# 本机 .env 只补缺，不覆盖已有非空环境变量。

from __future__ import annotations

import os

from rpa_oracle.env import load_env as load_local_env


# 缺的键从文件补上，已有非空环境变量保持不变。
def test_load_local_env_fills_missing_and_keeps_existing(tmp_path, monkeypatch):
    monkeypatch.setenv("OMS_REPO", "memory")
    monkeypatch.delenv("RPA_ORACLE_PASSWORD", raising=False)
    env_file = tmp_path / ".env"
    env_file.write_text(
        "OMS_REPO=oracle\nRPA_ORACLE_PASSWORD=not-for-git\n# comment\n\n",
        encoding="utf-8",
    )
    load_local_env(env_file)
    assert os.environ["OMS_REPO"] == "memory"
    assert os.environ["RPA_ORACLE_PASSWORD"] == "not-for-git"