#!/usr/bin/python

'''Test cases for Complex class'''

import sys
import unittest

import sample
from sample import Point

class ComplexTest(unittest.TestCase):
    '''Test case for conversions between C++ Complex class to Python complex class'''

    def testFunctionReturningComplexObject(self):
        '''Test function returning a C++ Complex object.'''
        cpx = sample.transmutePointIntoComplex(Point(5.0, 2.3))
        self.assertEqual(cpx, complex(5.0, 2.3))

    def testFunctionReceivingComplexObjectAsArgument(self):
        '''Test function returning a C++ Complex object.'''
        pt = sample.transmuteComplexIntoPoint(complex(1.2, 3.4))
        # these assertions intentionally avoids to test the == operator,
        # it should have its own test cases.
        self.assertEqual(pt.x(), 1.2)
        self.assertEqual(pt.y(), 3.4)

    def testComplexList(self):
        '''Test list of C++ Complex objects conversion to a list of Python complex objects.'''
        # the global function gimmeComplexList() is expected to return a list
        # containing the following Complex values: [0j, 1.1+2.2j, 1.3+2.4j]
        cpxlist = sample.gimmeComplexList()
        self.assertEqual(cpxlist, [complex(), complex(1.1, 2.2), complex(1.3, 2.4)])

    def testSumComplexPair(self):
        '''Test sum of a tuple containing two complex objects.'''
        cpx1 = complex(1.2, 3.4)
        cpx2 = complex(5.6, 7.8)
        self.assertEqual(sample.sumComplexPair((cpx1, cpx2)), cpx1 + cpx2)

if __name__ == '__main__':
    unittest.main()