import pytest

from v1.agent.tool_registry import validate_tool_spec


class TestValidateToolSpec:
    def test_ui_namespace_must_be_frontend(self):
        with pytest.raises(ValueError, match="ui.* must use frontend target"):
            validate_tool_spec(
                {"name": "ui.navigate_to", "execution_target": "backend"}
            )

    def test_srv_namespace_must_be_backend(self):
        with pytest.raises(ValueError, match="srv.* must use backend target"):
            validate_tool_spec(
                {"name": "srv.search_docs", "execution_target": "frontend"}
            )

    def test_ui_namespace_with_frontend_is_valid(self):
        validate_tool_spec({"name": "ui.navigate_to", "execution_target": "frontend"})

    def test_srv_namespace_with_backend_is_valid(self):
        validate_tool_spec({"name": "srv.search_docs", "execution_target": "backend"})

    def test_other_namespace_is_rejected(self):
        with pytest.raises(ValueError, match="must be in ui.* or srv.* namespace"):
            validate_tool_spec({"name": "other.tool", "execution_target": "frontend"})