def pipe_output(read, write):
from os import environ
environ = environ.copy()
from subprocess import Popen
vupdate = Popen(
('venv-update', 'venv=', '--version'),
env=environ,
stdout=write,
close_fds=True,
)
from os import close
from testing.capture_subprocess import read_all
close(write)
result = read_all(read)
vupdate.wait()
result = result.decode('US-ASCII')
print(result)
uncolored = uncolor(result)
assert uncolored.startswith('> ')
# FIXME: Sometimes this is 'python -m', sometimes 'python2.7 -m'. Weird.
import virtualenv
assert uncolored.endswith('''
> virtualenv --version
%s
''' % virtualenv.__version__)
return result, uncolored
def test_conflicting_reqs(tmpdir):
tmpdir.chdir()
T.requirements('''
dependant_package
conflicting_package
''')
with pytest.raises(CalledProcessError) as excinfo:
T.venv_update()
assert excinfo.value.returncode == 1
out, err = excinfo.value.result
err = T.strip_coverage_warnings(err)
err = T.strip_pip_warnings(err)
assert err == (
"conflicting-package 1 has requirement many-versions-package<2, but you'll "
'have many-versions-package 3 which is incompatible.\n'
# TODO: do we still need to append our own error?
'Error: version conflict: many-versions-package 3 (venv/{}) '
'<-> many-versions-package<2 '
'(from conflicting_package->-r requirements.txt (line 3))\n'.format(
PYTHON_LIB, ))
out = T.uncolor(out)
assert_something_went_wrong(out)
assert_venv_marked_invalid(tmpdir.join('venv'))
def it_gives_the_same_python_version_as_we_started_with(tmpdir):
other_python = OtherPython()
with tmpdir.as_cwd():
requirements('')
# first simulate some unrelated use of venv-update
# this guards against statefulness in the venv-update scratch dir
venv_update('unrelated_venv', '--', '--version')
run('virtualenv', '--python', other_python.interpreter, 'venv')
initial_version = assert_python_version(other_python.version_prefix)
venv_update_symlink_pwd()
out, err = run('./venv/bin/python', 'venv_update.py')
assert err == ''
out = uncolor(out)
assert out.startswith('''\
> virtualenv
Keeping valid virtualenv from previous run.
> venv/bin/python -m pip.__main__ install pip-faster==%s
''' % __version__)
final_version = assert_python_version(other_python.version_prefix)
assert final_version == initial_version
def test_override_requirements_file(tmpdir):
tmpdir.chdir()
enable_coverage()
requirements('')
Path('.').ensure_dir('requirements.d').join('venv-update.txt').write('''\
venv-update==%s
pure_python_package
''' % __version__)
out, err = venv_update()
err = strip_pip_warnings(err)
assert err == ''
out = uncolor(out)
assert (
'\n> pip install --find-links=file://%s/home/.cache/pip-faster/wheelhouse -r requirements.d/venv-update.txt\n' % tmpdir
) in out
assert (
'\nSuccessfully installed pip-1.5.6 pure-python-package-0.2.0 venv-update-%s' % __version__
) in out
assert '\n Successfully uninstalled pure-python-package\n' in out
expected = '\n'.join((
'venv-update==%s' % __version__,
'wheel==0.29.0',
''
))
assert pip_freeze() == expected
def test_multiple_issues(tmpdir):
# Make it a bit worse. The output should show all three issues.
tmpdir.chdir()
T.requirements('flake8==2.2.5')
T.venv_update()
T.run('./virtualenv_run/bin/pip', 'uninstall', '--yes', 'pyflakes')
T.requirements('''
# flake8 2.2.5 requires mccabe>=0.2.1 and pep8>=1.5.7, so this isn't satisfiable
flake8==2.2.5
mccabe==0.2
pep8==1.0
''')
with pytest.raises(CalledProcessError) as excinfo:
T.venv_update()
assert excinfo.value.returncode == 1
out, err = excinfo.value.result
err = T.strip_coverage_warnings(err)
assert err == ''
out = T.uncolor(out)
assert '''
Cleaning up...
Error: version conflict: mccabe 0.2 <-> mccabe>=0.2.1 (from flake8==2.2.5 (from -r requirements.txt (line 3)))
Error: version conflict: pep8 1.0 <-> pep8>=1.5.7 (from flake8==2.2.5 (from -r requirements.txt (line 3)))
Error: unmet dependency: pyflakes>=0.8.1 (from flake8==2.2.5 (from -r requirements.txt (line 3)))
Something went wrong! Sending 'virtualenv_run' back in time, so make knows it's invalid.
''' in out
def test_circular_dependencies():
"""pip-faster should be able to install packages with circular
dependencies."""
venv = make_venv()
out, err = run(
venv.join('bin/pip-faster').strpath,
'install',
'-vv', # show debug logging
'circular-dep-a',
)
err = strip_pip_warnings(err)
assert err.strip() == (
'Circular dependency! circular-dep-a==1.0 '
'(from circular-dep-b==1.0->circular-dep-a)'
)
out = uncolor(out)
assert '''
tracing: circular-dep-a
already queued: circular-dep-b==1.0 (from circular-dep-a)
tracing: circular-dep-b==1.0 (from circular-dep-a)
''' in out
frozen_requirements = pip_freeze(str(venv)).split('\n')
assert 'circular-dep-a==1.0' in frozen_requirements
assert 'circular-dep-b==1.0' in frozen_requirements
def test_update_while_active(tmpdir):
tmpdir.chdir()
enable_coverage()
requirements('')
venv_update()
assert 'project-with-c' not in pip_freeze()
# An arbitrary small package: project_with_c
requirements('project_with_c')
venv_update_symlink_pwd()
out, err = run(
'sh', '-c',
'. venv/bin/activate && python venv_update.py venv= venv --python=venv/bin/python'
)
out = uncolor(out)
err = strip_pip_warnings(err)
assert err == ''
assert out.startswith('''\
> virtualenv venv --python=venv/bin/python
Keeping valid virtualenv from previous run.
