add column test

src/core/tests/widgets/internal/test_tablecolumn.py

@@ -0,0 +1,67 @@
+import toga
+import toga_dummy
+from toga.widgets.internal.tablecolumn import Column
+from toga_dummy.utils import TestCase
+
+
+class Node:
+    def __init__(self):
+        self.text_accessor = "lore ipsum"
+        self.icon_accessor = "path_to_icon"
+        self.checked_state_accessor = True
+
+
+class ColumnTests(TestCase):
+    def setUp(self):
+        super().setUp()
+        self.column = Column(
+            title="Title",
+            text="text_accessor",
+            icon="icon_accessor",
+            checked_state="checked_state_accessor",
+            editable=True,
+            factory=toga_dummy.factory
+        )
+
+    def test_widget_created(self):
+        self.assertEqual(self.column._impl.interface, self.column)
+        self.assertEqual(self.column.title, "Title")
+        self.assertTrue(self.column.editable)
+
+        self.assertActionPerformed(self.column, 'create Column')
+
+    def test_get_data_for_node(self):
+        node = Node()
+
+        text = self.column.get_data_for_node(node, "text")
+        icon = self.column.get_data_for_node(node, "icon")
+        checked_state = self.column.get_data_for_node(node, "checked_state")
+
+        self.assertEqual(text, "lore ipsum")
+        self.assertIsInstance(icon, toga.Icon)
+        self.assertEqual(checked_state, 1)
+
+    def test_get_data_for_node_invalid_accessor(self):
+        node = Node()
+
+        with self.assertRaises(ValueError):
+            self.column.get_data_for_node(node, "progress")
+
+    def test_get_data_for_node_missing_data(self):
+        node = Node()
+        del node.checked_state_accessor
+
+        checked_state = self.column.get_data_for_node(node, "checked_state")
+        self.assertIsNone(checked_state)
+
+    def test_set_data_for_node(self):
+        node = Node()
+
+        self.column.set_data_for_node(node, "text", "donor soret")
+        self.assertEqual(node.text_accessor, "donor soret")
+
+    def test_set_data_for_node_invalid_accessor(self):
+        node = Node()
+
+        with self.assertRaises(ValueError):
+            self.column.set_data_for_node(node, "progress", 0.6)