test: add unit tests for 8 modules (batch 2)

Cover model_tools, toolset_distributions, context_compressor,
prompt_caching, cronjob_tools, session_search, process_registry,
and cron/scheduler with 127 new test cases.

tests/test_model_tools.py

@@ -0,0 +1,98 @@
+"""Tests for model_tools.py — function call dispatch, agent-loop interception, legacy toolsets."""
+
+import json
+import pytest
+
+from model_tools import (
+    handle_function_call,
+    get_all_tool_names,
+    get_toolset_for_tool,
+    _AGENT_LOOP_TOOLS,
+    _LEGACY_TOOLSET_MAP,
+    TOOL_TO_TOOLSET_MAP,
+)
+
+
+# =========================================================================
+# handle_function_call
+# =========================================================================
+
+class TestHandleFunctionCall:
+    def test_agent_loop_tool_returns_error(self):
+        for tool_name in _AGENT_LOOP_TOOLS:
+            result = json.loads(handle_function_call(tool_name, {}))
+            assert "error" in result
+            assert "agent loop" in result["error"].lower()
+
+    def test_unknown_tool_returns_error(self):
+        result = json.loads(handle_function_call("totally_fake_tool_xyz", {}))
+        assert "error" in result
+
+    def test_exception_returns_json_error(self):
+        # Even if something goes wrong, should return valid JSON
+        result = handle_function_call("web_search", None)  # None args may cause issues
+        parsed = json.loads(result)
+        assert isinstance(parsed, dict)
+
+
+# =========================================================================
+# Agent loop tools
+# =========================================================================
+
+class TestAgentLoopTools:
+    def test_expected_tools_in_set(self):
+        assert "todo" in _AGENT_LOOP_TOOLS
+        assert "memory" in _AGENT_LOOP_TOOLS
+        assert "session_search" in _AGENT_LOOP_TOOLS
+        assert "delegate_task" in _AGENT_LOOP_TOOLS
+
+    def test_no_regular_tools_in_set(self):
+        assert "web_search" not in _AGENT_LOOP_TOOLS
+        assert "terminal" not in _AGENT_LOOP_TOOLS
+
+
+# =========================================================================
+# Legacy toolset map
+# =========================================================================
+
+class TestLegacyToolsetMap:
+    def test_expected_legacy_names(self):
+        expected = [
+            "web_tools", "terminal_tools", "vision_tools", "moa_tools",
+            "image_tools", "skills_tools", "browser_tools", "cronjob_tools",
+            "rl_tools", "file_tools", "tts_tools",
+        ]
+        for name in expected:
+            assert name in _LEGACY_TOOLSET_MAP, f"Missing legacy toolset: {name}"
+
+    def test_values_are_lists_of_strings(self):
+        for name, tools in _LEGACY_TOOLSET_MAP.items():
+            assert isinstance(tools, list), f"{name} is not a list"
+            for tool in tools:
+                assert isinstance(tool, str), f"{name} contains non-string: {tool}"
+
+
+# =========================================================================
+# Backward-compat wrappers
+# =========================================================================
+
+class TestBackwardCompat:
+    def test_get_all_tool_names_returns_list(self):
+        names = get_all_tool_names()
+        assert isinstance(names, list)
+        assert len(names) > 0
+        # Should contain well-known tools
+        assert "web_search" in names or "terminal" in names
+
+    def test_get_toolset_for_tool(self):
+        result = get_toolset_for_tool("web_search")
+        assert result is not None
+        assert isinstance(result, str)
+
+    def test_get_toolset_for_unknown_tool(self):
+        result = get_toolset_for_tool("totally_nonexistent_tool")
+        assert result is None
+
+    def test_tool_to_toolset_map(self):
+        assert isinstance(TOOL_TO_TOOLSET_MAP, dict)
+        assert len(TOOL_TO_TOOLSET_MAP) > 0