diff --git a/docs/plugins.md b/docs/plugins.md
index b2fbccdae..0bdd15158 100644
--- a/docs/plugins.md
+++ b/docs/plugins.md
@@ -1,22 +1,26 @@
 ---
-title: About InSpec Plugins
+title: About InSpec and Train Plugins
 ---
 
-# InSpec Plugins
+# InSpec and Train Plugins
 
 ## What are InSpec Plugins?
 
-Plugins are optional software components that extend the capabilities of InSpec. For example, `inspec-iggy` is a plugin project that aims to generate InSpec controls from infrastructure-as-code.  Plugins are distributed as RubyGems, and InSpec manages their installation.
+InSpec Plugins are optional software components that extend the capabilities of InSpec. For example, [`inspec-iggy`](https://github.com/inspec/inspec-iggy) is a Plugin project that aims to generate InSpec controls from infrastructure-as-code files.  Plugins are distributed as RubyGems, and InSpec manages their installation. InSpec Plugins always begin with the prefix 'inspec-'.
+
+## What are Train Plugins?
+
+Train Plugins allow InSpec to speak to new kinds of targets (typically new remote targets or APIs, but you could treat the local system in a new way if you wished to).  For example, if you wanted to audit a Kubernetes cluster, you might want a transport that can talk to the supervisor API.  You'd develop a Train Plugin for that, and install it using the InSpec command line. Train Plugins always begin with the prefix 'train-'.
 
 ## What can plugins do?
 
 Currently, each plugin can offer one or more of these capabilities:
 
  * define a new command-line-interface (CLI) command suite
+ * connectivity to new types of hosts or cloud providers (`train` plugins)
 
 Future work might include new capability types, such as:
 
- * connectivity to new types of hosts or cloud providers (`train` transports)
  * reporters (output generators)
  * DSL extensions at the file, control, or test level
  * attribute fetchers to allow reading InSpec attributes from new sources (for example, a remote, encrypted key-value store)
@@ -37,10 +41,17 @@ You can install a plugin by running:
 
 ```bash
 $ inspec plugin install inspec-some-plugin
+$ inspec plugin install train-some-plugin
 ```
 
 For more details on what the `plugin` command can do, see the [online help](https://www.inspec.io/docs/reference/cli/#plugin), or run `inspec plugin help`.
 
 ## How do I write a plugin?
 
-For details on how to author a Plugin, see the [developer documentation](https://github.com/inspec/inspec/blob/master/docs/dev/plugins.md)
\ No newline at end of file
+### InSpec Plugins
+
+For details on how to author an InSpec Plugin, see the [developer documentation](https://github.com/inspec/inspec/blob/master/docs/dev/plugins.md)
+
+### Train Plugins
+
+For details on how to author a Train Plugin, see the [developer documentation](https://github.com/inspec/train/blob/master/docs/dev/plugins.md)
\ No newline at end of file
diff --git a/inspec-core.gemspec b/inspec-core.gemspec
index d0bf22ecf..23af5f1f8 100644
--- a/inspec-core.gemspec
+++ b/inspec-core.gemspec
@@ -22,7 +22,7 @@ Gem::Specification.new do |spec|
 
   spec.required_ruby_version = '>= 2.3'
 
-  spec.add_dependency 'train-core', '~> 1.4', '>= 1.4.37'
+  spec.add_dependency 'train-core', '~> 1.5'
   spec.add_dependency 'thor', '~> 0.20'
   spec.add_dependency 'json', '>= 1.8', '< 3.0'
   spec.add_dependency 'method_source', '~> 0.8'
diff --git a/inspec.gemspec b/inspec.gemspec
index 06ce249c0..cd8318c7e 100644
--- a/inspec.gemspec
+++ b/inspec.gemspec
@@ -26,7 +26,7 @@ Gem::Specification.new do |spec|
 
   spec.required_ruby_version = '>= 2.3'
 
-  spec.add_dependency 'train', '~> 1.4', '>= 1.4.37'
+  spec.add_dependency 'train', '~> 1.5'
   spec.add_dependency 'thor', '~> 0.20'
   spec.add_dependency 'json', '>= 1.8', '< 3.0'
   spec.add_dependency 'method_source', '~> 0.8'
diff --git a/lib/inspec/plugin/v2/loader.rb b/lib/inspec/plugin/v2/loader.rb
index 89ec8d941..92fb4d582 100644
--- a/lib/inspec/plugin/v2/loader.rb
+++ b/lib/inspec/plugin/v2/loader.rb
@@ -24,6 +24,10 @@ module Inspec::Plugin::V2
       # New-style (v2) co-distributed plugins are in lib/plugins,
       # and may be safely loaded
       detect_core_plugins unless options[:omit_core_plugins]
+
+      # Train plugins aren't InSpec plugins (they don't use our API)
+      # but InSpec CLI manages them.  So, we have to wrap them a bit.
+      accommodate_train_plugins
     end
 
     def load_all
@@ -195,6 +199,7 @@ module Inspec::Plugin::V2
     def annotate_status_after_loading(plugin_name)
       status = registry[plugin_name]
       return if status.api_generation == 2 # Gen2 have self-annotating superclasses
+      return if status.api_generation == :'train-1' # Train plugins are here as a courtesy, don't poke them
       case status.installation_type
       when :bundle
         annotate_bundle_plugin_status_after_load(plugin_name)
@@ -250,6 +255,18 @@ module Inspec::Plugin::V2
       end
     end
 
