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from __future__ import division, absolute_import, print_function

import platform
import pytest

import numpy as np
from numpy.testing import assert_, assert_raises


class TestErrstate(object):
    @pytest.mark.skipif(platform.machine() == "armv5tel", reason="See gh-413.")
    def test_invalid(self):
        with np.errstate(all='raise', under='ignore'):
            a = -np.arange(3)
            # This should work
            with np.errstate(invalid='ignore'):
                np.sqrt(a)
            # While this should fail!
            with assert_raises(FloatingPointError):
                np.sqrt(a)

    def test_divide(self):
        with np.errstate(all='raise', under='ignore'):
            a = -np.arange(3)
            # This should work
            with np.errstate(divide='ignore'):
                a // 0
            # While this should fail!
            with assert_raises(FloatingPointError):
                a // 0

    def test_errcall(self):
        def foo(*args):
            print(args)

        olderrcall = np.geterrcall()
        with np.errstate(call=foo):
            assert_(np.geterrcall() is foo, 'call is not foo')
            with np.errstate(call=None):
                assert_(np.geterrcall() is None, 'call is not None')
        assert_(np.geterrcall() is olderrcall, 'call is not olderrcall')