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# Test methods with long descriptive names can omit docstrings
# pylint: disable=missing-docstring
import pickle
import unittest
import numpy as np
from Orange.data import Table, Domain, Value,\
DiscreteVariable, ContinuousVariable, StringVariable, TimeVariable
class TestValue(unittest.TestCase):
def test_pickling_discrete_values(self):
iris = Table('iris')
a = iris[0]['iris']
b = pickle.loads(pickle.dumps(a))
self.assertEqual(float(a), float(b))
self.assertEqual(a.value, b.value)
def test_pickling_string_values(self):
zoo = Table('zoo')
a = zoo[0]['name']
b = pickle.loads(pickle.dumps(a))
self.assertEqual(float(a), float(b))
self.assertEqual(a.value, b.value)
def test_compare_continuous(self):
auto = Table('housing')
acc1 = auto[0]['MEDV'] # 24.0
acc2 = auto[1]['MEDV'] # 21.6
self.assertTrue(acc1 > acc2)
self.assertTrue(acc1 >= 24.0)
self.assertFalse(acc1 != acc1)
def test_compare_discrete(self):
data = Table(Domain([DiscreteVariable(name="G", values=("M", "F"))]),
np.array([[0], [1]]))
self.assertTrue(data[0]['G'] < data[1]['G'])
self.assertTrue(data[0]['G'] >= data[0]['G'])
self.assertTrue(data[0]['G'] < 1)
self.assertTrue(data[0]['G'] < "F")
self.assertFalse(data[1]['G'] < "F")
def test_compare_string(self):
zoo = Table('zoo')
zoo1 = zoo[0]['name'] # aardvark
zoo2 = zoo[1]['name'] # antelope
self.assertTrue(zoo1 < zoo2)
self.assertTrue(zoo1 >= "aardvark")
def test_hash(self):
v = 1234.5
val = Value(ContinuousVariable("var"), v)
self.assertTrue(val == v and hash(val) == hash(v))
v = "test"
val = Value(StringVariable("var"), v)
self.assertTrue(val == v and hash(val) == hash(v))
v = 1234.5
val = Value(TimeVariable("var"), v)
self.assertTrue(val == v and hash(val) == hash(v))
val = Value(DiscreteVariable("var", ["red", "green", "blue"]), 1)
self.assertRaises(TypeError, hash, val)
def test_as_values(self):
x = ContinuousVariable("x")
values = Value._as_values(x, [0., 1., 2.]) # pylint: disable=protected-access
self.assertIsInstance(values[0], Value)
self.assertEqual(values[0], 0)
s = StringVariable("s")
values = Value._as_values(s, ["a", "b", ""]) # pylint: disable=protected-access
self.assertIsInstance(values[0], Value)
self.assertEqual(values[0], "a")
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