fix: use mise for idiomatic ruby file parsing (#429)

* fix: remove custom .ruby-version parsing

* test: assert against specific ruby 2 version

makes sure .ruby-version is properly being parsed

* test: add ruby version output to ruby server tests

* docs: some future ruby TODOs

core/providers/ruby/ruby.go

@@ -249,10 +249,6 @@ func (p *RubyProvider) InstallMisePackages(ctx *generate.GenerateContext, miseSt
 		miseStep.Version(ruby, envVersion, varName)
 	}
 
-	if versionFile, err := ctx.App.ReadFile(".ruby-version"); err == nil {
-		miseStep.Version(ruby, utils.ExtractSemverVersion(string(versionFile)), ".ruby-version")
-	}
-
 	if gemfileVersion := parseVersionFromGemfile(ctx); gemfileVersion != "" {
 		miseStep.Version(ruby, gemfileVersion, "Gemfile")
 	}
@@ -261,9 +257,12 @@ func (p *RubyProvider) InstallMisePackages(ctx *generate.GenerateContext, miseSt
 
 	miseStep.AddSupportingAptPackage("libyaml-dev")
 	miseStep.AddSupportingAptPackage("libjemalloc-dev")
+	// TODO this does not take into account the mise-specified version of ruby, we should pull the resolved version via Mise
 	version := p.getRubyVersion(ctx)
 	version = utils.ExtractSemverVersion(version)
 	semver, err := utils.ParseSemver(version)
+
+	// TODO we should install these via mise, not apt
 	// YJIT in Ruby 3.1+ requires rustc to install
 	if err == nil && semver != nil && semver.Major >= 3 && semver.Minor > 1 {
 		miseStep.AddSupportingAptPackage("rustc")

examples/ruby-2/app.rb

@@ -1 +1 @@
-puts "Hello from Ruby 2"
+puts "Hello from Ruby: #{RUBY_VERSION}"

examples/ruby-2/test.json

@@ -1,5 +1,5 @@
 [
   {
-    "expectedOutput": "Hello from Ruby 2"
+    "expectedOutput": "Hello from Ruby: 2.6.6"
   }
 ]

examples/ruby-rails-api-app/app/controllers/welcome_controller.rb

@@ -1,6 +1,6 @@
 class WelcomeController < ApplicationController
   def index
-    message = "Hello from Rails"
+    message = "Hello from Ruby: #{RUBY_VERSION}"
     render plain: message, content_type: "text/plain"
   end
 end

examples/ruby-rails-api-app/test.json

@@ -4,7 +4,7 @@
       "path": "/",
       "expected": 200,
       "internalPort": 3000,
-      "expectedOutput": "Hello from Rails"
+      "expectedOutput": "Hello from Ruby: 3.1.2"
     }
   }
 ]

examples/ruby-rails-postgres/config/routes.rb

@@ -1,3 +1,3 @@
 Rails.application.routes.draw do
-  get "/" => lambda { |_env| [200, {}, ["OK"]] }
+  get "/" => lambda { |_env| [200, {}, ["Hello from Ruby: #{RUBY_VERSION}"]] }
 end

examples/ruby-rails-postgres/test.json

@@ -4,7 +4,7 @@
       "path": "/",
       "expected": 200,
       "internalPort": 3000,
-      "expectedOutput": "OK"
+      "expectedOutput": "Hello from Ruby: 3.2.1"
     },
     "envs": {
       "DATABASE_URL": "postgresql://rails_user:rails_password@postgres:5432/rails_db"