test(exa_search): add unit tests for the ExaSearchChannel doctor branches

tests/test_exa_search_channel.py

@@ -0,0 +1,109 @@
+# -*- coding: utf-8 -*-
+"""Dedicated tests for the ``exa_search`` channel.
+
+Exa is a search-only channel (``can_handle`` is always False) that rides
+mcporter + the remote Exa MCP. Its ``check()`` has five outcomes: mcporter
+missing (off with install prescription), unreadable mcporter config
+(error), ``exa`` present in config (warn — remote connectivity is never
+probed by Doctor), editor imports left unexpanded (warn — credential-read
+boundary), and mcporter installed but Exa unconfigured (off with the exact
+add command). ``inspect_mcporter_config`` and ``shutil.which`` are stubbed
+so every branch runs offline. Follow-up to #331 — extends dedicated
+channel coverage after rss (#360), github (#361), web (#363),
+reddit (#364), xueqiu (#365), v2ex (#366) and youtube (#367).
+"""
+
+from unittest.mock import patch
+
+from agent_reach.channels import exa_search as exa
+from agent_reach.channels.exa_search import ExaSearchChannel
+from agent_reach.channels.mcporter import (
+    McporterConfigError,
+    McporterConfigInspection,
+)
+
+
+def _inspection(names=(), imports_unchecked=False):
+    return McporterConfigInspection(
+        server_names=frozenset(names),
+        source="~/.mcporter/mcporter.json",
+        imports_unchecked=imports_unchecked,
+    )
+
+
+# --- can_handle: search-only ---
+
+def test_can_handle_rejects_every_url():
+    ch = ExaSearchChannel()
+    for url in ["https://exa.ai", "https://example.com/a", ""]:
+        assert ch.can_handle(url) is False, url
+
+
+# --- check(): mcporter missing ---
+
+def test_check_off_without_mcporter_gives_install_steps():
+    ch = ExaSearchChannel()
+    with patch.object(exa.shutil, "which", return_value=None):
+        status, message = ch.check()
+    assert status == "off"
+    assert "npm install -g mcporter" in message
+    assert "mcporter config add exa" in message
+
+
+# --- check(): config error ---
+
+def test_check_error_when_config_inspection_fails():
+    ch = ExaSearchChannel()
+    ch.active_backend = "stale"
+    with patch.object(exa.shutil, "which", return_value="/usr/bin/mcporter"), \
+            patch.object(
+                exa, "inspect_mcporter_config",
+                side_effect=McporterConfigError("server 定义必须是对象"),
+            ):
+        status, message = ch.check()
+    assert status == "error"
+    assert "server 定义必须是对象" in message
+    assert ch.active_backend is None
+
+
+# --- check(): exa configured ---
+
+def test_check_configured_exa_warns_not_ok():
+    """Doctor must not claim a remote MCP works from config presence alone."""
+    ch = ExaSearchChannel()
+    with patch.object(exa.shutil, "which", return_value="/usr/bin/mcporter"), \
+            patch.object(
+                exa, "inspect_mcporter_config",
+                return_value=_inspection(names=["exa", "linkedin"]),
+            ):
+        status, message = ch.check()
+    assert status == "warn"
+    assert "连通验证" in message
+    assert ch.active_backend is None
+
+
+# --- check(): editor imports unexpanded ---
+
+def test_check_unchecked_imports_warns_instead_of_off():
+    ch = ExaSearchChannel()
+    with patch.object(exa.shutil, "which", return_value="/usr/bin/mcporter"), \
+            patch.object(
+                exa, "inspect_mcporter_config",
+                return_value=_inspection(imports_unchecked=True),
+            ):
+        status, message = ch.check()
+    assert status == "warn"
+    assert "editor imports" in message
+
+
+# --- check(): installed but unconfigured ---
+
+def test_check_off_with_add_command_when_unconfigured():
+    ch = ExaSearchChannel()
+    with patch.object(exa.shutil, "which", return_value="/usr/bin/mcporter"), \
+            patch.object(
+                exa, "inspect_mcporter_config", return_value=_inspection(),
+            ):
+        status, message = ch.check()
+    assert status == "off"
+    assert "mcporter config add exa" in message