1 files changed, 37 insertions, 0 deletions

diff --git a/test/sca/test_sampling.py b/test/sca/test_sampling.py
new file mode 100644
index 0000000..75a227d
--- /dev/null
+++ b/test/sca/test_sampling.py
@@ -0,0 +1,37 @@
+from unittest import TestCase
+
+import numpy as np
+from pyecsca.sca import Trace, downsample_average, downsample_pick, downsample_decimate
+from .utils import plot
+
+
+class SamplingTests(TestCase):
+
+    def setUp(self):
+        self._trace = Trace(None, None, np.array([20, 40, 50, 50, 10], dtype=np.dtype("i1")))
+
+    def test_downsample_average(self):
+        result = downsample_average(self._trace, 2)
+        self.assertIsNotNone(result)
+        self.assertIsInstance(result, Trace)
+        self.assertEqual(len(result.samples), 2)
+        self.assertEqual(result.samples[0], 30)
+        self.assertEqual(result.samples[1], 50)
+
+    def test_downsample_pick(self):
+        result = downsample_pick(self._trace, 2)
+        self.assertIsNotNone(result)
+        self.assertIsInstance(result, Trace)
+        self.assertEqual(len(result.samples), 3)
+        self.assertEqual(result.samples[0], 20)
+        self.assertEqual(result.samples[1], 50)
+
+    def test_downsample_decimate(self):
+        trace = Trace(None, None, np.array([20, 30, 55, 18, 15, 10, 35, 24, 21, 15, 10, 8, -10, -5,
+                                            -8, -12, -15, -18, -34, -21, -17, -10, -5, -12, -6, -2,
+                                            4, 8, 21, 28], dtype=np.dtype("i1")))
+        result = downsample_decimate(trace, 2)
+        self.assertIsNotNone(result)
+        self.assertIsInstance(result, Trace)
+        self.assertEqual(len(result.samples), 15)
+        plot(self, trace, result)