Test coverage meta-issue

[raxod502]

This issue tracks languages which have broken tests that are currently skipped by CI.

• lsp
  • c
  • c++
  • clojure
  • dart
  • elixir
  • elm
  • erlang
  • fortran
  • go
  • haskell
  • java
  • julia
  • lua
  • mariadb
  • mysql
  • objectivec
  • ocaml
  • php
  • postgresql
  • powershell
  • reasonml
  • ruby
  • rust
  • sqlite
  • swift
  • tex
  • vim
• repl/runrepl/scope
  • powershell
  • ruby
• scope
  • a+

Most of the LSP tests have simply not been attempted yet, although a few have encountered blockers whereby the language server fails to return any completions in the test environment even though it works interactively. The repl/runrepl/scope tests generally fail due to some unexpected interaction between the language REPL and the pty interface which causes the REPL to ignore all input sent to it by the test framework.

For the A+ scope test, see #40.