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+#
+# BitBake Tests for Copy-on-Write (cow.py)
+#
+# Copyright 2006 Holger Freyther <freyther@handhelds.org>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+
+import unittest
+import os
+
+class COWTestCase(unittest.TestCase):
+ """
+ Test case for the COW module from mithro
+ """
+
+ def testGetSet(self):
+ """
+ Test and set
+ """
+ from bb.COW import COWDictBase
+ a = COWDictBase.copy()
+
+ self.assertEquals(False, a.has_key('a'))
+
+ a['a'] = 'a'
+ a['b'] = 'b'
+ self.assertEquals(True, a.has_key('a'))
+ self.assertEquals(True, a.has_key('b'))
+ self.assertEquals('a', a['a'] )
+ self.assertEquals('b', a['b'] )
+
+ def testCopyCopy(self):
+ """
+ Test the copy of copies
+ """
+
+ from bb.COW import COWDictBase
+
+ # create two COW dict 'instances'
+ b = COWDictBase.copy()
+ c = COWDictBase.copy()
+
+ # assign some keys to one instance, some keys to another
+ b['a'] = 10
+ b['c'] = 20
+ c['a'] = 30
+
+ # test separation of the two instances
+ self.assertEquals(False, c.has_key('c'))
+ self.assertEquals(30, c['a'])
+ self.assertEquals(10, b['a'])
+
+ # test copy
+ b_2 = b.copy()
+ c_2 = c.copy()
+
+ self.assertEquals(False, c_2.has_key('c'))
+ self.assertEquals(10, b_2['a'])
+
+ b_2['d'] = 40
+ self.assertEquals(False, c_2.has_key('d'))
+ self.assertEquals(True, b_2.has_key('d'))
+ self.assertEquals(40, b_2['d'])
+ self.assertEquals(False, b.has_key('d'))
+ self.assertEquals(False, c.has_key('d'))
+
+ c_2['d'] = 30
+ self.assertEquals(True, c_2.has_key('d'))
+ self.assertEquals(True, b_2.has_key('d'))
+ self.assertEquals(30, c_2['d'])
+ self.assertEquals(40, b_2['d'])
+ self.assertEquals(False, b.has_key('d'))
+ self.assertEquals(False, c.has_key('d'))
+
+ # test copy of the copy
+ c_3 = c_2.copy()
+ b_3 = b_2.copy()
+ b_3_2 = b_2.copy()
+
+ c_3['e'] = 4711
+ self.assertEquals(4711, c_3['e'])
+ self.assertEquals(False, c_2.has_key('e'))
+ self.assertEquals(False, b_3.has_key('e'))
+ self.assertEquals(False, b_3_2.has_key('e'))
+ self.assertEquals(False, b_2.has_key('e'))
+
+ b_3['e'] = 'viel'
+ self.assertEquals('viel', b_3['e'])
+ self.assertEquals(4711, c_3['e'])
+ self.assertEquals(False, c_2.has_key('e'))
+ self.assertEquals(True, b_3.has_key('e'))
+ self.assertEquals(False, b_3_2.has_key('e'))
+ self.assertEquals(False, b_2.has_key('e'))
+
+ def testCow(self):
+ from bb.COW import COWDictBase
+ c = COWDictBase.copy()
+ c['123'] = 1027
+ c['other'] = 4711
+ c['d'] = { 'abc' : 10, 'bcd' : 20 }
+
+ copy = c.copy()
+
+ self.assertEquals(1027, c['123'])
+ self.assertEquals(4711, c['other'])
+ self.assertEquals({'abc':10, 'bcd':20}, c['d'])
+ self.assertEquals(1027, copy['123'])
+ self.assertEquals(4711, copy['other'])
+ self.assertEquals({'abc':10, 'bcd':20}, copy['d'])
+
+ # cow it now
+ copy['123'] = 1028
+ copy['other'] = 4712
+ copy['d']['abc'] = 20
+
+
+ self.assertEquals(1027, c['123'])
+ self.assertEquals(4711, c['other'])
+ self.assertEquals({'abc':10, 'bcd':20}, c['d'])
+ self.assertEquals(1028, copy['123'])
+ self.assertEquals(4712, copy['other'])
+ self.assertEquals({'abc':20, 'bcd':20}, copy['d'])