diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 5129b6c..aeb7c19 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -24,13 +24,13 @@ jobs:
     name: Build documentation
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2.5.0
+      - uses: actions/checkout@v3.3.0
 
-      - uses: actions/setup-python@v4.3.0
+      - uses: actions/setup-python@v4.5.0
         with:
           python-version: "3.10"
 
-      - uses: syphar/restore-virtualenv@v1.2
+      - uses: syphar/restore-virtualenv@v1.3
         id: cache-virtualenv
         with:
           requirement_files: requirements.txt
@@ -45,7 +45,7 @@ jobs:
         run: pip install -r requirements.txt
 
       - name: Cache docs build directory
-        uses: actions/cache@v3.0.11
+        uses: actions/cache@v3.2.5
         if: env.USE_CACHE == 'true'
         with:
           path: docs/build/
@@ -53,7 +53,7 @@ jobs:
 
       - name: Cache animation nodes source code
         id: animation-nodes-source-code
-        uses: actions/cache@v3.0.11
+        uses: actions/cache@v3.2.5
         if: env.USE_CACHE == 'true'
         with:
           path: animation_nodes/
@@ -94,7 +94,7 @@ jobs:
           cp -r docs/build/html build_docs
           zip -r build_docs build_docs
 
-      - uses: actions/upload-artifact@v3.1.1
+      - uses: actions/upload-artifact@v3.1.2
         if: env.DEPLOY == 'true'
         with:
           name: build_docs
@@ -106,9 +106,9 @@ jobs:
     needs: build
     if: github.ref == 'refs/heads/master' || startsWith(github.ref, 'refs/tags')
     steps:
-      - uses: actions/checkout@v2.5.0
+      - uses: actions/checkout@v3.3.0
 
-      - uses: actions/download-artifact@v3.0.1
+      - uses: actions/download-artifact@v3.0.2
         with:
           name: build_docs
           path: .
diff --git a/.github/workflows/style.yml b/.github/workflows/style.yml
index 504574a..6c838bc 100644
--- a/.github/workflows/style.yml
+++ b/.github/workflows/style.yml
@@ -14,9 +14,9 @@ jobs:
   stylecheck:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2.5.0
+      - uses: actions/checkout@v3.3.0
 
-      - uses: actions/setup-python@v4.3.0
+      - uses: actions/setup-python@v4.5.0
         with:
           python-version: "3.10"
 
diff --git a/.github/workflows/unit-testing.yml b/.github/workflows/unit-testing.yml
new file mode 100644
index 0000000..cad34f3
--- /dev/null
+++ b/.github/workflows/unit-testing.yml
@@ -0,0 +1,46 @@
+name: Unit testing
+on:
+  pull_request: # Run in pull requests
+
+  workflow_dispatch: # Allow to run this workflow manually
+
+  push:
+    branches: # Run when there is a push to master
+      - "master"
+
+jobs:
+  Unit-testing:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      max-parallel: 4
+      fail-fast: false
+      matrix:
+        blender-version: ["2.93.11", "3.4.1",]
+        os: ["ubuntu-latest", "windows-latest",]
+    env:
+      BLENDER_CACHE: ${{ github.workspace }}/cache # The place where blender releases are downloaded
+      BLENDER_VERSION: ${{ matrix.blender-version }}
+    steps:
+      - uses: actions/checkout@v3.3.0
+
+      - uses: actions/setup-python@v4.5.0
+        with:
+          python-version: "3.10"
+
+      - uses: syphar/restore-virtualenv@v1.3
+        id: cache-virtualenv
+        with:
+          requirement_files: requirements.txt
+
+      - name: Cache Blender release download
+        uses: actions/cache@v3.2.5
+        with:
+          path: ${{ env.BLENDER_CACHE }}
+          key: ${{ matrix.os }}-blender-${{ matrix.blender-version }}
+
+      - name: Install dependencies
+        if: steps.cache-virtualenv.outputs.cache-hit != 'true'
+        run: pip install -r requirements.txt
+
+      - name: Run test suite (Blender ${{ matrix.blender-version }}, ${{ matrix.os }})
+        run: python -m scripts.test -b ${{ matrix.blender-version }} -os ${{ matrix.os }}
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index a8bc5fe..55eaba4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,8 +9,13 @@ docs/source/developers_manual/code/
 animation_nodes/
 
 # Cache
+.pytest_cache/
 **/__pycache__
+cache/
 
 # Blender
 *.pyc
-*.blend[1-9]
\ No newline at end of file
+*.blend[1-9]
+
+# Tests
+local_addon/
\ No newline at end of file
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index fd6efc0..2bee47b 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -4,7 +4,7 @@ repos:
   hooks:
   - id: flake8
     additional_dependencies: [
-      "flake8-quotes==3.3.1",
+      "flake8-quotes==3.3.2",
     ]
 
 - repo: https://github.com/codespell-project/codespell
@@ -16,7 +16,7 @@ repos:
     ]
 
 - repo: https://github.com/pycqa/pydocstyle
-  rev: 6.1.1
+  rev: 6.3.0
   hooks:
   - id: pydocstyle
     exclude: quantum_nodes/lib/quantumblur.py
diff --git a/docs/Makefile b/docs/Makefile
index 2faefb6..e67895c 100644
--- a/docs/Makefile
+++ b/docs/Makefile
@@ -1,4 +1,4 @@
-# Minimal makefile for Sphinx documentation
+# Makefile for Sphinx documentation
 
 # You can set these variables from the command line, and also
 # from the environment for the first two.
diff --git a/docs/make.bat b/docs/make.bat
index 9534b01..90ec63a 100644
--- a/docs/make.bat
+++ b/docs/make.bat
@@ -4,28 +4,25 @@ pushd %~dp0
 
 REM Command file for Sphinx documentation
 
-if "%SPHINXBUILD%" == "" (
+if "%2" == "" (
 	set SPHINXBUILD=sphinx-build
+) else (
+	set SPHINXBUILD=%2
 )
+
 set SOURCEDIR=source
 set BUILDDIR=build
+set MODULE=quantum_nodes
 
 if "%1" == "" goto help
 
-%SPHINXBUILD% >NUL 2>NUL
-if errorlevel 9009 (
-	echo.
-	echo.The 'sphinx-build' command was not found. Make sure you have Sphinx
-	echo.installed, then set the SPHINXBUILD environment variable to point
-	echo.to the full path of the 'sphinx-build' executable. Alternatively you
-	echo.may add the Sphinx directory to PATH.
-	echo.
-	echo.If you don't have Sphinx installed, grab it from
-	echo.http://sphinx-doc.org/
-	exit /b 1
-)
+move "../%MODULE%/__init__.py" "../%MODULE%/___init__.py"
+powershell -ExecutionPolicy ByPass -command ". replace_matching_string_in_files.ps1 -find '@persistent' -replace '#@persistent';"
 
 %SPHINXBUILD% -M %1 %SOURCEDIR% %BUILDDIR% %SPHINXOPTS% %O%
+
+powershell -ExecutionPolicy ByPass -command ". replace_matching_string_in_files.ps1 -find '#@persistent' -replace '@persistent';"
+move "../%MODULE%/___init__.py" "../%MODULE%/__init__.py"
 goto end
 
