Commit Graph

3 Commits

Author SHA1 Message Date
kshitijk4poor c74ff2c8ef fix(browser): self-review pass — dead-import, log levels, future-proofing
Addresses findings from two self-review passes pre-merge.

First pass (3-agent parallel review):

1. plugins/browser/browser_use/provider.py: drop the
   ``_ = managed_nous_tools_enabled`` dead-import-hider in
   _get_config_or_none(). The import was actively misleading — the
   helper IS used in _get_config() (separate method, separate import),
   not here. The "keep static analysis happy" comment was wrong about
   what the helper does in this scope.

2. agent/browser_provider.py: drop ``pragma: no cover`` from
   is_configured() / provider_name() backward-compat aliases. They ARE
   covered by ``TestLegacyAbcAliases`` — the pragma would have masked
   future regressions.

3. tools/browser_tool.py: refactor _is_legacy_provider_registry_overridden()
   to compare against a module-frozen _DEFAULT_PROVIDER_REGISTRY snapshot
   instead of hardcoded set of 3 keys. Future maintainers adding a 4th
   built-in provider now just extend _PROVIDER_REGISTRY; the override
   detection adapts automatically. Previously the hardcoded
   ``set(...) != {"browserbase", "browser-use", "firecrawl"}`` would flip
   True forever on any 4-key registry, silently routing every install
   onto the legacy fixture path.

4. tools/browser_tool.py: when explicit ``browser.cloud_provider`` is set
   but the registry has no matching plugin (typo, uninstalled plugin,
   discovery failure), emit a WARNING with actionable text instead of
   silently falling through to auto-detect. Legacy code surfaced a typed
   credentials error via direct class instantiation; this log restores
   the signal in the post-migration path.

5. agent/browser_registry.py: trim the triple-redundant _LEGACY_PREFERENCE
   documentation. Module docstring + 13-line block-comment + 5-line
   inline comment was repeating the same point. Kept the docstring and
   trimmed the block-comment to 5 lines.

6. agent/browser_registry.py: upgrade is_available()-raised logging from
   DEBUG to WARNING with exc_info=True. A provider's availability check
   throwing is unusual enough that users debugging "no cloud provider"
   need the traceback in logs.

7. tests/plugins/browser/check_parity_vs_main.py: drop dead top-level
   imports (os, shutil, tempfile — only referenced inside the
   SUBPROCESS_SCRIPT string literal that runs in a child process).

Second pass (architecture + claim-verification review):

8. tools/browser_tool.py: rewrite the inline comment in _get_cloud_provider
   auto-detect branch. Prior text claimed it "routes through the plugin
   registry's legacy preference walk so third-party plugins still get a
   chance to be selected when they're explicitly configured" — false on
   both counts. The branch uses module-level legacy class aliases
   (BrowserUseProvider / BrowserbaseProvider) directly; third-party
   plugins are intentionally reachable only via explicit
   ``browser.cloud_provider``. Corrected comment now matches behaviour
   and cross-references _LEGACY_PREFERENCE for the firecrawl gate
   rationale.

9. tools/browser_tool.py + tests/tools/test_managed_browserbase_and_modal.py:
   drop the unused ``get_active_browser_provider as
   _registry_get_active_browser_provider`` alias from the
   ``from agent.browser_registry import ...`` block. It was never
   referenced; matching test-stub line in the agent.browser_registry
   SimpleNamespace also dropped. ``get_provider`` is still imported (used
   by the explicit-config dispatch path at line 535).

10. plugins/browser/firecrawl/provider.py: align emergency_cleanup()
    with the early-guard pattern used in browserbase + browser_use
    plugins. Previously firecrawl tried the DELETE and relied on
    ``_headers()`` raising ValueError to trip a "missing credentials"
    warning; same final outcome but a different control flow that read
    like a bug to a maintainer skimming the three modules. Now: if
    is_available() is False, log+return early — identical shape to the
    other two providers.

