import pytest

from app.templates import safe_render


def test_safe_render_legacy_and_nested():
    tpl = "收到{actual_ref_amt}元 by {trans_order_info.remark}"
    ctx = {"actual_ref_amt": 88.88, "trans_order_info": {"remark": "order123"}}
    out = safe_render(tpl, ctx)
    assert "88.88" in out
    assert "order123" in out


def test_safe_render_missing_var_raises():
    tpl = "Hello {missing_var}"
    with pytest.raises(Exception):
        safe_render(tpl, {})