From a82d9228b66c914782b7cba6c971395be82313e8 Mon Sep 17 00:00:00 2001
From: simpoir <simpoir@Luyten.local>
Date: Mon, 16 Mar 2009 02:41:03 +0000
Subject: fixes following code review by Erick

overlayer test and fixed non-working code accordingly
---
(limited to 'src/sugar/tutorius/tests/overlaytests.py')

diff --git a/src/sugar/tutorius/tests/overlaytests.py b/src/sugar/tutorius/tests/overlaytests.py
new file mode 100644
index 0000000..b5fd209
--- /dev/null
+++ b/src/sugar/tutorius/tests/overlaytests.py
@@ -0,0 +1,115 @@
+# Copyright (C) 2009, Tutorius.org
+# Copyright (C) 2009, Simon Poirier <simpoir@gmail.com>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+"""
+GUI Tests
+
+This module contains all the tests that pertain to the usage of the Tutorius
+overlay mechanism used to display objects on top of the application.
+"""
+
+import unittest
+
+import logging
+import gtk, gobject
+from sugar.tutorius.actions import Action, BubbleMessage
+import sugar.tutorius.overlayer as overlayer
+
+class CanvasDrawable(object):
+    def __init__(self):
+        self._no_expose = False
+        self.exposition_count = 0
+    def _set_no_expose(self, value):
+        self._no_expose = value
+    def draw_with_context(self, context):
+        self.exposition_count += 1
+    no_expose = property(fset=_set_no_expose)
+
+
+class OverlayerTest(unittest.TestCase):
+    def test_cairodrawable_iface(self):
+        """
+        Quickly validates that all our cairo widgets have a minimal interface
+        implemented.
+        """
+        drawables = [overlayer.TextBubble]
+        for widget in drawables:
+            for attr in filter(lambda s:s[0]!='_', dir(CanvasDrawable)):
+                assert hasattr(widget, attr), \
+                    "%s not implementing CanvasDrawable iface"%widget.__name__
+
+
+    def test_drawn(self):
+        """
+        Ensures a cairo widget draw method is called at least once in
+        a real gui app.
+        """
+        win = gtk.Window(type=gtk.WINDOW_TOPLEVEL)
+
+        btn = gtk.Button()
+        btn.show()
+        overlay = overlayer.Overlayer(btn)
+        win.add(overlay)
+        # let's also try to draw substitute button label
+        lbl = overlayer.TextBubble("test!")
+        assert lbl.label == 'test!', \
+            "label property mismatch"
+        btn.show()
+        lbl.show()
+        btn.add(lbl)
+
+        lbl.no_expose = True
+        assert lbl.no_expose, "wrong no_expose evaluation"
+        lbl.no_expose = False
+        assert not lbl.no_expose, "wrong no_expose evaluation"
+
+
+        widget = overlayer.TextBubble("testing msg!", tailpos=(10,-20))
+        widget.exposition_count = 0
+        # override draw method
+        def counter(ctx, self=widget):
+            self.exposition_count += 1
+            self.real_exposer(ctx)
+        widget.real_exposer = widget.draw_with_context
+        widget.draw_with_context = counter
+        # centering allows to test the blending with the label
+        overlay.put(widget, 50, 50)
+        widget.show()
+        assert widget.no_expose, \
+            "Overlay should overide exposition handling of widget"
+        assert not lbl.no_expose, \
+            "Non-overlayed cairo should expose as usual"
+
+        # force widget realization
+        # the child is flagged to be redrawn, the overlay should redraw too.
+        win.set_default_size(100, 100)
+        win.show()
+
+        while gtk.events_pending():
+            gtk.main_iteration(block=False)
+        # visual validation: there should be 2 visible bubbles, one as label,
+        # one as overlay
+        import time
+        time.sleep(1)
+        # as x11 events are asynchronous, wait a bit before assuming it went
+        # wrong.
+        while gtk.events_pending():
+            gtk.main_iteration(block=False)
+        assert widget.exposition_count>0, "overlay widget should expose"
+
+
+if __name__ == "__main__":
+    unittest.main()
--
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