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import posixpath
import zipfile
import pytest
from installer.records import parse_record_file
from installer.sources import WheelFile, WheelSource
class TestWheelSource:
def test_takes_two_arguments(self):
WheelSource("distribution", "version")
WheelSource(distribution="distribution", version="version")
def test_correctly_computes_properties(self):
source = WheelSource(distribution="distribution", version="version")
assert source.data_dir == "distribution-version.data"
assert source.dist_info_dir == "distribution-version.dist-info"
def test_raises_not_implemented_error(self):
source = WheelSource(distribution="distribution", version="version")
with pytest.raises(NotImplementedError):
source.dist_info_filenames
with pytest.raises(NotImplementedError):
source.read_dist_info("METADATA")
with pytest.raises(NotImplementedError):
source.get_contents()
class TestWheelFile:
def test_rejects_not_okay_name(self, tmp_path):
# Create an empty zipfile
path = tmp_path / "not_a_valid_name.whl"
with zipfile.ZipFile(str(path), "w"):
pass
with pytest.raises(ValueError, match="Not a valid wheel filename: .+"):
with WheelFile.open(str(path)):
pass
def test_provides_correct_dist_info_filenames(self, fancy_wheel):
with WheelFile.open(fancy_wheel) as source:
assert sorted(source.dist_info_filenames) == [
"METADATA",
"RECORD",
"WHEEL",
"entry_points.txt",
"top_level.txt",
]
def test_correctly_reads_from_dist_info_files(self, fancy_wheel):
files = {}
with zipfile.ZipFile(fancy_wheel) as archive:
for file in archive.namelist():
if ".dist-info" not in file:
continue
files[posixpath.basename(file)] = archive.read(file).decode("utf-8")
got_files = {}
with WheelFile.open(fancy_wheel) as source:
for file in files:
got_files[file] = source.read_dist_info(file)
assert got_files == files
def test_provides_correct_contents(self, fancy_wheel):
# Know the contents of the wheel
files = {}
with zipfile.ZipFile(fancy_wheel) as archive:
for file in archive.namelist():
if file[-1:] == "/":
continue
files[file] = archive.read(file)
expected_record_lines = (
files["fancy-1.0.0.dist-info/RECORD"].decode("utf-8").splitlines()
)
expected_records = list(parse_record_file(expected_record_lines))
# Check that the object's output is appropriate
got_records = []
got_files = {}
with WheelFile.open(fancy_wheel) as source:
for record_elements, stream, is_executable in source.get_contents():
got_records.append(record_elements)
got_files[record_elements[0]] = stream.read()
assert not is_executable
assert sorted(got_records) == sorted(expected_records)
assert got_files == files
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