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from unittest import TestCase
import numpy as np
from pyecsca.sca import Trace, CombinedTrace, average, conditional_average, standard_deviation
class CombineTests(TestCase):
def setUp(self):
self.a = Trace(None, b"\xff", np.array([20, 80], dtype=np.dtype("i1")))
self.b = Trace(None, b"\xff", np.array([30, 42], dtype=np.dtype("i1")))
self.c = Trace(None, b"\x00", np.array([78, 56], dtype=np.dtype("i1")))
def test_average(self):
self.assertIsNone(average())
result = average(self.a, self.b)
self.assertIsNotNone(result)
self.assertIsInstance(result, CombinedTrace)
self.assertEqual(len(result.samples), 2)
self.assertEqual(result.samples[0], 25)
self.assertEqual(result.samples[1], 61)
def test_conditional_average(self):
result = conditional_average(self.a, self.b, self.c,
condition=lambda trace: trace.data[0] == 0xff)
self.assertIsInstance(result, CombinedTrace)
self.assertEqual(len(result.samples), 2)
self.assertEqual(result.samples[0], 25)
self.assertEqual(result.samples[1], 61)
def test_standard_deviation(self):
self.assertIsNone(standard_deviation())
result = standard_deviation(self.a, self.b)
self.assertIsInstance(result, CombinedTrace)
self.assertEqual(len(result.samples), 2)
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