 :help
diff --git a/docs/replace_matching_string_in_files.ps1 b/docs/replace_matching_string_in_files.ps1
new file mode 100644
index 0000000..9aa46c1
--- /dev/null
+++ b/docs/replace_matching_string_in_files.ps1
@@ -0,0 +1,23 @@
+# Replace matching strings with another string in the given list of files
+param(
+    [string]$folder = "../quantum_nodes/",
+    [string]$find = "@persistent",
+    [string]$replace = "#@persistent"
+)
+
+[array]$files = Get-ChildItem -Path $folder -Include *.py -Recurse -Force | select -expand fullname
+
+function Find-And-Replace-Strings {
+
+    param(
+        [array]$files,
+        [string]$find,
+        [string]$replace
+    )
+
+    ForEach ($file in $files) {
+        (Get-Content -Path $file -Raw) -replace $find, $replace | Set-Content -Path $file -NoNewLine
+    }
+}
+
+Find-And-Replace-Strings $files $find $replace
\ No newline at end of file
diff --git a/docs/source/developers_manual/addon/index.rst b/docs/source/developers_manual/addon/index.rst
deleted file mode 100644
index f8ba235..0000000
--- a/docs/source/developers_manual/addon/index.rst
+++ /dev/null
@@ -1,48 +0,0 @@
-Contribute to Quantum Nodes
-===========================
-
-
-.. _dev-env-contrib-addon:
-
-Development environment
-#######################
-
-
-.. toctree::
-    :maxdepth: 1
-    :glob:
-
-    linux
-    windows
-    mac
-    tools
-
-
-.. _instructions-contrib-addon:
-
-Contribute
-##########
-
-
-.. note::
-    Click `here <https://docs.github.com/en/get-started/quickstart/fork-a-repo>`_ to learn about the forking workflow on Github.
-
-
-* Fork our `git repository <https://github.com/Quantum-Creative-Group/quantum_nodes>`_
-* Do your modifications
-* Open a new `pull request <https://github.com/Quantum-Creative-Group/quantum_nodes/pulls>`_
-* Wait for your modifications to be reviewed and accepted
-
-
-.. _git-workflow-contrib-addon:
-
-Git workflow
-############
-
-.. image:: https://miro.medium.com/max/560/1*UH5ozOBwkaFhWA1mrJkVIQ.png
-    :alt: Git workflow
-    :align: center
-    :width: 80%
-    :class: img-rounded
-
-|
\ No newline at end of file
diff --git a/docs/source/developers_manual/addon/linux.rst b/docs/source/developers_manual/addon/linux.rst
deleted file mode 100644
index f2ad7e4..0000000
--- a/docs/source/developers_manual/addon/linux.rst
+++ /dev/null
@@ -1,26 +0,0 @@
-.. _linux-contrib-addon:
-
-Linux
-=====
-
-
-.. _dev-env-dependencies-contrib-addon:
-
-Dependencies
-############
-
-
-.. important::
-    We recommend you to setup an anaconda environment and link it to Blender.
-
-
-Install using ``pip install -r requirements.txt``
-
-
-.. _dev-env-ide-contrib-addon:
-
-IDE
-###
-
-* We recommend you to use `Visual Studio Code <https://code.visualstudio.com/>`_.
-* See :ref:`tools-dev-addon` for more information.
\ No newline at end of file
diff --git a/docs/source/developers_manual/addon/mac.rst b/docs/source/developers_manual/addon/mac.rst
deleted file mode 100644
index b40cacd..0000000
--- a/docs/source/developers_manual/addon/mac.rst
+++ /dev/null
@@ -1,6 +0,0 @@
-.. _mac-contrib-addon:
-
-Mac
-===
-
-TODO
\ No newline at end of file
diff --git a/docs/source/developers_manual/addon/tools.rst b/docs/source/developers_manual/addon/tools.rst
deleted file mode 100644
index ae2cc88..0000000
--- a/docs/source/developers_manual/addon/tools.rst
+++ /dev/null
@@ -1,28 +0,0 @@
-.. _tools-dev-addon:
-
-Tools
-=====
-
-Here is a list of tools which will help you to develop.
-
-* :ref:`vs-code-extensions-addon`
-    * :ref:`blender-vscode`
-
-
-.. _vs-code-extensions-addon:
-
-VSCode extensions
-#################
-
-
-.. _blender-vscode:
-
-Blender Development
-*******************
-
-
-.. note::
-    Tools to simplify Blender development. Developed by `Jacques Lucke <https://github.com/JacquesLucke>`_.
-
-
-* Install `blender development <https://marketplace.visualstudio.com/items?itemName=JacquesLucke.blender-development>`_
\ No newline at end of file
diff --git a/docs/source/developers_manual/addon/windows.rst b/docs/source/developers_manual/addon/windows.rst
deleted file mode 100644
index 4c170fb..0000000
--- a/docs/source/developers_manual/addon/windows.rst
+++ /dev/null
@@ -1,6 +0,0 @@
-.. _windows-contrib-addon:
-
-Windows
-=======
-
-TODO
\ No newline at end of file
diff --git a/docs/source/developers_manual/index.rst b/docs/source/developers_manual/index.rst
index 90e5f3d..266e991 100644
--- a/docs/source/developers_manual/index.rst
+++ b/docs/source/developers_manual/index.rst
@@ -1,9 +1,46 @@
-Developers manual
-=================
+Contribute to Quantum Nodes
+===========================
+
+
+.. _dev-env-contrib-addon:
+
+Development environment
+#######################
+
 
 .. toctree::
     :maxdepth: 1
+    :glob:
+
+    instructions
+    tools
+
+
+.. _contribute-contrib-addon:
+
+Contribute
+##########
+
+
+.. note::
+    Click `here <https://docs.github.com/en/get-started/quickstart/fork-a-repo>`_ to learn about the forking workflow on Github.
+
+
+* Fork our `git repository <https://github.com/Quantum-Creative-Group/quantum_nodes>`_
+* Do your modifications
+* Open a new `pull request <https://github.com/Quantum-Creative-Group/quantum_nodes/pulls>`_
+* Wait for your modifications to be reviewed and accepted
+
+
+.. _git-workflow-contrib-addon:
+
+Git workflow
+############
+
+.. image:: https://miro.medium.com/max/560/1*UH5ozOBwkaFhWA1mrJkVIQ.png
+    :alt: Git workflow
+    :align: center
+    :width: 80%
+    :class: img-rounded
 
