diff --git a/.config/dictionary.txt b/.config/dictionary.txt
index 939e1ba..42c71e5 100644
--- a/.config/dictionary.txt
+++ b/.config/dictionary.txt
@@ -130,12 +130,15 @@ subschema
 subspec
 substring
 superfences
+sysargs
 templatable
 templated
 templating
+testcol
 testhost
 testname
 testns
+testorg
 testpaths
 tmplt
 topbar
diff --git a/.config/requirements-test.txt b/.config/requirements-test.txt
new file mode 100644
index 0000000..53a02db
--- /dev/null
+++ b/.config/requirements-test.txt
@@ -0,0 +1,3 @@
+pytest
+pytest-xdist
+tox
diff --git a/.github/workflows/tox.yml b/.github/workflows/tox.yml
new file mode 100644
index 0000000..9aaf21d
--- /dev/null
+++ b/.github/workflows/tox.yml
@@ -0,0 +1,67 @@
+---
+name: tox
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+on:
+  pull_request:
+  schedule:
+    - cron: "0 0 * * *"
+
+jobs:
+  pre:
+    name: pre
+    runs-on: ubuntu-22.04
+    outputs:
+      matrix: ${{ steps.generate_matrix.outputs.matrix }}
+    steps:
+      - name: Determine matrix
+        id: generate_matrix
+        uses: coactions/dynamic-matrix@v1
+        with:
+          min_python: "3.9"
+          max_python: "3.11"
+          default_python: "3.11"
+          other_names: lint
+
+  tox:
+    name: ${{ matrix.name }} / python ${{ matrix.python_version }}
+    runs-on: ubuntu-20.04
+    needs: pre
+    strategy:
+      fail-fast: false
+      matrix: ${{ fromJson(needs.pre.outputs.matrix) }}
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0 # needed by setuptools-scm
+
+      - name: Set up Python ${{ matrix.python_version }}
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python_version }}
+
+      - name: Install tox
+        run: python3 -m pip install --upgrade "tox>=4.0.2"
+
+      - name: Log Python info (${{ matrix.python_version }})
+        run: |
+          command -v python
+          python --version --version
+          python3 -m pip freeze --all
+
+      - name: "tox -e ${{ matrix.passed_name }}"
+        continue-on-error: ${{ matrix.devel || false }}
+        run: python3 -m tox -e ${{ matrix.passed_name }}
+
+  tox_passed:
+    needs: tox
+    runs-on: ubuntu-latest
+    steps:
+      - run: >-
+          python -c "assert set([
+          '${{ needs.tox.result }}',
+          ]) == {'success'}"
diff --git a/.gitignore b/.gitignore
index da80dd6..7372343 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,4 +11,6 @@ build/
 
 *.mypy_cache/
 
+*.tox/
+
 __pycache__/
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 16870b3..6469fba 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -80,6 +80,8 @@ repos:
           - jinja2
           - jsonschema
           - black
+          - pytest
+          - tox
 
   - repo: https://github.com/pre-commit/mirrors-mypy.git
     rev: v1.6.1
@@ -91,6 +93,7 @@ repos:
           - black
           - types-jsonschema
           - types-pyyaml
+          - pytest
         args:
           - src
           - tests
diff --git a/.vscode/settings.json b/.vscode/settings.json
index 97d43d0..a6459b9 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -11,5 +11,8 @@
   "[jsonc]": {
     "editor.defaultFormatter": "esbenp.prettier-vscode"
   },
-  "python.analysis.typeCheckingMode": "basic"
+  "python.analysis.typeCheckingMode": "basic",
+  "python.testing.pytestArgs": ["tests"],
+  "python.testing.unittestEnabled": false,
+  "python.testing.pytestEnabled": true
 }
diff --git a/pyproject.toml b/pyproject.toml
index 4446362..08f6606 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -106,6 +106,7 @@ convention = "pep257"
 
 [tool.setuptools.dynamic]
 dependencies = {file = "requirements.txt"}
+optional-dependencies.test = {file = [".config/requirements-test.txt"]}
 
