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"""Regression tests for optimize.
"""
from numpy.testing import TestCase, run_module_suite, assert_almost_equal
import scipy.optimize
class TestRegression(TestCase):
def test_newton_x0_is_0(self):
"""Ticket #1074"""
tgt = 1
res = scipy.optimize.newton(lambda x: x - 1, 0)
assert_almost_equal(res, tgt)
def test_newton_integers(self):
"""Ticket #1214"""
root = scipy.optimize.newton(lambda x: x**2 - 1, x0=2,
fprime=lambda x: 2*x)
assert_almost_equal(root, 1.0)
if __name__ == "__main__":
run_module_suite()
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