saveSettings = MagicMock()
super().setUp()
self.widgetClass = MockWidget
sys.exit.reset_mock()
widgetpreview.QApplication.reset_mock()
self.app.exec.reset_mock()
def tearDown(self) -> None:
super().tearDown()
def widget_constructor(self):
return self.widgetClass()
class TestWidgetPreview(TestWidgetPreviewBase):
def test_widget_is_shown_and_ran(self):
w = self.widgetClass
self.app.exec.reset_mock()
previewer = WidgetPreview(self.widget_constructor)
previewer.run()
w.show.assert_called()
w.show.reset_mock()
self.app.exec.assert_called()
self.app.exec.reset_mock()
w.saveSettings.assert_called()
w.saveSettings.reset_mock()
sys.exit.assert_called()
sys.exit.reset_mock()
self.assertIsNone(previewer.widget)
previewer.run(no_exit=True)
w.show.assert_called()
w.show.reset_mock()
self.app.exec.assert_called()
self.app.exec.reset_mock()
w.saveSettings.assert_not_called()
sys.exit.assert_not_called()
self.assertIsNotNone(previewer.widget)
widget = previewer.widget
previewer.run(no_exec=True, no_exit=True)
w.show.assert_not_called()
self.app.exec.assert_not_called()
w.saveSettings.assert_not_called()
sys.exit.assert_not_called()
self.assertIs(widget, previewer.widget)
previewer.run(no_exec=True)
w.show.assert_not_called()
self.app.exec.assert_not_called()
w.saveSettings.assert_called()
sys.exit.assert_called()
self.assertIsNone(previewer.widget)
def test_single_signal(self):
w = self.widgetClass
WidgetPreview(self.widget_constructor).run(42)
w.int1.assert_called_with(42)
WidgetPreview(self.widget_constructor).run(3.14)
w.float1.assert_called_with(3.14)
self.assertEqual(w.float2.call_count, 0)
with self.assertRaises(ValueError):
WidgetPreview(self.widget_constructor).run("foo")
with self.assertRaises(ValueError):
WidgetPreview(self.widget_constructor).run([])
def test_named_signals(self):
w = self.widgetClass
WidgetPreview(self.widget_constructor).run(42, float2=2.7, str1="foo")
w.int1.assert_called_with(42)
self.assertEqual(w.float1.call_count, 0)
w.float2.assert_called_with(2.7)
w.str1.assert_called_with("foo")
self.assertEqual(w.str2.call_count, 0)
def test_multiple_runs(self):
w = self.widgetClass
previewer = WidgetPreview(self.widget_constructor)
previewer.run(42, no_exit=True)
w.int1(43)
previewer.send_signals([(44, 1), (45, 2)])
previewer.run(46, no_exit=True)
w.int1.assert_has_calls(
[call(42), call(43), call(44, 1), call(45, 2), call(46)])
class TestWidgetPreviewInternal(TestWidgetPreviewBase):
def test_find_handler_name(self):
previewer = WidgetPreview(self.widget_constructor)
previewer.create_widget()
find_name = previewer._find_handler_name
self.assertEqual(find_name(42), "int1")
self.assertEqual(find_name(3.14), "float1")
self.assertRaises(ValueError, find_name, "foo")
self.assertRaises(ValueError, find_name, [])
self.assertRaises(ValueError, find_name, [42])
self.assertEqual(find_name([(42, 1)]), "int1")
self.assertEqual(find_name([(2, 1), (3, 2)]), "int1")
self.assertEqual(find_name([(42.4, 1)]), "float1")
self.assertEqual(find_name([(42.4, 1), (5.1, 1)]), "float1")
self.assertRaises(ValueError, find_name, [("foo", 1)])
self.assertRaises(ValueError, find_name, [])
def test_data_chunks(self):
self.assertEqual(
list(WidgetPreview._data_chunks(42)),
[(42, )])
self.assertEqual(
list(WidgetPreview._data_chunks((42, 1))),
[(42, 1)])
self.assertEqual(
list(WidgetPreview._data_chunks([(42, 1), (65, 3)])),
[(42, 1), (65, 3)])
def test_create_widget(self):
previewer = WidgetPreview(self.widget_constructor)
self.assertIsNone(previewer.widget)
previewer.create_widget()
self.assertIsInstance(previewer.widget, self.widgetClass)
def test_send_signals(self):
previewer = WidgetPreview(self.widget_constructor)
previewer.create_widget()
widget = previewer.widget
previewer.send_signals(42)
widget.int1.assert_called_with(42)
widget.int1.reset_mock()
previewer.send_signals(
[(42, 1), (40, 2)],
str2="foo",
float1=[(3.14, 1), (5.1, 8)])
widget.int1.assert_has_calls([call(42, 1), call(40, 2)])
widget.str2.assert_called_with("foo")
widget.float1.assert_has_calls([call(3.14, 1), call(5.1, 8)])
if __name__ == "__main__":
unittest.main()
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