diff --git a/tests/test_exceptions.py b/tests/test_exceptions.py
deleted file mode 100644
index cc3a0b79..00000000
--- a/tests/test_exceptions.py
+++ /dev/null
@@ -1,26 +0,0 @@
-from labthings.core import exceptions
-import pytest
-
-
-def test_lockerror_valid_code():
-    from threading import Lock
-
-    lock = Lock()
-
-    assert exceptions.LockError("ACQUIRE_ERROR", lock)
-    assert (
-        str(exceptions.LockError("ACQUIRE_ERROR", lock))
-        == f"ACQUIRE_ERROR: LOCK {lock}: Unable to acquire. Lock in use by another thread."
-    )
-
-
-def test_lockerror_invalid_code():
-    from threading import Lock
-
-    lock = Lock()
-
-    assert exceptions.LockError("INVALID_ERROR", lock)
-    assert (
-        str(exceptions.LockError("INVALID_ERROR", lock))
-        == f"INVALID_ERROR: LOCK {lock}: Unknown error."
-    )