-    addon/index
-    manual/index
-    code/quantum_nodes
\ No newline at end of file
+|
\ No newline at end of file
diff --git a/docs/source/developers_manual/instructions.rst b/docs/source/developers_manual/instructions.rst
new file mode 100644
index 0000000..d55aef2
--- /dev/null
+++ b/docs/source/developers_manual/instructions.rst
@@ -0,0 +1,317 @@
+.. _instructions-contrib-addon:
+
+Instructions
+============
+
+.. note::
+
+    This tutorial will help you to setup a full development environment.
+
+
+#. :ref:`dev-env-downloads-contrib-addon`
+#. :ref:`dev-env-installations-contrib-addon`
+#. :ref:`dev-env-build-and-test-contrib-addon`
+#. :ref:`guidelines-contrib-manual`
+
+Glossary
+########
+
+#. | ``pythonblender``: path to python executable which comes with blender.
+   | Example: ``C:\Users\felix\Documents\blender-3.0.1-windows-x64\3.0\python\bin\python.exe``.
+#. | ``sphinx-apidoc``: path to sphinx-apidoc executable.
+   | Example: ``C:\Users\felix\AppData\Roaming\Python\Python39\Scripts\sphinx-apidoc``.
+#. | ``sphinx-build``: path to sphinx-build executable.
+   | Example: ``C:\Users\felix\AppData\Roaming\Python\Python39\Scripts\sphinx-build``.
+
+.. _dev-env-downloads-contrib-addon:
+
+Downloads
+#########
+
+
+.. _dev-env-downloads-blender-contrib-addon:
+
+Blender
+*******
+
+* | First, we need to download a portable version of Blender.
+  | Download a version from here: https://download.blender.org/release/.
+
+
+.. _dev-env-downloads-animation-nodes-contrib-addon:
+
+Animation Nodes
+***************
+
+* | Before downloading Animation Nodes, we need to know which python version is shipped with the
+  | chosen Blender version. We can get it by looking at the files (from the archive) located
+  | at: ``blender[...]/[X.Y]/python/bin/``.
+  | For Blender >= 2.93.0, it will probably be something between python 3.9 and 3.10.
+
+* | Once we know that, we have to download the add-on from the release page of
+  | Animation Nodes (take latest): https://github.com/JacquesLucke/animation_nodes/releases/tag/master-cd-build.
+
+
+.. _dev-env-downloads-quantum-nodes-contrib-addon:
+
+Quantum Nodes
+*************
+
+* Make a fork of the repository: https://github.com/Quantum-Creative-Group/quantum_nodes/fork.
+* Then, clone the forked repository on your computer.
+
+
+.. _dev-env-downloads-ide-contrib-addon:
+
+IDE
+***
+
+* We recommend to use `Visual Studio Code <https://code.visualstudio.com/>`_.
+* See :ref:`tools-dev-addon` for more information.
+
+
+.. _dev-env-installations-contrib-addon:
+
+Installations
+#############
+
+
+.. note::
+
+    Since Blender comes with its own python environment, we will use this one as our development environment too.
+
+
+.. _dev-env-installations-blender-contrib-addon:
+
+Blender
+*******
+
+* | Decompress the downloaded archive which contains the blender version.
+  | We can place these files where we want.
+  | ``Linux``   : We recommend you to place them in the ``/opt/`` folder.
+  | ``Windows`` : We recommend you to place them in the ``Documents/`` folder.
+  | ``Mac``     : [TODO].
+
+* Run Blender at least one time to make sure it works fine.
+
+
+.. _dev-env-installations-python-contrib-addon:
+
+Python dependencies
+*******************
+
+
+* Go to the ``quantum_nodes/`` directory.
+* Run ``pythonblender -m pip install -r requirements.txt``.
+
+
+.. _dev-env-installations-animation-nodes-contrib-addon:
+
+Animation Nodes
+***************
+
+In this part we will install the add-on for Blender and copy the content of the ``animation_nodes/`` folder in the
+blender python distribution so it will be available for our different scripts (documentation build and test suite).
+
+Installation in Blender:
+
+* Install the add-on inside Blender (as in the :ref:`installation guide <animation-nodes-install-blender-linux>`).
+* Make sure it works fine.
+
+Installation for the IDE and the python scripts:
+
+* | Extract the ``animation_nodes/`` folder from the archive.
+  | ``Linux``   : Run the following bash script ``scripts/setup_animation_nodes.sh``.
+  | ``Windows`` : Run the following bash script ``scripts/setup_animation_nodes.ps1``.
+  | ``Mac``     : [TODO]
+* | You need to provide several information in order to run the script correctly:
+  | -> The path to the ``site-packages/`` folder in the python distribution shipped with Blender.
+  | -> The path to the ``animation_nodes/`` folder previously extracted.
+  | -> The path to the ``quantum_nodes/`` folder.
+  | Examples:
+  | ``Linux``   : ``bash scripts/setup_animation_nodes.sh /opt/blender-3.0.1-linux-x64/3.0/python/lib/python3.9/site-packages/ ~/Documents/animation_nodes/ ~/Documents/quantum_nodes/``
+  | ``Windows`` : ``scripts/setup_animation_nodes.ps1 -site_packages C:\Users\felix\Documents\blender-3.0.1-windows-x64\3.0\python\lib\site-packages\ -animation_nodes C:\Users\felix\Documents\quantum_nodes\animation_nodes - C:\Users\felix\Documents\quantum_nodes``
+  | ``Mac``     : [TODO]
+
+
+.. _dev-env-build-and-test-contrib-addon:
+
+Build and test
+##############
+
+.. note::
+
+    Before following the next instructions, please install and configure the recommended Visual Studio Code
+    extensions cited in :ref:`this section <tools-dev-addon>`.
+
+
+.. _dev-env-build-and-test-run-from-vscode-contrib-addon:
+
+Run Quantum Nodes from Visual Studio Code
+*****************************************
+
+The `Blender Development` extension let us to quickly run Blender with the modifications made to the add-on
+on which we are currently working. It runs Blender in a sort of 'debug' mode to test our add-on.
+
+* In VSCode, hit ``ctrl + shift + p`` and type ``blender start``. Then, hit ``enter``.
+* If no blender executable was previously set, follow the instructions given by the extension.
+* Wait for Blender to start.
+* Once ready, edit code in live and save files to apply changes (it reloads the add-on automatically).
+
+
+.. _dev-env-build-and-test-build-documentation-contrib-addon:
+
+Build the documentation
+***********************
+
+Generate automatic code documentation:
+
+
+.. note::
+
+    This step is not mandatory to build the documentation. You can skip it if you don't need this part
+    in your local build.
+
+
+* Go in the ``quantum_nodes/docs/`` folder.
+* | Run: ``sphinx-apidoc -t "_templates/" --implicit-namespaces -d 1 -f -M -T -o source/developers_manual/code/ ../quantum_nodes "/*animation_nodes/*" "/*lib/*"``
+
+
+Build the documentation:
+
+* | Go in the ``quantum_nodes/docs/`` folder.
+  | Run (``Linux``)   : ``make html SPHINXBUILD=sphinx-build``
+  | Run (``Windows``) : ``make.bat html SPHINXBUILD=sphinx-build``
+  | Run (``Mac``)     : [TODO]
+* The build is then available in the following folder: ``quantum_nodes/docs/build/``.
+
+
+.. _dev-env-build-and-test-run-test-suite-contrib-addon:
+
+Run the test suite
+******************
+
+* | From root of the repository, run: ``pythonblender -m scripts.test -b [blender version] -os [operating system]``
+  | Example (``Linux``)   : ``pythonblender -m scripts.test -b 3.0.0 -os ubuntu-latest``
+  | Example (``Windows``) : ``pythonblender -m scripts.test -b 3.0.0 -os windows-latest``
+  | Example (``Mac``)     : [TODO]
+
+
+.. _guidelines-contrib-manual:
+
+Guidelines manual
+#################
+
+
+File architecture
+*****************
+
+.. raw:: html
+
+    <pre>
+    docs/
+    ├── _static/
+    │   ├── animation_nodes_init_replacement_file.txt
+    │   ├── css/
+    │   └── images/
+    │
+    ├── _templates/
+    │   ├── modules.rst_t
+    │   ├── packages.rst_t
+    │   └── toc.rst_t
+    │
+    ├── build/
+    │
+    ├── source/
+    │   ├── conf.py
+    │   ├── index.rst
+    │   ├── MethodNameFilter.py
+    │   ├── spelling_wordlist.txt
+    │   │
+    │   ├── [chapter]/
+    │   │   ├── index.rst
+    │   │   ├── file.rst
+    │   │   ├── [subchapter]/
+    │   │   ├── ...
+    │   │   └── [subchapter]/
+    │   │
+    │   ├── ...
+    │   └── [chapter]/
+    │       └── ...
+    │
+    └── ...
+    </pre><br>
+
+
+Add a new chapter
+*****************
+
+#. Create a new folder
+    * If your chapter is a new section, create a new folder under ``source/``
+    * If your chapter is a subchapter, create a new folder under ``source/parent_chapter/``
+    * Your chapter may be a subsubchapter. No problem, keep the same logic as described before
+    * Give it a short and precise name (snake_case naming style)
+
+#. Create a new ``index.rst`` file in your chapter
+    * This file is the "welcome page" of your chapter
+    * Here you can add links to any subchapters and so on ...
