test Image(retina=True)

IPython/core/tests/test_display.py

@@ -1,38 +1,56 b''
 #-----------------------------------------------------------------------------
 #  Copyright (C) 2010-2011 The IPython Development Team.
 #
 #  Distributed under the terms of the BSD License.
 #
 #  The full license is in the file COPYING.txt, distributed with this software.
 #-----------------------------------------------------------------------------
 import os
 
 import nose.tools as nt
 
 from IPython.core import display
 from IPython.utils import path as ipath
 
 def test_image_size():
     """Simple test for display.Image(args, width=x,height=y)"""
     thisurl = 'http://www.google.fr/images/srpr/logo3w.png'
     img = display.Image(url=thisurl, width=200, height=200)
     nt.assert_equal(u'<img src="%s" width="200" height="200"/>' % (thisurl), img._repr_html_())
     img = display.Image(url=thisurl, width=200)
     nt.assert_equal(u'<img src="%s" width="200"/>' % (thisurl), img._repr_html_())
     img = display.Image(url=thisurl)
     nt.assert_equal(u'<img src="%s"/>' % (thisurl), img._repr_html_())
 
+def test_retina_png():
+    here = os.path.dirname(__file__)
+    img = display.Image(os.path.join(here, "2x2.png"), retina=True)
+    nt.assert_equal(img.height, 1)
+    nt.assert_equal(img.width, 1)
+    data, md = img._repr_png_()
+    nt.assert_equal(md['width'], 1)
+    nt.assert_equal(md['height'], 1)
+
+def test_retina_jpeg():
+    here = os.path.dirname(__file__)
+    img = display.Image(os.path.join(here, "2x2.jpg"), retina=True)
+    nt.assert_equal(img.height, 1)
+    nt.assert_equal(img.width, 1)
+    data, md = img._repr_jpeg_()
+    nt.assert_equal(md['width'], 1)
+    nt.assert_equal(md['height'], 1)
+
 def test_image_filename_defaults():
     '''test format constraint, and validity of jpeg and png'''
     tpath = ipath.get_ipython_package_dir()
     nt.assert_raises(ValueError, display.Image, filename=os.path.join(tpath, 'testing/tests/badformat.gif'),
                      embed=True)
     nt.assert_raises(ValueError, display.Image)
     nt.assert_raises(ValueError, display.Image, data='this is not an image', format='badformat', embed=True)
     imgfile = os.path.join(tpath, 'frontend/html/notebook/static/base/images/ipynblogo.png')
     img = display.Image(filename=imgfile)
     nt.assert_equal('png', img.format)
     nt.assert_is_not_none(img._repr_png_())
     img = display.Image(filename=os.path.join(tpath, 'testing/tests/logo.jpg'), embed=False)
     nt.assert_equal('jpeg', img.format)
     nt.assert_is_none(img._repr_jpeg_())