''')
assert 'project-with-c' in pip_freeze()
def test_override_requirements_file(tmpdir):
tmpdir.chdir()
requirements('')
Path('.').ensure_dir('requirements.d').join('venv-update.txt').write('''\
pip-faster==%s
pure_python_package
''' % __version__)
out, err = venv_update()
err = strip_pip_warnings(err)
assert err == ''
out = uncolor(out)
assert ' '.join((
'\n> venv/bin/python -m pip.__main__ install',
'-r requirements.d/venv-update.txt\n',
)) in out
expected = ('\nSuccessfully installed pip-1.5.6 pip-faster-%s pure-python-package-0.2.0 virtualenv-1.11.6' % __version__)
assert expected in out
assert '\n Successfully uninstalled pure-python-package\n' in out
expected = '\n'.join((
'pip-faster==%s' % __version__,
'virtualenv==1.11.6',
'wheel==0.29.0',
''
))
assert pip_freeze() == expected
def test_cant_wheel_package(tmpdir):
with tmpdir.as_cwd():
enable_coverage(tmpdir)
requirements('cant-wheel-package\npure-python-package')
out, err = venv_update()
assert err == ''
out = uncolor(out)
# for unknown reasons, py27 has an extra line with four spaces in this output, where py26 does not.
out = out.replace('\n \n', '\n')
assert '''
----------------------------------------
Failed building wheel for cant-wheel-package
Running setup.py bdist_wheel for pure-python-package
Destination directory: %s/home/.cache/pip-faster/wheelhouse''' % tmpdir + '''
SLOW!! no wheel found after building (couldn't be wheeled?): cant-wheel-package (from -r requirements.txt (line 1))
Installing collected packages: cant-wheel-package, pure-python-package
Running setup.py install for cant-wheel-package
Could not find .egg-info directory in install record for cant-wheel-package (from -r requirements.txt (line 1))
Successfully installed cant-wheel-package pure-python-package
Cleaning up...
> pip uninstall --yes coverage coverage-enable-subprocess
''' in out # noqa
assert pip_freeze().startswith('cant-wheel-package==0.1.0\n')
def test_override_requirements_file(tmpdir):
tmpdir.chdir()
enable_coverage()
requirements('')
Path('.').join('requirements-bootstrap.txt').write('''\
venv-update==%s
pure_python_package
''' % __version__)
out, err = venv_update(
'bootstrap-deps=', '-r', 'requirements-bootstrap.txt',
)
err = strip_pip_warnings(err)
# pip>=10 doesn't complain about installing an empty requirements file.
assert err == ''
out = uncolor(out)
# installing venv-update may downgrade / upgrade pip
out = re.sub(' pip-[0-9.]+ ', ' ', out)
assert '\n> pip install -r requirements-bootstrap.txt\n' in out
assert (
'\nSuccessfully installed pure-python-package-0.2.1 venv-update-%s' % __version__
) in out
assert '\n Successfully uninstalled pure-python-package-0.2.1\n' in out
expected = '\n'.join((
'venv-update==' + __version__,
''
))
assert pip_freeze() == expected
def pipe_output(read, write):
from os import environ
environ = environ.copy()
environ['HOME'] = str(Path('.').realpath())
from subprocess import Popen
vupdate = Popen(
('venv-update', '--version'),
env=environ,
stdout=write,
close_fds=True,
)
from os import close
from testing.capture_subprocess import read_all
close(write)
result = read_all(read)
vupdate.wait()
result = result.decode('US-ASCII')
uncolored = uncolor(result)
assert uncolored.startswith('> ')
# FIXME: Sometimes this is 'python -m', sometimes 'python2.7 -m'. Weird.
assert uncolored.endswith('''\
-m virtualenv virtualenv_run --version
1.11.6
''')
return result, uncolored
def test_conflicting_reqs(tmpdir):
tmpdir.chdir()
T.requirements('''
# flake8 2.2.5 requires mccabe>=0.2.1, so this isn't satisfiable
flake8==2.2.5
mccabe==0.2
''')
with pytest.raises(CalledProcessError) as excinfo:
T.venv_update()
assert excinfo.value.returncode == 1
out, err = excinfo.value.result
err = T.strip_coverage_warnings(err)
assert err == ''
out = T.uncolor(out)
assert (
'''
Cleaning up...
Error: version conflict: mccabe 0.2 (virtualenv_run/%s)'''
''' <-> mccabe>=0.2.1 (from flake8==2.2.5 (from -r requirements.txt (line 3)))
Something went wrong! Sending 'virtualenv_run' back in time, so make knows it's invalid.
''' % PYTHON_LIB
) in out
def test_circular_dependencies(tmpdir):
"""pip-faster should be able to install packages with circular
dependencies."""
tmpdir.chdir()
venv = enable_coverage(tmpdir, 'venv')
pip = venv.join('bin/pip').strpath
run(pip, 'install', 'pip-faster==' + __version__)
out, err = run(
venv.join('bin/pip-faster').strpath,
'install',
'-vv', # show debug logging
'circular-dep-a',
)
assert err == ''
out = uncolor(out)
assert out.endswith('''
tracing: circular-dep-a
adding sub-requirement circular-dep-b==1.0 (from circular-dep-a)
tracing: circular-dep-b==1.0 (from circular-dep-a)
adding sub-requirement circular-dep-a==1.0 (from circular-dep-b==1.0->circular-dep-a)
already analyzed: circular-dep-b==1.0 (from circular-dep-a)
tracing: circular-dep-a==1.0 (from circular-dep-b==1.0->circular-dep-a)
Circular dependency! circular-dep-a==1.0 (from circular-dep-b==1.0->circular-dep-a)
''')
frozen_requirements = pip_freeze(str(venv)).split('\n')
assert 'circular-dep-a==1.0' in frozen_requirements
assert 'circular-dep-b==1.0' in frozen_requirements
def it_gives_the_same_python_version_as_we_started_with(tmpdir):
other_python = OtherPython()
with tmpdir.as_cwd():
requirements('')
# first simulate some unrelated use of venv-update
# this guards against statefulness in the venv-update scratch dir
venv_update('venv=', 'unrelated_venv', 'pip-command=', 'true')
run('virtualenv', '--python', other_python.interpreter, 'venv')
initial_version = assert_python_version(other_python.version_prefix)
venv_update_symlink_pwd()
out, err = run('./venv/bin/python', 'venv_update.py')
err = strip_pip_warnings(err)
assert err == ''
out = uncolor(out)
assert out.startswith('''\
> virtualenv venv
Keeping valid virtualenv from previous run.