+
+#. If you need to add custom css to your pages
+    * Create a new folder under ``docs/_static/css/``
+    * Give it the same name as your chapter
+    * Insert your css files
+    * | Once this is done, add your path to the ``html_css_files`` variable in ``config.py``
+
+In a more visual way, here is the architecture of a section/chapter:
+
+.. raw:: html
+
+    <pre>
+    ├── index.rst
+    ├── my_subchapter/
+    │   ├── index.rst
+    │   ├── my_subsubchapter/
+    │   ├── file.rst
+    │   └── ...
+    ├── file.rst
+    └── ...
+    </pre><br>
+
+So, at the end, here is what the global architecture should look like
+
+.. raw:: html
+
+    <pre>
+    docs/
+    ├── _static/
+    │   ├── animation_nodes_init_replacement_file.txt
+    │   ├── css/
+    │   └── images/
+    │
+    ├── _templates/
+    │   ├── modules.rst_t
+    │   ├── packages.rst_t
+    │   └── toc.rst_t
+    │
+    ├── build/
+    │
+    ├── source/
+    │   ├── conf.py
+    │   ├── index.rst
+    │   ├── MethodNameFilter.py
+    │   ├── spelling_wordlist.txt
+    │   │
+    │   ├── my_chapter/
+    │   │   ├── index.rst
+    │   │   ├── my_subchapter/
+    │   │   │   ├── index.rst
+    │   │   │   ├── my_subsubchapter/
+    │   │   │   ├── file.rst
+    │   │   │   └── ...
+    │   │   ├── file.rst
+    │   │   └── ...
+    │   │
+    │   └── ...
+    │
+    └── ...
+    </pre><br>
\ No newline at end of file
diff --git a/docs/source/developers_manual/manual/index.rst b/docs/source/developers_manual/manual/index.rst
deleted file mode 100644
index ee32df1..0000000
--- a/docs/source/developers_manual/manual/index.rst
+++ /dev/null
@@ -1,174 +0,0 @@
-Contribute to the manual
-========================
-
-
-.. _dev-env-contrib-manual:
-
-Development environment
-***********************
-
-.. toctree::
-    :maxdepth: 1
-
-    linux
-    windows
-    mac
-    tools
-
-
-.. _intructions-linux-contrib-manual:
-
-Contribute
-**********
-
-
-.. note::
-    Click `here <https://docs.github.com/en/get-started/quickstart/fork-a-repo>`_ to learn about the forking workflow on Github.
-
-
-* Fork the repository: https://github.com/Quantum-Creative-Group/quantum_nodes
-* Do your modifications
-* Once you are ready, open a new `pull request <https://github.com/Quantum-Creative-Group/quantum_nodes/pulls>`_
-* Wait for your modifications to be reviewed and accepted
-
-
-.. _guidelines-contrib-addon:
-
-Guidelines
-**********
-
-
-#. :ref:`files-architecture-contrib-manual`
-#. :ref:`add-a-new-chapter-contrib-manual`
-
-
-.. _files-architecture-contrib-manual:
-
-Files architecture
-------------------
-
-.. raw:: html
-
-    <pre>
-    docs/
-    ├── _static/
-    │   ├── animation_nodes_init_replacement_file.txt
-    │   ├── css/
-    │   └── images/
-    │
-    ├── _templates/
-    │   ├── modules.rst_t
-    │   ├── packages.rst_t
-    │   └── toc.rst_t
-    │
-    ├── build/
-    │
-    ├── source/
-    │   ├── conf.py
-    │   ├── index.rst
-    │   ├── MethodNameFilter.py
-    │   ├── spelling_wordlist.txt
-    │   │
-    │   ├── [chapter]/
-    │   │   ├── index.rst
-    │   │   ├── file.rst
-    │   │   ├── [subchapter]/
-    │   │   ├── ...
-    │   │   └── [subchapter]/
-    │   │
-    │   ├── ...
-    │   └── [chapter]/
-    │       └── ...
-    │
-    └── ...
-    </pre><br>
-
-
-.. _add-a-new-chapter-contrib-manual:
-
-Add a new chapter
------------------
-
-#. Create a new folder
-    * If your chapter is a new section, create a new folder under ``source/``
-    * If your chapter is a subchapter, create a new folder under ``source/parent_chapter/``
-    * Your chapter may be a subsubchapter. No problem, keep the same logic as described before
-    * Give it a short and precise name (snake_case naming style)
-
-#. Create a new ``index.rst`` file in your chapter
-    * This file is the "welcome page" of your chapter
-    * Here you can add links to any subchapters and so on ...
-
-#. If you need to add custom css to your pages
-    * Create a new folder under ``docs/_static/css/``
-    * Give it the same name as your chapter
-    * Insert your css files
-    *   |   Once this is done, add your path to the ``html_css_files`` variable in ``config.py``
-
-In a more visual way, here is the architecture of a section/chapter:
-
-.. raw:: html
-
-    <pre>
-    ├── index.rst
-    ├── my_subchapter/
-    │   ├── index.rst
-    │   ├── my_subsubchapter/
-    │   ├── file.rst
-    │   └── ...
-    ├── file.rst
-    └── ...
-    </pre><br>
-
-So, at the end, here is what the global architecture should look like
-
-.. raw:: html
-
-    <pre>
-    docs/
-    ├── _static/
-    │   ├── animation_nodes_init_replacement_file.txt
-    │   ├── css/
-    │   └── images/
-    │
-    ├── _templates/
-    │   ├── modules.rst_t
-    │   ├── packages.rst_t
-    │   └── toc.rst_t
-    │
-    ├── build/
-    │
-    ├── source/
-    │   ├── conf.py
-    │   ├── index.rst
-    │   ├── MethodNameFilter.py
-    │   ├── spelling_wordlist.txt
-    │   │
-    │   ├── my_chapter/
-    │   │   ├── index.rst
-    │   │   ├── my_subchapter/
-    │   │   │   ├── index.rst
-    │   │   │   ├── my_subsubchapter/
-    │   │   │   ├── file.rst
-    │   │   │   └── ...
-    │   │   ├── file.rst
-    │   │   └── ...
-    │   │
-    │   └── ...
-    │
-    └── ...
-    </pre><br>
-
-
-.. _git-workflow-contrib-manual:
-
-Git workflow
-************
-
-.. image:: https://miro.medium.com/max/560/1*UH5ozOBwkaFhWA1mrJkVIQ.png
-    :alt: Git workflow
-    :align: center
-    :width: 80%
-    :class: img-rounded
-
-|
\ No newline at end of file
diff --git a/docs/source/developers_manual/manual/linux.rst b/docs/source/developers_manual/manual/linux.rst
deleted file mode 100644
index d5180cf..0000000
--- a/docs/source/developers_manual/manual/linux.rst
+++ /dev/null
@@ -1,34 +0,0 @@
-Linux
-=====
-
-
-.. important::
-    This tutorial is written for Ubuntu
-
-
-.. _dev-env-ide-contrib-manual:
-
-IDE
-###
-
-* We recommend you to use `Visual Studio Code <https://code.visualstudio.com/>`_.
-* See :ref:`tools-contrib-manual` for more information.
-
-
-.. _dependencies-linux-contrib-manual:
-
-Dependencies
-############
-
-| Install using: ``pip install -r requirements.txt``
-
-
-.. _build-linux-contrib-manual:
-
-Build the manual
-################
-
-* Clone the repository next to the `quantum_nodes` repository.
-
-*   |   Open a terminal and enter: ``make html spelling``
-    |   Visualize the html in ``build/html``
\ No newline at end of file
diff --git a/docs/source/developers_manual/manual/mac.rst b/docs/source/developers_manual/manual/mac.rst
deleted file mode 100644
index 10b210f..0000000
--- a/docs/source/developers_manual/manual/mac.rst
+++ /dev/null
@@ -1,4 +0,0 @@
-Mac
-===
-
-TODO
\ No newline at end of file
diff --git a/docs/source/developers_manual/manual/windows.rst b/docs/source/developers_manual/manual/windows.rst
deleted file mode 100644
index 77c292d..0000000
--- a/docs/source/developers_manual/manual/windows.rst
+++ /dev/null
@@ -1,45 +0,0 @@
-Windows
-=======
-
-
-#. :ref:`install-dependencies-windows-contrib-manual`
-#. :ref:`intructions-windows-contrib-manual`
-#. :ref:`build-windows-contrib-manual`
-
-
-.. _install-dependencies-windows-contrib-manual:
-
-Install dependencies
-####################
-
-
-.. important::
-    Make sure to install the dependencies in the right anaconda environment.
-
-
-|   ``pip install -r requirements.txt``
-
-.. _intructions-windows-contrib-manual:
-
-Contribute
-##########
-
-
-.. note::
-    Click `here <https://docs.github.com/en/get-started/quickstart/fork-a-repo>`_ to learn about the forking workflow on Github.
-
-
-* Fork the repository: https://github.com/Quantum-Creative-Group/quantum_nodes
-* Do your modifications
-* Once you are ready, open a new `pull request <https://github.com/Quantum-Creative-Group/quantum_nodes/pulls>`_
-* Wait for your modifications to be reviewed and accepted
-
-.. _build-windows-contrib-manual:
-
-Build the manual
-################
-
-* Clone the repository next to the `quantum_nodes` repository.
-
-*   |   Open a terminal and enter: ``make html spelling``
-    |   Visualize the html in ``build/html``
\ No newline at end of file
diff --git a/docs/source/developers_manual/manual/tools.rst b/docs/source/developers_manual/tools.rst
similarity index 65%
rename from docs/source/developers_manual/manual/tools.rst
rename to docs/source/developers_manual/tools.rst
index 3f06d3e..29439fe 100644
--- a/docs/source/developers_manual/manual/tools.rst
+++ b/docs/source/developers_manual/tools.rst
@@ -1,22 +1,36 @@
-.. _tools-contrib-manual:
+.. _tools-dev-addon:
 
