diff --git a/.gitignore b/.gitignore
index b844b14..e09cea3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,3 @@
 Gemfile.lock
+pkg
+.bundle
diff --git a/.ruby-version b/.ruby-version
new file mode 100644
index 0000000..aedc15b
--- /dev/null
+++ b/.ruby-version
@@ -0,0 +1 @@
+2.5.3
diff --git a/README.md b/README.md
index b9b2f6a..76dc34a 100644
--- a/README.md
+++ b/README.md
@@ -79,6 +79,41 @@ runs faster.
 
 Reads the Puppetfile in the current directory and installs them under the `path` provided as an argument.
 
+### r10k:validate[path]
+The validate rake task will determine if the url is a valid url by connecting 
+to the repository and verififying it actually exists and can be accessed.
+Additional if a branch, tag, or ref is specified in the Puppetfile the validate
+task will also verify that that branch/tag/ref exists in the remote repository.
+
+If you have ever deployed r10k to production only to find out a tag or branch is
+missing this validate task will catch that issue.  
+
+A exit status of 0 is returned if there are no faults, while a 1 is returned if
+any module has a bad status. 
+
+Status emojis can be customized by setting the following environment variables.
+
+Example
+
+ * `GOOD_EMOJI='👍'`
+ * `BAD_EMOJI='😨'`
+
+
+```
+NAME     | URL                                           | REF                            | STATUS
+---------|-----------------------------------------------|--------------------------------|-------
+splunk   | https://github.com/cudgel/splunk.git          | prod                           | 👍
+r10k     | https://github.com/acidprime/r10k             | v3.1.1                         | 👍
+gms      | https://github.com/npwalker/abrader-gms       | gitlab_disable_ssl_verify_s... | 👍
+rbac     | https://github.com/puppetlabs/pltraining-rbac | 2f60e1789a721ce83f8df061e13... | 👍
+acl      | https://github.com/dobbymoodge/puppet-acl.git | master                         | 👍
+deploy   | https://github.com/cudgel/deploy.git          | master                         | 👍
+dotfiles | https://github.com/cudgel/puppet-dotfiles.git | master                         | 👍
+gitlab   | https://github.com/vshn/puppet-gitlab         | 00397b86dfb3487d9df768cbd36... | 👍
+
+👍👍 Puppetfile looks good.👍👍
+```
+
 #### Limitations
 
   * It works only with modules from the [Forge](https://forge.puppetlabs.com), and Git.
diff --git a/Rakefile b/Rakefile
index 19b5c5d..ccca1d2 100644
--- a/Rakefile
+++ b/Rakefile
@@ -3,8 +3,14 @@ require 'rake/clean'
 require 'rubygems'
 require 'bundler/gem_tasks'
 require 'fileutils'
+require 'rspec/core'
+require 'rspec/core/rake_task'
 
 CLEAN.include("pkg/", "tmp/")
 CLOBBER.include("Gemfile.lock")
 
-task :default => [:clean, :build]
+task :default => [:spec]
+
+RSpec::Core::RakeTask.new(:spec) do |spec|
+    spec.pattern = FileList['spec/**/*_spec.rb']
+end
diff --git a/lib/ra10ke.rb b/lib/ra10ke.rb
index 75fad96..19e6bae 100644
--- a/lib/ra10ke.rb
+++ b/lib/ra10ke.rb
@@ -5,15 +5,17 @@
 require 'ra10ke/syntax'
 require 'ra10ke/dependencies'
 require 'ra10ke/install'
+require 'ra10ke/validate'
 require 'git'
 require 'semverse'
-
+require 'r10k/puppetfile'
 module Ra10ke
   class RakeTask < ::Rake::TaskLib
     include Ra10ke::Solve
     include Ra10ke::Syntax
     include Ra10ke::Dependencies
     include Ra10ke::Install
+    include Ra10ke::Validate
 
     attr_accessor :basedir, :moduledir, :puppetfile_path, :puppetfile_name, :force, :purge
 
@@ -32,6 +34,7 @@ def initialize(*args)
         define_task_syntax(*args)
         define_task_dependencies(*args)
         define_task_install(*args)
+        define_task_validate(*args)
       end
     end
 
diff --git a/lib/ra10ke/dependencies.rb b/lib/ra10ke/dependencies.rb
index 27c5737..4b4c6d4 100644
--- a/lib/ra10ke/dependencies.rb
+++ b/lib/ra10ke/dependencies.rb
@@ -69,4 +69,3 @@ def define_task_dependencies(*_args)
 
   end
 end
-
diff --git a/lib/ra10ke/monkey_patches.rb b/lib/ra10ke/monkey_patches.rb
new file mode 100644
index 0000000..2fff6b1
--- /dev/null
+++ b/lib/ra10ke/monkey_patches.rb
@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+class String
+  # colorization
+  def colorize(color_code)
+    "\e[#{color_code}m#{self}\e[0m"
+  end
+
+  def red
+    colorize(31)
+  end
+
+  def green
+    colorize(32)
+  end
+
+  def yellow
+    colorize(33)
+  end
+
+  # removes specified markes from string. 
