test_owdatasets: Add tests

Author: lanzagar

Orange/widgets/data/tests/test_owdatasets.py

@@ -9,7 +9,34 @@
 class TestOWDataSets(WidgetTest):
     @patch("Orange.widgets.data.owdatasets.list_remote",
            Mock(side_effect=requests.exceptions.ConnectionError))
+    @patch("Orange.widgets.data.owdatasets.list_local", Mock(return_value={}))
     @patch("Orange.widgets.data.owdatasets.log", Mock())
-    def test_works_without_internet_connection(self):
+    def test_no_internet_connection(self):
         w = self.create_widget(OWDataSets)  # type: OWDataSets
         self.assertTrue(w.Error.no_remote_datasets.is_shown())
+
+    @patch("Orange.widgets.data.owdatasets.list_remote",
+           Mock(side_effect=requests.exceptions.ConnectionError))
+    @patch("Orange.widgets.data.owdatasets.list_local",
+           Mock(return_value={('core', 'foo.tab'): {}}))
+    @patch("Orange.widgets.data.owdatasets.log", Mock())
+    def test_only_local(self):
+        w = self.create_widget(OWDataSets)  # type: OWDataSets
+        self.assertTrue(w.Warning.only_local_datasets.is_shown())
+        self.assertEqual(w.view.model().rowCount(), 1)
+
+    @patch("Orange.widgets.data.owdatasets.list_remote",
+           Mock(side_effect=requests.exceptions.ConnectionError))
+    @patch("Orange.widgets.data.owdatasets.list_local",
+           Mock(return_value={('core', 'foo.tab'): {},
+                              ('core', 'bar.tab'): {}}))
+    @patch("Orange.widgets.data.owdatasets.log", Mock())
+    def test_filtering(self):
+        w = self.create_widget(OWDataSets)  # type: OWDataSets
+        self.assertEqual(w.view.model().rowCount(), 2)
+        w.filterLineEdit.setText("foo")
+        self.assertEqual(w.view.model().rowCount(), 1)
+        w.filterLineEdit.setText("baz")
+        self.assertEqual(w.view.model().rowCount(), 0)
+        w.filterLineEdit.setText("")
+        self.assertEqual(w.view.model().rowCount(), 2)