feat: --retry 自动补传 + --verify 完成后校验

tests/test_transfer.py

@@ -282,3 +282,28 @@ def test_dir_size_returns_bytes(tmp_path):
 
 def test_dir_size_missing_returns_zero():
     assert transfer.dir_size("/nonexistent/path/xyz") == 0
+
+# ---------- 补传重试 + 校验 ----------
+
+def test_parse_args_retry():
+    args = transfer.parse_args(["--retry", "5", "s", "d"])
+    assert args.retry == 5
+
+def test_parse_args_retry_default_zero():
+    assert transfer.parse_args(["s", "d"]).retry == 0
+
+def test_parse_args_verify_flag():
+    args = transfer.parse_args(["--verify", "s", "d"])
+    assert args.verify is True
+
+def test_rsync_verify_cmd():
+    cmd = transfer.RsyncBackend.build_verify_cmd("a/", "b/", bwlimit="30000")
+    joined = " ".join(cmd)
+    assert cmd[0] == "rsync"
+    assert "--checksum" in joined or "-c" in joined
+    assert "--dry-run" in joined
+    assert "--bwlimit=30000" in joined
+
+def test_rsync_verify_cmd_no_bwlimit():
+    cmd = transfer.RsyncBackend.build_verify_cmd("a/", "b/")
+    assert "--bwlimit" not in " ".join(cmd)