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95160a304d
Adds two opt-in agent tools for controlling a computer: - computer_use: pixel-based (screenshot + mouse/keyboard) via a desktop (pyautogui) or browser (playwright) backend. - browser: DOM/accessibility-based web automation (act by element ref), reliable across ANY tool-calling model, not just vision/CU-trained ones. Core enabler in the runner: a tool may return image content blocks, which are split out and delivered to the model as a follow-up user message (_split_tool_result_media), so screenshots reach any vision provider (e.g. via OpenRouter/openai-compat) without provider-specific code. Both tools are OFF by default (tools.computerUse.enable / tools.browser.enable), are not exposed to subagents, and the browser tool supports an allowed_domains allowlist. Heavy deps (pyautogui/pillow/playwright) are an optional [computer-use] extra. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
172 lines
6.1 KiB
Python
172 lines
6.1 KiB
Python
"""End-to-end DOM-browser tests: models that FAIL pixel-based clicking succeed
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here because they act by element ref instead of by pixel coordinates.
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This is the model-agnostic action path. ``include_screenshot=False`` below proves
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it needs no vision at all — the model acts purely on the text element list.
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Run:
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pip install 'nanobot-ai[computer-use]' && playwright install chromium
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COMPUTER_USE_E2E=1 OPENROUTER_API_KEY=sk-or-... \
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pytest tests/e2e/test_browser_dom_e2e.py -v -s
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Default models are ones that failed pixel clicking (see test_computer_use_e2e
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"Findings") to demonstrate the DOM mode fixes them. Override with
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COMPUTER_USE_E2E_MODELS.
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"""
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from __future__ import annotations
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import os
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import tempfile
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from pathlib import Path
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from types import SimpleNamespace
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import pytest
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from nanobot.agent.runner import AgentRunner, AgentRunSpec
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from nanobot.agent.tools.browser_tool import BrowserTool
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from nanobot.agent.tools.registry import ToolRegistry
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from nanobot.config.schema import AgentDefaults
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pytestmark = pytest.mark.skipif(
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not (os.getenv("COMPUTER_USE_E2E") and os.getenv("OPENROUTER_API_KEY")),
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reason="set COMPUTER_USE_E2E=1 and OPENROUTER_API_KEY to run browser DOM e2e tests",
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)
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# Default to models that FAILED pixel clicking — DOM mode should fix them.
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_DEFAULT_MODELS = [
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"openai/gpt-5.1",
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"google/gemini-2.5-pro",
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]
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_MAX_TOOL_RESULT_CHARS = AgentDefaults().max_tool_result_chars
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_TEST_PAGE = """<!doctype html><html><head><meta charset=utf-8><title>dom e2e</title></head>
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<body>
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<div id=number style="font-size:80px">42</div>
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<button id=submit onclick="document.getElementById('status').textContent='SUBMITTED'">Submit</button>
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<div id=status>idle</div>
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<input id=name placeholder="your name">
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<button id=greet onclick="document.getElementById('greeting').textContent='HELLO '+document.getElementById('name').value">Greet</button>
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<div id=greeting></div>
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</body></html>"""
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def _models() -> list[str]:
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env = os.getenv("COMPUTER_USE_E2E_MODELS", "").strip()
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return [m.strip() for m in env.split(",") if m.strip()] or _DEFAULT_MODELS
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def _make_provider(model: str):
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from nanobot.providers.openai_compat_provider import OpenAICompatProvider
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provider = OpenAICompatProvider(
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api_key=os.environ["OPENROUTER_API_KEY"],
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api_base="https://openrouter.ai/api/v1",
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default_model=model,
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)
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provider.generation = SimpleNamespace(max_tokens=2048, temperature=0.0, reasoning_effort=None)
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return provider
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@pytest.fixture(scope="module")
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def page_url() -> str:
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fd, path = tempfile.mkstemp(suffix=".html", prefix="nanobot_dom_")
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Path(path).write_text(_TEST_PAGE, encoding="utf-8")
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os.close(fd)
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yield f"file://{path}"
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try:
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os.unlink(path)
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except OSError:
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pass
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def _tool(start_url: str) -> BrowserTool:
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# No screenshot — pure DOM, to prove vision is not required.
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return BrowserTool(start_url=start_url, headless=True, include_screenshot=False)
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async def _run(provider, tool: BrowserTool, objective: str, max_iterations: int = 12):
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tools = ToolRegistry()
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tools.register(tool)
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return await AgentRunner(provider).run(AgentRunSpec(
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initial_messages=[{"role": "user", "content": objective}],
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tools=tools,
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model=provider.get_default_model(),
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max_iterations=max_iterations,
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max_tool_result_chars=_MAX_TOOL_RESULT_CHARS,
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))
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@pytest.mark.asyncio
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@pytest.mark.parametrize("model", _models())
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async def test_dom_click_button(model: str, page_url: str):
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attempts = max(1, int(os.getenv("COMPUTER_USE_E2E_ATTEMPTS", "2")))
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ok = False
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for _ in range(attempts):
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tool = _tool(page_url)
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try:
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await _run(
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_make_provider(model),
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tool,
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"The page is already open. Use the browser tool (start with action=snapshot) "
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"to find and click the 'Submit' button.",
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)
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backend = await tool._get_backend()
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status = await backend._page.evaluate("document.getElementById('status').textContent")
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if status == "SUBMITTED":
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ok = True
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break
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finally:
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await tool.close()
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assert ok, f"[{model}] DOM click should set #status to SUBMITTED"
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@pytest.mark.asyncio
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@pytest.mark.parametrize("model", _models())
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async def test_dom_type_and_submit(model: str, page_url: str):
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attempts = max(1, int(os.getenv("COMPUTER_USE_E2E_ATTEMPTS", "2")))
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ok = False
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for _ in range(attempts):
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tool = _tool(page_url)
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try:
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await _run(
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_make_provider(model),
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tool,
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"The page is already open. Use the browser tool: snapshot the page, type "
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"'Ada' into the name input, then click the 'Greet' button.",
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max_iterations=16,
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)
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backend = await tool._get_backend()
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greeting = await backend._page.evaluate(
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"document.getElementById('greeting').textContent"
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)
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if greeting and "ADA" in greeting.upper():
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ok = True
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break
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finally:
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await tool.close()
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assert ok, f"[{model}] DOM type+greet should produce a greeting with the typed name"
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@pytest.mark.asyncio
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@pytest.mark.parametrize("model", _models())
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async def test_dom_read_text_no_vision(model: str, page_url: str):
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"""Pure text path: the model reads the page via read_text (no screenshot at all)."""
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attempts = max(1, int(os.getenv("COMPUTER_USE_E2E_ATTEMPTS", "2")))
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ok = False
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for _ in range(attempts):
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tool = _tool(page_url)
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try:
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result = await _run(
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_make_provider(model),
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tool,
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"Use the browser tool's read_text action to read the page, then tell me the "
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"number shown. Reply with just the number.",
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)
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if result.final_content and "42" in result.final_content:
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ok = True
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break
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finally:
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await tool.close()
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assert ok, f"[{model}] should read '42' via read_text (no vision)"
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