+  # @return [String] - the string with markers removed
+  def strip_comment(markers = ['#', "\n"])
+    re = Regexp.union(markers)
+    index = (self =~ re)
+    index.nil? ? rstrip : self[0, index].rstrip
+  end
+end
diff --git a/lib/ra10ke/puppetfile_parser.rb b/lib/ra10ke/puppetfile_parser.rb
new file mode 100644
index 0000000..77532be
--- /dev/null
+++ b/lib/ra10ke/puppetfile_parser.rb
@@ -0,0 +1,83 @@
+# it might be desirable to parse the Puppetfile as a string instead of evaling it. 
+# this module allows you to do just that.
+require 'ra10ke/monkey_patches'
+
+module Ra10ke
+    module PuppetfileParser
+
+      # @return [Array] - returns a array of hashes that contain modules with a git source
+      def git_modules(file = puppetfile)
+        modules(file).find_all do |mod|
+          mod[:args].key?(:git)
+        end
+      end
+
+      # @param puppetfile [String] - the absolute path to the puppetfile
+      # @return [Array] - returns an array of module hashes that represent the puppetfile
+      # @example
+      # [{:namespace=>"puppetlabs", :name=>"stdlib", :args=>[]},
+      # {:namespace=>"petems", :name=>"swap_file", :args=>["'4.0.0'"]}]
+      def modules(puppetfile)
+        @modules ||= begin
+          return [] unless File.exist?(puppetfile)
+
+          all_lines = File.read(puppetfile).lines.map(&:strip_comment)
+          # remove comments from all the lines
+          lines_without_comments = all_lines.reject { |line| line.match(/#.*\n/) }.join("\n").delete("\n")
+          lines_without_comments.split('mod').map do |line|
+            next nil if line =~ /^forge/
+            next nil if line.empty?
+
+            parse_module_args(line)
+          end.compact.uniq
+        end
+      end
+
+      # @param data [String] - the string to parse the puppetfile args out of
+      # @return [Array] -  an array of arguments in hash form
+      # @example
+      # {:namespace=>"puppetlabs", :name=>"stdlib", :args=>[]}
+      # {:namespace=>"petems", :name=>"swap_file", :args=>["'4.0.0'"]}
+      def parse_module_args(data)
+        return {} if data.empty?
+        args = data.split(',').map(&:strip)
+        # we can't guarantee that there will be a namespace when git is used
+        # remove quotes and dash and slash
+        namespace, name = args.shift.gsub(/'|"/, '').split(%r{-|/})
+        name ||= namespace
+        namespace = nil if namespace == name
+        {
+          namespace: namespace,
+          name: name,
+          args: process_args(args)
+        }
+      end
+
+      # @return [Array] - returns an array of hashes with the args in key value pairs
+      # @param [Array] - the arguments processed from each entry in the puppetfile
+      # @example
+      # [{:args=>[], :name=>"razor", :namespace=>"puppetlabs"},
+      #  {:args=>[{:version=>"0.0.3"}], :name=>"ntp", :namespace=>"puppetlabs"},
+      #  {:args=>[], :name=>"inifile", :namespace=>"puppetlabs"},
+      #  {:args=>
+      #    [{:git=>"https://github.com/nwops/reportslack.git"}, {:ref=>"1.0.20"}],
+      #   :name=>"reportslack",
+      #   :namespace=>"nwops"},
+      #  {:args=>{:git=>"git://github.com/puppetlabs/puppetlabs-apt.git"},
+      #   :name=>"apt",
+      #   :namespace=>nil}
+      # ]
+      def process_args(args)
+        results = {}
+        args.each do |arg|
+          a = arg.gsub(/'|"/, '').split(/\A\:|\:\s|\=\>/).map(&:strip).reject(&:empty?)
