diff --git a/tools/tlc/tests/conftest.py b/tools/tlc/tests/conftest.py
new file mode 100644
index 0000000..6b28e43
--- /dev/null
+++ b/tools/tlc/tests/conftest.py
@@ -0,0 +1,40 @@
+#!/usr/bin/env python3
+# type: ignore[attr-defined]
+
+#
+# Copyright (c) 2024, Arm Limited. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+""" Common configurations and fixtures for test environment."""
+
+import pytest
+from click.testing import CliRunner
+
+from tlc.cli import cli
+
+
+@pytest.fixture
+def tmptlstr(tmpdir):
+    return tmpdir.join("tl.bin").strpath
+
+
+@pytest.fixture
+def tmpfdt(tmpdir):
+    fdt = tmpdir.join("fdt.dtb")
+    fdt.write_binary(b"\x00" * 100)
+    return fdt
+
+
+@pytest.fixture
+def tlcrunner(tmptlstr):
+    runner = CliRunner()
+    with runner.isolated_filesystem():
+        runner.invoke(cli, ["create", tmptlstr])
+    return runner
+
+
+@pytest.fixture
+def tlc_entries(tmpfdt):
+    return [(0, "/dev/null"), (1, tmpfdt.strpath), (0x102, tmpfdt.strpath)]