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pip/tests/functional/test_cache.py

246 lines
8.4 KiB
Python

import os
import shutil
from glob import glob
import pytest
@pytest.fixture
def cache_dir(script):
result = script.run(
'python', '-c',
'from pip._internal.locations import USER_CACHE_DIR;'
'print(USER_CACHE_DIR)'
)
return result.stdout.strip()
@pytest.fixture
def wheel_cache_dir(cache_dir):
return os.path.normcase(os.path.join(cache_dir, 'wheels'))
@pytest.fixture
def wheel_cache_files(wheel_cache_dir):
destination = os.path.join(wheel_cache_dir, 'arbitrary', 'pathname')
if not os.path.exists(destination):
return []
filenames = glob(os.path.join(destination, '*.whl'))
files = []
for filename in filenames:
files.append(os.path.join(destination, filename))
return files
@pytest.fixture
def populate_wheel_cache(wheel_cache_dir):
destination = os.path.join(wheel_cache_dir, 'arbitrary', 'pathname')
os.makedirs(destination)
files = [
('yyy-1.2.3', os.path.join(destination, 'yyy-1.2.3-py3-none-any.whl')),
('zzz-4.5.6', os.path.join(destination, 'zzz-4.5.6-py3-none-any.whl')),
('zzz-4.5.7', os.path.join(destination, 'zzz-4.5.7-py3-none-any.whl')),
('zzz-7.8.9', os.path.join(destination, 'zzz-7.8.9-py3-none-any.whl')),
]
for _name, filename in files:
with open(filename, 'w'):
pass
return files
@pytest.fixture
def empty_wheel_cache(wheel_cache_dir):
if os.path.exists(wheel_cache_dir):
shutil.rmtree(wheel_cache_dir)
def list_matches_wheel(wheel_name, result):
"""Returns True if any line in `result`, which should be the output of
a `pip cache list` call, matches `wheel_name`.
E.g., If wheel_name is `foo-1.2.3` it searches for a line starting with
`- foo-1.2.3-py3-none-any.whl `."""
lines = result.stdout.splitlines()
expected = ' - {}-py3-none-any.whl '.format(wheel_name)
return any(map(lambda l: l.startswith(expected), lines))
@pytest.fixture
def remove_matches_wheel(wheel_cache_dir):
"""Returns True if any line in `result`, which should be the output of
a `pip cache remove`/`pip cache purge` call, matches `wheel_name`.
E.g., If wheel_name is `foo-1.2.3`, it searches for a line equal to
`Removed <wheel cache dir>/arbitrary/pathname/foo-1.2.3-py3-none-any.whl`.
"""
def _remove_matches_wheel(wheel_name, result):
lines = result.stdout.splitlines()
wheel_filename = '{}-py3-none-any.whl'.format(wheel_name)
# The "/arbitrary/pathname/" bit is an implementation detail of how
# the `populate_wheel_cache` fixture is implemented.
path = os.path.join(
wheel_cache_dir, 'arbitrary', 'pathname', wheel_filename,
)
expected = 'Removed {}'.format(path)
return expected in lines
return _remove_matches_wheel
def test_cache_dir(script, cache_dir):
result = script.pip('cache', 'dir')
assert os.path.normcase(cache_dir) == result.stdout.strip()
def test_cache_dir_too_many_args(script, cache_dir):
result = script.pip('cache', 'dir', 'aaa', expect_error=True)
assert result.stdout == ''
# This would be `result.stderr == ...`, but pip prints deprecation
# warnings on Python 2.7, so we check if the _line_ is in stderr.
assert 'ERROR: Too many arguments' in result.stderr.splitlines()
@pytest.mark.usefixtures("populate_wheel_cache")
def test_cache_info(script, wheel_cache_dir, wheel_cache_files):
result = script.pip('cache', 'info')
assert 'Location: {}'.format(wheel_cache_dir) in result.stdout
num_wheels = len(wheel_cache_files)
assert 'Number of wheels: {}'.format(num_wheels) in result.stdout
@pytest.mark.usefixtures("populate_wheel_cache")
def test_cache_list(script):
"""Running `pip cache list` should return exactly what the
populate_wheel_cache fixture adds."""
result = script.pip('cache', 'list')
assert list_matches_wheel('yyy-1.2.3', result)
assert list_matches_wheel('zzz-4.5.6', result)
assert list_matches_wheel('zzz-4.5.7', result)
assert list_matches_wheel('zzz-7.8.9', result)
@pytest.mark.usefixtures("empty_wheel_cache")
def test_cache_list_with_empty_cache(script):
"""Running `pip cache list` with an empty cache should print
"Nothing cached." and exit."""
