diff --git a/tests/test_cli.py b/tests/test_cli.py
index d0b40e3..5504845 100644
--- a/tests/test_cli.py
+++ b/tests/test_cli.py
@@ -4,23 +4,30 @@
 import sys
 from unittest.mock import patch
 
+from pydantic import BaseModel
+
 from whispering.cli import get_opts, is_valid_arg
 
 
+class ArgExample(BaseModel):
+    cmd: str
+    ok: bool
+
+
 def test_options():
 
-    invalid_args = [
-        "--mode server --mic 0",
-        "--mode server --mic 1",
-        "--mode server --beam_size 3",
-        "--mode server --temperature 0",
-        "--mode server --num_block 3",
-        "--mode mic --host 0.0.0.0",
-        "--mode mic --port 8000",
+    exs = [
+        ArgExample(cmd="--mode server --mic 0", ok=False),
+        ArgExample(cmd="--mode server --mic 1", ok=False),
+        ArgExample(cmd="--mode server --beam_size 3", ok=False),
+        ArgExample(cmd="--mode server --temperature 0", ok=False),
+        ArgExample(cmd="--mode server --num_block 3", ok=False),
+        ArgExample(cmd="--mode mic --host 0.0.0.0", ok=False),
+        ArgExample(cmd="--mode mic --port 8000", ok=False),
     ]
 
-    for invalid_arg in invalid_args:
-        with patch.object(sys, "argv", [""] + invalid_arg.split()):
+    for ex in exs:
+        with patch.object(sys, "argv", [""] + ex.cmd.split()):
             opts = get_opts()
             ok = is_valid_arg(opts)
-            assert ok is False, f"{invalid_arg} should be invalid"
+            assert ok is ex.ok, f"{ex.cmd} should be invalid"