 [tool.setuptools_scm]
 local_scheme = "no-local-version"
diff --git a/pytest.ini b/pytest.ini
new file mode 100644
index 0000000..5ee6477
--- /dev/null
+++ b/pytest.ini
@@ -0,0 +1,2 @@
+[pytest]
+testpaths = tests
diff --git a/tests/units/__init__.py b/tests/units/__init__.py
new file mode 100644
index 0000000..d4f4303
--- /dev/null
+++ b/tests/units/__init__.py
@@ -0,0 +1 @@
+"""Unit tests for ansible-creator."""
diff --git a/tests/units/conftest.py b/tests/units/conftest.py
new file mode 100644
index 0000000..40c2e16
--- /dev/null
+++ b/tests/units/conftest.py
@@ -0,0 +1,6 @@
+"""conftest."""
+import os
+
+
+os.environ["HOME"] = "/home/ansible"
+os.environ["DEV_WORKSPACE"] = "collections/ansible_collections"
diff --git a/tests/units/test_basic.py b/tests/units/test_basic.py
new file mode 100644
index 0000000..d5191fc
--- /dev/null
+++ b/tests/units/test_basic.py
@@ -0,0 +1,89 @@
+"""Basic unit tests for ansible-creator."""
+from pathlib import Path
+
+import pytest
+
+from ansible_creator.cli import Cli
+from ansible_creator.config import Config
+from ansible_creator.utils import expand_path
+
+
+def test_expand_path() -> None:
+    """Test expand_path utils."""
+    assert (
+        expand_path("~/$DEV_WORKSPACE/namespace/collection")
+        == "/home/ansible/collections/ansible_collections/namespace/collection"
+    )
+
+
+@pytest.mark.parametrize(
+    argnames=["sysargs", "expected"],
+    argvalues=[
+        [
+            ["ansible-creator", "init", "testorg.testcol"],
+            {
+                "subcommand": "init",
+                "no_ansi": False,
+                "log_file": str(Path.cwd() / "ansible-creator.log"),
+                "log_level": "notset",
+                "log_append": "true",
+                "json": False,
+                "verbose": 0,
+                "collection": "testorg.testcol",
+                "init_path": "./",
+                "force": False,
+            },
+        ],
+        [
+            [
+                "ansible-creator",
+                "init",
+                "testorg.testcol",
+                "--init-path=/home/ansible",
+                "-vvv",
+                "--json",
+                "--no-ansi",
+                "--la=false",
+                "--lf=test.log",
+                "--ll=debug",
+                "--force",
+            ],
+            {
+                "subcommand": "init",
+                "no_ansi": True,
+                "log_file": "test.log",
+                "log_level": "debug",
+                "log_append": "false",
+                "json": True,
+                "verbose": 3,
+                "collection": "testorg.testcol",
+                "init_path": "/home/ansible",
+                "force": True,
+            },
+        ],
+    ],
+)
+def test_cli_parser(monkeypatch, sysargs, expected) -> None:  # noqa: ANN001
+    """Test CLI args parsing."""
+    monkeypatch.setattr("sys.argv", sysargs)
+    assert vars(Cli().parse_args()) == expected
+
+
+def test_configuration_class() -> None:
+    """Test Config() dataclass post_init."""
+    cli_args: dict = {
+        "creator_version": "0.0.1",
+        "json": True,
+        "log_append": True,
+        "log_file": "./ansible-creator.log",
+        "log_level": "debug",
+        "no_ansi": False,
+        "subcommand": "init",
+        "verbose": 2,
+        "collection": "testorg.testcol",
+        "init_path": "$HOME",
+    }
+    app_config = Config(**cli_args)
+    assert app_config.namespace == "testorg"
+    assert app_config.collection_name == "testcol"
+    assert app_config.init_path == "/home/ansible"
diff --git a/tox.ini b/tox.ini
new file mode 100644
index 0000000..886ca28
--- /dev/null
+++ b/tox.ini
@@ -0,0 +1,26 @@
+[tox]
+requires =
+    tox>=4.2
+env_list =
+    py
+    lint
+no_package = true
+skip_missing_interpreters = true
+work_dir = {env:TOX_WORK_DIR:.tox}
+
+[testenv:py]
+description = Run pytest under {basepython} ({envpython})
+deps =
+    -e .[test]
+commands =
+    python --version
+    pip list
+    pytest {posargs:tests}
+
+[testenv:lint]
+description = Enforce quality standards under {basepython} ({envpython})
+skip_install = true
+deps =
+    pre-commit
+commands =
+    pre-commit run --show-diff-on-failure --all-files