1 files changed, 97 insertions, 0 deletions
diff --git a/Lib/idlelib/idle_test/test_textview.py b/Lib/idlelib/idle_test/test_textview.py
new file mode 100644
index 0000000000..68e5b82ad9
--- /dev/null
+++ b/Lib/idlelib/idle_test/test_textview.py
@@ -0,0 +1,97 @@
+'''Test the functions and main class method of textView.py.
+
+Since all methods and functions create (or destroy) a TextViewer, which
+is a widget containing multiple widgets, all tests must be gui tests.
+Using mock Text would not change this.  Other mocks are used to retrieve
+information about calls.
+
+The coverage is essentially 100%.
+'''
+from test.support import requires
+requires('gui')
+
+import unittest
+import os
+from tkinter import Tk
+from idlelib import textView as tv
+from idlelib.idle_test.mock_idle import Func
+from idlelib.idle_test.mock_tk import Mbox
+
+def setUpModule():
+    global root
+    root = Tk()
+
+def tearDownModule():
+    global root
+    root.destroy()  # pyflakes falsely sees root as undefined
+    del root
+
+
+class TV(tv.TextViewer):  # used by TextViewTest
+    transient = Func()
+    grab_set = Func()
+    wait_window = Func()
+
+class TextViewTest(unittest.TestCase):
+
+    def setUp(self):
+        TV.transient.__init__()
+        TV.grab_set.__init__()
+        TV.wait_window.__init__()
+
+    def test_init_modal(self):
+        view = TV(root, 'Title', 'test text')
+        self.assertTrue(TV.transient.called)
+        self.assertTrue(TV.grab_set.called)
+        self.assertTrue(TV.wait_window.called)
+        view.Ok()
+
+    def test_init_nonmodal(self):
+        view = TV(root, 'Title', 'test text', modal=False)
+        self.assertFalse(TV.transient.called)
+        self.assertFalse(TV.grab_set.called)
+        self.assertFalse(TV.wait_window.called)
+        view.Ok()
+
+    def test_ok(self):
+        view = TV(root, 'Title', 'test text', modal=False)
+        view.destroy = Func()
+        view.Ok()
+        self.assertTrue(view.destroy.called)
+        del view.destroy  # unmask real function
+        view.destroy
+
+
+class textviewTest(unittest.TestCase):
+
+    @classmethod
+    def setUpClass(cls):
+        cls.orig_mbox = tv.tkMessageBox
+        tv.tkMessageBox = Mbox
+
+    @classmethod
+    def tearDownClass(cls):
+        tv.tkMessageBox = cls.orig_mbox
+        del cls.orig_mbox
+
+    def test_view_text(self):
+        # If modal True, tkinter will error with 'can't invoke "event" command'
+        view = tv.view_text(root, 'Title', 'test text', modal=False)
+        self.assertIsInstance(view, tv.TextViewer)
+
+    def test_view_file(self):
+        test_dir = os.path.dirname(__file__)
+        testfile = os.path.join(test_dir, 'test_textview.py')
+        view = tv.view_file(root, 'Title', testfile, modal=False)
+        self.assertIsInstance(view, tv.TextViewer)
+        self.assertIn('Test', view.textView.get('1.0', '1.end'))
+        view.Ok()
+
+        # Mock messagebox will be used and view_file will not return anything
+        testfile = os.path.join(test_dir, '../notthere.py')
+        view = tv.view_file(root, 'Title', testfile, modal=False)
+        self.assertIsNone(view)
+
+
+if __name__ == '__main__':
+    unittest.main(verbosity=2)