Verification: 54/54 unit tests + 13/13 parity scenarios still pass.
2026-05-17 04:04:15 -07:00
kshitijk4poor 1bb6f03724 fix(browser): ensure plugin discovery before registry lookup; parity harness
Two changes that go together:

1. tools/browser_tool.py — add _ensure_browser_plugins_loaded() and call
   it from _get_cloud_provider() before consulting the registry. Normally
   model_tools triggers discover_plugins() as an import side-effect, but
   _get_cloud_provider() can be reached from contexts that haven't gone
   through model_tools (standalone scripts, certain unit-test paths, the
   new parity-sweep harness). Without the defensive call, the registry is
   empty and _registry_get_browser_provider() returns None — silently
   downgrading users to local mode when they explicitly configured a
   cloud provider with no credentials yet. The behavior-parity sweep
   below caught this as 4 scenario regressions (explicit-X-no-creds for
   all 3 providers, and explicit-firecrawl-with-creds).

2. tests/plugins/browser/check_parity_vs_main.py — subprocess harness
   that pins one Python invocation to origin/main and one to this PR's
   worktree via sys.path.insert(), runs _get_cloud_provider() across a
   13-scenario config matrix, and diffs the reduced shape tuple
   (is_local, provider_name, is_available). Provider_name pulls from
   provider.provider_name() which is the legacy CloudBrowserProvider
   API and remains as a backward-compat alias on the new BrowserProvider
   ABC, so the comparison is apples-to-apples regardless of class
   identity.

Final result: PARITY OK across 13 scenarios. The four observable
config/credential matrices that exercise the dispatcher all match
origin/main bit-for-bit:

  - no-config + no-env → local
  - explicit local + any env → local
  - explicit BB / BU / FC + no creds → provider returned with
    is_available()==False (so dispatcher surfaces typed credentials
    error; matches main exactly)
  - explicit BB / BU / FC + creds → provider returned with
    is_available()==True
  - no-config + BU creds → Browser Use
  - no-config + BB creds → Browserbase
  - no-config + both → Browser Use (legacy walk first hit)
  - no-config + FC only → local (firecrawl NOT in legacy walk)
  - no-config + FC + BB → Browserbase (legacy walk skips firecrawl)

Per the dev skill's "behavior-parity for refactor PRs" rule — without
this subprocess sweep, 31/31 unit tests pass while the production code
path is silently broken for users who type `browser.cloud_provider:
browserbase` and run a single browser command without prior model_tools
import. Caught + fixed before push.
2026-05-17 04:04:15 -07:00
kshitijk4poor fec0a0da98 test(plugins/browser): coverage for the 3-plugin migration
Mirrors tests/plugins/web/test_web_search_provider_plugins.py from PR #25182.
31 tests across 5 classes:

  TestBundledPluginsRegister (8 tests)
    - Three plugins register (browserbase, browser-use, firecrawl)
    - Each plugin's name + display_name accessible
    - get_setup_schema() returns picker-shaped dict with post_setup hook
    - All three lifecycle methods (create_session, close_session,
      emergency_cleanup) overridden on every plugin

  TestIsAvailable (4 tests)
    - browserbase needs BOTH BROWSERBASE_API_KEY and BROWSERBASE_PROJECT_ID
    - browserbase: api_key alone or project_id alone insufficient
    - browser-use satisfied by BROWSER_USE_API_KEY
    - firecrawl satisfied by FIRECRAWL_API_KEY

  TestRegistryResolution (8 tests) — most valuable, locks down
                                     pre-migration semantics:
    - _resolve(None) with no creds returns None (local mode)
    - _resolve('local') short-circuits to None
    - _resolve('browserbase') returns provider even when unavailable
      (so dispatcher surfaces typed credentials error)
    - _resolve('firecrawl') same: explicit-config wins
    - _resolve('unknown') falls through to auto-detect
    - Legacy walk picks browser-use over browserbase
    - browserbase-only configuration: browserbase wins
    - **Regression**: firecrawl is NEVER auto-selected even when
      single-eligible (preserves pre-migration gate; FIRECRAWL_API_KEY
      shared with web firecrawl must not silently route to paid cloud
      browser)

  TestLegacyAbcAliases (6 tests)
    - is_configured() delegates to is_available() for all three plugins
    - provider_name() returns display_name for all three plugins

  TestPickerIntegration (3 tests)
    - _plugin_browser_providers() exposes all three plugins as rows
    - Each row carries post_setup='agent_browser'
    - browser_plugin_name marker matches browser_provider

All tests use real imports — no mocking of provider classes — so the
suite catches drift in the ABC, registry, picker injection, and plugin
glue layer simultaneously.

31/31 passing.
2026-05-17 04:04:15 -07:00