diff --git a/infinistore/server.py b/infinistore/server.py
index 5c39bdd..4ec31ed 100644
--- a/infinistore/server.py
+++ b/infinistore/server.py
@@ -116,18 +116,21 @@ def parse_args():
         "--evict-interval",
         required=False,
         default=5,
+        type=int,
         help="evict interval, default 5s",
     )
     parser.add_argument(
         "--evict-min-threshold",
         required=False,
         default=0.6,
+        type=float,
         help="evict min threshold, default 0.6",
     )
     parser.add_argument(
         "--evict-max-threshold",
         required=False,
         default=0.8,
+        type=float,
         help="evict max threshold, default 0.8",
     )
     parser.add_argument(
diff --git a/infinistore/test_server.py b/infinistore/test_server.py
new file mode 100644
index 0000000..45f2c61
--- /dev/null
+++ b/infinistore/test_server.py
@@ -0,0 +1,94 @@
+import asyncio
+import sys
+from unittest.mock import AsyncMock, Mock
+
+import pytest
+
+from infinistore import lib, server
+
+
+def parse_args(monkeypatch, *args):
+    monkeypatch.setattr(sys, "argv", ["infinistore", *args])
+    return server.parse_args()
+
+
+@pytest.mark.parametrize(
+    "args, expected",
+    [
+        ([], (0.6, 0.8, 5)),
+        (["--evict-min-threshold", "0.25"], (0.25, 0.8, 5)),
+        (["--evict-max-threshold", "0.9"], (0.6, 0.9, 5)),
+        (["--evict-interval", "2"], (0.6, 0.8, 2)),
+        (
+            [
+                "--evict-min-threshold",
+                "0",
+                "--evict-max-threshold",
+                "1",
+                "--evict-interval",
+                "1",
+            ],
+            (0.0, 1.0, 1),
+        ),
+    ],
+)
+def test_eviction_argument_types(monkeypatch, args, expected):
+    config = lib.ServerConfig(**vars(parse_args(monkeypatch, *args)))
+    config.verify()
+    values = (
+        config.evict_min_threshold,
+        config.evict_max_threshold,
+        config.evict_interval,
+    )
+    assert values == expected
+    assert tuple(type(value) for value in values) == (float, float, int)
+
+
+@pytest.mark.parametrize(
+    "option, value",
+    [
+        ("--evict-interval", "abc"),
+        ("--evict-interval", "1.5"),
+        ("--evict-min-threshold", "abc"),
+        ("--evict-max-threshold", "abc"),
+    ],
+)
+def test_invalid_eviction_arguments(monkeypatch, capsys, option, value):
+    with pytest.raises(SystemExit) as exc:
+        parse_args(monkeypatch, f"{option}={value}")
+    assert exc.value.code == 2
+    assert option in capsys.readouterr().err
+
+
+def test_periodic_eviction_with_cli_arguments(monkeypatch):
+    config = lib.ServerConfig(
+        **vars(
+            parse_args(
+                monkeypatch,
+                "--enable-periodic-evict",
+                "--evict-min-threshold",
+                "0.25",
+                "--evict-max-threshold",
+                "0.75",
+                "--evict-interval",
+                "2",
+            )
+        )
+    )
+    config.verify()
+    evict = Mock()
+    sleep = AsyncMock(side_effect=asyncio.CancelledError)
+    monkeypatch.setattr(lib._infinistore, "evict_cache", evict)
+    monkeypatch.setattr(server.asyncio, "sleep", sleep)
+
+    async def run():
+        with pytest.raises(asyncio.CancelledError):
+            await server.periodic_evict(
+                config.evict_min_threshold,
+                config.evict_max_threshold,
+                config.evict_interval,
+            )
+
+    asyncio.run(run())
+    evict.assert_called_once_with(0.25, 0.75)
+    sleep.assert_awaited_once_with(2)