Add PyPy3 tests + documentation

Author: veluca93

Dockerfile

@@ -17,6 +17,7 @@ RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y \
     openjdk-8-jdk-headless \
     php-cli \
     postgresql-client \
+    pypy3 \
     python3-pip \
     python3.12 \
     python3.12-dev \

cmstestsuite/Tests.py

@@ -49,11 +49,12 @@
 LANG_PASCAL = "Pascal / fpc"
 LANG_PHP = "PHP"
 LANG_PYTHON3 = "Python 3 / CPython"
+LANG_PYPY3 = "Python 3 / PyPy3"
 LANG_RUST = "Rust"
 LANG_C_SHARP = "C# / Mono"
 ALL_LANGUAGES = (
     LANG_CPP, LANG_CPP14, LANG_CPP17, LANG_C, LANG_HS, LANG_JAVA, LANG_PASCAL,
-    LANG_PHP, LANG_PYTHON3, LANG_RUST, LANG_C_SHARP
+    LANG_PHP, LANG_PYTHON3, LANG_PYPY3, LANG_RUST, LANG_C_SHARP
 )
 NON_INTERPRETED_LANGUAGES = (
     LANG_C, LANG_CPP, LANG_CPP14, LANG_CPP17, LANG_PASCAL

docs/Installation.rst

@@ -214,7 +214,7 @@ To install CMS and its Python dependencies on Ubuntu, you can issue:
          python3-xdg python3-jinja2
 
     # Optional.
-    # sudo apt-get install python3-yaml python3-sphinx python3-cups python3-pypdf2
+    # sudo apt-get install python3-yaml python3-sphinx python3-cups python3-pypdf2 pypy3
 
 Method 4: Using ``pacman`` on Arch Linux
 ----------------------------------------
@@ -239,7 +239,7 @@ To install CMS python dependencies on Arch Linux (again: assuming you did not us
     # https://aur.archlinux.org/packages/patool/
 
     # Optional.
-    # sudo pacman -S --needed python-yaml python-sphinx python-pycups
+    # sudo pacman -S --needed python-yaml python-sphinx python-pycups pypy3
     # Optionally install the following from AUR.
     # https://aur.archlinux.org/packages/python-pypdf2/