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### pyhegp --- Homomorphic encryption of genotypes and phenotypes
### Copyright © 2025 Arun Isaac <arunisaac@systemreboot.net>
###
### This file is part of pyhegp.
###
### pyhegp is free software: you can redistribute it and/or modify it
### under the terms of the GNU General Public License as published by
### the Free Software Foundation, either version 3 of the License, or
### (at your option) any later version.
###
### pyhegp is distributed in the hope that it will be useful, but
### WITHOUT ANY WARRANTY; without even the implied warranty of
### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
### General Public License for more details.
###
### You should have received a copy of the GNU General Public License
### along with pyhegp. If not, see <https://www.gnu.org/licenses/>.
import tempfile
from hypothesis import given, strategies as st
from hypothesis.extra.numpy import arrays, array_shapes
from hypothesis.extra.pandas import column, columns, data_frames
import pandas as pd
from pytest import approx
from pyhegp.serialization import Summary, read_summary, write_summary, read_summary_headers, read_genotype, write_genotype, read_key, write_key
from pyhegp.utils import negate
tabless_printable_ascii_text = st.text(
# Exclude control characters and tab.
st.characters(codec="ascii",
exclude_categories=("Cc",),
exclude_characters=("\t",)),
min_size=1)
chromosome_column = column(name="chromosome",
dtype="str",
elements=tabless_printable_ascii_text)
position_column = column(name="position",
dtype="int")
reference_column = column(name="reference",
dtype="str",
elements=st.text(
st.characters(codec="ascii",
categories=(),
include_characters=("A", "G", "C", "T")),
min_size=1))
@st.composite
def summaries(draw):
return Summary(draw(st.integers()),
draw(data_frames(
columns=([chromosome_column, position_column]
+ ([reference_column] if draw(st.booleans()) else [])
+ columns(["mean", "std"],
dtype="float64",
elements=st.floats(allow_nan=False))))))
@given(summaries())
def test_read_write_summary_are_inverses(summary):
with tempfile.TemporaryFile() as file:
write_summary(file, summary)
file.seek(0)
recovered_summary = read_summary(file)
pd.testing.assert_frame_equal(summary.data,
recovered_summary.data)
assert summary.n == recovered_summary.n
@st.composite
def properties_and_whitespace(draw):
n = draw(st.integers(min_value=0, max_value=10))
return (draw(st.dictionaries(st.text(st.characters(codec="ascii",
exclude_categories=("Cc", "Zs")),
min_size=1)
.filter(lambda key: not key.startswith("#")),
st.text(st.characters(codec="ascii",
exclude_categories=("Cc",)),
min_size=1),
min_size=n, max_size=n)),
draw(st.integers(min_value=0, max_value=10)),
draw(st.lists(st.integers(min_value=0, max_value=10),
min_size=n, max_size=n)))
@given(properties_and_whitespace())
def test_read_summary_headers_variable_whitespace(properties_and_whitespace):
properties, header_whitespace, key_value_whitespace = properties_and_whitespace
with tempfile.TemporaryFile() as file:
file.write(b"#")
file.write(b" " * header_whitespace)
file.write(b"pyhegp summary file version 1\n")
for (key, value), key_value_whitespace in zip(properties.items(), key_value_whitespace):
file.write(b"#")
file.write(b" " * key_value_whitespace)
file.write(f"{key} {value}\n".encode("ascii"))
file.seek(0)
assert properties == read_summary_headers(file)
def genotype_reserved_column_name_p(name):
return name.lower() in {"chromosome", "position", "reference"}
sample_names = st.lists(tabless_printable_ascii_text
.filter(negate(genotype_reserved_column_name_p)),
unique=True)
@st.composite
def genotype_frames(draw):
return draw(data_frames(
columns=([chromosome_column, position_column]
+ ([reference_column] if draw(st.booleans()) else [])
+ columns(draw(sample_names),
dtype="float64",
elements=st.floats(allow_nan=False)))))
@given(genotype_frames())
def test_read_write_genotype_are_inverses(genotype):
with tempfile.TemporaryFile() as file:
write_genotype(file, genotype)
file.seek(0)
pd.testing.assert_frame_equal(genotype, read_genotype(file))
@given(arrays("float64",
array_shapes(min_dims=2, max_dims=2)))
def test_read_write_key_are_inverses(key):
with tempfile.TemporaryFile() as file:
write_key(file, key)
file.seek(0)
assert key == approx(read_key(file), nan_ok=True)
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