+    def accommodate_train_plugins
+      registry.plugin_names.map(&:to_s).grep(/^train-/).each do |train_plugin_name|
+        status = registry[train_plugin_name.to_sym]
+        status.api_generation = :'train-1'
+
+        if status.installation_type == :gem
+          # Activate the gem. This allows train to 'require' the gem later.
+          activate_managed_gems_for_plugin(train_plugin_name)
+        end
+      end
+    end
+
     # TODO: DRY up re: Installer read_or_init_config_file
     # TODO: refactor the plugin.json file to have its own class, which Loader consumes
     def read_conf_file
diff --git a/lib/inspec/plugin/v2/registry.rb b/lib/inspec/plugin/v2/registry.rb
index 4f1c3e02c..0bf07970d 100644
--- a/lib/inspec/plugin/v2/registry.rb
+++ b/lib/inspec/plugin/v2/registry.rb
@@ -1,5 +1,7 @@
 require 'forwardable'
 require 'singleton'
+require 'train'
+
 require_relative 'status'
 require_relative 'activator'
 
@@ -25,11 +27,14 @@ module Inspec::Plugin::V2
     end
 
     def loaded_plugin?(name)
-      registry.dig(name.to_sym, :loaded)
+      # HACK: Status is normally the source of truth for loadedness, unless it is a train plugin; then the Train::Registry is the source of truth.
+      # Also, InSpec registry is keyed on Symbols; Train is keyed on Strings.
+      return registry.dig(name.to_sym, :loaded) unless name.to_s.start_with?('train-')
+      Train::Plugins.registry.key?(name.to_s.sub(/^train-/, ''))
     end
 
     def loaded_count
-      registry.values.select(&:loaded).count
+      loaded_plugin_names.count
     end
 
     def known_count
@@ -37,7 +42,7 @@ module Inspec::Plugin::V2
     end
 
     def loaded_plugin_names
-      registry.values.select(&:loaded).map(&:name)
+      registry.keys.select { |name| loaded_plugin?(name) }
     end
 
     def path_based_plugin?(name)
diff --git a/lib/plugins/inspec-plugin-manager-cli/lib/inspec-plugin-manager-cli/cli_command.rb b/lib/plugins/inspec-plugin-manager-cli/lib/inspec-plugin-manager-cli/cli_command.rb
index 843e7aad1..72fa7e74e 100644
--- a/lib/plugins/inspec-plugin-manager-cli/lib/inspec-plugin-manager-cli/cli_command.rb
+++ b/lib/plugins/inspec-plugin-manager-cli/lib/inspec-plugin-manager-cli/cli_command.rb
@@ -7,7 +7,7 @@ module InspecPlugins
     class CliCommand < Inspec.plugin(2, :cli_command)
       include Term::ANSIColor
 
-      subcommand_desc 'plugin SUBCOMMAND', 'Manage InSpec plugins'
+      subcommand_desc 'plugin SUBCOMMAND', 'Manage InSpec and Train plugins'
 
       #==================================================================#
       #                      inspec plugin list
@@ -207,10 +207,11 @@ module InspecPlugins
       # Rationale for rubocop variances: It's a heuristics method, and will be full of
       # conditionals.  The code is well-commented; refactoring into sub-methods would
       # reduce clarity.
-      def install_from_path__apply_entry_point_heuristics(path) # rubocop: disable Metrics/AbcSize, Metrics/CyclomaticComplexity
+      def install_from_path__apply_entry_point_heuristics(path) # rubocop: disable Metrics/AbcSize, Metrics/CyclomaticComplexity, Metrics/PerceivedComplexity
         given = Pathname.new(path)
         given = given.expand_path # Resolve any relative paths
         name_regex = /^(inspec|train)-/
+        versioned_regex = /^(inspec|train)-[a-z0-9\-\_]+-\d+\.\d+\.\d+$/
 
         # What are the last four things like?
         parts = [
@@ -220,14 +221,14 @@ module InspecPlugins
           given.extname,
         ].map(&:to_s)
 