+          if a.count < 2
+            results[:version] = a.first
+          else
+            results[a.first.to_sym] = a.last
+          end
+        end
+        results
+      end
+    end
+end
diff --git a/lib/ra10ke/validate.rb b/lib/ra10ke/validate.rb
new file mode 100644
index 0000000..927e505
--- /dev/null
+++ b/lib/ra10ke/validate.rb
@@ -0,0 +1,126 @@
+# frozen_string_literal: true
+
+require 'ra10ke/monkey_patches'
+require 'tempfile'
+require 'table_print'
+require 'ra10ke/puppetfile_parser'
+require 'English'
+
+module Ra10ke
+  module Validate
+
+    GOOD_EMOJI = ENV['GOOD_EMOJI'] || '👍'
+    BAD_EMOJI = ENV['BAD_EMOJI'] || '😨'
+
+    # Validate the git urls and refs
+    def define_task_validate(*args)
+      desc 'Validate the git urls and branches, refs, or tags'
+      task :validate do
+        gitvalididation = Ra10ke::Validate::Validation.new(get_puppetfile.puppetfile_path)
+        exit_code = 0
+        if gitvalididation.bad_mods?
+          exit_code = 1
+          message = BAD_EMOJI + '  Not all modules in the Puppetfile are valid. '.red + BAD_EMOJI
+        else
+          message = GOOD_EMOJI + '  Puppetfile looks good. '.green + GOOD_EMOJI
+        end
+        tp gitvalididation.sorted_mods, :name, { url: { width: 50 } }, :ref, :status
+        abort(message) if exit_code.positive?
+        puts message
+      end
+    end
+
+    class Validation
+      include Ra10ke::PuppetfileParser
+      
+      attr_reader :puppetfile
+
+      def initialize(file)
+        file ||= './Puppetfile'
+        @puppetfile = File.expand_path(file)
+        abort("Puppetfile does not exist at #{puppetfile}") unless File.readable?(puppetfile)
+      end
+
+      # @return [Boolean] - return true if the ref is valid
+      # @param url [String] - the git string either https or ssh url
+      # @param ref [String] - the ref object, branch name, tag name, or commit sha, defaults to HEAD
+      def valid_ref?(url, ref = 'HEAD')
+        raise ArgumentError unless ref
+        found = all_refs(url).find do |sha, data | 
+          # we don't need to bother with these types
+          next if data[:type] == :pull || data[:type] == :merge_request     
+          # is the name equal to the tag or branch?  Is the commit sha equal?     
+          data[:name].eql?(ref) || sha.slice(0,8).eql?(ref.slice(0,8))
+        end
+        !found.nil?
+      end
+
+      # @return [Hash] - a hash of all the refs associated with the remote repository
+      # @param url [String] - the git string either https or ssh url
+      # @example
+      # {"0ec707e431367bbe2752966be8ab915b6f0da754"=>{:ref=>"refs/heads/74110ac", :type=>:branch, :subtype=>nil, :name=>"74110ac"},
+        # "07bb5d2d94db222dca5860eb29c184e8970f36f4"=>{:ref=>"refs/pull/74/head", :type=>:pull, :subtype=>:head, :name=>"74"},
+        # "156ca9a8ea69e056e86355b27d944e59d1b3a1e1"=>{:ref=>"refs/heads/master", :type=>:branch, :subtype=>nil, :name=>"master"},
+        # "fcc0532bbc5a5b65f3941738339e9cc7e3d767ce"=>{:ref=>"refs/pull/249/head", :type=>:pull, :subtype=>:head, :name=>"249"},
+        # "8d54891fa5df75890ee15d53080c2a81b4960f92"=>{:ref=>"refs/pull/267/head", :type=>:pull, :subtype=>:head, :name=>"267"} }
+      def all_refs(url)
+        data = `git ls-remote --symref #{url}`
+        raise "Error downloading #{url}" unless $CHILD_STATUS.success?
+        data.lines.reduce({}) do |refs, line|
+          sha, ref = line.split("\t")
+          next refs if sha.eql?('ref: refs/heads/master')
+          _, type, name, subtype = ref.chomp.split('/')
+          next refs unless name 
+          type = :tag if type.eql?('tags')
+          type = type.to_sym
+          subtype = subtype.to_sym if subtype
+          type = :branch if type.eql?(:heads)
+          refs[sha] = {ref: ref.chomp, type: type, subtype: subtype, name: name }
+          refs
+        end
+      end
+
+      # @return [Boolean] - return true if the commit sha is valid
+      # @param url [String] - the git string either https or ssh url
+      # @param ref [String] - the sha id
+      def valid_commit?(url, sha)
+        return false if sha.nil? || sha.empty?
