diff --git a/requirements-dev.txt b/requirements-dev.txt
index 409e701..2007d85 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -5,4 +5,5 @@ pytest-flake8
 flake8==3.9.2
 dataclasses
 scanoss
-importlib-metadata==4.12.0
\ No newline at end of file
+importlib-metadata==4.12.0
+pytest-xdist
\ No newline at end of file
diff --git a/tests/test_tox.py b/tests/test_tox.py
new file mode 100644
index 0000000..699c982
--- /dev/null
+++ b/tests/test_tox.py
@@ -0,0 +1,87 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# Copyright (c) 2020 LG Electronics Inc.
+# SPDX-License-Identifier: Apache-2.0
+import os
+import subprocess
+import pytest
+import shutil
+
+remove_directories = ["test_scan", "test_scan2", "test_scan3"]
+
+
+@pytest.fixture(scope="module", autouse=True)
+def setup_test_result_dir():
+    print("==============setup==============")
+    for dir in remove_directories:
+        if os.path.exists(dir):
+            shutil.rmtree(dir)
+
+    yield
+
+
+def run_command(command):
+    process = subprocess.run(command, shell=True, capture_output=True, text=True)
+    success = (process.returncode == 0)
+    return success, process.stdout if success else process.stderr
+
+
+def test_run():
+    scan_success, _ = run_command("fosslight_source -p tests/test_files -j -m -o test_scan")
+    scan_exclude_success, _ = run_command("fosslight_source -p tests -e test_files/test cli_test.py -j -m -o test_scan2")
+    scan_files = os.listdir("test_scan")
+    scan2_files = os.listdir('test_scan2')
+
+    assert scan_success is True, "Test Run: Scan command failed"
+    assert scan_exclude_success is True, "Test Run: Exclude command failed"
+    assert len(scan_files) > 0, "Test Run: No scan files created in test_scan directory"
+    assert len(scan2_files) > 0, "Test Run: No scan files created in test_scan2 directory"
+
+
+def test_help_command():
+    success, _ = run_command("fosslight_source -h")
+    assert success is True, "Test Release: Help command failed "
+
+
+def test_scan_command():
+    success, _ = run_command("fosslight_source -p tests/test_files -o test_scan/scan_result.csv")
+    assert success is True, "Test Release: Failed to generate scan result CSV file"
+
+    assert os.path.exists("test_scan/scan_result.csv"), "Test Release: scan_result.csv file not generated"
+
+    with open("test_scan/scan_result.csv", 'r') as file:
+        content = file.read()
+
+    assert len(content) > 0, "Test Release: scan_result.csv is empty"
+    print(f"Content of scan_result.csv:\n{content}")
+
+
+def test_exclude_command():
+    success, _ = run_command(
+        "fosslight_source -p tests -e test_files/test cli_test.py -j -m -o test_scan2/scan_exclude_result.csv"
+    )
+    assert success is True, "Test release: Exclude scan failded"
+
+    assert os.path.exists("test_scan2/scan_exclude_result.csv"), "Test Release: scan_exclude_result.csv file not generated"
+
+    with open("test_scan2/scan_exclude_result.csv", 'r') as file:
+        content = file.read()
+
+    assert len(content) > 0, "Test Release: scan_exclude_result.csv is empty"
+    print(f"Content of scan_exclude_result.csv:\n{content}")
+
+
+def test_json_command():
+    success, _ = run_command("fosslight_source -p tests/test_files -m -j -o test_scan3/")
+    assert success is True, "Test release: Failed to generate JSON files"
+
+
+def test_ls_test_scan3_command():
+    files_in_test_scan3 = os.listdir("test_scan3")
+    assert len(files_in_test_scan3) > 0, "Test Release: test_scan3 is empty"
+    print(f"Files in test_scan3: {files_in_test_scan3}")
+
+
+def test_flake8():
+    success, _ = run_command("flake8 -j 4")
+    assert success is True, "Flake8: Style check failed"
diff --git a/tox.ini b/tox.ini
index 1bfee84..bf0dc5a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -10,6 +10,7 @@ allowlist_externals =
   cat
   rm
   ls
+  pytest
 setenv =
   PYTHONPATH=.
 
@@ -25,29 +26,21 @@ deps =
   -r{toxinidir}/requirements-dev.txt
 
 commands =
-  rm -rf test_scan
-  fosslight_source -p tests/test_files -j -m -o test_scan
-  fosslight_source -p tests -e test_files/test cli_test.py -j -m -o test_scan2
+  pytest tests/test_tox.py::test_run --maxfail=1 --disable-warnings --cache-clear
 
 [testenv:release]
 deps =
   -r{toxinidir}/requirements-dev.txt
 
 commands =
-  fosslight_source -h
-
-  fosslight_source -p tests/test_files -o test_scan/scan_result.csv
-  cat test_scan/scan_result.csv
-
-  fosslight_source -p tests -e test_files/test cli_test.py -j -m -o test_scan2/scan_exclude_result.csv
-  cat test_scan2/scan_exclude_result.csv
-
-  fosslight_source -p tests/test_files -m -j -o test_scan3/
-  ls test_scan3/
+  pytest tests/test_tox.py::test_help_command tests/test_tox.py::test_scan_command \
+            tests/test_tox.py::test_exclude_command tests/test_tox.py::test_json_command \
+            --maxfail=1 --disable-warnings
 
   python tests/cli_test.py
   pytest -v --flake8
 
 [testenv:flake8]
 deps = flake8
-commands = flake8
\ No newline at end of file
+commands = 
+pytest tests/test_tox.py::test_flake8
\ No newline at end of file