 Tools
 =====
 
-Here is a list of tools which will help you to write documentation.
+Here is a list of tools which will help you to develop Quantum Nodes.
 
-#. :ref:`vs-code-extensions`
-    #. :ref:`pydocstring-generator-vscode`
-    #. :ref:`rst-vscode`
+* :ref:`vs-code-extensions-addon`
+    * :ref:`tools-blender-vscode`
+    * :ref:`tools-pydocstring-generator-vscode`
+    * :ref:`tools-rst-vscode`
 
 
-.. _vs-code-extensions:
+.. _vs-code-extensions-addon:
 
 VSCode extensions
 #################
 
 
-.. _pydocstring-generator-vscode:
+.. _tools-blender-vscode:
+
+Blender Development
+*******************
+
+
+.. note::
+    Tools to simplify Blender development. Developed by `Jacques Lucke <https://github.com/JacquesLucke>`_.
+
+
+* Install `blender development <https://marketplace.visualstudio.com/items?itemName=JacquesLucke.blender-development>`_
+
+
+.. _tools-pydocstring-generator-vscode:
 
 Python Docstring Generator
 **************************
@@ -38,7 +52,7 @@ Python Docstring Generator
 
 |
 
-.. _rst-vscode:
+.. _tools-rst-vscode:
 
 reStructuredText Syntax highlighting
 ************************************
diff --git a/docs/source/spelling_wordlist.txt b/docs/source/spelling_wordlist.txt
index ff8fffd..f99f4c7 100644
--- a/docs/source/spelling_wordlist.txt
+++ b/docs/source/spelling_wordlist.txt
@@ -27,4 +27,5 @@ addon
 namespace
 qasm
 statevector
-uncorrectable
\ No newline at end of file
+uncorrectable
+ubuntu
\ No newline at end of file
diff --git a/pytest.ini b/pytest.ini
new file mode 100644
index 0000000..62d5d56
--- /dev/null
+++ b/pytest.ini
@@ -0,0 +1,3 @@
+[pytest]
+testpaths=tests/
+norecursedirs=tests/helpers
\ No newline at end of file
diff --git a/quantum_nodes/__init__.py b/quantum_nodes/__init__.py
index 37ec480..7163655 100644
--- a/quantum_nodes/__init__.py
+++ b/quantum_nodes/__init__.py
@@ -1,29 +1,14 @@
-"""
-Copyright (C) 2021-2022 Quantum Creative Group.\
-contact@quantum-nodes.com.
-
-Created by Quantum-Creative-Group
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program. If not, see <http://www.gnu.org/licenses/>.
-"""
+import os
+import sys
+import site
+from pathlib import Path
 
 bl_info = {
     "name": "Quantum Nodes",
     "author": "Quantum Creative Group",
     "version": (0, 1, 2),
     "blender": (2, 93, 0),
-    "location": "Animation Nodes Editor",
+    "location": "Animation Nodes",
     "description": "Animation Nodes extension which implements quantum computing tools.",
     "warning": "This version is still in development.",
     "doc_url": "https://quantum-creative-group.github.io/quantum_nodes/",
@@ -31,6 +16,11 @@
     "category": "Node",
 }
 
+# Add user default folders where pip will install some of the dependencies
+# This is because some folders may not be writable
+sys.path.append(os.path.abspath(site.USER_SITE))
+sys.path.append(os.path.join(os.path.abspath(Path(site.USER_SITE).parent), "Scripts"))
+
 import addon_utils
 from . import auto_load
 
diff --git a/requirements.txt b/requirements.txt
index dab7cc9..4f84f9b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,6 +10,9 @@ sphinx-rtd-theme
 sphinxcontrib-spelling
 fake-bpy-module-latest
 