-        # Simplest case: it was a full entry point, as presented.
+        # Case 1: Simplest case: it was a full entry point, as presented.
         # /home/you/projects/inspec-something/lib/inspec-something.rb
         #   parts index:           ^0^        ^1^      ^2^        ^3^
         if parts[0] =~ name_regex && parts[1] == 'lib' && parts[2] == parts[0] && parts[3] == '.rb'
           return given.to_s
         end
 
-        # Also easy: they either referred to the internal library directory,
+        # Case 2: Also easy: they either referred to the internal library directory,
         # or left the extansion off.  Those are the same to us.
         # /home/you/projects/inspec-something/lib/inspec-something
         #   parts index:           ^0^        ^1^      ^2^          (3 is empty)
@@ -235,7 +236,22 @@ module InspecPlugins
           return given.to_s + '.rb'
         end
 
-        # Easy to recognize, but harder to handle: they referred to the project root.
+        # Case 3: Maybe they were refering to a path that is inside a gem installation, or an exploded gem?
+        # In that case, we'll have a version on the plugin name in part 0
+        # /home/you/.gems/2.4.0/gems/inspec-something-3.45.1/lib/inspec-something.rb
+        #   parts index:                     ^0^             ^1^      ^2^         ^3^
+        if parts[0] =~ versioned_regex && parts[1] == 'lib' && parts[0].start_with?(parts[2]) && parts[3] == '.rb'
+          return given.to_s
+        end
+
+        # Case 4: Like case 3, but missing the .rb
+        # /home/you/.gems/2.4.0/gems/inspec-something-3.45.1/lib/inspec-something
+        #   parts index:                     ^0^             ^1^      ^2^         ^3^ (empty)
+        if parts[0] =~ versioned_regex && parts[1] == 'lib' && parts[0].start_with?(parts[2]) && parts[3].empty?
+          return given.to_s + '.rb'
+        end
+
+        # Case 5: Easy to recognize, but harder to handle: they referred to the project root.
         #                 /home/you/projects/inspec-something
         #   parts index:        ^0^   ^1^         ^2^          (3 is empty)
         #   0 and 1 are not meaningful to us, but we hope to find a parts[2]/lib/inspec-something.rb.
@@ -261,9 +277,19 @@ module InspecPlugins
         end
 
         # OK, the wheels didn't fall off.  But is it a plugin?
-        unless Inspec::Plugin::V2::Registry.instance.known_plugin?(plugin_name.to_sym)
-          puts(red { 'Does not appear to be a plugin' } + " - #{plugin_name} - After probe-loading the supposed plugin, it did not register itself. Ensure something inherits from 'Inspec.plugin(2)' - installation failed.")
-          exit 1
+        if plugin_name.to_s.start_with?('train')
+          # Train internal names do not include the prix in their registry entries
+          # And the registry is keyed on Strings
+          registry_key = plugin_name.to_s.sub(/^train-/, '')
+          unless Train::Plugins.registry.key?(registry_key)
+            puts(red { 'Does not appear to be a plugin' } + " - #{plugin_name} - After probe-loading the supposed plugin, it did not register itself to Train. Ensure something inherits from 'Train.plugin(1)' - installation failed.")
+            exit 1
+          end
+        else
+          unless registry.known_plugin?(plugin_name.to_sym)
+            puts(red { 'Does not appear to be a plugin' } + " - #{plugin_name} - After probe-loading the supposed plugin, it did not register itself to InSpec. Ensure something inherits from 'Inspec.plugin(2)' - installation failed.")
+            exit 1
+          end
         end
       end
 
diff --git a/lib/plugins/inspec-plugin-manager-cli/test/functional/inspec-plugin_test.rb b/lib/plugins/inspec-plugin-manager-cli/test/functional/inspec-plugin_test.rb
index 5767991ac..0f38df462 100644
--- a/lib/plugins/inspec-plugin-manager-cli/test/functional/inspec-plugin_test.rb
+++ b/lib/plugins/inspec-plugin-manager-cli/test/functional/inspec-plugin_test.rb
@@ -112,6 +112,28 @@ class PluginManagerCliList < MiniTest::Test
     path_line = result.stdout.split("\n").grep(/path/).first
     assert_match(/\s*inspec-\S+\s+src\s+path\s+2/, path_line)
   end
+
+  def test_list_when_a_train_plugin_is_installed
+    pre_block = Proc.new do |plugin_statefile_data, tmp_dir|
+      plugin_statefile_data.clear # Signal not to write a file, we'll provide one.
+      copy_in_core_config_dir('train-test-fixture', tmp_dir)
+    end
+
+    result = run_inspec_process_with_this_plugin('plugin list', pre_run: pre_block)
+    assert_equal 0, result.exit_status, 'exist status must be 0'
+    assert_includes result.stdout, '1 plugin(s) total', 'list train should show one plugins'
+
+    # Plugin Name                   Version   Via     ApiVer
+    # -------------------------------------------------------
+    #  train-test-fixture            0.1.0    gem     train-1
+    # -------------------------------------------------------
+    #  1 plugin(s) total
+    train_line = result.stdout.split("\n").grep(/train/).first
+    assert_includes(train_line, 'train-test-fixture')
+    assert_includes(train_line, '0.1.0')
+    assert_includes(train_line, 'gem')
+    assert_includes(train_line, 'train-1')
+  end
 end
 