> rm -rf venv/local
> pip install venv-update=={}
'''.format(__version__))
final_version = assert_python_version(other_python.version_prefix)
assert final_version == initial_version
def pipe_output(read, write):
from os import environ
environ = environ.copy()
from subprocess import Popen
vupdate = Popen(
('venv-update', 'venv=', '--version'),
env=environ,
stdout=write,
close_fds=True,
)
from os import close
from testing.capture_subprocess import read_all
close(write)
result = read_all(read)
vupdate.wait()
result = result.decode('US-ASCII')
print(result)
uncolored = uncolor(result)
assert uncolored.startswith('> ')
# FIXME: Sometimes this is 'python -m', sometimes 'python2.7 -m'. Weird.
import virtualenv
assert uncolored.endswith('''
> virtualenv --version
%s
''' % virtualenv.__version__)
return result, uncolored
def it_gives_the_same_python_version_as_we_started_with(tmpdir):
other_python = OtherPython()
with tmpdir.as_cwd():
requirements('')
# first simulate some unrelated use of venv-update
# this guards against statefulness in the venv-update scratch dir
venv_update('venv=', 'unrelated_venv', 'pip-command=', 'true')
run('virtualenv', '--python', other_python.interpreter, 'venv')
initial_version = assert_python_version(other_python.version_prefix)
venv_update_symlink_pwd()
out, err = run('./venv/bin/python', 'venv_update.py')
err = strip_pip_warnings(err)
assert err == ''
out = uncolor(out)
assert out.startswith('''\
> virtualenv venv
Keeping valid virtualenv from previous run.
> rm -rf venv/local
> pip install venv-update=={}
'''.format(__version__))
final_version = assert_python_version(other_python.version_prefix)
assert final_version == initial_version
def test_override_requirements_file(tmpdir):
tmpdir.chdir()
enable_coverage()
requirements('')
Path('.').join('requirements-bootstrap.txt').write('''\
venv-update==%s
pure_python_package
''' % __version__)
out, err = venv_update(
'bootstrap-deps=',
'-r',
'requirements-bootstrap.txt',
)
err = strip_pip_warnings(err)
assert err == ('You must give at least one requirement to install '
'(see "pip help install")\n')
out = uncolor(out)
assert '\n> pip install -r requirements-bootstrap.txt\n' in out
assert (
'\nSuccessfully installed pure-python-package-0.2.1 venv-update-%s' %
__version__) in out
assert '\n Successfully uninstalled pure-python-package-0.2.1\n' in out
expected = '\n'.join(
('appdirs==1.4.0', 'packaging==16.8', 'pip==9.0.1',
'pyparsing==2.1.10', 'setuptools==34.1.1', 'six==1.10.0',
'venv-update==' + __version__, 'wheel==0.29.0', ''))
assert pip_freeze() == expected
def test_conflicting_reqs(tmpdir):
tmpdir.chdir()
T.requirements('''
dependant_package
conflicting_package
''')
with pytest.raises(CalledProcessError) as excinfo:
T.venv_update()
assert excinfo.value.returncode == 1
out, err = excinfo.value.result
err = T.strip_coverage_warnings(err)
err = T.strip_pip_warnings(err)
assert err == ''
out = T.uncolor(out)
assert (
'''
Cleaning up...
Error: version conflict: many-versions-package 3 (venv/%s)'''
''' <-> many-versions-package<2 (from conflicting-package->-r requirements.txt (line 3))
Storing debug log for failure in %s/home/.pip/pip.log
Something went wrong! Sending 'venv' back in time, so make knows it's invalid.
''' % (PYTHON_LIB, tmpdir)) in out
assert_venv_marked_invalid(tmpdir.join('venv'))
def test_conflicting_reqs(tmpdir):
tmpdir.chdir()
T.requirements('''
dependant_package
conflicting_package
''')
with pytest.raises(CalledProcessError) as excinfo:
T.venv_update()
assert excinfo.value.returncode == 1
out, err = excinfo.value.result
err = T.strip_coverage_warnings(err)
err = T.strip_pip_warnings(err)
assert err == (
"conflicting-package 1 has requirement many-versions-package<2, but you'll "
'have many-versions-package 3 which is incompatible.\n'
# TODO: do we still need to append our own error?
'Error: version conflict: many-versions-package 3 (venv/{}) '
'<-> many-versions-package<2 '
'(from conflicting_package->-r requirements.txt (line 3))\n'.format(
PYTHON_LIB,
)
)
out = T.uncolor(out)
assert_something_went_wrong(out)
assert_venv_marked_invalid(tmpdir.join('venv'))
def test_conflicting_reqs(tmpdir):
tmpdir.chdir()
T.requirements('''
dependant_package
conflicting_package
''')
with pytest.raises(CalledProcessError) as excinfo:
T.venv_update()
assert excinfo.value.returncode == 1
out, err = excinfo.value.result
err = T.strip_coverage_warnings(err)
err = T.strip_pip_warnings(err)
assert err == ''
out = T.uncolor(out)
assert (
'''
Cleaning up...
Error: version conflict: many-versions-package 3 (venv/%s)'''
''' <-> many-versions-package<2 (from conflicting-package->-r requirements.txt (line 3))
Storing debug log for failure in %s/home/.pip/pip.log
Something went wrong! Sending 'venv' back in time, so make knows it's invalid.
''' % (PYTHON_LIB, tmpdir)
) in out
assert_venv_marked_invalid(tmpdir.join('venv'))
def pipe_output(read, write):
from os import environ
environ = environ.copy()
environ['HOME'] = str(Path('.').realpath())
from subprocess import Popen
vupdate = Popen(
('venv-update', '--version'),
env=environ,
stdout=write,
close_fds=True,
)
from os import close
from testing.capture_subprocess import read_all
close(write)
result = read_all(read)
vupdate.wait()
result = result.decode('US-ASCII')
uncolored = uncolor(result)
assert uncolored.startswith('> ')
# FIXME: Sometimes this is 'python -m', sometimes 'python2.7 -m'. Weird.
assert uncolored.endswith('''\
-m virtualenv virtualenv_run --version
1.11.6
''')
return result, uncolored
def test_args_backward(tmpdir):
tmpdir.chdir()
enable_coverage()
requirements('')
with pytest.raises(CalledProcessError) as excinfo:
venv_update('venv=', 'requirements.txt')
# py26 doesn't have a consistent exit code:
# http://bugs.python.org/issue15033
assert excinfo.value.returncode != 0
out, err = excinfo.value.result
err = strip_coverage_warnings(err)
err = strip_pip_warnings(err)
assert err == ''
out = uncolor(out)
assert out.rsplit('\n', 4)[-4:] == [
'> virtualenv requirements.txt',
'ERROR: File already exists and is not a directory.',
'Please provide a different path or delete the file.',
'',
]
assert Path('requirements.txt').isfile()
assert Path('requirements.txt').read() == ''
assert not Path('myvenv').exists()
def test_override_requirements_file(tmpdir):
tmpdir.chdir()
enable_coverage()
requirements('')
Path('.').join('requirements-bootstrap.txt').write('''\
venv-update==%s
pure_python_package
''' % __version__)
out, err = venv_update(
'bootstrap-deps=', '-r', 'requirements-bootstrap.txt',
)
err = strip_pip_warnings(err)
