Add unit tests for hosting

Signed-off-by: Vladimir Avdeev <v.avdeev@yadro.com>

tests/test_wallet.py

@@ -0,0 +1,38 @@
+import json
+import os
+from unittest import TestCase
+from uuid import uuid4
+
+from neo3.wallet import Wallet
+
+from neofs_testlib.utils.wallet import init_wallet, get_last_address_from_wallet
+
+
+class TestWallet(TestCase):
+    DEFAULT_PASSWORD = "password"
+    EMPTY_PASSWORD = ""
+
+    def test_init_wallet(self):
+        wallet_file_path = f"{str(uuid4())}.json"
+        for password in (self.EMPTY_PASSWORD, self.DEFAULT_PASSWORD):
+            wrong_password = "wrong_password"
+            init_wallet(wallet_file_path, password)
+            self.assertTrue(os.path.exists(wallet_file_path))
+            with open(wallet_file_path, "r") as wallet_file:
+                Wallet.from_json(json.load(wallet_file), password=password)
+            with self.assertRaises(ValueError):
+                with open(wallet_file_path, "r") as wallet_file:
+                    Wallet.from_json(json.load(wallet_file), password=wrong_password)
+            os.unlink(wallet_file_path)
+
+    def test_get_last_address_from_wallet(self):
+        wallet_file_path = f"{str(uuid4())}.json"
+        init_wallet(wallet_file_path, self.DEFAULT_PASSWORD)
+        with open(wallet_file_path, "r") as wallet_file:
+            wallet = Wallet.from_json(json.load(wallet_file), password=self.DEFAULT_PASSWORD)
+        last_address = wallet.accounts[-1].address
+        self.assertEqual(
+            get_last_address_from_wallet(wallet_file_path, self.DEFAULT_PASSWORD),
+            last_address,
+        )
+        os.unlink(wallet_file_path)