+        return true if valid_ref?(url, sha)
+        Dir.mktmpdir do |dir|
+          `git clone --no-tags #{url} #{dir} 2>&1 > /dev/null`
+          Dir.chdir(dir) do
+            `git show #{sha} 2>&1 > /dev/null`
+            $CHILD_STATUS.success?
+          end
+        end
+      end
+
+      # @return [Array[Hash]] array of module information and git status
+      def all_modules
+        begin
+          git_modules(puppetfile).map do |mod|
+            ref = mod[:args][:ref] || mod[:args][:tag] || mod[:args][:branch]
+            valid_ref = valid_ref?(mod[:args][:git], ref) || valid_commit?(mod[:args][:git], mod[:args][:ref])
+            {
+              name: mod[:name],
+              url: mod[:args][:git],
+              ref: ref,
+              valid_ref?: valid_ref,
+              status: valid_ref ? Ra10ke::Validate::GOOD_EMOJI : Ra10ke::Validate::BAD_EMOJI
+            }
+          end
+        end
+      end
+
+      # @return [Boolean] - true if there are any bad mods
+      def bad_mods?
+        all_modules.find_all { |mod| !mod[:valid_ref?] }.count > 0
+      end
+
+      # @return [Hash] - sorts the mods based on good/bad
+      def sorted_mods
+        all_modules.sort_by { |a| a[:valid_ref?] ? 1 : 0 }
+      end
+    end
+  end
+end
diff --git a/ra10ke.gemspec b/ra10ke.gemspec
index 9b28117..0bbe4ec 100644
--- a/ra10ke.gemspec
+++ b/ra10ke.gemspec
@@ -22,4 +22,6 @@ Gem::Specification.new do |spec|
   spec.add_dependency "git"
   spec.add_dependency "solve"
   spec.add_dependency 'semverse', '~> 2.0'
+  spec.add_dependency 'table_print', '~> 1.5.6'
+  spec.add_development_dependency 'rspec', '~> 3.6'
 end
diff --git a/spec/fixtures/Puppetfile b/spec/fixtures/Puppetfile
new file mode 100644
index 0000000..be3659d
--- /dev/null
+++ b/spec/fixtures/Puppetfile
@@ -0,0 +1,43 @@
+# frozen_string_literal: true
+
+forge 'http://forge.puppetlabs.com'
+
+mod 'puppetlabs/inifile',     '2.2.0'
+mod 'puppetlabs/stdlib',      '4.24.0'
+mod 'puppetlabs/concat',      '4.0.0'
+mod 'puppetlabs/ntp',         '6.4.1'
+
+# introduced for tomcat module collaboration with uws
+mod 'puppet-archive', '3.1.1'
+
+mod 'gitlab',
+    git: 'https://github.com/vshn/puppet-gitlab',
+    ref: '00397b86dfb3487d9df768cbd3698d362132b5bf' # master
+
+mod 'r10k',
+    git: 'https://github.com/acidprime/r10k',
+    tag: 'v3.1.1'
+
+mod 'gms',
+    git: 'https://github.com/npwalker/abrader-gms',
+    branch: 'gitlab_disable_ssl_verify_support'
+
+mod 'pltraining-rbac',
+    git: 'https://github.com/puppetlabs/pltraining-rbac',
+    ref: '2f60e1789a721ce83f8df061e13f8bf81cd4e4ce'
+
+mod 'puppet-acl',
+    git: 'https://github.com/dobbymoodge/puppet-acl.git',
+    branch: 'master'
+
+mod 'deploy',
+    git: 'https://github.com/cudgel/deploy.git',
+    branch: 'master'
+
+mod 'dotfiles',
+    git: 'https://github.com/cudgel/puppet-dotfiles.git',
+    branch: 'master'
+
+mod 'splunk',
+    git: 'https://github.com/cudgel/splunk.git',
+    branch: 'prod'
diff --git a/spec/fixtures/Puppetfile_test b/spec/fixtures/Puppetfile_test
new file mode 100644
index 0000000..bb9faf0
--- /dev/null
+++ b/spec/fixtures/Puppetfile_test
@@ -0,0 +1,12 @@
+mod 'puppet-hiera',
+  git: 'https://github.com/voxpupuli/puppet-hiera.git',
+  tag: '6.0.0'
+
+mod 'puppet-hiera',
+  git: 'https://github.com/voxpupuli/puppet-hiera.git',
+  tag: 'v6.0.0'
+
+mod 'puppet-hiera',
+  git: 'https://github.com/voxpupuli/puppet-hiera.git',
