test.py

# coding=utf8

# Any copyright is dedicated to the Public Domain.
# http://creativecommons.org/publicdomain/zero/1.0/

from __future__ import absolute_import
import fluent.syntax.ast as FTL
from fluent.migrate import COPY
from fluent.migrate.helpers import transforms_from


def migrate(ctx):
    """Bug 1457948 - Migrate in-content/privacy.js to Fluent, part {index}."""

    class COPY_FROM_PREFERENCES(COPY):
        def __init__(self, key):
            super(COPY_FROM_PREFERENCES, self).__init__(
                "browser/chrome/browser/preferences/preferences.properties", key)
            
    ctx.add_transforms(
        'browser/browser/preferences/permissions.ftl',
        'browser/browser/preferences/permissions.ftl',
        transforms_from(
"""
permissions-invalid-uri-title = { COPY_FROM_PREFERENCES("invalidURITitle") }
permissions-invalid-uri-label = { COPY_FROM_PREFERENCES("invalidURI") }
""", COPY_FROM_PREFERENCES=COPY_FROM_PREFERENCES
    )