def test_connection_file_real_path():
""" Verify realpath is used when formatting connection file """
with mock.patch('os.path.realpath') as patched_realpath:
patched_realpath.return_value = 'foobar'
km = KernelManager(connection_file=os.path.join(
tempfile.gettempdir(), "kernel-test.json"),
kernel_name='test_kernel')
# KernelSpec and launch args have to be mocked as we don't have an actual kernel on disk
km._kernel_spec = KernelSpec(resource_dir='test',
**{
"argv": [
"python.exe",
"-m",
"test_kernel",
"-f",
"{connection_file}"
],
"env": {},
"display_name": "test_kernel",
"language": "python",
"metadata": {}
})
km._launch_args = {}
cmds = km.format_kernel_cmd()
assert cmds[4] is 'foobar'