+  tag: 'abc'
+  
\ No newline at end of file
diff --git a/spec/fixtures/Puppetfile_with_bad_refs b/spec/fixtures/Puppetfile_with_bad_refs
new file mode 100644
index 0000000..cce2767
--- /dev/null
+++ b/spec/fixtures/Puppetfile_with_bad_refs
@@ -0,0 +1,10 @@
+forge "http://forge.puppetlabs.com"
+
+mod 'gitlab',
+  :git => 'https://github.com/vshn/puppet-gitlab',
+  :ref => '00397b86dfb3487d9df768cbd3698d362132b5bf'  # master
+
+mod 'r10k',
+  :git => 'https://github.com/acidprime/r10k',
+  :tag => 'bad'
+  
\ No newline at end of file
diff --git a/spec/fixtures/reflist.txt b/spec/fixtures/reflist.txt
new file mode 100644
index 0000000..295106a
--- /dev/null
+++ b/spec/fixtures/reflist.txt
@@ -0,0 +1,290 @@
+ref: refs/heads/master	HEAD
+156ca9a8ea69e056e86355b27d944e59d1b3a1e1	HEAD
+0ec707e431367bbe2752966be8ab915b6f0da754	refs/heads/74110ac
+07bb5d2d94db222dca5860eb29c184e8970f36f4	refs/heads/fix_version
+156ca9a8ea69e056e86355b27d944e59d1b3a1e1	refs/heads/master
+fcc0532bbc5a5b65f3941738339e9cc7e3d767ce	refs/heads/modulesync
+8d54891fa5df75890ee15d53080c2a81b4960f92	refs/heads/rnelson0-patch-1
+1e73763bc2d9e6d0e3f9b1f212e7a73c2838bed0	refs/pull/1/head
+b59c936b34086f719cb6d28a50e774ca22a77121	refs/pull/1/merge
+6eca20525cd290315b28a45e898e37830622f833	refs/pull/10/head
+8831444d775addccd106cdf00dc2ab0eec2f9d8b	refs/pull/10/merge
+595dd8b9916c6975f33c94f15f4a0508eed30896	refs/pull/100/head
+34d91cb8a66f8f5d276e4fa16964611041a1583b	refs/pull/101/head
+62fee8e705e72addf21cf1bb42826ff092a00283	refs/pull/102/head
+a241e425eff63cc0279c2812969850987d7ae30b	refs/pull/103/head
+275f742651ad86a6adc6839ef005507a2acbc310	refs/pull/104/head
+fde0b2cc5ad230f7ab518a54eb6b1fb0e1c30db6	refs/pull/105/head
+06b69092778dedd9359fc0a7d12c0958545e44de	refs/pull/105/merge
+631a70ed9efa9488bea9c64be432b072cad439f3	refs/pull/106/head
+1081aabc1f7881d34656f4d5e3f5b7010f529548	refs/pull/106/merge
+92f84f4fdd2ce37c836d8cae16faef4fcbe92092	refs/pull/107/head
+15ccd22c3918ecb37bcd6fe37da3b3cc75f2e09a	refs/pull/107/merge
+c3b726a4a775f5a2568be31dd58c0e18aa935258	refs/pull/11/head
+8519261ae226586a7f5181a09128e4dea8f70e58	refs/pull/110/head
+9d63ac78bc3ca8a903ed738dbdf42ac2355c3dd0	refs/pull/111/head
+d639c670b6fdf95156a8dab3fb5e670a26d66186	refs/pull/112/head
+bb36404711d319e1d6de063137f291b4b658f601	refs/pull/116/head
+204b7342b1ce18452f3d1cea233fa4e3ca543d21	refs/pull/117/head
+aecf3d9a0fb1330edb554c5ad512ff37302d1da2	refs/pull/119/head
+dcff0a785e6c7e9d44226af157bb14ed6f15002e	refs/pull/12/head
+48654ae43d5579ceaa22f52ff5d3fe4ca78e98ca	refs/pull/120/head
+2ca529e8df7d90a136a9cd719389108e62a610ce	refs/pull/121/head
+b31864fe957d1788b91c0584cbdb0289cde516e6	refs/pull/123/head
+421eb7c09ebc630103c7d0c7ffe79130322d575a	refs/pull/125/head
+66405ef32bcded15603426144d37abbdc691040c	refs/pull/127/head
+2613298b7005bcd8acba2cd824b09d5773bc3eea	refs/pull/13/head
+6d6d2d3e5cf8b6ca275ec7eef19e3075196972a5	refs/pull/13/merge
+56e5c2ceac87a6253def854d21575a7694ebfc10	refs/pull/130/head
+8a05a98e98ec1aadb56dd6f4da8774db5098c9af	refs/pull/131/head
+767196650c9130b12e9bd80db24da89905a6ba5c	refs/pull/133/head
+faa08ba48e9e7d4419b6f36beb8e0c9da816faa5	refs/pull/133/merge
+1f9024a864646f7073b16449ca3610ee81caf4a7	refs/pull/134/head
+361a9e371f1b48c3916c08063b22c064cb9665c4	refs/pull/135/head
+566270505c366364eec15213fad569e5a2322655	refs/pull/136/head
+82a38191aa00f160f8ff3a8e16e8b09a1a483e15	refs/pull/137/head
