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from io import StringIO
import os
import pytest
from mne.utils import (set_config, get_config, get_config_path,
set_memmap_min_size, _get_stim_channel, sys_info,
verbose, _get_call_line)
def test_config(tmpdir):
"""Test mne-python config file support."""
tempdir = str(tmpdir)
key = '_MNE_PYTHON_CONFIG_TESTING'
value = '123456'
value2 = '123'
old_val = os.getenv(key, None)
os.environ[key] = value
assert (get_config(key) == value)
del os.environ[key]
# catch the warning about it being a non-standard config key
assert (len(get_config('')) > 10) # tuple of valid keys
with pytest.warns(RuntimeWarning, match='non-standard'):
set_config(key, None, home_dir=tempdir, set_env=False)
assert (get_config(key, home_dir=tempdir) is None)
pytest.raises(KeyError, get_config, key, raise_error=True)
assert (key not in os.environ)
with pytest.warns(RuntimeWarning, match='non-standard'):
set_config(key, value, home_dir=tempdir, set_env=True)
assert (key in os.environ)
assert (get_config(key, home_dir=tempdir) == value)
with pytest.warns(RuntimeWarning, match='non-standard'):
set_config(key, None, home_dir=tempdir, set_env=True)
assert (key not in os.environ)
with pytest.warns(RuntimeWarning, match='non-standard'):
set_config(key, None, home_dir=tempdir, set_env=True)
assert (key not in os.environ)
if old_val is not None:
os.environ[key] = old_val
# Check if get_config with key=None returns all config
key = 'MNE_PYTHON_TESTING_KEY'
assert key not in get_config(home_dir=tempdir)
with pytest.warns(RuntimeWarning, match='non-standard'):
set_config(key, value, home_dir=tempdir)
assert get_config(home_dir=tempdir)[key] == value
old_val = os.environ.get(key)
try: # os.environ should take precedence over config file
os.environ[key] = value2
assert get_config(home_dir=tempdir)[key] == value2
finally: # reset os.environ
if old_val is None:
os.environ.pop(key, None)
else:
os.environ[key] = old_val
# Check what happens when we use a corrupted file
json_fname = get_config_path(home_dir=tempdir)
with open(json_fname, 'w') as fid:
fid.write('foo{}')
with pytest.warns(RuntimeWarning, match='not a valid JSON'):
assert key not in get_config(home_dir=tempdir)
with pytest.warns(RuntimeWarning, match='non-standard'):
pytest.raises(RuntimeError, set_config, key, 'true', home_dir=tempdir)
# degenerate conditions
pytest.raises(ValueError, set_memmap_min_size, 1)
pytest.raises(ValueError, set_memmap_min_size, 'foo')
pytest.raises(TypeError, get_config, 1)
pytest.raises(TypeError, set_config, 1)
pytest.raises(TypeError, set_config, 'foo', 1)
pytest.raises(TypeError, _get_stim_channel, 1, None)
pytest.raises(TypeError, _get_stim_channel, [1], None)
def test_sys_info():
"""Test info-showing utility."""
out = StringIO()
sys_info(fid=out)
out = out.getvalue()
assert ('numpy:' in out)
def test_get_call_line():
"""Test getting a call line."""
@verbose
def foo(verbose=None):
return _get_call_line(in_verbose=True)
for v in (None, True):
my_line = foo(verbose=v) # testing
assert my_line == 'my_line = foo(verbose=v) # testing'
def bar():
return _get_call_line(in_verbose=False)
my_line = bar() # testing more
assert my_line == 'my_line = bar() # testing more'
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