#!python
# vim: encoding=latin1 ts=8 sts=4 et si sw=4 ft=python
"""
Test ranges module on pool of float values
"""

VERSION = '.'.join(map(str,
                       (0,
                        1,
                        )))

import unittest
from ranges import *

POOL = (0.0, 0.4, 0.8, 1.2, 1.6, 2.0, 2.4, 2.8, 3.2, 3.6)

class Testcase_working_semicolon(unittest.TestCase):
    """
    Testcase for correct expressions without commas.

    For float values, only range operations make sense, since
    floats are not enumerable
    """

    known_values = (
        ('1 to 3',
         (1.2, 1.6, 2.0, 2.4, 2.8,),
         '1 <= x <= 3'),
        ('1.0 to 3.0',
         (1.2, 1.6, 2.0, 2.4, 2.8,),
         '1.0 <= x <= 3.0'),
        )

    def test_knownvalues(self):
        "filter functions yield predicted subsets"
        for expr, predicted, pyex in self.known_values:
            eo = make_expression(expr)
            res = filter(eo.filter_func(), POOL)
            self.assertEqual(res, predicted)

    def test_python_expressions(self):
        "Expression objects yield predicted Python expressions"
        for expr, predicted, pyex in self.known_values:
            eo = make_expression(expr)
            self.assertEqual(pyex, eo.python_expression())




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