(WIP) - Resolving bundler ruby version failure

Author: pmcmaw

.travis.yml

@@ -2,12 +2,17 @@ sudo: false
 language: ruby
 cache: bundler
 before_install:
-  # https://github.com/bundler/bundler/issues/3558
-  gem update bundler
+   bundle -v
 script: env COVERAGE=yes bundle exec rake
 matrix:
   fast_finish: true
   include:
+  - rvm: '2.5'
+    env: PUPPET_GEM_VERSION='~> 6.0'
+  - rvm: '2.4'
+    env: PUPPET_GEM_VERSION='~> 6.0'
+  - rvm: '2.3'
+    env: PUPPET_GEM_VERSION='~> 6.0'
   - rvm: '2.4'
     env: PUPPET_GEM_VERSION='~> 5.0'
   - rvm: '2.3'

puppetlabs_spec_helper.gemspec

@@ -26,7 +26,7 @@ Gem::Specification.new do |spec|
   spec.add_runtime_dependency 'rspec-puppet', '~> 2.0'
   spec.add_runtime_dependency 'pathspec', '~> 0.2.1'
 
-  spec.add_development_dependency 'bundler', '~> 1.12'
+  spec.add_development_dependency 'bundler'
   spec.add_development_dependency 'pry'
   spec.add_development_dependency 'puppet'
   spec.add_development_dependency 'rake', '~> 10.0'