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Jake WriterandClaude Opus 5.5
46e5c8d1a4
NewContext() and AsyncNewContext() passed ff_version=None through to generate_context_fingerprint(), so a context's user agent kept the version fpgen drew (e.g. Firefox/146) while the browser underneath was 152. They now default ff_version to the major version of Playwright's Browser.version, which Juggler reports from MOZ_APP_VERSION_DISPLAY, so the UA always names the browser the page is actually talking to. An explicit ff_version still wins. The docstrings said each context gets "its own real fingerprint preset"; the default has been an fpgen draw, with a preset only when one is passed. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
37 lines
1.2 KiB
Python
37 lines
1.2 KiB
Python
"""A context's user agent carries the Firefox version of the browser it runs in.
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Without an explicit ff_version, NewContext kept whatever version fpgen drew
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(e.g. Firefox/146) on a 160 browser, so the UA disagreed with every
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version-dependent API the page could probe.
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"""
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import asyncio
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import re
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from unittest import mock
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import pytest
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from camoufox import async_api, sync_api
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def _user_agent(init_script):
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return re.search(r'setNavigatorUserAgent\("([^"]+)"\)', init_script).group(1)
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@pytest.mark.parametrize("api", ["sync", "async"])
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def test_user_agent_matches_the_browser_version(api):
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context = mock.MagicMock()
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browser = mock.MagicMock()
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# Playwright's Browser.version for Firefox: MOZ_APP_VERSION_DISPLAY.
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browser.version = "160.0.1"
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if api == "sync":
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browser.new_context.return_value = context
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sync_api.NewContext(browser, os="linux")
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else:
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context.add_init_script = mock.AsyncMock()
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browser.new_context = mock.AsyncMock(return_value=context)
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asyncio.run(async_api.AsyncNewContext(browser, os="linux"))
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user_agent = _user_agent(context.add_init_script.call_args.args[0])
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assert "Firefox/160.0" in user_agent and "rv:160.0" in user_agent, user_agent
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