+blender-addon-tester
+pytest
+
 scipy
 numpy
 pillow
diff --git a/scripts/load.py b/scripts/load.py
new file mode 100644
index 0000000..00ab453
--- /dev/null
+++ b/scripts/load.py
@@ -0,0 +1,143 @@
+"""Run the test suite inside blender."""
+
+import os
+import sys
+from pathlib import Path
+
+# Make utils.py functions available in this file
+sys.path.append(os.path.abspath("."))
+
+from scripts.utils import TerminalDisplay as TERM
+from scripts.utils import PackageAndAddonUtils as PAU
+from scripts.utils import FilesUtils
+
+print(f"{TERM.LIGHT_BLUE}{TERM.centered_str(' LOAD PYTEST ', '=')}{TERM.RESET}")
+print("Running file:", __file__, "from Blender.")
+
+# +---------------------------------------------------------+
+# + GET TEST SUITE CONFIGURATION FROM ENVIRONMENT VARIABLES +
+# +---------------------------------------------------------+
+
+# Make sure to have BLENDER_ADDON_TO_TEST set as an environment variable first
+ADDON = os.environ.get("BLENDER_ADDON_TO_TEST", False)
+if not ADDON:
+    print("ERROR: no add-on to test was found in the 'BLENDER_ADDON_TO_TEST' environment variable.")
+    sys.exit(1)
+
+# Set any value to the BLENDER_ADDON_COVERAGE_REPORTING environment variable to enable it
+COVERAGE_REPORTING = os.environ.get("BLENDER_ADDON_COVERAGE_REPORTING", False)
+
+# The Pytest tests/ path can be overridden through the BLENDER_ADDON_TESTS_PATH environment variable
+default_tests_dir = Path(ADDON).parent.joinpath("tests")
+TESTS_PATH = os.environ.get("BLENDER_ADDON_TESTS_PATH", default_tests_dir.as_posix())
+
+# +----------------------+
+# + INSTALL REQUIREMENTS +
+# +----------------------+
+
+PAU.reload_available_modues()
+
+try:
+    import PIL
+    import scipy
+    import numpy
+    import qiskit
+    import qiskit_finance
+    import qiskit_machine_learning
+
+    import pytest
+    import blender_addon_tester
+
+except Exception as e:
+    print(f"{TERM.LIGHT_YELLOW}Missing module...{TERM.RESET}", e)
+    print(f"{TERM.LIGHT_YELLOW}Trying to install missing dependencies...{TERM.RESET}")
+    try:
+        PAU.install_py_requirements(os.path.join(os.path.abspath("./scripts"), "requirements.txt"))
+        PAU.reload_available_modues()
+    except Exception as e:
+        print(e)
+        sys.exit(1)
+
+# Import unit testing utils functions
+import blender_addon_tester.addon_helper as BAT
+
+
+class SetupPlugin:
+    """Setup class for pytest."""
+
+    def __init__(self, addon: str, addon_dir: str = os.path.abspath("./local_addon/")):
+        """
+        Init method of the class.
+
+        Args:
+            addon (str): absolute path to the addon (zip file).
+            addon_dir (str, optional): absolute path to the local addon path.
+                                       Defaults to: os.path.abspath("./local_addon/").
+        """
+
+        self.root = Path(__file__).parent.parent
+        self.addon = addon
+        self.addon_dir = addon_dir
+        self.bpy_module = None
+        self.zfile = None
+
+    def pytest_configure(self, config: dict):
+        """
+        Configure pytest.
+
+        Args:
+            config (dict): configuration.
+        """
+
+        print("PyTest configure...")
+
+        self.bpy_module, self.zfile = BAT.zip_addon(self.addon, self.addon_dir)
+        BAT.change_addon_dir(self.bpy_module, self.addon_dir)
+        BAT.install_addon(
+            os.environ.get(f"{PAU.ANIMATION_NODES['module']}_module", None),
+            os.environ.get(f"{PAU.ANIMATION_NODES['module']}_path", None)
+        )
+        BAT.install_addon(self.bpy_module, self.zfile)
+        config.cache.set("bpy_module", self.bpy_module)
+
+        print("PyTest configure successful!")
+
+    def pytest_unconfigure(self):
+        """Unconfigure pytest."""
+
+        print("PyTest unconfigure...")
+
+        # Cleanup zip files
+        print("Cleaning up - zip files")
+        exclude = [os.path.abspath("./cache")]
+        FilesUtils.remove_files_matching_pattern(self.root, exclude_folders=exclude, pattern="*.zip")
+
+        BAT.cleanup(None, self.bpy_module, os.path.join(self.addon_dir, "addons", self.bpy_module))
+
+        # TODO: find a better fix to "[WinError 5] Access denied:
+        # '[....]\\local_addon\\addons\\animation_nodes\\algorithms\\hashing\\murmurhash3.cp39-win_amd64.pyd'"
+        try:
+            an_module = os.environ.get(f"{PAU.ANIMATION_NODES['module']}_module", None)
+            an_local_addon_path = os.path.join(self.addon_dir, "addons", an_module)
+            BAT.cleanup(None, an_module, an_local_addon_path)
+        except BaseException as exception:
+            print(f"{TERM.LIGHT_YELLOW}WARNING: failed to clean animation_nodes \
+directory ({an_local_addon_path}).{TERM.RESET}")
+            print(exception)
+
+        print("PyTest unconfigure successful!")
+
+
+try:
+    import pytest
+
+    pytest_main_args = ["-x", TESTS_PATH]
+    if COVERAGE_REPORTING is not False:
+        pytest_main_args += ["--cov", "--cov-report", "term", "--cov-report", "xml"]
+    exit_val = pytest.main(pytest_main_args, plugins=[SetupPlugin(ADDON)])
+
+except Exception as e:
+    print(e)
+    exit_val = 1
+
+sys.exit(exit_val)
diff --git a/scripts/requirements.txt b/scripts/requirements.txt
new file mode 100644
index 0000000..e074c00
--- /dev/null
+++ b/scripts/requirements.txt
@@ -0,0 +1,14 @@
+# Requirements for unit tests
+wheel
+pyenchant
+myst-parser
+
+blender-addon-tester
+pytest
+
+scipy
+numpy
+pillow
+qiskit
+qiskit-finance
+qiskit-machine-learning
\ No newline at end of file
diff --git a/scripts/setup_animation_nodes.ps1 b/scripts/setup_animation_nodes.ps1
new file mode 100644
index 0000000..10802c7
--- /dev/null
+++ b/scripts/setup_animation_nodes.ps1
@@ -0,0 +1,29 @@
+param(
+    [string]$animation_nodes = "./animation_nodes/",
+    [string]$quantum_nodes = "./",
+    [string]$site_packages
+)
+
+Write-Output "---------- SETUP ANIMATION NODES: START ---------"
+
+Write-Output "STEP 1: replace __init__.py file"
+
+Remove-Item $animation_nodes/__init__.py
+Copy-Item $quantum_nodes/docs/_static/animation_nodes_init_replacement_file.txt -Destination $animation_nodes/__init__.py
+
+Write-Output "STEP 2: edit preferences.py"
+
+$file = "$animation_nodes/preferences.py"
+$find = "return bpy.app.version"
+$replace = "return bpy.app.version if bpy.app.version is not None else (2, 93, 0)"
+(Get-Content -Path $file -Raw) -replace $find, $replace | Set-Content -Path $file -NoNewLine
+
+Write-Output "STEP 3: remove '@persistent' decorators"
+
+"$PSScriptRoot\..\docs\replace_matching_string_in_files.ps1 -folder ./animation_nodes/"
+
+Write-Output "STEP 4: move animation_nodes to 'site-packages/'"
+
+Copy-Item $animation_nodes -Destination $site_packages -Recurse
+
+Write-Output "----------- SETUP ANIMATION NODES: END ----------"
diff --git a/scripts/setup_animation_nodes.sh b/scripts/setup_animation_nodes.sh