 #-----------------------------------------------------------------------------------------#
@@ -184,6 +206,15 @@ class PluginManagerCliSearch < MiniTest::Test
     assert_includes result.stdout, '0 plugin(s) found', 'Search result should find 0 plugins'
   end
 
+  def test_search_for_a_real_gem_with_full_name_no_options_and_train_name
+    result = run_inspec_process('plugin search train-test-fixture')
+    assert_equal 0, result.exit_status, 'Search should exit 0 on a hit'
+    assert_includes result.stdout, 'train-test-fixture', 'Search result should contain the gem name'
+    assert_includes result.stdout, '1 plugin(s) found', 'Search result should find 1 plugin'
+    line = result.stdout.split("\n").grep(/train-test-fixture/).first
+    assert_match(/\s*train-test-fixture\s+\((\d+\.\d+\.\d+){1}\)/,line,'Plugin line should include name and exactly one version')
+  end
+
 end
 
 #-----------------------------------------------------------------------------------------#
@@ -194,17 +225,43 @@ class PluginManagerCliInstall < MiniTest::Test
   extend CorePluginFunctionalHelper  # gives us class methods, like `let` aliases out here outside test methods
 
   include PluginManagerHelpers
-
+  ruby_abi_version = (Gem.ruby_version.segments[0, 2] << 0).join('.')
   # Test multiple hueristics of the path-mode install.
   # These are all positive tests; they should resolve the entry point to the same path in each case.
   {
-    'is_perfect' => File.join(core_fixture_plugins_path, 'inspec-test-fixture', 'lib', 'inspec-test-fixture.rb'),
-    'refers_to_the_entry_point_with_no_extension' => File.join(core_fixture_plugins_path, 'inspec-test-fixture', 'lib', 'inspec-test-fixture'),
-    'refers_to_the_src_root_of_a_plugin' => File.join(core_fixture_plugins_path, 'inspec-test-fixture'),
-    'refers_to_a_relative_path' => File.join('test', 'unit', 'mock', 'plugins', 'inspec-test-fixture', 'lib', 'inspec-test-fixture.rb'),
-  }.each do |test_name, fixture_plugin_path|
+    'is_perfect' => {
+      given: File.join(core_fixture_plugins_path, 'inspec-test-fixture', 'lib', 'inspec-test-fixture.rb'),
+    },
+    'refers_to_the_entry_point_with_no_extension' => {
+      given: File.join(core_fixture_plugins_path, 'inspec-test-fixture', 'lib', 'inspec-test-fixture'),
+    },
+    'refers_to_the_src_root_of_a_plugin' => {
+      given: File.join(core_fixture_plugins_path, 'inspec-test-fixture'),
+    },
+    'refers_to_a_versioned_gem_install' => {
+      given: File.join(core_config_dir_path, 'test-fixture-1-float', 'gems', ruby_abi_version, 'gems', 'inspec-test-fixture-0.1.0', 'lib', 'inspec-test-fixture.rb'),
+      resolved_path: File.join(core_config_dir_path, 'test-fixture-1-float', 'gems', ruby_abi_version, 'gems', 'inspec-test-fixture-0.1.0', 'lib', 'inspec-test-fixture.rb'),
+    },
+    'refers_to_a_versioned_gem_install_missing_extension' => {
+      given: File.join(core_config_dir_path, 'test-fixture-1-float', 'gems', ruby_abi_version, 'gems', 'inspec-test-fixture-0.1.0', 'lib', 'inspec-test-fixture'),
+      resolved_path: File.join(core_config_dir_path, 'test-fixture-1-float', 'gems', ruby_abi_version, 'gems', 'inspec-test-fixture-0.1.0', 'lib', 'inspec-test-fixture.rb'),
+    },
+    'refers_to_a_relative_path' => {
+      given: File.join('test', 'unit', 'mock', 'plugins', 'inspec-test-fixture', 'lib', 'inspec-test-fixture.rb'),
+    },
+    'refers_to_a_train_plugin' => {
+      given: File.join(core_config_dir_path, 'train-test-fixture', 'gems', ruby_abi_version, 'gems', 'train-test-fixture-0.1.0', 'lib', 'train-test-fixture.rb'),
+      plugin_name: 'train-test-fixture',
+      resolved_path: File.join(core_config_dir_path, 'train-test-fixture', 'gems', ruby_abi_version, 'gems', 'train-test-fixture-0.1.0', 'lib', 'train-test-fixture.rb'),
+    },
+  }.each do |test_name, fixture_info|
     define_method(('test_install_from_path_when_path_' + test_name).to_sym) do
-      install_result = run_inspec_process_with_this_plugin("plugin install #{fixture_plugin_path}", post_run: list_after_run)
+      fixture_info = {
+        plugin_name: 'inspec-test-fixture',
+        resolved_path: File.join(core_fixture_plugins_path, 'inspec-test-fixture', 'lib', 'inspec-test-fixture.rb')
+      }.merge(fixture_info)
+
+      install_result = run_inspec_process_with_this_plugin("plugin install #{fixture_info[:given]}", post_run: list_after_run)
 
