name : test_errstate.py import pytest import sysconfig import numpy as np from numpy.testing import assert_, assert_raises, IS_WASM # The floating point emulation on ARM EABI systems lacking a hardware FPU is # known to be buggy. This is an attempt to identify these hosts. It may not # catch all possible cases, but it catches the known cases of gh-413 and # gh-15562. hosttype = sysconfig.get_config_var('HOST_GNU_TYPE') arm_softfloat = False if hosttype is None else hosttype.endswith('gnueabi') class TestErrstate: @pytest.mark.skipif(IS_WASM, reason="fp errors don't work in wasm") @pytest.mark.skipif(arm_softfloat, reason='platform/cpu issue with FPU (gh-413,-15562)') 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) @pytest.mark.skipif(IS_WASM, reason="fp errors don't work in wasm") @pytest.mark.skipif(arm_softfloat, reason='platform/cpu issue with FPU (gh-15562)') 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 # As should this, see gh-15562 with assert_raises(FloatingPointError): a // a 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') def test_errstate_decorator(self): @np.errstate(all='ignore') def foo(): a = -np.arange(3) a // 0 foo()