diff --git a/tests/exchange/test_okex.py b/tests/exchange/test_okex.py
new file mode 100644
index 000000000..26551a9eb
--- /dev/null
+++ b/tests/exchange/test_okex.py
@@ -0,0 +1,148 @@
+from unittest.mock import MagicMock  # , PropertyMock
+
+from tests.conftest import get_patched_exchange
+
+
+def test_get_maintenance_ratio_and_amt_okex(
+    default_conf,
+    mocker,
+):
+    api_mock = MagicMock()
+    default_conf['trading_mode'] = 'futures'
+    default_conf['margin_mode'] = 'isolated'
+    default_conf['dry_run'] = True
+    api_mock.fetch_leverage_tiers = MagicMock(return_value={
+        'SHIB/USDT:USDT': [
+            {
+                'tier': 1,
+                'notionalFloor': 0,
+                'notionalCap': 2000,
+                'maintenanceMarginRatio': 0.01,
+                'maxLeverage': 75,
+                'info': {
+                    'baseMaxLoan': '',
+                    'imr': '0.013',
+                    'instId': '',
+                    'maxLever': '75',
+                    'maxSz': '2000',
+                    'minSz': '0',
+                    'mmr': '0.01',
+                    'optMgnFactor': '0',
+                    'quoteMaxLoan': '',
+                    'tier': '1',
+                    'uly': 'SHIB-USDT'
+                }
+            },
+            {
+                'tier': 2,
+                # TODO-lev: What about a value between 2000 and 2001?
+                'notionalFloor': 2001,
+                'notionalCap': 4000,
+                'maintenanceMarginRatio': 0.015,
+                'maxLeverage': 50,
+                'info': {
+                    'baseMaxLoan': '',
+                    'imr': '0.02',
+                    'instId': '',
+                    'maxLever': '50',
+                    'maxSz': '4000',
+                    'minSz': '2001',
+                    'mmr': '0.015',
+                    'optMgnFactor': '0',
+                    'quoteMaxLoan': '',
+                    'tier': '2',
+                    'uly': 'SHIB-USDT'
+                }
+            },
+            {
+                'tier': 3,
+                'notionalFloor': 4001,
+                'notionalCap': 8000,
+                'maintenanceMarginRatio': 0.02,
+                'maxLeverage': 20,
+                'info': {
+                    'baseMaxLoan': '',
+                    'imr': '0.05',
+                    'instId': '',
+                    'maxLever': '20',
+                    'maxSz': '8000',
+                    'minSz': '4001',
+                    'mmr': '0.02',
+                    'optMgnFactor': '0',
+                    'quoteMaxLoan': '',
+                    'tier': '3',
+                    'uly': 'SHIB-USDT'
+                }
+            },
+        ],
+        'DOGE/USDT:USDT': [
+            {
+                'tier': 1,
+                'notionalFloor': 0,
+                'notionalCap': 500,
+                'maintenanceMarginRatio': 0.02,
+                'maxLeverage': 75,
+                'info': {
+                    'baseMaxLoan': '',
+                    'imr': '0.013',
+                    'instId': '',
+                    'maxLever': '75',
+                    'maxSz': '500',
+                    'minSz': '0',
+                    'mmr': '0.01',
+                    'optMgnFactor': '0',
+                    'quoteMaxLoan': '',
+                    'tier': '1',
+                    'uly': 'DOGE-USDT'
+                }
+            },
+            {
+                'tier': 2,
+                'notionalFloor': 501,
+                'notionalCap': 1000,
+                'maintenanceMarginRatio': 0.025,
+                'maxLeverage': 50,
+                'info': {
+                    'baseMaxLoan': '',
+                    'imr': '0.02',
+                    'instId': '',
+                    'maxLever': '50',
+                    'maxSz': '1000',
+                    'minSz': '501',
+                    'mmr': '0.015',
+                    'optMgnFactor': '0',
+                    'quoteMaxLoan': '',
+                    'tier': '2',
+                    'uly': 'DOGE-USDT'
+                }
+            },
+            {
+                'tier': 3,
+                'notionalFloor': 1001,
+                'notionalCap': 2000,
+                'maintenanceMarginRatio': 0.03,
+                'maxLeverage': 20,
+                'info': {
+                    'baseMaxLoan': '',
+                    'imr': '0.05',
+                    'instId': '',
+                    'maxLever': '20',
+                    'maxSz': '2000',
+                    'minSz': '1001',
+                    'mmr': '0.02',
+                    'optMgnFactor': '0',
+                    'quoteMaxLoan': '',
+                    'tier': '3',
+                    'uly': 'DOGE-USDT'
+                }
+            },
+        ]
+    })
+    exchange = get_patched_exchange(mocker, default_conf, api_mock, id="okex")
+    assert exchange.get_maintenance_ratio_and_amt('SHIB/USDT:USDT', 2000) == (0.01, None)
+    assert exchange.get_maintenance_ratio_and_amt('SHIB/USDT:USDT', 2001) == (0.015, None)
+    assert exchange.get_maintenance_ratio_and_amt('SHIB/USDT:USDT', 4001) == (0.02, None)
+    assert exchange.get_maintenance_ratio_and_amt('SHIB/USDT:USDT', 8000) == (0.02, None)
+
+    assert exchange.get_maintenance_ratio_and_amt('DOGE/USDT:USDT', 1) == (0.02, None)
+    assert exchange.get_maintenance_ratio_and_amt('DOGE/USDT:USDT', 2000) == (0.03, None)