Rationalize the Rakefile tasks

Ensure test:all runs the full suite, including examples, and guard
lint task loading so missing tooling does not abort tests.

Author: evolve75

Gemfile.lock

@@ -98,7 +98,7 @@ DEPENDENCIES
   rtagstask (~> 0.0)
   rubocop (~> 1.84)
   rubocop-rake (~> 0.7)
-  rubocop-rspec (~> 3.9)
+  rubocop-rspec (~> 3.0)
   rubytree!
   simplecov (~> 0.22)
   simplecov-lcov (~> 0.9)

Rakefile

@@ -35,23 +35,16 @@
 # frozen_string_literal: true
 
 require 'rubygems'
+require 'bundler'
 
-# @todo: Check if Bundler needs to be `require`d.
 GEM_SPEC = Bundler.load_gemspec(File.join(__dir__, 'rubytree.gemspec'))
 
 PKG_NAME = GEM_SPEC.name
 PKG_VER  = GEM_SPEC.version
 GEM_NAME = "#{PKG_NAME}-#{PKG_VER}.gem"
 
 desc 'Default Task (Run the tests)'
-task :default do
-  if ENV['COVERAGE']
-    Rake::Task['test:coverage'].invoke
-  else
-    Rake::Task['test:unit'].invoke
-    Rake::Task['spec'].invoke
-  end
-end
+task :default => 'test:all'
 
 desc 'Display the current gem version'
 task :version do
@@ -71,7 +64,6 @@ end
 
 namespace :doc do # ................................ Documentation
   begin
-    gem 'rdoc', '>= 6.4.0' # To get around a stupid bug in Ruby 1.9.2 Rake.
     require 'rdoc/task'
     Rake::RDocTask.new do |rdoc|
       rdoc.rdoc_dir = 'rdoc'
@@ -153,31 +145,18 @@ rescue LoadError
 end
 
 # ................................ Gem related
-namespace :gem do
-  require 'rubygems/package_task'
-  Gem::PackageTask.new(GEM_SPEC) do |pkg|
-    pkg.need_zip = true
-    pkg.need_tar = true
-  end
-
-  desc 'Push the gem into the Rubygems and Github repositories'
-  task push: :gem do
-    github_repo = 'https://rubygems.pkg.github.com/evolve75'
-
-    # This pushes to the standard RubyGems registry
-    sh "gem push pkg/#{GEM_NAME}"
-
-    # For github, the credentials key is assumed to be github
-    # See: https://docs.github.com/en/packages/working-with-a-github-packages-registry/
-    sh "gem push --key github --host #{github_repo} pkg/#{GEM_NAME}"
-  end
-end
+require 'bundler/gem_helper'
+Bundler::GemHelper.install_tasks
 
 # ................................ Ruby linting
-require 'rubocop/rake_task'
+begin
+  require 'rubocop/rake_task'
 
-RuboCop::RakeTask.new(:rubocop) do |t|
-  t.options = ['--display-cop-names']
-  t.requires << 'rubocop-rake'
-  t.requires << 'rubocop-rspec'
+  RuboCop::RakeTask.new(:rubocop) do |t|
+    t.options = ['--display-cop-names']
+    t.requires << 'rubocop-rake'
+    t.requires << 'rubocop-rspec'
+  end
+rescue LoadError
+  # RuboCop not available.
 end

rubytree.gemspec

@@ -70,11 +70,11 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'bundler', '~> 2.6'
   s.add_development_dependency 'rake', '~> 13.3'
   s.add_development_dependency 'rdoc', '~> 7.1'
-  s.add_development_dependency 'rspec', '~> 3.13'
   s.add_development_dependency 'rtagstask', '~> 0.0'
   s.add_development_dependency 'rubocop', '~> 1.84'
+  s.add_development_dependency 'rubocop-rspec', '~> 3.0'
   s.add_development_dependency 'rubocop-rake', '~> 0.7'
-  s.add_development_dependency 'rubocop-rspec', '~> 3.9'
+  s.add_development_dependency 'rspec', '~> 3.13'
   s.add_development_dependency 'simplecov', '~> 0.22'
   s.add_development_dependency 'simplecov-lcov', '~> 0.9'
   s.add_development_dependency 'test-unit', '~> 3.7'