Move shared code to testlib

Signed-off-by: Andrey Berezin <a.berezin@yadro.com>

src/frostfs_testlib/steps/tombstone.py

@@ -0,0 +1,41 @@
+import json
+import logging
+
+from neo3.wallet import wallet
+
+from frostfs_testlib.reporter import get_reporter
+from frostfs_testlib.shell import Shell
+from frostfs_testlib.steps.cli.object import head_object
+
+reporter = get_reporter()
+logger = logging.getLogger("NeoLogger")
+
+
+@reporter.step_deco("Verify Head Tombstone")
+def verify_head_tombstone(
+    wallet_path: str, cid: str, oid_ts: str, oid: str, shell: Shell, endpoint: str
+):
+    header = head_object(wallet_path, cid, oid_ts, shell=shell, endpoint=endpoint)["header"]
+
+    s_oid = header["sessionToken"]["body"]["object"]["target"]["objects"]
+    logger.info(f"Header Session OIDs is {s_oid}")
+    logger.info(f"OID is {oid}")
+
+    assert header["containerID"] == cid, "Tombstone Header CID is wrong"
+
+    with open(wallet_path, "r") as file:
+        wlt_data = json.loads(file.read())
+    wlt = wallet.Wallet.from_json(wlt_data, password="")
+    addr = wlt.accounts[0].address
+
+    assert header["ownerID"] == addr, "Tombstone Owner ID is wrong"
+    assert header["objectType"] == "TOMBSTONE", "Header Type isn't Tombstone"
+    assert (
+        header["sessionToken"]["body"]["object"]["verb"] == "DELETE"
+    ), "Header Session Type isn't DELETE"
+    assert (
+        header["sessionToken"]["body"]["object"]["target"]["container"] == cid
+    ), "Header Session ID is wrong"
+    assert (
+        oid in header["sessionToken"]["body"]["object"]["target"]["objects"]
+    ), "Header Session OID is wrong"