new file mode 100644
index 0000000..3abf2d8
--- /dev/null
+++ b/scripts/setup_animation_nodes.sh
@@ -0,0 +1,26 @@
+#!/bin/bash
+
+SITE_PACKAGES=$1
+ANIMATION_NODES=$2
+QUANTUM_NODES=$3
+
+echo "---------- SETUP ANIMATION NODES: START ---------"
+
+echo "STEP 1: replace __init__.py file"
+
+rm $ANIMATION_NODES/__init__.py
+cp $QUANTUM_NODES/docs/_static/animation_nodes_init_replacement_file.txt $ANIMATION_NODES/__init__.py
+
+echo "STEP 2: edit preferences.py"
+
+find $ANIMATION_NODES/ -type f -name "*.py" -exec sed -i 's/return bpy.app.version/return bpy.app.version if bpy.app.version is not None else (2, 93, 0)/g' {} +
+
+echo "STEP 3: remove '@persistent' decorators"
+
+find $ANIMATION_NODES/ -type f -name "*.py" -exec sed -i 's/@persistent/#@persistent/g' {} +
+
+echo "STEP 4: move animation_nodes to 'site-packages/'"
+
+sudo cp -r $ANIMATION_NODES $SITE_PACKAGES
+
+echo "----------- SETUP ANIMATION NODES: END ----------"
diff --git a/scripts/test.py b/scripts/test.py
new file mode 100644
index 0000000..2a688c6
--- /dev/null
+++ b/scripts/test.py
@@ -0,0 +1,91 @@
+"""Script to run the test suite for a given os and blender version."""
+import os
+import sys
+import zipfile
+from pathlib import Path
+
+from scripts.utils import PackageAndAddonUtils as PAU
+from scripts.utils import TerminalDisplay as TERM
+from scripts.utils import FilesUtils
+from scripts.utils import parser
+
+print(f"{TERM.LIGHT_BLUE}{TERM.centered_str(' TEST SUITE: START ', '=')}{TERM.RESET}")
+
+PAU.reload_available_modues()
+
+# Check that blender-addon-tester is installed
+try:
+    import blender_addon_tester as BAT
+except Exception as e:
+    print(e)
+    sys.exit(1)
+
+if __name__ == "__main__":
+
+    args = parser.parse_args()
+
+    if args.b is None:
+        print(f"{TERM.LIGHT_RED}ERROR: -b option is None.{TERM.RESET}")
+        parser.parse_args(['-h'])
+
+    blender = args.b
+
+    if args.os is None:
+        print(f"{TERM.LIGHT_RED}ERROR: -os option is None.{TERM.RESET}")
+        parser.parse_args(['-h'])
+
+    system = args.os
+
+    if not any(system == supported_os for supported_os in ['macos-latest', 'ubuntu-latest', 'windows-latest']):
+        print(f"{TERM.LIGHT_RED}ERROR: -os option must be one of: ['macos-latest', 'ubuntu-latest', 'windows-latest'].{TERM.RESET}")  # noqa: E501
+        parser.parse_args(['-h'])
+
+    module = "quantum_nodes"
+    here = Path(__file__).parent
+    addon = os.path.join(os.path.abspath('.'), module)
+    cache = os.path.abspath(here.joinpath("../cache").as_posix())
+    python = PAU.get_python_version(blender)
+
+    try:
+        # Cleanup '__pychache__' folders in the module folder
+        FilesUtils.remove_folders_matching_pattern(addon)
+
+        # Download addons on which this add-on depends
+        PAU.ANIMATION_NODES["path"] = PAU.download_blender_addon(f"{PAU.ANIMATION_NODES[system]}_py{python}.zip",
+                                                                 f"{PAU.ANIMATION_NODES['module']}_py{python}", cache)
+        os.environ[f"{PAU.ANIMATION_NODES['module']}_module"] = PAU.ANIMATION_NODES['module']
+        os.environ[f"{PAU.ANIMATION_NODES['module']}_path"] = PAU.ANIMATION_NODES['path']
+
+        # Zip addon
+        print(f"Zipping folder: {addon}")
+        zipf = zipfile.ZipFile(module + ".zip", 'w', zipfile.ZIP_DEFLATED)
+        FilesUtils.zipdir("./" + module, zipf)
+        zipf.close()
+        addon = os.path.join(os.path.abspath("."), module + ".zip")
+
+    except Exception as e:
+        print(e)
+        exit_val = 1
+
+    # Custom configuration
+    config = {
+        "blender_load_tests_script": os.path.abspath(here.joinpath("load.py").as_posix()),
+        "coverage": False,
+        "tests": os.path.abspath(here.joinpath("../tests").as_posix()),
+        "blender_cache": os.path.abspath(here.joinpath("../cache").as_posix())
+    }
+
+    try:
+        # Setup custom blender cache (where the blender versions will be downloaded and extracted)
+        # The blender_addon_tester module raises an error when passed as a key in the config dict
+        if config.get("blender_cache", None):
+            os.environ["BLENDER_CACHE"] = config["blender_cache"]
+            config.pop("blender_cache")
+
+        exit_val = BAT.test_blender_addon(addon_path=addon, blender_revision=blender, config=config)
+    except Exception as e:
+        print(e)
+        exit_val = 1
+
+    print(f"{TERM.LIGHT_BLUE}{TERM.centered_str(' TEST SUITE: END ', '=')}{TERM.RESET}")
+    sys.exit(exit_val)
diff --git a/scripts/utils.py b/scripts/utils.py
new file mode 100644
index 0000000..6f5d284
--- /dev/null
+++ b/scripts/utils.py
@@ -0,0 +1,244 @@
+"""Utility functions and classes to setup the unit testing environment."""
+
+import os
+import sys
+import site
+import shutil
+import fnmatch
+import zipfile
+import requests
+import argparse
+import subprocess
+from pathlib import Path
+from importlib import invalidate_caches
+
+# Parser for test.py
+parser = argparse.ArgumentParser(description="Add-on test suite")
+parser.add_argument(
+    "-b",
+    metavar="Blender version",
+    type=str,
+    nargs='?',
+    default="3.0.0",
+    help="Version of Blender to test."
+)
+parser.add_argument(
+    "-os",
+    metavar="Operating system",
+    type=str,
+    nargs='?',
+    default="ubuntu",
+    help="Operating system on which to run tests: ['macos-latest', 'ubuntu-latest', 'windows-latest']."
+)
+
+
+class TerminalDisplay:
+    """Useful tools to better the messages displayed in the terminal."""
+
+    # List of colors which can be used to color texts in the terminal.
+    LIGHT_RED = '\033[91m'
+    LIGHT_GREEN = '\033[92m'
+    LIGHT_YELLOW = '\033[93m'
+    LIGHT_BLUE = '\033[94m'
+    LIGHT_MAGENTA = '\033[95m'
+    LIGHT_CYAN = '\033[96m'
+
+    UNDERLINE = '\033[4m'
+    RESET = '\033[0m'
+    BOLD = '\033[1m'
+
+    @classmethod
+    def centered_str(cls, message: str, char: str = "-") -> str:
+        """
+        Generate a line full of 'char' with the given message at the center.
+
+        Args:
+            message (str): message to display.
+            char (str, optional): char with which to fill the line. Defaults to "-".
+
+        Returns:
+            str: generated line
+        """
+
+        terminal_size = shutil.get_terminal_size((80, 20))
+        return message.center(terminal_size.columns, char)
+
+
+class PackageAndAddonUtils:
+    """Utility methods to manage python packages and blender add-ons."""
+
+    ANIMATION_NODES = {
+        "module": "animation_nodes",
+        "path": "",
+        "windows-latest": "https://github.com/JacquesLucke/animation_nodes/releases/download/master-cd-build/animation_nodes_v2_3_windows",     # noqa: E501
+        "ubuntu-latest": "https://github.com/JacquesLucke/animation_nodes/releases/download/master-cd-build/animation_nodes_v2_3_linux",        # noqa: E501