       assert_empty install_result.stderr
       assert_equal 0, install_result.exit_status, 'Exit status should be 0'
@@ -212,20 +269,19 @@ class PluginManagerCliInstall < MiniTest::Test
       # Check UX messaging
       success_message = install_result.stdout.split("\n").grep(/installed/).last
       refute_nil success_message, 'Should find a success message at the end'
-      assert_includes success_message, 'inspec-test-fixture'
+      assert_includes success_message, fixture_info[:plugin_name]
       assert_includes success_message, 'plugin installed via source path reference'
 
       # Check round-trip UX via list
       list_result = install_result.payload.list_result
-      itf_line = list_result.stdout.split("\n").grep(/inspec-test-fixture/).first
-      refute_nil itf_line, 'inspec-test-fixture should now appear in the output of inspec list'
-      assert_match(/\s*inspec-test-fixture\s+src\s+path\s+/, itf_line, 'list output should show that it is a path installation')
+      itf_line = list_result.stdout.split("\n").grep(Regexp.new(fixture_info[:plugin_name])).first
+      refute_nil itf_line, 'plugin name should now appear in the output of inspec list'
+      assert_match(/\s*(inspec|train)-test-fixture\s+src\s+path\s+/, itf_line, 'list output should show that it is a path installation')
 
       # Check plugin statefile. Extra important in this case, since all should resolve to the same entry point.
       plugin_data = install_result.payload.plugin_data
-      entry = plugin_data['plugins'].detect { |e| e['name'] == 'inspec-test-fixture' }
-      expected = File.join(core_fixture_plugins_path, 'inspec-test-fixture', 'lib', 'inspec-test-fixture.rb')
-      assert_equal expected, entry['installation_path'], 'Regardless of input, the entry point should be correct.'
+      entry = plugin_data['plugins'].detect { |e| e['name'] == fixture_info[:plugin_name] }
+      assert_equal fixture_info[:resolved_path], entry['installation_path'], 'Regardless of input, the entry point should be correct.'
     end
   end
 
@@ -439,6 +495,24 @@ class PluginManagerCliInstall < MiniTest::Test
     assert_includes refusal_message, 'Update required'
     assert_includes refusal_message, 'inspec plugin update'
   end
+
+  def test_install_from_rubygems_latest_with_train_plugin
+    install_result = run_inspec_process_with_this_plugin('plugin install train-test-fixture', post_run: list_after_run)
+
+    assert_empty install_result.stderr
+    assert_equal 0, install_result.exit_status, 'Exit status should be 0'
+
+    success_message = install_result.stdout.split("\n").grep(/installed/).last
+    refute_nil success_message, 'Should find a success message at the end'
+    assert_includes success_message, 'train-test-fixture'
+    assert_includes success_message, '0.1.0'
+    assert_includes success_message, 'installed from rubygems.org'
+
+    list_result = install_result.payload.list_result
+    itf_line = list_result.stdout.split("\n").grep(/train-test-fixture/).first
+    refute_nil itf_line, 'train-test-fixture should now appear in the output of inspec list'
+    assert_match(/\s*train-test-fixture\s+0.1.0\s+gem\s+/, itf_line, 'list output should show that it is a gem installation with version')
+  end
 end
 
