Issue #6181: Fixed minor bugs in tkinter.Listbox methods:

bbox(), curselection() and get().

3 files changed, 54 insertions, 20 deletions

diff --git a/Lib/tkinter/test/test_tkinter/test_widgets.py b/Lib/tkinter/test/test_tkinter/test_widgets.py
index bac2755fed7..310fa92084d 100644
--- a/Lib/tkinter/test/test_tkinter/test_widgets.py
+++ b/Lib/tkinter/test/test_tkinter/test_widgets.py
@@ -467,11 +467,7 @@ class SpinboxTest(EntryTest, unittest.TestCase):
 
     def test_bbox(self):
         widget = self.create()
-        bbox = widget.bbox(0)
-        self.assertEqual(len(bbox), 4)
-        for item in bbox:
-            self.assertIsInstance(item, int)
-
+        self.assertIsBoundingBox(widget.bbox(0))
         self.assertRaises(tkinter.TclError, widget.bbox, 'noindex')
         self.assertRaises(tkinter.TclError, widget.bbox, None)
         self.assertRaises(TypeError, widget.bbox)
@@ -624,11 +620,7 @@ class TextTest(AbstractWidgetTest, unittest.TestCase):
 
     def test_bbox(self):
         widget = self.create()
-        bbox = widget.bbox('1.1')
-        self.assertEqual(len(bbox), 4)
-        for item in bbox:
-            self.assertIsInstance(item, int)
-
+        self.assertIsBoundingBox(widget.bbox('1.1'))
         self.assertIsNone(widget.bbox('end'))
         self.assertRaises(tkinter.TclError, widget.bbox, 'noindex')
         self.assertRaises(tkinter.TclError, widget.bbox, None)
@@ -785,6 +777,46 @@ class ListboxTest(AbstractWidgetTest, unittest.TestCase):
     def test_itemconfigure_selectforeground(self):
         self.check_itemconfigure('selectforeground', '#654321')
 
+    def test_box(self):
+        lb = self.create()
+        lb.insert(0, *('el%d' % i for i in range(8)))
+        lb.pack()
+        self.assertIsBoundingBox(lb.bbox(0))
+        self.assertIsNone(lb.bbox(-1))
+        self.assertIsNone(lb.bbox(10))
+        self.assertRaises(TclError, lb.bbox, 'noindex')
+        self.assertRaises(TclError, lb.bbox, None)
+        self.assertRaises(TypeError, lb.bbox)
+        self.assertRaises(TypeError, lb.bbox, 0, 1)
+
+    def test_curselection(self):
+        lb = self.create()
+        lb.insert(0, *('el%d' % i for i in range(8)))
+        lb.selection_clear(0, tkinter.END)
+        lb.selection_set(2, 4)
+        lb.selection_set(6)
+        self.assertEqual(lb.curselection(), (2, 3, 4, 6))
+        self.assertRaises(TypeError, lb.curselection, 0)
+
+    def test_get(self):
+        lb = self.create()
+        lb.insert(0, *('el%d' % i for i in range(8)))
+        self.assertEqual(lb.get(0), 'el0')
+        self.assertEqual(lb.get(3), 'el3')
+        self.assertEqual(lb.get('end'), 'el7')
+        self.assertEqual(lb.get(8), '')
+        self.assertEqual(lb.get(-1), '')
+        self.assertEqual(lb.get(3, 5), ('el3', 'el4', 'el5'))
+        self.assertEqual(lb.get(5, 'end'), ('el5', 'el6', 'el7'))
+        self.assertEqual(lb.get(5, 0), ())
+        self.assertEqual(lb.get(0, 0), ('el0',))
+        self.assertRaises(TclError, lb.get, 'noindex')
+        self.assertRaises(TclError, lb.get, None)
+        self.assertRaises(TypeError, lb.get)
+        self.assertRaises(TclError, lb.get, 'end', 'noindex')
+        self.assertRaises(TypeError, lb.get, 1, 2, 3)
+        self.assertRaises(TclError, lb.get, 2.4)
+
 
 @add_standard_options(PixelSizeTests, StandardOptionsTests)
 class ScaleTest(AbstractWidgetTest, unittest.TestCase):
diff --git a/Lib/tkinter/test/test_ttk/test_widgets.py b/Lib/tkinter/test/test_ttk/test_widgets.py
index 3ac14be6d59..41927ddd74b 100644
--- a/Lib/tkinter/test/test_ttk/test_widgets.py
+++ b/Lib/tkinter/test/test_ttk/test_widgets.py
@@ -460,10 +460,7 @@ class EntryTest(AbstractWidgetTest, unittest.TestCase):
 
 
     def test_bbox(self):
-        self.assertEqual(len(self.entry.bbox(0)), 4)
-        for item in self.entry.bbox(0):
-            self.assertIsInstance(item, int)
-
+        self.assertIsBoundingBox(self.entry.bbox(0))
         self.assertRaises(tkinter.TclError, self.entry.bbox, 'noindex')
         self.assertRaises(tkinter.TclError, self.entry.bbox, None)
 
@@ -1216,12 +1213,7 @@ class TreeviewTest(AbstractWidgetTest, unittest.TestCase):
         self.assertTrue(children)
 
         bbox = self.tv.bbox(children[0])
-        self.assertEqual(len(bbox), 4)
-        self.assertIsInstance(bbox, tuple)
-        for item in bbox:
-            if not isinstance(item, int):
-                self.fail("Invalid bounding box: %s" % bbox)
-                break
+        self.assertIsBoundingBox(bbox)
 
         # compare width in bboxes
         self.tv['columns'] = ['test']
diff --git a/Lib/tkinter/test/widget_tests.py b/Lib/tkinter/test/widget_tests.py
index d983acc2108..26bf1625564 100644
--- a/Lib/tkinter/test/widget_tests.py
+++ b/Lib/tkinter/test/widget_tests.py
@@ -202,6 +202,16 @@ class AbstractWidgetTest:
     def checkVariableParam(self, widget, name, var):
         self.checkParam(widget, name, var, conv=str)
 
+    def assertIsBoundingBox(self, bbox):
+        self.assertIsNotNone(bbox)
+        self.assertIsInstance(bbox, tuple)
+        if len(bbox) != 4:
+            self.fail('Invalid bounding box: %r' % (bbox,))
+        for item in bbox:
+            if not isinstance(item, int):
+                self.fail('Invalid bounding box: %r' % (bbox,))
+                break
+
 
 class StandardOptionsTests:
     STANDARD_OPTIONS = (