# pip>=10 doesn't complain about installing an empty requirements file.
assert err == ''
out = uncolor(out)
assert '\n> pip install -r requirements-bootstrap.txt\n' in out
assert (
'\nSuccessfully installed pure-python-package-0.2.1 venv-update-%s' % __version__
) in out
assert '\n Successfully uninstalled pure-python-package-0.2.1\n' in out
expected = '\n'.join((
'venv-update==' + __version__,
''
))
assert pip_freeze() == expected
def test_circular_dependencies(tmpdir):
"""pip-faster should be able to install packages with circular
dependencies."""
tmpdir.chdir()
venv = enable_coverage(tmpdir, 'venv')
pip = venv.join('bin/pip').strpath
run(pip, 'install', 'pip-faster==' + __version__)
out, err = run(
venv.join('bin/pip-faster').strpath,
'install',
'-vv', # show debug logging
'circular-dep-a',
)
assert err == ''
out = uncolor(out)
assert out.endswith('''
tracing: circular-dep-a
adding sub-requirement circular-dep-b==1.0 (from circular-dep-a)
tracing: circular-dep-b==1.0 (from circular-dep-a)
adding sub-requirement circular-dep-a==1.0 (from circular-dep-b==1.0->circular-dep-a)
already analyzed: circular-dep-b==1.0 (from circular-dep-a)
tracing: circular-dep-a==1.0 (from circular-dep-b==1.0->circular-dep-a)
Circular dependency! circular-dep-a==1.0 (from circular-dep-b==1.0->circular-dep-a)
''')
frozen_requirements = pip_freeze(str(venv)).split('\n')
assert 'circular-dep-a==1.0' in frozen_requirements
assert 'circular-dep-b==1.0' in frozen_requirements
def it_can_handle_a_bad_findlink(tmpdir):
venv = tmpdir.join('venv')
install_coverage(venv)
pip = venv.join('bin/pip').strpath
run(pip, 'install', 'venv-update==' + __version__)
out, err = run(
str(venv.join('bin/pip-faster')),
'install', '-vvv',
'--find-links', 'git+wat://not/a/thing',
'pure-python-package',
)
out = uncolor(out)
err = strip_pip_warnings(err)
expected = '''\
Successfully built pure-python-package
Installing collected packages: pure-python-package
'''
assert expected in out
# Between this there's:
# 'changing mode of .../venv/bin/pure-python-script to 775'
# but that depends on umask
_, rest = out.split(expected)
expected2 = '''\
Successfully installed pure-python-package-0.2.1
Cleaning up...
'''
assert expected2 in rest
assert err == (
" Url 'git+wat://not/a/thing' is ignored. "
'It is either a non-existing path or lacks a specific scheme.\n'
)
assert 'pure-python-package==0.2.1' in pip_freeze(str(venv)).split('\n')
def test_update_invalidated_while_active(tmpdir):
tmpdir.chdir()
enable_coverage()
requirements('')
venv_update()
assert 'project-with-c' not in pip_freeze()
# An arbitrary small package: project_with_c
requirements('project-with-c')
venv_update_symlink_pwd()
out, err = run(
'sh', '-c',
'. venv/bin/activate && python venv_update.py venv= --system-site-packages venv'
)
err = strip_pip_warnings(err)
assert err == ''
out = uncolor(out)
assert out.startswith('''\
> virtualenv --system-site-packages venv
Removing invalidated virtualenv. (system-site-packages changed, to True)
''')
assert 'project-with-c' in pip_freeze()
def test_multiple_issues(tmpdir):
# Make it a bit worse. The output should show all three issues.
tmpdir.chdir()
T.requirements('flake8==2.2.5')
T.venv_update()
T.run('./virtualenv_run/bin/pip', 'uninstall', '--yes', 'pyflakes')
T.requirements('''
# flake8 2.2.5 requires mccabe>=0.2.1 and pep8>=1.5.7, so this isn't satisfiable
flake8==2.2.5
mccabe==0.2
pep8==1.0
''')
with pytest.raises(CalledProcessError) as excinfo:
T.venv_update()
assert excinfo.value.returncode == 1
out, err = excinfo.value.result
err = T.strip_coverage_warnings(err)
assert err == ''
out = T.uncolor(out)
assert (
'''
Cleaning up...
Error: version conflict: mccabe 0.2 (virtualenv_run/%s)'''
''' <-> mccabe>=0.2.1 (from flake8==2.2.5 (from -r requirements.txt (line 3)))
Error: version conflict: pep8 1.0 (virtualenv_run/%s) '''
'''<-> pep8>=1.5.7 (from flake8==2.2.5 (from -r requirements.txt (line 3)))
Error: unmet dependency: pyflakes>=0.8.1 (from flake8==2.2.5 (from -r requirements.txt (line 3)))
Something went wrong! Sending 'virtualenv_run' back in time, so make knows it's invalid.
''' % (PYTHON_LIB, PYTHON_LIB)
) in out
def it_gives_the_same_python_version_as_we_started_with(tmpdir):
other_python = OtherPython()
with tmpdir.as_cwd():
requirements('')
# first simulate some unrelated use of venv-update
# this guards against statefulness in the venv-update scratch dir
venv_update('unrelated_venv', '--', '--version')
run('virtualenv', '--python', other_python.interpreter, 'venv')
initial_version = assert_python_version(other_python.version_prefix)
venv_update_symlink_pwd()
out, err = run('./venv/bin/python', 'venv_update.py')
assert err == ''
out = uncolor(out)
assert out.startswith('''\
> virtualenv
Keeping valid virtualenv from previous run.
