test_host.py 文件源码

def test_writes_content_to_a_file(self, os_, log, getgrnam, getpwnam):
        # Curly brackets here demonstrate that we are *not* rendering
        # these strings with Python's string formatting. This is a
        # change from the original behavior per Bug #1195634.
        uid = 123
        gid = 234
        owner = 'some-user-{foo}'
        group = 'some-group-{bar}'
        path = '/some/path/{baz}'
        contents = b'what is {juju}'
        perms = 0o644
        fileno = 'some-fileno'

        getpwnam.return_value.pw_uid = uid
        getgrnam.return_value.gr_gid = gid

        with patch_open() as (mock_open, mock_file):
            mock_file.fileno.return_value = fileno

            host.write_file(path, contents, owner=owner, group=group,
                            perms=perms)

            getpwnam.assert_called_with('some-user-{foo}')
            getgrnam.assert_called_with('some-group-{bar}')
            mock_open.assert_called_with('/some/path/{baz}', 'wb')
            os_.fchown.assert_called_with(fileno, uid, gid)
            os_.fchmod.assert_called_with(fileno, perms)
            mock_file.write.assert_called_with(b'what is {juju}')