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#!/usr/bin/python
'''Test cases for Derived class'''
import sys
import unittest
import sample
from sample import Abstract, Derived, PolymorphicFuncEnum
class Deviant(Derived):
def __init__(self):
Derived.__init__(self)
self.pure_virtual_called = False
self.unpure_virtual_called = False
def pureVirtual(self):
self.pure_virtual_called = True
def unpureVirtual(self):
self.unpure_virtual_called = True
def className(self):
return 'Deviant'
class DerivedTest(unittest.TestCase):
'''Test case for Derived class'''
def testParentClassMethodsAvailability(self):
'''Test if Derived class really inherits its methods from parent.'''
inherited_methods = set(['callPureVirtual', 'callUnpureVirtual',
'id_', 'pureVirtual', 'unpureVirtual'])
self.assert_(inherited_methods.issubset(dir(Derived)))
def testPolymorphicMethodCall(self):
'''Test if the correct polymorphic method is being called.'''
derived = Derived()
result = derived.polymorphic(1, 2)
self.assertEqual(type(result), PolymorphicFuncEnum)
self.assertEqual(result, sample.PolymorphicFunc_ii)
result = derived.polymorphic(3)
self.assertEqual(type(result), PolymorphicFuncEnum)
self.assertEqual(result, sample.PolymorphicFunc_ii)
result = derived.polymorphic(4.4)
self.assertEqual(type(result), PolymorphicFuncEnum)
self.assertEqual(result, sample.PolymorphicFunc_d)
def testOtherPolymorphicMethodCall(self):
'''Another test to check polymorphic method calling, just to double check.'''
derived = Derived()
result = derived.otherPolymorphic(1, 2, True, 3.3)
self.assertEqual(type(result), Derived.OtherPolymorphicFuncEnum)
self.assertEqual(result, sample.Derived.OtherPolymorphicFunc_iibd)
result = derived.otherPolymorphic(1, 2.2)
self.assertEqual(type(result), Derived.OtherPolymorphicFuncEnum)
self.assertEqual(result, Derived.OtherPolymorphicFunc_id)
def testPolymorphicMethodCallWithDifferentNumericTypes(self):
'''Test if the correct polymorphic method accepts a different numeric type as argument.'''
derived = Derived()
result = derived.polymorphic(1.1, 2.2)
self.assertEqual(type(result), PolymorphicFuncEnum)
self.assertEqual(result, sample.PolymorphicFunc_ii)
def testPolymorphicMethodCallWithWrongNumberOfArguments(self):
'''Test if a call to a polymorphic method with the wrong number of arguments raises an exception.'''
derived = Derived()
self.assertRaises(TypeError, lambda : derived.otherPolymorphic(1, 2, True))
def testReimplementedPureVirtualMethodCall(self):
'''Test if a Python override of a implemented pure virtual method is correctly called from C++.'''
d = Deviant()
d.callPureVirtual()
self.assert_(d.pure_virtual_called)
def testReimplementedVirtualMethodCall(self):
'''Test if a Python override of a reimplemented virtual method is correctly called from C++.'''
d = Deviant()
d.callUnpureVirtual()
self.assert_(d.unpure_virtual_called)
def testVirtualMethodCallString(self):
'''Test virtual method call returning string.'''
d = Derived()
self.assertEqual(d.className(), 'Derived')
self.assertEqual(d.getClassName(), 'Derived')
def testReimplementedVirtualMethodCallReturningString(self):
'''Test if a Python override of a reimplemented virtual method is correctly called from C++.'''
d = Deviant()
self.assertEqual(d.className(), 'Deviant')
self.assertEqual(d.getClassName(), 'Deviant')
def testSingleArgument(self):
'''Test singleArgument call.'''
d = Derived()
self.assert_(d.singleArgument(False))
self.assert_(not d.singleArgument(True))
def testMethodCallWithDefaultValue(self):
'''Test method call with default value.'''
d = Derived()
self.assertEqual(d.defaultValue(3), 3.1)
self.assertEqual(d.defaultValue(), 0.1)
if __name__ == '__main__':
unittest.main()
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