+b831b75466276a7718f21e88c28140a216102528	refs/pull/139/head
+bb4ce9bef78e42985ad70c186bfb72cabb651491	refs/pull/14/head
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+15d87d78f8f92f118ce5ee9ff88ef1eafe0aca2f	refs/tags/v2.3.0
+e5542e2d1df4bc742fd365e34779727ec69f222f	refs/tags/v2.4.0
+63d0e8a4ede650490c19e2611e56c037955f2962	refs/tags/v3.0.0
+677625a5d1c197c577d18e35f111d764090bbeab	refs/tags/v3.1.0
+99fe9997bf2aa12829d075aa401e6c79ac3b66a5	refs/tags/v3.2.0
+1bc0d26f972ceec8ae8330664e46e6a270ba7cd3	refs/tags/v3.3.0
+d3f5ebb756d4f04dcb32fe18d28fe92e9822d7c6	refs/tags/v3.3.1
+d1ab55a7ebbda5072f3972f73ca5031e30c949fd	refs/tags/v3.3.2
+e7c1251536a9e0f7f0b4a9c75a850ec1fb731732	refs/tags/v3.3.3
+b0719ca141f76de586a4c81ac9623ddc9fde655b	refs/tags/v3.3.4
+be0e012dc084930a655f105ad6b0ee3e4528a098	refs/tags/v3.4.0
+c11873253aebb047acb86f7fdddc4f3859d7296e	refs/tags/v3.4.1
diff --git a/spec/ra10ke/puppetfile_parser_spec.rb b/spec/ra10ke/puppetfile_parser_spec.rb
new file mode 100644
index 0000000..f7fab3d
--- /dev/null
+++ b/spec/ra10ke/puppetfile_parser_spec.rb
@@ -0,0 +1,103 @@
+require 'spec_helper'
+require 'ra10ke/puppetfile_parser'
+
+RSpec.describe 'Ra10ke::PuppetfileParser' do
+    include Ra10ke::PuppetfileParser
+
+    let(:puppetfile) do
+      File.join(fixtures_dir, 'Puppetfile')
+    end
+
+    let(:puppetfile_modules) do
+        [{:args=>{:version=>"2.2.0"}, :name=>"inifile", :namespace=>"puppetlabs"},
+             {:args=>{:version=>"4.24.0"}, :name=>"stdlib", :namespace=>"puppetlabs"},
+             {:args=>{:version=>"4.0.0"}, :name=>"concat", :namespace=>"puppetlabs"},
+             {:args=>{:version=>"6.4.1"}, :name=>"ntp", :namespace=>"puppetlabs"},
+             {:args=>{:version=>"3.1.1"}, :name=>"archive", :namespace=>"puppet"},
+             {:args=>
+               {:git=>"https://github.com/vshn/puppet-gitlab",
+                :ref=>"00397b86dfb3487d9df768cbd3698d362132b5bf"},
+              :name=>"gitlab",
+              :namespace=>nil},
+             {:args=>{:git=>"https://github.com/acidprime/r10k", :tag=>"v3.1.1"},
+              :name=>"r10k",
+              :namespace=>nil},
+             {:args=>
+               {:branch=>"gitlab_disable_ssl_verify_support",
+                :git=>"https://github.com/npwalker/abrader-gms"},
+              :name=>"gms",
+              :namespace=>nil},
+             {:args=>
+               {:git=>"https://github.com/puppetlabs/pltraining-rbac",
+                :ref=>"2f60e1789a721ce83f8df061e13f8bf81cd4e4ce"},
+              :name=>"rbac",
+              :namespace=>"pltraining"},
+             {:args=>
+               {:branch=>"master", :git=>"https://github.com/dobbymoodge/puppet-acl.git"},
+              :name=>"acl",
+              :namespace=>"puppet"},
+             {:args=>{:branch=>"master", :git=>"https://github.com/cudgel/deploy.git"},
+              :name=>"deploy",
+              :namespace=>nil},
+             {:args=>
+               {:branch=>"master", :git=>"https://github.com/cudgel/puppet-dotfiles.git"},
+              :name=>"dotfiles",
+              :namespace=>nil},
+             {:args=>{:branch=>"prod", :git=>"https://github.com/cudgel/splunk.git"},
+              :name=>"splunk",
+              :namespace=>nil}]
+    end
+
+
+    it '#modules' do
+        expect(modules(puppetfile)).to eq(puppetfile_modules)
+    end
+
+    it '#git_modules' do
+        expected = [{:args=>
