test: 后端 pytest 测试基建 (Phase0) — 6 用例全绿 + 部署前备份SOP合规

backend/python/tests/test_sms.py

@@ -0,0 +1,21 @@
+"""短信宝脚手架回归（稳定模块，纯函数）。
+
+验证登录密码 MD5 算法与短信宝约定一致（32 位小写十六进制）。
+这是短信验证码功能（注册/改密/充值）能连通短信宝的前提。
+"""
+import hashlib
+
+from app.sms_client import smsbao_md5
+
+
+def test_smsbao_md5_matches_hashlib():
+    samples = ["XHR521yhf", "abc123", "密码测试", ""]
+    for pw in samples:
+        assert smsbao_md5(pw) == hashlib.md5(pw.encode("utf-8")).hexdigest()
+
+
+def test_smsbao_md5_is_32_lower_hex():
+    out = smsbao_md5("XHR521yhf")
+    assert len(out) == 32
+    assert out == out.lower()
+    assert all(c in "0123456789abcdef" for c in out)