extract enum type for tenant account role (#3788)

api/tests/unit_tests/models/test_account.py

@@ -0,0 +1,12 @@
+from models.account import TenantAccountRole
+
+
+def test_account_is_privileged_role() -> None:
+    assert TenantAccountRole.ADMIN == 'admin'
+    assert TenantAccountRole.OWNER == 'owner'
+    assert TenantAccountRole.NORMAL == 'normal'
+
+    assert TenantAccountRole.is_privileged_role(TenantAccountRole.ADMIN)
+    assert TenantAccountRole.is_privileged_role(TenantAccountRole.OWNER)
+    assert not TenantAccountRole.is_privileged_role(TenantAccountRole.NORMAL)
+    assert not TenantAccountRole.is_privileged_role('')