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# Test methods with long descriptive names can omit docstrings
# pylint: disable=missing-docstring
import os
import pickle
from tempfile import NamedTemporaryFile
import unittest
from unittest.mock import Mock, patch
import numpy as np
from AnyQt.QtCore import QMimeData, QUrl
from orangewidget.utils.filedialogs import RecentPath
from Orange.data import Table
from Orange.classification.naive_bayes import NaiveBayesLearner
from Orange.widgets.model.owloadmodel import OWLoadModel, OWLoadModelDropHandler
from Orange.widgets.tests.base import WidgetTest
from Orange.widgets.tests.utils import dragDrop
class TestOWLoadModel(WidgetTest):
# Attribute used to store event data so it does not get garbage
# collected before event is processed.
event_data = None
def setUp(self):
super().setUp()
self.widget = self.create_widget(OWLoadModel) # type: OWLoadModel
data = Table("iris")
self.model = NaiveBayesLearner()(data)
with NamedTemporaryFile(suffix=".pkcls", delete=False) as f:
self.filename = f.name
pickle.dump(self.model, f)
def tearDown(self):
os.remove(self.filename)
super().tearDown()
def test_browse_file_opens_file(self):
w = self.widget
with patch("AnyQt.QtWidgets.QFileDialog.getOpenFileName",
Mock(return_value=(self.filename, "*.pkcls"))):
w.browse_file()
model = self.get_output(w.Outputs.model)
np.testing.assert_equal(
model.log_cont_prob, self.model.log_cont_prob)
with patch("AnyQt.QtWidgets.QFileDialog.getOpenFileName",
Mock(return_value=("", "*.pkcls"))):
w.browse_file()
# Keep the same model on output
model2 = self.get_output(w.Outputs.model)
self.assertIs(model2, model)
with patch("AnyQt.QtWidgets.QFileDialog.getOpenFileName",
Mock(return_value=(self.filename, "*.pkcls"))):
w.reload()
model2 = self.get_output(w.Outputs.model)
self.assertIsNot(model2, model)
@patch("pickle.load")
def test_select_file(self, load):
w = self.widget
with NamedTemporaryFile(suffix=".pkcls") as f2, \
NamedTemporaryFile(suffix=".pkcls", delete=False) as f3:
w.add_path(self.filename)
w.add_path(f2.name)
w.add_path(f3.name)
w.open_file()
args = load.call_args[0][0]
self.assertEqual(args.name, f3.name.replace("\\", "/"))
w.select_file(2)
args = load.call_args[0][0]
self.assertEqual(args.name, self.filename.replace("\\", "/"))
def test_load_error(self):
w = self.widget
with patch("AnyQt.QtWidgets.QFileDialog.getOpenFileName",
Mock(return_value=(self.filename, "*.pkcls"))):
with patch("pickle.load", side_effect=pickle.UnpicklingError):
w.browse_file()
self.assertTrue(w.Error.load_error.is_shown())
self.assertIsNone(self.get_output(w.Outputs.model))
w.reload()
self.assertFalse(w.Error.load_error.is_shown())
model = self.get_output(w.Outputs.model)
self.assertIsNotNone(model)
with patch.object(w, "last_path", Mock(return_value="")), \
patch("pickle.load") as load:
w.reload()
load.assert_not_called()
self.assertFalse(w.Error.load_error.is_shown())
self.assertIs(self.get_output(w.Outputs.model), model)
with patch("pickle.load", side_effect=pickle.UnpicklingError):
w.reload()
self.assertTrue(w.Error.load_error.is_shown())
self.assertIsNone(self.get_output(w.Outputs.model))
with patch("AnyQt.QtWidgets.QFileDialog.getOpenFileName",
Mock(return_value=("foo", "*.pkcls"))):
w.browse_file()
self.assertTrue(w.Error.load_error.is_shown())
self.assertIsNone(self.get_output(w.Outputs.model))
def test_no_last_path(self):
self.widget = \
self.create_widget(OWLoadModel,
stored_settings={"recent_paths": []})
# Doesn't crash and contains a single item, (none).
self.assertEqual(self.widget.file_combo.count(), 1)
@patch("Orange.widgets.widget.OWWidget.workflowEnv",
Mock(return_value={"basedir": os.getcwd()}))
@patch("pickle.load")
def test_open_moved_workflow(self, load):
"""
Test opening workflow that has been moved to another location
(i.e. sent by email), considering data file is stored in the same
directory as the workflow.
"""
temp_file = NamedTemporaryFile(dir=os.getcwd(), delete=False)
file_name = temp_file.name
temp_file.close()
base_name = os.path.basename(file_name)
try:
recent_path = RecentPath(
os.path.join("temp/models", base_name), "",
os.path.join("models", base_name)
)
stored_settings = {"recent_paths": [recent_path]}
w = self.create_widget(OWLoadModel,
stored_settings=stored_settings)
w.open_file()
self.assertEqual(w.file_combo.count(), 1)
args = load.call_args[0][0]
self.assertEqual(args.name, file_name.replace("\\", "/"))
finally:
os.remove(file_name)
def test_drop_file(self):
mime = QMimeData()
mime.setUrls([QUrl("https://example.com/a.html")])
with patch.object(self.widget, "open_file") as r:
self.assertFalse(dragDrop(self.widget, mime))
r.assert_not_called()
mime.setUrls([QUrl.fromLocalFile("file.notsupported")])
with patch.object(self.widget, "open_file") as r:
self.assertFalse(dragDrop(self.widget, mime))
r.assert_not_called()
mime.setUrls([QUrl.fromLocalFile(self.filename)])
with patch.object(self.widget, "open_file") as r:
self.assertTrue(dragDrop(self.widget, mime))
r.assert_called()
class TestOWLoadModelDropHandler(unittest.TestCase):
def test_canDropFile(self):
handler = OWLoadModelDropHandler()
self.assertTrue(handler.canDropFile("test.pkcls"))
self.assertFalse(handler.canDropFile("test.txt"))
def test_parametersFromFile(self):
handler = OWLoadModelDropHandler()
res = handler.parametersFromFile("test.pkcls")
self.assertEqual(res["recent_paths"][0].basename, "test.pkcls")
if __name__ == "__main__":
unittest.main()
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