feat: 校验五档等级 (ultrafast/fast/normal/slow/full) + --check-only 纯校验模式

tests/test_transfer.py

@@ -461,3 +461,66 @@ def test_verify_recent_callback_without_progress(tmp_path):
     (src / "a.txt").write_text("x")
     (dst / "a.txt").write_text("x")
     assert transfer.verify_recent_files(str(src), str(dst)) == []
+
+# ---------- 校验进度 (读取量轮询) ----------
+
+def test_read_proc_io_current_process():
+    """读取 /proc/self/io 的 read_bytes"""
+    val = transfer.read_proc_io(os.getpid())
+    assert isinstance(val, int)
+    assert val >= 0
+
+def test_read_proc_io_nonexistent_pid():
+    assert transfer.read_proc_io(99999999) == 0
+
+def test_collect_process_tree_self():
+    """自身进程无子进程时 = 自身 read_bytes"""
+    me = transfer.collect_process_tree_read_bytes(os.getpid())
+    assert isinstance(me, int) and me >= 0
+
+def test_collect_process_tree_with_child(tmp_path):
+    """进程树统计不报错, 返回合理值 (缓存命中时 read_bytes 可能为 0)"""
+    f = tmp_path / "data.bin"
+    f.write_bytes(b"x" * (4 * 1024 * 1024))
+    child = subprocess.Popen(["cat", str(f)], stdout=subprocess.DEVNULL,
+                             start_new_session=True)
+    time.sleep(0.5)
+    val = transfer.collect_process_tree_read_bytes(child.pid)
+    child.kill(); child.wait()
+    assert isinstance(val, int) and val >= 0
+
+# ---------- 校验等级 + 纯校验模式 ----------
+
+def test_parse_check_only():
+    args = transfer.parse_args(["--check-only", "s", "d"])
+    assert args.check_only is True
+
+def test_parse_verify_level_default():
+    assert transfer.parse_args(["s", "d"]).verify_level == "slow"
+    assert transfer.parse_args(["--check-only", "s", "d"]).verify_level == "slow"
+
+def test_parse_verify_level_values():
+    for lv in ("ultrafast", "fast", "normal", "slow", "full"):
+        args = transfer.parse_args(["--verify-level", lv, "s", "d"])
+        assert args.verify_level == lv
+
+def test_size_check_all_ok(tmp_path):
+    src = tmp_path / "s"; dst = tmp_path / "d"
+    src.mkdir(); dst.mkdir()
+    (src / "a.bin").write_bytes(b"x" * 1000)
+    (dst / "a.bin").write_bytes(b"x" * 1000)
+    assert transfer.size_check(str(src), str(dst)) == (0, 0)
+
+def test_size_check_detect_diff_and_missing(tmp_path):
+    src = tmp_path / "s"; dst = tmp_path / "d"
+    src.mkdir(); dst.mkdir()
+    (src / "a.bin").write_bytes(b"x" * 1000)
+    (dst / "a.bin").write_bytes(b"x" * 999)  # 大小不同
+    (src / "b.bin").write_bytes(b"y" * 100)
+    # b.bin 目标缺失
+    diff, miss = transfer.size_check(str(src), str(dst))
+    assert diff == 1 and miss == 1
+
+def test_verify_level_order():
+    """等级从快到慢的顺序固定"""
+    assert transfer.VERIFY_LEVELS == ["ultrafast", "fast", "normal", "slow", "full"]