> venv/bin/python -m pip.__main__ install pip-faster==%s
''' % __version__)
final_version = assert_python_version(other_python.version_prefix)
assert final_version == initial_version
def test_circular_dependencies():
"""pip-faster should be able to install packages with circular
dependencies."""
venv = make_venv()
out, err = run(
venv.join('bin/pip-faster').strpath,
'install',
'-vv', # show debug logging
'circular-dep-a',
)
err = strip_pip_warnings(err)
assert err == (
'Circular dependency! circular-dep-a==1.0 '
'(from circular-dep-b==1.0->circular-dep-a)\n'
)
out = uncolor(out)
assert out.endswith('''
tracing: circular-dep-a
already queued: circular-dep-b==1.0 (from circular-dep-a)
tracing: circular-dep-b==1.0 (from circular-dep-a)
''')
frozen_requirements = pip_freeze(str(venv)).split('\n')
assert 'circular-dep-a==1.0' in frozen_requirements
assert 'circular-dep-b==1.0' in frozen_requirements
def it_can_handle_a_bad_findlink(tmpdir):
venv = tmpdir.join('venv')
install_coverage(venv)
pip = venv.join('bin/pip').strpath
run(pip, 'install', 'venv-update==' + __version__)
out, err = run(
str(venv.join('bin/pip-faster')),
'install',
'-vvv',
'--find-links',
'git+wat://not/a/thing',
'pure-python-package',
)
out = uncolor(out)
err = strip_pip_warnings(err)
expected = '''\
Successfully built pure-python-package
Installing collected packages: pure-python-package
'''
assert expected in out
# Between this there's:
# 'changing mode of .../venv/bin/pure-python-script to 775'
# but that depends on umask
_, rest = out.split(expected)
expected2 = '''\
Successfully installed pure-python-package-0.2.1
Cleaning up...
'''
assert expected2 in rest
assert "Url 'git+wat://not/a/thing' is ignored." in err
assert 'pure-python-package==0.2.1' in pip_freeze(str(venv)).split('\n')
def test_cant_wheel_package(tmpdir):
with tmpdir.as_cwd():
enable_coverage()
install_coverage()
requirements('cant-wheel-package\npure-python-package')
out, err = venv_update()
err = strip_pip_warnings(err)
assert err == ''
out = uncolor(out)
# for unknown reasons, py27 has an extra line with four spaces in this output, where py26 does not.
out = out.replace('\n \n', '\n')
assert '''
----------------------------------------
Failed building wheel for cant-wheel-package
Running setup.py bdist_wheel for pure-python-package
Destination directory: %s/home/.cache/pip-faster/wheelhouse''' % tmpdir + '''
SLOW!! no wheel found after building (couldn't be wheeled?): cant-wheel-package==0.1.0
Installing collected packages: cant-wheel-package, pure-python-package
Running setup.py install for cant-wheel-package
Could not find .egg-info directory in install record for cant-wheel-package (from -r requirements.txt (line 1))
Successfully installed cant-wheel-package pure-python-package
Cleaning up...
''' in out # noqa
assert pip_freeze().startswith('cant-wheel-package==0.1.0\n')
def test_editable_egg_conflict(tmpdir):
conflicting_package = tmpdir / 'tmp/conflicting_package'
many_versions_package_2 = tmpdir / 'tmp/many_versions_package_2'
from shutil import copytree
copytree(
str(T.TOP / 'tests/testing/packages/conflicting_package'),
str(conflicting_package),
)
copytree(
str(T.TOP / 'tests/testing/packages/many_versions_package_2'),
str(many_versions_package_2),
)
with many_versions_package_2.as_cwd():
from sys import executable as python
T.run(python, 'setup.py', 'bdist_egg', '--dist-dir', str(conflicting_package))
with tmpdir.as_cwd():
T.requirements('-r %s/requirements.d/coverage.txt' % T.TOP)
T.venv_update()
T.requirements('-e %s' % conflicting_package)
with pytest.raises(CalledProcessError) as excinfo:
T.venv_update()
assert excinfo.value.returncode == 1
out, err = excinfo.value.result
err = T.strip_coverage_warnings(err)
assert err == ''
out = T.uncolor(out)
expected = '\nSuccessfully installed many-versions-package conflicting-package\n'
assert expected in out
rest = out.rsplit(expected, 1)[-1]
if True: # :pragma:nocover:pylint:disable=using-constant-test
# Debian de-vendorizes the version of pip it ships
try:
from sysconfig import get_python_version
except ImportError: # <= python2.6
from distutils.sysconfig import get_python_version
assert (
'''\
Cleaning up...
Error: version conflict: many-versions-package 2 (tmp/conflicting_package/many_versions_package-2-py{0}.egg)'''
''' <-> many-versions-package<2 (from conflicting-package==1->-r requirements.txt (line 1))
Storing debug log for failure in {1}/home/.pip/pip.log
Something went wrong! Sending 'venv' back in time, so make knows it's invalid.
'''.format(get_python_version(), tmpdir)
) == rest
assert_venv_marked_invalid(tmpdir.join('venv'))
def test_editable_egg_conflict(tmpdir):
conflicting_package = tmpdir / 'tmp/conflicting_package'
many_versions_package_2 = tmpdir / 'tmp/many_versions_package_2'
from shutil import copytree
copytree(
str(T.TOP / 'tests/testing/packages/conflicting_package'),
str(conflicting_package),
)
copytree(
str(T.TOP / 'tests/testing/packages/many_versions_package_2'),
str(many_versions_package_2),
)
with many_versions_package_2.as_cwd():
from sys import executable as python
T.run(python, 'setup.py', 'bdist_egg', '--dist-dir',
str(conflicting_package))
with tmpdir.as_cwd():
T.requirements('-r %s/requirements.d/coverage.txt' % T.TOP)
T.venv_update()
T.requirements('-e %s' % conflicting_package)
with pytest.raises(CalledProcessError) as excinfo:
T.venv_update()
assert excinfo.value.returncode == 1
out, err = excinfo.value.result
err = T.strip_coverage_warnings(err)
assert err == ''
out = T.uncolor(out)
expected = '\nSuccessfully installed many-versions-package conflicting-package\n'
assert expected in out
rest = out.rsplit(expected, 1)[-1]
if True: # :pragma:nocover:pylint:disable=using-constant-test
# Debian de-vendorizes the version of pip it ships
try:
from sysconfig import get_python_version
except ImportError: # <= python2.6
from distutils.sysconfig import get_python_version
assert (
'''\
Cleaning up...
Error: version conflict: many-versions-package 2 (tmp/conflicting_package/many_versions_package-2-py{0}.egg)'''
''' <-> many-versions-package<2 (from conflicting-package==1->-r requirements.txt (line 1))
Storing debug log for failure in {1}/home/.pip/pip.log
Something went wrong! Sending 'venv' back in time, so make knows it's invalid.