+        "macos-latest": "https://github.com/JacquesLucke/animation_nodes/releases/download/master-cd-build/animation_nodes_v2_3_macOS",         # noqa: E501
+    }
+
+    @classmethod
+    def reload_available_modues(cls):
+        # Add user default folders where pip will install some of the dependencies
+        # This is because some folders may not be writable
+        USER_SITE = site.getusersitepackages()
+        sys.path.append(os.path.abspath(USER_SITE))
+        sys.path.append(os.path.join(os.path.abspath(Path(USER_SITE).parent), "Scripts"))
+        # Force to reload list of available modules and packages
+        invalidate_caches()
+
+    @classmethod
+    def get_python_version(cls, blender: str) -> str:
+        """
+        Get the python version used by the given blender version.
+
+        Args:
+            blender (str): blender version (format: major.minor.patch).
+
+        Returns:
+            str: python version used by Blender (MajorMinor).
+        """
+
+        if any(version in blender for version in ["2.9", "3.0"]):
+            return "39"
+
+        if any(version in blender for version in ["3.1", "3.2", "3.3", "3.4"]):
+            return "310"
+
+        raise ValueError(f"Unable to determine which python version is used by the given blender version ({blender})")
+
+    @classmethod
+    def install_py_package(cls, package: str, force: bool = False) -> None:
+        """
+        Install the given python package.
+
+        Args:
+            package (str): name of the package.
+            force (bool, optional): force reinstall. Defaults to False.
+        """
+
+        args = [sys.executable, "-m", "pip", "install", package, "--user"]
+        if force:
+            args.append("--force-reinstall")
+        subprocess.check_call(args)
+
+    @classmethod
+    def install_py_requirements(cls, requirements: str, force: bool = False) -> None:
+        """
+        Install python packages from the given requirements file.
+
+        Args:
+            requirements (str): path to the requirements file.
+            force (bool, optional): force reinstall. Defaults to False.
+        """
+
+        args = [sys.executable, "-m", "pip", "install", "-r", requirements, "--upgrade", "--user"]
+        if force:
+            args.append("--force-reinstall")
+        subprocess.check_call(args)
+
+    @classmethod
+    def install_local_py_package(cls, path: str, force: bool = False) -> None:
+        """
+        Install a local package.
+
+        Args:
+            path (str): path to the folder of the local package.
+            force (bool, optional): force reinstall. Defaults to False.
+        """
+
+        args = [sys.executable, "-m", "pip", "install", "-e", path]
+        if force:
+            args.append("--force-reinstall")
+        subprocess.check_call(args)
+
+    @classmethod
+    def download_blender_addon(cls, url: str, name: str, dest: str) -> str:
+        """
+        Download the given blender add-on and put it in the destination folder.
+
+        Args:
+            url (str): base url to download the file.
+            name (str): name of the add-on's folder.
+            dest (str): destination of the downloaded file.
+
+        Returns:
+            str: path to the zip file
+        """
+
+        filename = f"{name}.zip"
+        path = os.path.abspath(os.path.join(dest, filename))
+
+        if not os.path.exists(dest):
+            print(f"The given path does not exist: {dest}")
+            os.mkdir(dest)
+            print(f"Created destination folder: {dest}")
+
+        if os.path.exists(os.path.join(dest, filename)):
+            print(f"{name} - found: {path}")
+            return path
+
+        # Else, download it and save it at the given destination
+        print(f"Downloading: {filename} ({url})")
+        response = requests.get(url)
+        open(os.path.join(dest, filename), "wb").write(response.content)
+
+        return path
+
+
+class FilesUtils:
+    """Methods to manage files and folders when setting up the unit testing environment."""
+
+    @classmethod
+    def zipdir(cls, path: str, ziph: zipfile.ZipFile) -> None:
+        """
+        Zip the given folder.
+
+        Args:
+            path (str): path to the folder.
+            ziph (zipfile.ZipFile): zip file.
+        """
+
+        # Inspired from: https://www.tutorialspoint.com/How-to-zip-a-folder-recursively-using-Python
+        # ziph is zipfile handle
+        for root, dirs, files in os.walk(path):
+            for file in files:
+                ziph.write(os.path.join(root, file))
+
+    @classmethod
+    def remove_files_matching_pattern(cls, root_folder: str, exclude_folders: list[str] = [],
+                                      pattern: str = "*.zip") -> None:
+        """
+        Remove files which name match the given pattern.
+
+        Inspired from:
+        https://thispointer.com/python-how-to-remove-files-by-matching-pattern-wildcards-certain-extensions-only/
+
+        Args:
+            root_folder (str): root folder.
+            exclude_folders (list[str], optional): list of folders to exclude from this function. Defaults to [].
+            pattern (str, optional): pattern of the files to remove. Defaults to "*.zip".
+        """
+        # Get a list of all files in directory
+        for rootDir, subdirs, filenames in os.walk(root_folder):
+            # Find the files that matches the given pattern
+            for filename in fnmatch.filter(filenames, pattern):
+                try:
+                    if os.path.dirname(os.path.join(rootDir, filename)) not in exclude_folders:
+                        os.remove(os.path.join(rootDir, filename))
+                except OSError:
+                    print("Error while deleting file")
+
+    @classmethod
+    def remove_folders_matching_pattern(cls, root_folder: str, pattern: str = "__pycache__") -> None:
+        """
+        Remove folders which name match the given pattern.
+
+        Args:
+            root_folder (str): root folder.
+            pattern (str, optional): pattern of the folders to remove. Defaults to "__pycache__".
+        """
+        # Get a list of all files in directory
+        for rootDir, subdirs, filenames in os.walk(root_folder):
+            # Find the files that matches the given pattern
+            for subdir in subdirs:
+                if subdir == pattern:
+                    shutil.rmtree(os.path.join(rootDir, subdir), ignore_errors=True)
diff --git a/tests/test_hello_world.py b/tests/test_hello_world.py
new file mode 100644
index 0000000..0b558bb
--- /dev/null
+++ b/tests/test_hello_world.py
@@ -0,0 +1,9 @@
+import bpy
+import pytest
+
+
+def test_hello_world():
+
+    variable = "HelloWorld"
+
+    assert "HelloWorld" == variable