Updated unit tests' imports.

1 files changed, 80 insertions, 0 deletions

diff --git a/test/rational.py b/test/rational.py
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+++ b/test/rational.py
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+# -*- coding: utf-8 -*-
+
+# ******************************************************************************
+#
+# Copyright (C) 2008-2009 Olivier Tilloy <olivier@tilloy.net>
+#
+# This file is part of the pyexiv2 distribution.
+#
+# pyexiv2 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.
+#
+# pyexiv2 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 pyexiv2; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, 5th Floor, Boston, MA 02110-1301 USA.
+#
+# Author: Olivier Tilloy <olivier@tilloy.net>
+#
+# ******************************************************************************
+
+import unittest
+
+from pyexiv2.utils import Rational
+
+
+class TestRational(unittest.TestCase):
+
+    def test_constructor(self):
+        r = Rational(2, 1)
+        self.assertEqual(r.numerator, 2)
+        self.assertEqual(r.denominator, 1)
+        self.assertRaises(ZeroDivisionError, Rational, 1, 0)
+
+    def test_read_only(self):
+        r = Rational(3, 4)
+        try:
+            r.numerator = 5
+        except AttributeError:
+            pass
+        else:
+            self.fail('Numerator is not read-only.')
+        try:
+            r.denominator = 5
+        except AttributeError:
+            pass
+        else:
+            self.fail('Denominator is not read-only.')
+
+    def test_from_string(self):
+        self.assertEqual(Rational.from_string('4/3'), Rational(4, 3))
+        self.assertEqual(Rational.from_string('-4/3'), Rational(-4, 3))
+        self.assertRaises(ValueError, Rational.from_string, '+3/5')
+        self.assertRaises(ValueError, Rational.from_string, '3 / 5')
+        self.assertRaises(ValueError, Rational.from_string, '3/-5')
+        self.assertRaises(ValueError, Rational.from_string, 'invalid')
+
+    def test_to_string(self):
+        self.assertEqual(str(Rational(3, 5)), '3/5')
+        self.assertEqual(str(Rational(-3, 5)), '-3/5')
+
+    def test_to_float(self):
+        self.assertEqual(Rational(3, 6).to_float(), 0.5)
+        self.assertEqual(Rational(11, 11).to_float(), 1.0)
+        self.assertEqual(Rational(-2, 8).to_float(), -0.25)
+        self.assertEqual(Rational(0, 3).to_float(), 0.0)
+
+    def test_equality(self):
+        r1 = Rational(2, 1)
+        r2 = Rational(2, 1)
+        r3 = Rational(8, 4)
+        r4 = Rational(3, 2)
+        self.assertEqual(r1, r2)
+        self.assertEqual(r1, r3)
+        self.assertNotEqual(r1, r4)