'''.format(get_python_version(), tmpdir)) == rest
assert_venv_marked_invalid(tmpdir.join('venv'))
def it_gives_proper_error_without_requirements(tmpdir):
venv = tmpdir.join('venv')
install_coverage(venv)
pip = venv.join('bin/pip').strpath
run(pip, 'install', 'venv-update==' + __version__)
out, err = run(str(venv.join('bin/pip-faster')), 'install')
out = uncolor(out)
assert out.startswith('You must give at least one requirement to install')
assert err == ''
def test_arguments_version(tmpdir):
"""Show that we can pass arguments through to virtualenv"""
tmpdir.chdir()
enable_coverage()
# should show virtualenv version, successfully
out, err = venv_update('venv=', '--version')
err = strip_pip_warnings(err)
assert err == ''
out = uncolor(out)
lines = out.splitlines()
assert lines[-2] == '> virtualenv --version', repr(lines)
def test_arguments_version(tmpdir):
"""Show that we can pass arguments through to virtualenv"""
tmpdir.chdir()
# should show virtualenv version, successfully
out, err = venv_update('--version')
assert err == ''
out = uncolor(out)
lines = out.splitlines()
# 13:py27 14:py35 15:pypy
assert len(lines) in (13, 14, 15), repr(lines)
assert lines[-2] == '> virtualenv --version', repr(lines)
def test_arguments_version(tmpdir):
"""Show that we can pass arguments through to virtualenv"""
tmpdir.chdir()
enable_coverage()
# should show virtualenv version, successfully
out, err = venv_update('venv=', '--version')
err = strip_pip_warnings(err)
assert err == ''
out = uncolor(out)
lines = out.splitlines()
assert lines[-2] == '> virtualenv --version', repr(lines)
def test_wrong_wheel(tmpdir):
tmpdir.chdir()
requirements('pure_python_package==0.1.0')
venv_update('venv=', 'venv1')
# A different python
# Before fixing, this would install argparse using the `py2-none-any`
# wheel, even on py3
other_python = OtherPython()
ret2out, _ = venv_update('venv=', 'venv2', '-p' + other_python.interpreter, 'install=', '-vv', '-r', 'requirements.txt')
assert '''
No wheel found locally for pinned requirement pure_python_package==0.1.0 (from -r requirements.txt (line 1))
''' in uncolor(ret2out)
def test_wrong_wheel(tmpdir):
tmpdir.chdir()
requirements('pure_python_package==0.1.0')
venv_update('venv1')
# A different python
# Before fixing, this would install argparse using the `py2-none-any`
# wheel, even on py3
other_python = OtherPython()
ret2out, _ = venv_update('venv2', '-p' + other_python.interpreter, '--', '-vv', '-r', 'requirements.txt')
assert '''
No wheel found locally for pinned requirement pure-python-package==0.1.0 (from -r requirements.txt (line 1))
''' in uncolor(ret2out)
def test_install_whl_over_http(pypi_server):
whl_url = pypi_server + '/packages/wheeled_package-0.2.0-py2.py3-none-any.whl'
venv = make_venv()
out, err = run(str(venv.join('bin/pip-faster')), 'install', whl_url)
err = strip_pip_warnings(err)
assert err == ''
out = uncolor(out)
assert out == '''\
Collecting wheeled-package==0.2.0 from {server}/packages/wheeled_package-0.2.0-py2.py3-none-any.whl
Downloading {server}/packages/wheeled_package-0.2.0-py2.py3-none-any.whl
Installing collected packages: wheeled-package
Successfully installed wheeled-package-0.2.0
'''.format(server=pypi_server)
def test_install_whl_over_http(pypi_server):
whl_url = pypi_server + '/packages/wheeled_package-0.2.0-py2.py3-none-any.whl'
venv = make_venv()
out, err = run(str(venv.join('bin/pip-faster')), 'install', whl_url)
err = strip_pip_warnings(err)
assert err == ''
out = uncolor(out)
assert out == '''\
Looking in indexes: {server}/simple
Collecting wheeled-package==0.2.0 from {server}/packages/wheeled_package-0.2.0-py2.py3-none-any.whl
Downloading {server}/packages/wheeled_package-0.2.0-py2.py3-none-any.whl
Installing collected packages: wheeled-package
Successfully installed wheeled-package-0.2.0
'''.format(server=pypi_server)
def test_update_invalidated_missing_activate(tmpdir):
with tmpdir.as_cwd():
enable_coverage()
requirements('')
venv_update()
tmpdir.join('venv/bin/activate').remove()
out, err = venv_update()
err = strip_pip_warnings(err)
assert err == "sh: 1: .: Can't open venv/bin/activate\n"
out = uncolor(out)
assert out.startswith('''\
> virtualenv venv
Removing invalidated virtualenv. (could not inspect metadata)
''')
def test_update_invalidated_missing_activate(tmpdir):
with tmpdir.as_cwd():
enable_coverage()
requirements('')
venv_update()
tmpdir.join('venv/bin/activate').remove()
out, err = venv_update()
err = strip_pip_warnings(err)
assert err == "sh: 1: .: Can't open venv/bin/activate\n"
out = uncolor(out)
assert out.startswith('''\
> virtualenv venv
Removing invalidated virtualenv. (could not inspect metadata)
''')
def test_update_while_active(tmpdir):
tmpdir.chdir()
requirements('virtualenv<2')
venv_update()
assert 'project-with-c' not in pip_freeze()
# An arbitrary small package: project_with_c
requirements('project_with_c')
venv_update_symlink_pwd()
out, err = run('sh', '-c', '. venv/bin/activate && python venv_update.py')
out = uncolor(out)
assert err == ''
assert out.startswith('> virtualenv\nKeeping valid virtualenv from previous run.\n')
assert 'project-with-c' in pip_freeze()
def test_multiple_issues(tmpdir):
# Make it a bit worse. The output should show all three issues.
tmpdir.chdir()
T.enable_coverage()
T.requirements('dependant_package\n-r %s/requirements.d/coverage.txt' % T.TOP)
T.venv_update()
T.run('./venv/bin/pip', 'uninstall', '--yes', 'implicit_dependency')
T.requirements('''
dependant_package
conflicting_package
pure_python_package==0.1.0
''')
with pytest.raises(CalledProcessError) as excinfo:
T.venv_update()
assert excinfo.value.returncode == 1
out, err = excinfo.value.result
err = T.strip_coverage_warnings(err)
err = T.strip_pip_warnings(err)
err = err.splitlines()
# pip outputs conflict lines in a non-consistent order
assert set(err[:3]) == {
"conflicting-package 1 has requirement many-versions-package<2, but you'll have many-versions-package 3 which is incompatible.", # noqa
"dependant-package 1 has requirement pure-python-package>=0.2.1, but you'll have pure-python-package 0.1.0 which is incompatible.", # noqa
'Error: version conflict: pure-python-package 0.1.0 (venv/{lib}) <-> pure-python-package>=0.2.1 (from dependant_package->-r requirements.txt (line 2))'.format( # noqa