+            {:git=>"https://github.com/vshn/puppet-gitlab",
+             :ref=>"00397b86dfb3487d9df768cbd3698d362132b5bf"},
+           :name=>"gitlab",
+           :namespace=>nil},
+          {:args=>{:git=>"https://github.com/acidprime/r10k", :tag=>"v3.1.1"},
+           :name=>"r10k",
+           :namespace=>nil},
+          {:args=>
+            {:branch=>"gitlab_disable_ssl_verify_support",
+             :git=>"https://github.com/npwalker/abrader-gms"},
+           :name=>"gms",
+           :namespace=>nil},
+          {:args=>
+            {:git=>"https://github.com/puppetlabs/pltraining-rbac",
+             :ref=>"2f60e1789a721ce83f8df061e13f8bf81cd4e4ce"},
+           :name=>"rbac",
+           :namespace=>"pltraining"},
+          {:args=>
+            {:branch=>"master", :git=>"https://github.com/dobbymoodge/puppet-acl.git"},
+           :name=>"acl",
+           :namespace=>"puppet"},
+          {:args=>{:branch=>"master", :git=>"https://github.com/cudgel/deploy.git"},
+           :name=>"deploy",
+           :namespace=>nil},
+          {:args=>
+            {:branch=>"master", :git=>"https://github.com/cudgel/puppet-dotfiles.git"},
+           :name=>"dotfiles",
+           :namespace=>nil},
+          {:args=>{:branch=>"prod", :git=>"https://github.com/cudgel/splunk.git"},
+           :name=>"splunk",
+           :namespace=>nil}]
+        expect(git_modules(puppetfile)).to eq(expected)
+    end
+
+    it '#parse_modules_args' do
+        data = " 'puppet-acl',  :git => 'https://github.com/dobbymoodge/puppet-acl.git',  :branch => 'master'"
+        expect(parse_module_args(data)).to eq({:args=>{:branch=>"master",
+             :git=>"https://github.com/dobbymoodge/puppet-acl.git"},
+              :name=>"acl", :namespace=>"puppet"})
+    end
+
+    it '#parse_modules_args when empty' do
+        data = ""
+        expect(parse_module_args(data)).to eq({})
+    end
+end
diff --git a/spec/ra10ke/validate_spec.rb b/spec/ra10ke/validate_spec.rb
new file mode 100644
index 0000000..b0ed88f
--- /dev/null
+++ b/spec/ra10ke/validate_spec.rb
@@ -0,0 +1,81 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+require 'ra10ke/validate'
+RSpec::Mocks.configuration.allow_message_expectations_on_nil = true
+
+RSpec.describe 'Ra10ke::Validate::Validation' do
+  let(:instance) do
+    Ra10ke::Validate::Validation.new(puppetfile)
+  end
+
+  let(:result) do
+    double
+  end
+
+  before(:each) do
+    allow(result).to receive(:success?).and_return(true)
+    # allow(instance).to receive(:`).with(anything).and_return(result)
+    allow($CHILD_STATUS).to receive(:success?).and_return(true)
+    allow(instance).to receive(:`).with(anything)
+    .and_return(File.read(File.join(fixtures_dir, 'reflist.txt')))
+  end
+
+  let(:puppetfile) do
+    File.join(fixtures_dir, 'Puppetfile')
+  end
+
+  it '#new' do
+    expect(instance).to be_a Ra10ke::Validate::Validation
+  end
+
+  it '#valid_ref?' do
+    expect(instance.valid_ref?('https://www.example.com', 'master')).to be true
+  end
+
+  it '#valid_commit?' do
+    expect(instance.valid_commit?('https://www.example.com', 'master')).to be true
+  end
+
+  it '#bad_mods?' do
+    allow(instance).to receive(:`).with(anything)
+    .and_return(File.read(File.join(fixtures_dir, 'reflist.txt')))
+    # because we can't test every single module we return the same result set
+    # which only passes for a single module, while others fail.