 
diff --git a/lib/plugins/things-for-train-integration.rb b/lib/plugins/things-for-train-integration.rb
new file mode 100644
index 000000000..21f784e44
--- /dev/null
+++ b/lib/plugins/things-for-train-integration.rb
@@ -0,0 +1,14 @@
+# docs/plugins
+# Update that train plugins are now possible
+
+# test/unit/plugin/v2/loader_test.rb
+# TODO: loading all plugins does not activate Train plugins
+
+# lib/plugins/inspec-plugin-manager-cli/test/functional/inspec-plugin_test.rb
+# ~ Should be able to install a train plugin - in place, will fail until plugin published
+# ~ Should be able to search for a train plugin - in place, will fail until plugin published
+
+# test/functional/plugins_test.rb
+# % Should be able to suggest a train transport plugin when an unsupported --target schema is used and a gem search is successful
+# % Should be able to suggest a train transport plugin when an unrecognized profile platform declaration is used and a gem search is successful
+# - Should be able to run inspec detect targeting a test target
diff --git a/test/functional/plugins_test.rb b/test/functional/plugins_test.rb
index e25efd942..0441a4fa9 100644
--- a/test/functional/plugins_test.rb
+++ b/test/functional/plugins_test.rb
@@ -104,3 +104,59 @@ describe 'plugin cli usage message integration' do
     end
   end
 end
+
+#=========================================================================================#
+#                           Train Plugin Support
+#=========================================================================================#
+
+describe 'train plugin support'  do
+  describe 'when a train plugin is installed' do
+    include FunctionalHelper
+    it 'can run inspec detect against a URL target' do
+      outcome = inspec_with_env('detect -t test-fixture://',  INSPEC_CONFIG_DIR: File.join(config_dir_path, 'train-test-fixture'))
+      outcome.exit_status.must_equal(0)
+      outcome.stderr.must_be_empty
+      lines = outcome.stdout.split("\n")
+      lines.grep(/Name/).first.must_include('test-fixture')
+      lines.grep(/Name/).first.wont_include('train-test-fixture')
+      lines.grep(/Release/).first.must_include('0.1.0')
+      lines.grep(/Families/).first.must_include('os')
+      lines.grep(/Families/).first.must_include('windows')
+      lines.grep(/Families/).first.must_include('unix')
+      lines.grep(/Arch/).first.must_include('mock')
+    end
+
+    it 'can run inspec detect against a test-fixture backend' do
+      outcome = inspec_with_env('detect -b test-fixture',  INSPEC_CONFIG_DIR: File.join(config_dir_path, 'train-test-fixture'))
+      outcome.exit_status.must_equal(0)
+      outcome.stderr.must_be_empty
+      lines = outcome.stdout.split("\n")
+      lines.grep(/Name/).first.must_include('test-fixture')
+      lines.grep(/Name/).first.wont_include('train-test-fixture')
+      lines.grep(/Release/).first.must_include('0.1.0')
+      lines.grep(/Families/).first.must_include('os')
+      lines.grep(/Families/).first.must_include('windows')
+      lines.grep(/Families/).first.must_include('unix')
+      lines.grep(/Arch/).first.must_include('mock')
+    end
+
+    it 'can run inspec shell and read a file' do
+      outcome = inspec_with_env("shell -t test-fixture:// -c 'file(\"any-path\").content'",  INSPEC_CONFIG_DIR: File.join(config_dir_path, 'train-test-fixture'))
+      outcome.exit_status.must_equal(0)
+      outcome.stderr.must_be_empty
+      outcome.stdout.chomp.must_equal 'Lorem Ipsum'
+    end
+
+    it 'can run inspec shell and run a command' do
+      outcome = inspec_with_env("shell -t test-fixture:// -c 'command(\"echo hello\").exit_status'",  INSPEC_CONFIG_DIR: File.join(config_dir_path, 'train-test-fixture'))
+      outcome.exit_status.must_equal(0)
+      outcome.stderr.must_be_empty
+      outcome.stdout.chomp.must_equal "17"
+
+      outcome = inspec_with_env("shell -t test-fixture:// -c 'command(\"echo hello\").stdout'",  INSPEC_CONFIG_DIR: File.join(config_dir_path, 'train-test-fixture'))
+      outcome.exit_status.must_equal(0)
+      outcome.stderr.must_be_empty
+      outcome.stdout.chomp.must_equal "Mock Command Result stdout"
+    end
+  end
+end
\ No newline at end of file
diff --git a/test/unit/mock/config_dirs/test-fixture-1-float/gems/2.3.0/gems/inspec-test-fixture-0.1.0/lib/inspec-test-fixture.rb b/test/unit/mock/config_dirs/test-fixture-1-float/gems/2.3.0/gems/inspec-test-fixture-0.1.0/lib/inspec-test-fixture.rb
index bab3b49f6..a2a6059c0 100644
--- a/test/unit/mock/config_dirs/test-fixture-1-float/gems/2.3.0/gems/inspec-test-fixture-0.1.0/lib/inspec-test-fixture.rb
+++ b/test/unit/mock/config_dirs/test-fixture-1-float/gems/2.3.0/gems/inspec-test-fixture-0.1.0/lib/inspec-test-fixture.rb
@@ -1,2 +1,5 @@
