2 # vi:si:et:sw=4:sts=4:ts=4
4 # gst-python - Python bindings for GStreamer
5 # Copyright (C) 2007 Johan Dahlin
7 # This library is free software; you can redistribute it and/or
8 # modify it under the terms of the GNU Lesser General Public
9 # License as published by the Free Software Foundation; either
10 # version 2.1 of the License, or (at your option) any later version.
12 # This library is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 # Lesser General Public License for more details.
17 # You should have received a copy of the GNU Lesser General Public
18 # License along with this library; if not, write to the Free Software
19 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 from common import TestCase
26 from gi.repository import Gst
31 class TestFraction(TestCase):
32 def testConstructor(self):
36 self.assertEquals(frac.num, 1)
37 self.assertEquals(frac.denom, 2)
40 self.assertEquals(frac.num, 1)
41 self.assertEquals(frac.denom, 1)
43 self.assertRaises(TypeError, F)
48 self.assertEquals(repr(F(1, 2)), '<Gst.Fraction 1/2>')
54 self.assertEquals(frac, frac)
55 self.assertEquals(F(1, 2), F(1, 2))
56 self.assertEquals(F(2, 4), F(1, 2))
58 self.assertNotEquals(F(1, 3), F(1, 2))
59 self.assertNotEquals(F(2, 1), F(1, 2))
64 self.assertEquals(F(1, 2) * F(1, 2), F(1, 4))
65 self.assertEquals(F(2, 3) * F(4, 5), F(8, 15))
66 self.assertEquals(F(1, 3) * F(4), F(4, 3))
67 self.assertEquals(F(1, 3) * 4, F(4, 3))
72 self.assertEquals(2 * F(1, 2), F(1))
73 self.assertEquals(4 * F(1, 2), F(2))
74 self.assertEquals(-10 * F(1, 2), F(-5))
79 self.assertEquals(F(1, 3) / F(1, 4), F(4, 3))
80 self.assertEquals(F(2, 3) / F(4, 5), F(10, 12))
82 self.assertEquals(F(1, 3) / F(4), F(1, 12))
83 self.assertEquals(F(1, 3) / 4, F(1, 12))
84 self.assertEquals(F(1, 3) / 2, F(1, 6))
85 self.assertEquals(F(1, 5) / -4, F(1, -20))
90 self.assertEquals(2 / F(1, 3), F(6, 1))
91 self.assertEquals(-4 / F(1, 5), F(-20, 1))
96 self.assertEquals(float(F(1, 2)), 0.5)
98 def testPropertyMarshalling(self):
101 obj = Gst.ElementFactory.make("videoparse")
103 # no videoparse and I don't know of any elements in core or -base using
104 # fraction properties. Skip this test.
107 value = obj.props.framerate
108 self.failUnlessEqual(value.num, 25)
109 self.failUnlessEqual(value.denom, 1)
111 obj.props.framerate = Gst.Fraction(2, 1)
112 value = obj.props.framerate
113 self.failUnlessEqual(value.num, 2)
114 self.failUnlessEqual(value.denom, 1)
117 obj.props.framerate = 1
118 self.failUnlessRaises(TypeError, bad)
120 value = obj.props.framerate
121 self.failUnlessEqual(value.num, 2)
122 self.failUnlessEqual(value.denom, 1)
124 def testGetFractionValue(self):
127 st = Gst.Structure.from_string("video/x-raw,framerate=10/1")[0]
128 value = st["framerate"]
130 self.failUnlessEqual(value.num, 10)
131 self.failUnlessEqual(value.denom, 1)