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import os.path
import shutil
import tempfile
import numpy as np
import pytest
from importlib_resources import files, as_file
import test.data.sca
from pyecsca.sca import (
TraceSet,
InspectorTraceSet,
ChipWhispererTraceSet,
PickleTraceSet,
HDF5TraceSet,
Trace,
SampleCoding,
)
@pytest.fixture()
def example_traces():
return [
Trace(np.array([20, 40, 50, 50, 10], dtype=np.dtype("i1")), {"something": 5}),
Trace(np.array([1, 2, 3, 4, 5], dtype=np.dtype("i1"))),
Trace(np.array([6, 7, 8, 9, 10], dtype=np.dtype("i1"))),
]
@pytest.fixture()
def example_kwargs():
return {"num_traces": 3, "thingy": "abc"}
def test_create():
assert TraceSet() is not None
assert InspectorTraceSet() is not None
assert ChipWhispererTraceSet() is not None
assert PickleTraceSet() is not None
assert HDF5TraceSet() is not None
def test_repr(example_traces, tmp_path):
trs = InspectorTraceSet(
*example_traces, num_traces=len(example_traces), sample_coding=SampleCoding.Int8, num_samples=5, y_scale=1
)
r1 = repr(trs)
trs.write(tmp_path / "test.trs")
r2 = repr(InspectorTraceSet.read(tmp_path / "test.trs"))
assert r1
assert r2
cw = ChipWhispererTraceSet(*example_traces)
r1 = repr(cw)
assert r1
pickle = PickleTraceSet(*example_traces)
r1 = repr(pickle)
pickle.write(tmp_path / "test.pickle")
r2 = repr(PickleTraceSet.read(tmp_path / "test.pickle"))
assert r1 == r2
def test_trs_load_fname():
with as_file(files(test.data.sca).joinpath("example.trs")) as path:
result = InspectorTraceSet.read(path)
assert result is not None
assert result.global_title == "Example trace set"
assert len(result) == 10
assert len(list(result)) == 10
assert "InspectorTraceSet" in str(result)
assert result[0].trace_set is result
assert result.sampling_frequency == 12500000
def test_trs_load_file():
with files(test.data.sca).joinpath("example.trs").open("rb") as f:
assert InspectorTraceSet.read(f) is not None
def test_trs_load_bytes():
with files(test.data.sca).joinpath("example.trs").open("rb") as f:
assert InspectorTraceSet.read(f.read()) is not None
def test_trs_save():
with as_file(files(test.data.sca).joinpath("example.trs")) as path:
trace_set = InspectorTraceSet.read(path)
with tempfile.TemporaryDirectory() as dirname:
path = os.path.join(dirname, "out.trs")
trace_set.write(path)
assert os.path.exists(path)
assert InspectorTraceSet.read(path) is not None
def test_cw_load_fname():
with as_file(files(test.data.sca).joinpath("config_chipwhisperer_.cfg")) as path:
# This will not work if the test package is not on the file system directly.
result = ChipWhispererTraceSet.read(path)
assert result is not None
assert len(result) == 2
def test_pickle_load_fname():
with as_file(files(test.data.sca).joinpath("test.pickle")) as path:
result = PickleTraceSet.read(path)
assert result is not None
def test_pickle_load_file():
with files(test.data.sca).joinpath("test.pickle").open("rb") as f:
assert PickleTraceSet.read(f) is not None
def test_pickle_save(example_traces, example_kwargs):
trace_set = PickleTraceSet(*example_traces, **example_kwargs)
with tempfile.TemporaryDirectory() as dirname:
path = os.path.join(dirname, "out.pickle")
trace_set.write(path)
assert os.path.exists(path)
assert PickleTraceSet.read(path) is not None
def test_h5_load_fname():
with as_file(files(test.data.sca).joinpath("test.h5")) as path:
result = HDF5TraceSet.read(path)
assert result is not None
def test_h5_load_file():
with files(test.data.sca).joinpath("test.h5").open("rb") as f:
assert HDF5TraceSet.read(f) is not None
def test_h5_inplace():
with tempfile.TemporaryDirectory() as dirname, as_file(
files(test.data.sca).joinpath("test.h5")
) as orig_path:
path = os.path.join(dirname, "test.h5")
shutil.copy(orig_path, path)
trace_set = HDF5TraceSet.inplace(path)
assert trace_set is not None
test_trace = Trace(
np.array([4, 7], dtype=np.dtype("i1")), meta={"thing": "ring"}
)
other_trace = Trace(np.array([8, 7], dtype=np.dtype("i1")), meta={"a": "b"})
trace_set.append(test_trace)
assert len(trace_set) == 3
trace_set.append(other_trace)
trace_set.remove(other_trace)
assert len(trace_set) == 3
trace_set.save()
trace_set.close()
test_set = HDF5TraceSet.read(path)
assert test_set.get(2) == test_set[2]
assert np.array_equal(test_set[2].samples, test_trace.samples)
assert test_set[2].meta["thing"] == test_trace.meta["thing"]
assert test_set[2] == test_trace
def test_h5_save(example_traces, example_kwargs):
trace_set = HDF5TraceSet(*example_traces, **example_kwargs)
with tempfile.TemporaryDirectory() as dirname:
path = os.path.join(dirname, "out.h5")
trace_set.write(path)
assert os.path.exists(path)
assert HDF5TraceSet.read(path) is not None
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