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from __future__ import absolute_import, division, print_function
from subprocess import check_call
import sys
from mock import patch
from glue.tests.helpers import requires_qt
from .._deps import Dependency, categories
class TestDependency(object):
def test_installed(self):
d = Dependency('math', 'the math module')
assert d.installed
def test_uninstalled(self):
d = Dependency('asdfasdf', 'Non-existent module')
assert not d.installed
def test_noinstall(self):
with patch('glue._deps.check_call') as check_call:
d = Dependency('math', 'exists')
d.install()
assert check_call.call_count == 0
def test_install(self):
with patch('glue._deps.check_call') as check_call:
d = Dependency('asdfasdf', 'never exists')
d.install()
check_call.assert_called_once_with(['pip',
'install',
'asdfasdf'])
def test_install_with_package_arg(self):
with patch('glue._deps.check_call') as check_call:
d = Dependency('asdfasdf', 'never exists', package='bcd')
d.install()
check_call.assert_called_once_with(['pip',
'install',
'bcd'])
def test_installed_str(self):
d = Dependency('math', 'info')
assert str(d) == " math:\tINSTALLED (unknown version)"
def test_noinstalled_str(self):
d = Dependency('asdf', 'info')
assert str(d) == " asdf:\tMISSING (info)"
def test_failed_str(self):
d = Dependency('asdf', 'info')
d.failed = True
assert str(d) == " asdf:\tFAILED (info)"
@requires_qt
def test_optional_dependency_not_imported():
"""
Ensure that a GlueApplication instance can be created without
importing any non-required dependency
"""
optional_deps = categories[2:]
deps = [dep.module for cateogry, deps in optional_deps for dep in deps]
deps.extend(['astropy'])
code = """
class ImportDenier(object):
__forbidden = set(%s)
def find_module(self, mod_name, pth):
if pth:
return
if mod_name in self.__forbidden:
return self
def load_module(self, mod_name):
raise ImportError("Importing %%s" %% mod_name)
import sys
sys.meta_path.append(ImportDenier())
from glue.app.qt import GlueApplication
from glue.core import data_factories
ga = GlueApplication()
""" % deps
cmd = [sys.executable, '-c', code]
check_call(cmd)
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