lib=PYTHON_LIB,
),
}
# TODO: do we still need to append our own error?
assert '\n'.join(err[3:]) == (
'Error: version conflict: many-versions-package 3 '
'(venv/{lib}) <-> many-versions-package<2 '
'(from conflicting_package->-r requirements.txt (line 3))'.format(
lib=PYTHON_LIB,
)
)
out = T.uncolor(out)
assert_something_went_wrong(out)
assert_venv_marked_invalid(tmpdir.join('venv'))
def test_multiple_issues(tmpdir):
# Make it a bit worse. The output should show all three issues.
tmpdir.chdir()
T.enable_coverage()
T.requirements('dependant_package\n-r %s/requirements.d/coverage.txt' %
T.TOP)
T.venv_update()
T.run('./venv/bin/pip', 'uninstall', '--yes', 'implicit_dependency')
T.requirements('''
dependant_package
conflicting_package
pure_python_package==0.1.0
''')
with pytest.raises(CalledProcessError) as excinfo:
T.venv_update()
assert excinfo.value.returncode == 1
out, err = excinfo.value.result
err = T.strip_coverage_warnings(err)
err = T.strip_pip_warnings(err)
err = err.splitlines()
# pip outputs conflict lines in a non-consistent order
assert set(err[:3]) == {
'dependant-package 1 requires implicit-dependency, which is not installed.',
"dependant-package 1 has requirement pure-python-package>=0.2.1, but you'll have pure-python-package 0.1.0 which is incompatible.", # noqa
"conflicting-package 1 has requirement many-versions-package<2, but you'll have many-versions-package 3 which is incompatible.", # noqa
}
# TODO: do we still need to append our own error?
assert '\n'.join(err[3:]) == (
'Error: version conflict: pure-python-package 0.1.0 '
'(venv/{lib}) <-> pure-python-package>=0.2.1 '
'(from dependant_package->-r requirements.txt (line 2))\n'
'Error: version conflict: many-versions-package 3 '
'(venv/{lib}) <-> many-versions-package<2 '
'(from conflicting_package->-r requirements.txt (line 3))'.format(
lib=PYTHON_LIB, ))
out = T.uncolor(out)
assert_something_went_wrong(out)
assert_venv_marked_invalid(tmpdir.join('venv'))
def test_update_while_active(tmpdir):
tmpdir.chdir()
requirements('virtualenv<2')
venv_update()
assert 'project-with-c' not in pip_freeze()
# An arbitrary small package: project_with_c
requirements('project_with_c')
venv_update_symlink_pwd()
out, err = run('sh', '-c', '. venv/bin/activate && python venv_update.py')
out = uncolor(out)
assert err == ''
assert out.startswith(
'> virtualenv\nKeeping valid virtualenv from previous run.\n')
assert 'project-with-c' in pip_freeze()
def test_cant_wheel_package(tmpdir):
with tmpdir.as_cwd():
enable_coverage()
install_coverage()
requirements('cant-wheel-package\npure-python-package')
out, err = venv_update()
err = strip_pip_warnings(err)
assert err == ' Failed building wheel for cant-wheel-package\n'
out = uncolor(out)
assert '''\
Installing collected packages: cant-wheel-package, pure-python-package
Running setup.py install for cant-wheel-package ... done
Successfully installed cant-wheel-package-0.1.0 pure-python-package-0.2.1
''' in out # noqa
assert pip_freeze().startswith('cant-wheel-package==0.1.0\n')
def test_arguments_version(tmpdir):
"""Show that we can pass arguments through to virtualenv"""
tmpdir.chdir()
from subprocess import CalledProcessError
with pytest.raises(CalledProcessError) as excinfo:
# should show virtualenv version, then crash
venv_update('--version')
assert excinfo.value.returncode == 1
out, err = excinfo.value.result
lasterr = err.rsplit('\n', 2)[-2]
assert lasterr.startswith('virtualenv executable not found: /'), err
assert lasterr.endswith('/virtualenv_run/bin/python'), err
lines = [uncolor(line) for line in out.split('\n')]
assert len(lines) == 3, lines
assert lines[0].endswith(' -m virtualenv virtualenv_run --version'), repr(
lines[0])
def test_arguments_version(tmpdir):
"""Show that we can pass arguments through to virtualenv"""
tmpdir.chdir()
from subprocess import CalledProcessError
with pytest.raises(CalledProcessError) as excinfo:
# should show virtualenv version, then crash
venv_update('--version')
assert excinfo.value.returncode == 1
out, err = excinfo.value.result
err = strip_coverage_warnings(err)
lasterr = err.rsplit('\n', 2)[-2]
assert lasterr.startswith('virtualenv executable not found: /'), err
assert lasterr.endswith('/virtualenv_run/bin/python'), err
lines = [uncolor(line) for line in out.split('\n')]
assert len(lines) == 3, lines
assert lines[0].endswith(' -m virtualenv virtualenv_run --version'), repr(lines[0])
def test_editable_egg_conflict(tmpdir):
conflicting_package = tmpdir / 'tmp/conflicting_package'
many_versions_package_2 = tmpdir / 'tmp/many_versions_package_2'
from shutil import copytree
copytree(
str(T.TOP / 'tests/testing/packages/conflicting_package'),
str(conflicting_package),
)
copytree(
str(T.TOP / 'tests/testing/packages/many_versions_package_2'),
str(many_versions_package_2),
)
with many_versions_package_2.as_cwd():
from sys import executable as python
T.run(python, 'setup.py', 'bdist_egg', '--dist-dir', str(conflicting_package))
with tmpdir.as_cwd():
T.enable_coverage()
T.requirements('-e %s' % conflicting_package)
with pytest.raises(CalledProcessError) as excinfo:
T.venv_update()
assert excinfo.value.returncode == 1
out, err = excinfo.value.result
err = T.strip_coverage_warnings(err)
err = T.strip_pip_warnings(err)
assert err == (
'Error: version conflict: many-versions-package 2 '
'(tmp/conflicting_package/many_versions_package-2-py{}.egg) '
'<-> many_versions_package<2 '
'(from conflicting-package==1->-r requirements.txt (line 1))\n'.format(
get_python_version(),
)
)
out = T.uncolor(out)