+lib = File.expand_path("../../lib", __FILE__)
+$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
+
 require 'inspec-test-fixture/version'
 require 'inspec-test-fixture/plugin'
diff --git a/test/unit/mock/config_dirs/test-fixture-1-float/gems/2.4.0/gems/inspec-test-fixture-0.1.0/lib/inspec-test-fixture.rb b/test/unit/mock/config_dirs/test-fixture-1-float/gems/2.4.0/gems/inspec-test-fixture-0.1.0/lib/inspec-test-fixture.rb
index bab3b49f6..a2a6059c0 100644
--- a/test/unit/mock/config_dirs/test-fixture-1-float/gems/2.4.0/gems/inspec-test-fixture-0.1.0/lib/inspec-test-fixture.rb
+++ b/test/unit/mock/config_dirs/test-fixture-1-float/gems/2.4.0/gems/inspec-test-fixture-0.1.0/lib/inspec-test-fixture.rb
@@ -1,2 +1,5 @@
+lib = File.expand_path("../../lib", __FILE__)
+$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
+
 require 'inspec-test-fixture/version'
 require 'inspec-test-fixture/plugin'
diff --git a/test/unit/mock/config_dirs/test-fixture-1-float/gems/2.5.0/gems/inspec-test-fixture-0.1.0/lib/inspec-test-fixture.rb b/test/unit/mock/config_dirs/test-fixture-1-float/gems/2.5.0/gems/inspec-test-fixture-0.1.0/lib/inspec-test-fixture.rb
index bab3b49f6..a2a6059c0 100644
--- a/test/unit/mock/config_dirs/test-fixture-1-float/gems/2.5.0/gems/inspec-test-fixture-0.1.0/lib/inspec-test-fixture.rb
+++ b/test/unit/mock/config_dirs/test-fixture-1-float/gems/2.5.0/gems/inspec-test-fixture-0.1.0/lib/inspec-test-fixture.rb
@@ -1,2 +1,5 @@
+lib = File.expand_path("../../lib", __FILE__)
+$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
+
 require 'inspec-test-fixture/version'
 require 'inspec-test-fixture/plugin'
diff --git a/test/unit/mock/config_dirs/train-test-fixture/gems/2.3.0/gems/train-test-fixture-0.1.0/LICENSE b/test/unit/mock/config_dirs/train-test-fixture/gems/2.3.0/gems/train-test-fixture-0.1.0/LICENSE
new file mode 100644
index 000000000..11069edd7
--- /dev/null
+++ b/test/unit/mock/config_dirs/train-test-fixture/gems/2.3.0/gems/train-test-fixture-0.1.0/LICENSE
@@ -0,0 +1,201 @@
+                              Apache License
+                        Version 2.0, January 2004
+                     http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
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diff --git a/test/unit/mock/config_dirs/train-test-fixture/gems/2.3.0/gems/train-test-fixture-0.1.0/README.md b/test/unit/mock/config_dirs/train-test-fixture/gems/2.3.0/gems/train-test-fixture-0.1.0/README.md
new file mode 100644
index 000000000..c886cf2c0
--- /dev/null
+++ b/test/unit/mock/config_dirs/train-test-fixture/gems/2.3.0/gems/train-test-fixture-0.1.0/README.md
@@ -0,0 +1,5 @@
+This is a very simple train transport plugin. It provided fixed responses to file.content and command.stdout/stderr/exit_status.
+
+It is not a good example to use for learning, nor a good base for starting your own plugin - it's intended for for use during the testing of Train.
+
+For good examples of plugin development, see train/examples/plugin.
\ No newline at end of file
diff --git a/test/unit/mock/config_dirs/train-test-fixture/gems/2.3.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture.rb b/test/unit/mock/config_dirs/train-test-fixture/gems/2.3.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture.rb
new file mode 100644
index 000000000..b5f5ed68b
--- /dev/null
+++ b/test/unit/mock/config_dirs/train-test-fixture/gems/2.3.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture.rb
@@ -0,0 +1,4 @@
+lib = File.expand_path("../../lib", __FILE__)
+$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
+
+require 'train-test-fixture/transport'
\ No newline at end of file
diff --git a/test/unit/mock/config_dirs/train-test-fixture/gems/2.3.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/connection.rb b/test/unit/mock/config_dirs/train-test-fixture/gems/2.3.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/connection.rb
new file mode 100644
index 000000000..8d00de291
--- /dev/null
+++ b/test/unit/mock/config_dirs/train-test-fixture/gems/2.3.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/connection.rb
@@ -0,0 +1,39 @@
+require 'train-test-fixture/platform'
+require 'train/transports/local'
+
+module TrainPlugins
+  module TestFixture
+    class Connection < Train::Plugins::Transport::BaseConnection
+      include TrainPlugins::TestFixture::Platform
+
+      def initialize(options)
+        super(options)
+      end
+
+      def local?
+        true
+      end
+
+      private
+
+      def run_command_via_connection(cmd)
+        Train::Transports::Local::CommandResult.new(
+          'Mock Command Result stdout',
+          'Mock Command Result stderr',
+          17
+        )
+      end
+
+      def file_via_connection(path, *args)
