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import os
import pytest
from contextlib import contextmanager
from buildstream import _yaml
from buildstream._exceptions import LoadError, LoadErrorReason
from tests.testutils.runcli import cli
# Project directory
DATA_DIR = os.path.dirname(os.path.realpath(__file__))
# Context manager to override the reported value of `os.uname()`
@contextmanager
def override_uname_arch(name):
orig_uname = os.uname
orig_tuple = tuple(os.uname())
override_result = (orig_tuple[0], orig_tuple[1],
orig_tuple[2], orig_tuple[3],
name)
def override():
return override_result
os.uname = override
yield
os.uname = orig_uname
@pytest.mark.datafiles(DATA_DIR)
@pytest.mark.parametrize("uname,value,expected", [
# Test explicitly provided arches
('arm', 'arm', 'Army'),
('arm', 'aarch64', 'Aarchy'),
# Test automatically derived arches
('arm', None, 'Army'),
('aarch64', None, 'Aarchy'),
# Test that explicitly provided arches dont error out
# when the `uname` reported arch is not supported
('i386', 'arm', 'Army'),
('x86_64', 'aarch64', 'Aarchy'),
])
def test_conditional(cli, datafiles, uname, value, expected):
with override_uname_arch(uname):
project = os.path.join(datafiles.dirname, datafiles.basename, 'option-arch')
bst_args = []
if value is not None:
bst_args += ['--option', 'machine_arch', value]
bst_args += [
'show',
'--deps', 'none',
'--format', '%{vars}',
'element.bst'
]
result = cli.run(project=project, silent=True, args=bst_args)
assert result.exit_code == 0
loaded = _yaml.load_data(result.output)
assert loaded['result'] == expected
@pytest.mark.datafiles(DATA_DIR)
def test_unsupported_arch(cli, datafiles):
with override_uname_arch("x86_64"):
project = os.path.join(datafiles.dirname, datafiles.basename, 'option-arch')
result = cli.run(project=project, silent=True, args=[
'show',
'--deps', 'none',
'--format', '%{vars}',
'element.bst'
])
assert result.exit_code != 0
assert result.exception
assert isinstance(result.exception, LoadError)
assert result.exception.reason == LoadErrorReason.INVALID_DATA
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