result = script.pip('cache', 'list')
assert result.stdout == "Nothing cached.\n"
def test_cache_list_too_many_args(script):
"""Passing `pip cache list` too many arguments should cause an error."""
script.pip('cache', 'list', 'aaa', 'bbb',
expect_error=True)
@pytest.mark.usefixtures("populate_wheel_cache")
def test_cache_list_name_match(script):
"""Running `pip cache list zzz` should list zzz-4.5.6, zzz-4.5.7,
zzz-7.8.9, but nothing else."""
result = script.pip('cache', 'list', 'zzz', '--verbose')
assert not list_matches_wheel('yyy-1.2.3', result)
assert list_matches_wheel('zzz-4.5.6', result)
assert list_matches_wheel('zzz-4.5.7', result)
assert list_matches_wheel('zzz-7.8.9', result)
@pytest.mark.usefixtures("populate_wheel_cache")
def test_cache_list_name_and_version_match(script):
"""Running `pip cache list zzz-4.5.6` should list zzz-4.5.6, but
nothing else."""
result = script.pip('cache', 'list', 'zzz-4.5.6', '--verbose')
assert not list_matches_wheel('yyy-1.2.3', result)
assert list_matches_wheel('zzz-4.5.6', result)
assert not list_matches_wheel('zzz-4.5.7', result)
assert not list_matches_wheel('zzz-7.8.9', result)
@pytest.mark.usefixtures("populate_wheel_cache")
def test_cache_remove_no_arguments(script):
"""Running `pip cache remove` with no arguments should cause an error."""
script.pip('cache', 'remove', expect_error=True)
def test_cache_remove_too_many_args(script):
"""Passing `pip cache remove` too many arguments should cause an error."""
script.pip('cache', 'remove', 'aaa', 'bbb',
expect_error=True)
@pytest.mark.usefixtures("populate_wheel_cache")
def test_cache_remove_name_match(script, remove_matches_wheel):
"""Running `pip cache remove zzz` should remove zzz-4.5.6 and zzz-7.8.9,
but nothing else."""
result = script.pip('cache', 'remove', 'zzz', '--verbose')
assert not remove_matches_wheel('yyy-1.2.3', result)
assert remove_matches_wheel('zzz-4.5.6', result)
assert remove_matches_wheel('zzz-4.5.7', result)
assert remove_matches_wheel('zzz-7.8.9', result)
@pytest.mark.usefixtures("populate_wheel_cache")
def test_cache_remove_name_and_version_match(script, remove_matches_wheel):
"""Running `pip cache remove zzz-4.5.6` should remove zzz-4.5.6, but
nothing else."""
result = script.pip('cache', 'remove', 'zzz-4.5.6', '--verbose')
assert not remove_matches_wheel('yyy-1.2.3', result)
assert remove_matches_wheel('zzz-4.5.6', result)
assert not remove_matches_wheel('zzz-4.5.7', result)
assert not remove_matches_wheel('zzz-7.8.9', result)
@pytest.mark.usefixtures("populate_wheel_cache")
def test_cache_purge(script, remove_matches_wheel):
"""Running `pip cache purge` should remove all cached wheels."""
result = script.pip('cache', 'purge', '--verbose')
assert remove_matches_wheel('yyy-1.2.3', result)
assert remove_matches_wheel('zzz-4.5.6', result)
assert remove_matches_wheel('zzz-4.5.7', result)
assert remove_matches_wheel('zzz-7.8.9', result)
@pytest.mark.usefixtures("populate_wheel_cache")
def test_cache_purge_too_many_args(script, wheel_cache_files):
"""Running `pip cache purge aaa` should raise an error and remove no
cached wheels."""
result = script.pip('cache', 'purge', 'aaa', '--verbose',
expect_error=True)
assert result.stdout == ''
# This would be `result.stderr == ...`, but pip prints deprecation
# warnings on Python 2.7, so we check if the _line_ is in stderr.
assert 'ERROR: Too many arguments' in result.stderr.splitlines()
# Make sure nothing was deleted.
for filename in wheel_cache_files:
assert os.path.exists(filename)
@pytest.mark.parametrize("command", ["info", "list", "remove", "purge"])
def test_cache_abort_when_no_cache_dir(script, command):
"""Running any pip cache command when cache is disabled should
abort and log an informative error"""
result = script.pip('cache', command, '--no-cache-dir',
expect_error=True)
assert result.stdout == ''
assert ('ERROR: pip cache commands can not function'
' since cache is disabled.' in result.stderr.splitlines())