import random
from unittest import mock
import pytest
from setuptools.command.build_clib import build_clib
from setuptools.dist import Distribution
from distutils.errors import DistutilsSetupError
class TestBuildCLib:
@mock.patch('setuptools.command.build_clib.newer_pairwise_group')
def test_build_libraries(self, mock_newer):
dist = Distribution()
cmd = build_clib(dist)
# this will be a long section, just making sure all
# exceptions are properly raised
libs = [('example', {'sources': 'broken.c'})]
with pytest.raises(DistutilsSetupError):
cmd.build_libraries(libs)
obj_deps = 'some_string'
libs = [('example', {'sources': ['source.c'], 'obj_deps': obj_deps})]
with pytest.raises(DistutilsSetupError):
cmd.build_libraries(libs)
obj_deps = {'': ''}
libs = [('example', {'sources': ['source.c'], 'obj_deps': obj_deps})]
with pytest.raises(DistutilsSetupError):
cmd.build_libraries(libs)
obj_deps = {'source.c': ''}
libs = [('example', {'sources': ['source.c'], 'obj_deps': obj_deps})]
with pytest.raises(DistutilsSetupError):
cmd.build_libraries(libs)
# with that out of the way, let's see if the crude dependency
# system works
cmd.compiler = mock.MagicMock(spec=cmd.compiler)
mock_newer.return_value = ([], [])
obj_deps = {'': ('global.h',), 'example.c': ('example.h',)}
libs = [('example', {'sources': ['example.c'], 'obj_deps': obj_deps})]
cmd.build_libraries(libs)
assert [['example.c', 'global.h', 'example.h']] in mock_newer.call_args[0]
assert not cmd.compiler.compile.called
assert cmd.compiler.create_static_lib.call_count == 1
# reset the call numbers so we can test again
cmd.compiler.reset_mock()
mock_newer.return_value = '' # anything as long as it's not ([],[])
cmd.build_libraries(libs)
assert cmd.compiler.compile.call_count == 1
assert cmd.compiler.create_static_lib.call_count == 1
@mock.patch('setuptools.command.build_clib.newer_pairwise_group')
def test_build_libraries_reproducible(self, mock_newer):
dist = Distribution()
cmd = build_clib(dist)
# with that out of the way, let's see if the crude dependency
# system works
cmd.compiler = mock.MagicMock(spec=cmd.compiler)
mock_newer.return_value = ([], [])
original_sources = ['a-example.c', 'example.c']
sources = original_sources
obj_deps = {'': ('global.h',), 'example.c': ('example.h',)}
libs = [('example', {'sources': sources, 'obj_deps': obj_deps})]
cmd.build_libraries(libs)
computed_call_args = mock_newer.call_args[0]
while sources == original_sources:
sources = random.sample(original_sources, len(original_sources))
libs = [('example', {'sources': sources, 'obj_deps': obj_deps})]
cmd.build_libraries(libs)
assert computed_call_args == mock_newer.call_args[0]
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