assert_something_went_wrong(out)
assert_venv_marked_invalid(tmpdir.join('venv'))
def test_editable_egg_conflict(tmpdir):
conflicting_package = tmpdir / 'tmp/conflicting_package'
many_versions_package_2 = tmpdir / 'tmp/many_versions_package_2'
from shutil import copytree
copytree(
str(T.TOP / 'tests/testing/packages/conflicting_package'),
str(conflicting_package),
)
copytree(
str(T.TOP / 'tests/testing/packages/many_versions_package_2'),
str(many_versions_package_2),
)
with many_versions_package_2.as_cwd():
from sys import executable as python
T.run(python, 'setup.py', 'bdist_egg', '--dist-dir', str(conflicting_package))
with tmpdir.as_cwd():
T.enable_coverage()
T.requirements('-e %s' % conflicting_package)
with pytest.raises(CalledProcessError) as excinfo:
T.venv_update()
assert excinfo.value.returncode == 1
out, err = excinfo.value.result
err = T.strip_coverage_warnings(err)
err = T.strip_pip_warnings(err)
assert err.strip() == (
'Error: version conflict: many-versions-package 2 '
'(tmp/conflicting_package/many_versions_package-2-py{}.egg) '
'<-> many_versions_package<2 '
'(from conflicting-package==1->-r requirements.txt (line 1))'.format(
get_python_version(),
)
)
out = T.uncolor(out)
assert_something_went_wrong(out)
assert_venv_marked_invalid(tmpdir.join('venv'))
def test_cant_wheel_package(tmpdir):
with tmpdir.as_cwd():
enable_coverage()
install_coverage()
requirements('cant-wheel-package\npure-python-package')
out, err = venv_update()
err = strip_pip_warnings(err)
assert err == ' Failed building wheel for cant-wheel-package\n'
out = uncolor(out)
assert '''\
Installing collected packages: cant-wheel-package, pure-python-package
Running setup.py install for cant-wheel-package ... done
Successfully installed cant-wheel-package-0.1.0 pure-python-package-0.2.1
''' in out # noqa
assert pip_freeze().startswith(
'cant-wheel-package==0.1.0\n'
)
def test_update_invalidated_while_active(tmpdir):
tmpdir.chdir()
requirements('virtualenv<2')
venv_update()
assert 'project-with-c' not in pip_freeze()
# An arbitrary small package: project_with_c
requirements('project-with-c')
venv_update_symlink_pwd()
out, err = run('sh', '-c', '. venv/bin/activate && python venv_update.py --system-site-packages')
err = strip_pip_warnings(err)
assert err == ''
out = uncolor(out)
assert out.startswith('''\
> virtualenv --system-site-packages
Removing invalidated virtualenv.
''')
assert 'project-with-c' in pip_freeze()
def test_update_while_active(tmpdir):
tmpdir.chdir()
enable_coverage()
requirements('')
venv_update()
assert 'project-with-c' not in pip_freeze()
# An arbitrary small package: project_with_c
requirements('project_with_c')
venv_update_symlink_pwd()
out, err = run('sh', '-c', '. venv/bin/activate && python venv_update.py venv= venv --python=venv/bin/python')
out = uncolor(out)
err = strip_pip_warnings(err)
assert err == ''
assert out.startswith('''\
> virtualenv venv --python=venv/bin/python
Keeping valid virtualenv from previous run.
''')
assert 'project-with-c' in pip_freeze()
def test_touch_on_error(tmpdir):
from sys import executable
tmpdir.chdir()
requirements('')
from os import mkdir
mkdir('myvenv')
from subprocess import CalledProcessError
with pytest.raises(CalledProcessError) as excinfo:
stage2(executable, tmpdir)
assert excinfo.value.returncode == 1
out, err = excinfo.value.result
err = strip_coverage_warnings(err)
lasterr = err.rsplit('\n', 2)[-2]
assert lasterr == 'AssertionError: Executable not in venv: %s != %s/myvenv/bin/python' % (executable, tmpdir.strpath)
out = uncolor(out)
assert out.startswith('\nSomething went wrong! ')
assert out.count('\n> touch myvenv ') == 1
def test_multiple_issues(tmpdir):
# Make it a bit worse. The output should show all three issues.
tmpdir.chdir()
T.requirements('dependant_package\n-r %s/requirements.d/coverage.txt' % T.TOP)
T.venv_update()
T.run('./venv/bin/pip', 'uninstall', '--yes', 'implicit_dependency')
T.requirements('''
dependant_package
conflicting_package
pure_python_package==0.1.0
''')
with pytest.raises(CalledProcessError) as excinfo:
T.venv_update()
assert excinfo.value.returncode == 1
out, err = excinfo.value.result
err = T.strip_coverage_warnings(err)
assert err == ''
out = T.uncolor(out)
assert (
'''
Cleaning up...
Error: unmet dependency: implicit-dependency (from dependant-package->-r requirements.txt (line 2))
Error: version conflict: many-versions-package 1 (venv/%s)'''
''' <-> many-versions-package>=2,<4 (from dependant-package->-r requirements.txt (line 2))
Error: version conflict: pure-python-package 0.1.0 (venv/%s)'''
''' <-> pure-python-package>=0.2.0 (from dependant-package->-r requirements.txt (line 2))
Storing debug log for failure in %s/home/.pip/pip.log
Something went wrong! Sending 'venv' back in time, so make knows it's invalid.
''' % (PYTHON_LIB, PYTHON_LIB, tmpdir)
) in out
assert_venv_marked_invalid(tmpdir.join('venv'))
def test_args_backward(tmpdir):
tmpdir.chdir()
enable_coverage()
requirements('')
with pytest.raises(CalledProcessError) as excinfo:
venv_update('venv=', 'requirements.txt')
assert excinfo.value.returncode == 3
out, err = excinfo.value.result
err = strip_coverage_warnings(err)
err = strip_pip_warnings(err)
assert err == ''
out = uncolor(out)
assert out.rsplit('\n', 4)[-4:] == [
'> virtualenv requirements.txt',
'ERROR: File already exists and is not a directory.',
'Please provide a different path or delete the file.',
'',
]
assert Path('requirements.txt').isfile()
assert Path('requirements.txt').read() == ''
assert not Path('myvenv').exists()
