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from caffe2.python import core
from hypothesis import given, settings
from hypothesis import strategies as st
import caffe2.python.hypothesis_test_util as hu
import caffe2.python.serialized_test.serialized_test_util as serial
import numpy as np
import unittest
class TestMathOps(serial.SerializedTestCase):
@given(X=hu.tensor(),
exponent=st.floats(min_value=2.0, max_value=3.0),
**hu.gcs)
def test_elementwise_power(self, X, exponent, gc, dc):
# negative integer raised with non-integer exponent is domain error
X = np.abs(X)
def powf(X):
return (X ** exponent,)
def powf_grad(g_out, outputs, fwd_inputs):
return (exponent * (fwd_inputs[0] ** (exponent - 1)) * g_out,)
op = core.CreateOperator(
"Pow", ["X"], ["Y"], exponent=exponent)
self.assertReferenceChecks(gc, op, [X], powf,
output_to_grad="Y",
grad_reference=powf_grad,
ensure_outputs_are_inferred=True)
@given(X=hu.tensor(),
exponent=st.floats(min_value=-3.0, max_value=3.0),
**hu.gcs)
@settings(deadline=10000)
def test_sign(self, X, exponent, gc, dc):
def signf(X):
return [np.sign(X)]
op = core.CreateOperator(
"Sign", ["X"], ["Y"])
self.assertReferenceChecks(
gc, op, [X], signf, ensure_outputs_are_inferred=True)
self.assertDeviceChecks(dc, op, [X], [0])
if __name__ == "__main__":
unittest.main()
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