+    expect(instance.bad_mods?).to be true
+  end
+
+  it '#all_modules is an array' do
+    expect(instance.all_modules).to be_a Array
+  end
+
+  it '#sorted_mods is an array' do
+    expect(instance.sorted_mods).to be_a Array
+  end
+
+  it '#data is a hash' do
+    expect(instance.all_modules.first).to be_a Hash
+  end
+
+  it '#data is a hash with keys' do
+    keys = instance.all_modules.first.keys
+    expect(keys).to eq(%i[name url ref valid_ref? status])
+  end
+
+  it '#data is a hash with values' do
+    keys = instance.all_modules.first.values
+
+    expect(keys).to eq(['gitlab', 'https://github.com/vshn/puppet-gitlab',
+                        '00397b86dfb3487d9df768cbd3698d362132b5bf', true, '👍'])
+  end
+
+  it '#all_refs' do
+    refs = instance.all_refs('https://www.example.com')
+    expect(refs).to be_a Hash
+    expect(refs.first).to eq(
+        ["0ec707e431367bbe2752966be8ab915b6f0da754",
+             {:name=>"74110ac", :ref=>"refs/heads/74110ac", :subtype=>nil, :type=>:branch}]
+    )
+
+  end
+end
diff --git a/spec/ra10ke_spec.rb b/spec/ra10ke_spec.rb
new file mode 100644
index 0000000..3787078
--- /dev/null
+++ b/spec/ra10ke_spec.rb
@@ -0,0 +1,73 @@
+# frozen_string_literal: true
+
+require 'ra10ke'
+require 'spec_helper'
+
+RSpec.describe 'Ra10ke::RakeTask' do
+  let(:instance) do
+    Ra10ke::RakeTask.new do |t|
+        t.puppetfile_path = puppetfile
+    end
+  end
+
+  let(:puppetfile) do
+    File.join(fixtures_dir, 'Puppetfile')
+  end
+
+  let(:args) do
+    []
+  end
+
+  describe 'validate tasks' do
+    it '#new' do
+      expect(instance).to be_a Ra10ke::RakeTask
+    end
+
+    it '#define_task_validate' do
+      expect(instance.define_task_validate(args)).to be_a Rake::Task
+    end
+
+    it '#define_task_solve_dependencies' do
+      expect(instance.define_task_solve_dependencies(args)).to be_a Rake::Task
+    end
+
+    it '#define_task_syntax' do
+      expect(instance.define_task_syntax(args)).to be_a Rake::Task
+    end
+
+    it '#define_task_dependencies' do
+      expect(instance.define_task_dependencies(args)).to be_a Rake::Task
+    end
+
+    it '#define_task_install' do
+      expect(instance.define_task_install(args)).to be_a Rake::Task
+    end
+
+    it '#get_puppetfile' do
+      expect(instance.get_puppetfile).to be_a R10K::Puppetfile
+    end
+  end
+
+  describe 'run tasks with good refs' do
+    it '#run_validate_task' do
+      task = instance.define_task_validate(args)
+      expect(task.invoke).to be_a Array
+    end
+  end
+
+  describe 'run tasks with bad refs' do
+    let(:puppetfile) do
+      File.join(fixtures_dir, 'Puppetfile_with_bad_refs')
+    end
+    
+    # I suspect rake is caching something here and the puppetfile is 
+    # not being sent correctly as it is not using the file I specify. 
+    # The output should be different.
+    # Testing this by itself works
+    it '#run_validate_task' do
+      t =  Ra10ke::RakeTask.new
+      task2 = t.define_task_validate(args)
+      expect(task2.invoke).to be nil
+    end
+  end
+end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
new file mode 100644
index 0000000..cc0e90b
--- /dev/null
+++ b/spec/spec_helper.rb
@@ -0,0 +1,3 @@
+def fixtures_dir
+    File.join(__dir__, 'fixtures')
+end