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t_keydict.py
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/
t_keydict.py
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"""Test KeyDict class"""
import unittest
import numpy as np
from gpkit import Variable, VectorVariable
import gpkit
from gpkit.keydict import KeyDict
from gpkit.tests.helpers import run_tests
class TestKeyDict(unittest.TestCase):
"""TestCase for the KeyDict class"""
def test_nonnumeric(self):
x = VectorVariable(2, "x")
kd = KeyDict()
kd[x[1]] = "2"
self.assertTrue(np.isnan(kd[x[0]]))
self.assertEqual(kd[x[1]], "2")
self.assertNotIn(x[0], kd)
self.assertIn(x[1], kd)
def test_setattr(self):
kd = KeyDict()
x = Variable("x", lineage=(("test", 0),))
kd[x] = 1
self.assertIn(x, kd)
self.assertEqual(set(kd), set([x.key]))
def test_getattr(self):
kd = KeyDict()
x = Variable("x", lineage=[("Motor", 0)])
kd[x] = 52
self.assertEqual(kd[x], 52)
self.assertEqual(kd[x.key], 52)
self.assertEqual(kd["x"], 52)
self.assertEqual(kd["Motor.x"], 52)
self.assertNotIn("x.Someothermodelname", kd)
def test_failed_getattr(self):
kd = KeyDict()
with self.assertRaises(KeyError):
_ = kd["waldo"]
# issue 893: failed __getitem__ caused state change
self.assertNotIn("waldo", kd)
waldo = Variable("waldo")
kd.update({waldo: 5})
res = kd["waldo"]
self.assertEqual(res, 5)
self.assertIn("waldo", kd)
def test_vector(self):
v = VectorVariable(3, "v")
kd = KeyDict()
kd[v] = np.array([2, 3, 4])
self.assertTrue(all(kd[v] == kd[v.key]))
self.assertTrue(all(kd["v"] == np.array([2, 3, 4])))
self.assertEqual(v[0].key.idx, (0,))
self.assertEqual(kd[v][0], kd[v[0]])
self.assertEqual(kd[v][0], 2)
kd[v[0]] = 6
self.assertEqual(kd[v][0], kd[v[0]])
self.assertEqual(kd[v][0], 6)
self.assertTrue(all(kd[v] == np.array([6, 3, 4])))
v = VectorVariable(3, "v", "m")
kd[v] = np.array([2, 3, 4])
if gpkit.units:
kd[v[0]] = gpkit.units("inch")
TESTS = [TestKeyDict]
if __name__ == "__main__": # pragma: no cover
run_tests(TESTS)