1 files changed, 100 insertions, 0 deletions
diff --git a/tests/test_tools.py b/tests/test_tools.py
new file mode 100644
index 0000000..897c597
--- /dev/null
+++ b/tests/test_tools.py
@@ -0,0 +1,100 @@
+"""Tests for tool registry and built-in tools."""
+
+from __future__ import annotations
+
+import json
+from unittest.mock import MagicMock, patch
+
+from ollama_web.tools.registry import ToolRegistry, default_registry
+
+
+def test_registry_register_and_execute():
+    reg = ToolRegistry()
+
+    def add(a: int, b: int) -> int:
+        """Add two numbers.
+
+        Args:
+          a: First number.
+          b: Second number.
+
+        Returns:
+          The sum.
+        """
+        return a + b
+
+    reg.register(add)
+    assert reg.get("add") is add
+    result = reg.execute("add", {"a": 2, "b": 3})
+    assert result == "5"
+
+
+def test_registry_execute_unknown():
+    reg = ToolRegistry()
+    out = reg.execute("nonexistent", {})
+    assert "error" in json.loads(out)
+
+
+def test_registry_execute_invalid_json_args():
+    reg = ToolRegistry()
+
+    def echo(x: str) -> str:
+        return x
+
+    reg.register(echo)
+    out = reg.execute("echo", "{not json")
+    assert "error" in json.loads(out)
+
+
+def test_registry_execute_handles_exceptions():
+    reg = ToolRegistry()
+
+    def boom() -> None:
+        raise ValueError("boom")
+
+    reg.register(boom)
+    out = reg.execute("boom", {})
+    assert "error" in json.loads(out)
+
+
+def test_default_registry_has_tools():
+    reg = default_registry()
+    assert "web_search" in reg.names
+    assert "scrape_url" in reg.names
+
+
+def test_web_search_empty_query():
+    from ollama_web.tools.search import web_search
+
+    assert web_search("") == []
+
+
+def test_web_search_mocked():
+    from ollama_web.tools import search as search_mod
+
+    fake = [{"title": "T", "href": "http://x", "body": "B"}]
+
+    class FakeDDGS:
+        def __enter__(self):
+            return self
+
+        def __exit__(self, *a):
+            return None
+
+        def text(self, q, max_results=5):
+            return fake
+
+    monkey = MagicMock()
+    monkey.DDGS = FakeDDGS
+    with patch.object(search_mod, "DDGS", FakeDDGS):
+        from ollama_web.tools.search import web_search
+
+        result = web_search("test", max_results=1)
+    assert len(result) == 1
+    assert result[0]["title"] == "T"
+
+
+def test_scrape_url_empty():
+    from ollama_web.tools.scrape import scrape_url
+
+    assert scrape_url("") == "Invalid URL."
+\ No newline at end of file