`copilot-libraries`: Introduce testing infrastructure for `Copilot.Library`. Refs #475.

[ivanperez-keera]

Introduce minimal testing infrastructure for copilot-libraries, focusing only on Copilot.Library.PTLTL, using both the interpreter and Z3 to demonstrate how to test a sample property, as prescribed in the solution proposed for #475.

[ivanperez-keera]

Change Manager: Verified that:

• Solution is implemented:

  • [X] The code proposed compiles and passes all tests. Details: Build log: https://app.travis-ci.com/github/Copilot-Language/copilot/builds/268024914

  • [X] The solution proposed produces the expected result. Details: The following Dockerfile checks that copilot-libraries's tests can be executed, in which case it prints the message Success:

    
    FROM ubuntu:focal

  RUN apt-get update

  RUN apt-get install --yes libz-dev RUN apt-get install --yes git

  RUN apt-get install --yes wget RUN mkdir -p $HOME/.ghcup/bin RUN wget https://downloads.haskell.org/~ghcup/0.1.19.2/x86_64-linux-ghcup-0.1.19.2 -O $HOME/.ghcup/bin/ghcup

  RUN chmod a+x $HOME/.ghcup/bin/ghcup ENV PATH=$PATH:/root/.ghcup/bin/ ENV PATH=$PATH:/root/.cabal/bin/ RUN apt-get install --yes curl RUN apt-get install --yes gcc make libgmp3-dev g++

  SHELL ["/bin/bash", "-c"]

  RUN ghcup install ghc 9.4.7 RUN ghcup install cabal 3.8 RUN ghcup set ghc 9.4.7 RUN cabal update

  RUN apt-get install --yes z3

  CMD git clone $REPO && \ cd $NAME && \ git checkout $COMMIT && \ cd copilot-libraries && \ cabal test copilot-libraries:unit-tests && \ echo Success

  Command (adjust repo as necessary):

  $ docker run -e "REPO=https://github.com/ivanperez-keera/copilot" -e "NAME=copilot" -e "COMMIT=15ca5779c64e89dd7dc8fa8f5296baed129d4dd8" -it copilot-verify-475

• [X] Implementation is documented. Details: Change to tests. No changes to the public documentation are needed. Comments are added to all new modules and functions.
• [X] Change history is clear.
• [X] Commit messages are clear.
• [X] Changelogs are updated.
• [X] Examples are updated. Details: No updates needed.
• [X] Required version bumps are evaluated. Details: Bump not needed. This is a change to the tests.