+        MockFile.new(self, path)
+      end
+
+      class MockFile < Train::File
+        def content
+          # Remarkably, the content is always the same.
+          'Lorem Ipsum'
+        end
+      end
+    end
+  end
+end
diff --git a/test/unit/mock/config_dirs/train-test-fixture/gems/2.3.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/platform.rb b/test/unit/mock/config_dirs/train-test-fixture/gems/2.3.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/platform.rb
new file mode 100644
index 000000000..fe2171c81
--- /dev/null
+++ b/test/unit/mock/config_dirs/train-test-fixture/gems/2.3.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/platform.rb
@@ -0,0 +1,18 @@
+require 'train-test-fixture/version'
+
+module TrainPlugins
+  module TestFixture
+    module Platform
+      def platform
+        # Build this platform's family declarations.
+        # You'll need at least unix and windows to make the file() resource work.
+        Train::Platforms.name('test-fixture').in_family('unix')
+        Train::Platforms.name('test-fixture').in_family('windows')
+        force_platform!('test-fixture',
+          release: TrainPlugins::TestFixture::VERSION,
+          arch: 'mock',
+        )
+      end
+    end
+  end
+end
diff --git a/test/unit/mock/config_dirs/train-test-fixture/gems/2.3.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/transport.rb b/test/unit/mock/config_dirs/train-test-fixture/gems/2.3.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/transport.rb
new file mode 100644
index 000000000..c811209e6
--- /dev/null
+++ b/test/unit/mock/config_dirs/train-test-fixture/gems/2.3.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/transport.rb
@@ -0,0 +1,14 @@
+require 'train-test-fixture/connection'
+
+module TrainPlugins
+  module TestFixture
+    class Transport < Train.plugin(1)
+      name 'test-fixture'
+
+      def connection(_ = nil)
+        @connection ||= TrainPlugins::TestFixture::Connection.new(@options)
+      end
+
+    end
+  end
+end
diff --git a/test/unit/mock/config_dirs/train-test-fixture/gems/2.3.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/version.rb b/test/unit/mock/config_dirs/train-test-fixture/gems/2.3.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/version.rb
new file mode 100644
index 000000000..b68f3d9b6
--- /dev/null
+++ b/test/unit/mock/config_dirs/train-test-fixture/gems/2.3.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/version.rb
@@ -0,0 +1,5 @@
+module TrainPlugins
+  module TestFixture
+    VERSION = '0.1.0'
+  end
+end
diff --git a/test/unit/mock/config_dirs/train-test-fixture/gems/2.3.0/gems/train-test-fixture-0.1.0/train-test-fixture.gemspec b/test/unit/mock/config_dirs/train-test-fixture/gems/2.3.0/gems/train-test-fixture-0.1.0/train-test-fixture.gemspec
new file mode 100644
index 000000000..8b451547e
--- /dev/null
+++ b/test/unit/mock/config_dirs/train-test-fixture/gems/2.3.0/gems/train-test-fixture-0.1.0/train-test-fixture.gemspec
@@ -0,0 +1,35 @@
+
+lib = File.expand_path("../lib", __FILE__)
+$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
+
+Gem::Specification.new do |spec|
+  spec.name          = "train-test-fixture"
+  spec.version       = '0.1.0'
+  spec.authors       = ["Inspec core engineering team"]
+  spec.email         = ["hello@chef.io"]
+  spec.license       = 'Apache-2.0'
+
+  spec.summary       = %q{Test train plugin. Not intended for use as an example.}
+  spec.description   = <<~EOD
+    Train plugin used in testing Train's plugin loader and InSpec's plugin manager.
+    This plugin does things that a normal plugin should not.  Do not use it as an
+    example or as a starting point for plugin of your own.  For that, please see
+    https://github.com/inspec/train/tree/master/examples/plugins
+  EOD
+  spec.homepage      = "https://github.com/inspec/train"
+
+  spec.files         = %w{
+    README.md
+    LICENSE
+    lib/train-test-fixture.rb
+    lib/train-test-fixture/version.rb
+    lib/train-test-fixture/transport.rb
+    lib/train-test-fixture/connection.rb
+    lib/train-test-fixture/platform.rb
+    train-test-fixture.gemspec
+  }
+  spec.executables   = []
+  spec.require_paths = ["lib"]
+
+  # No deps
+end
diff --git a/test/unit/mock/config_dirs/train-test-fixture/gems/2.3.0/specifications/train-test-fixture-0.1.0.gemspec b/test/unit/mock/config_dirs/train-test-fixture/gems/2.3.0/specifications/train-test-fixture-0.1.0.gemspec
new file mode 100644
index 000000000..9b0a3cd02
--- /dev/null
+++ b/test/unit/mock/config_dirs/train-test-fixture/gems/2.3.0/specifications/train-test-fixture-0.1.0.gemspec
@@ -0,0 +1,20 @@
+# -*- encoding: utf-8 -*-
+# stub: train-test-fixture 0.1.0 ruby lib
+
+Gem::Specification.new do |s|
+  s.name = "train-test-fixture".freeze
+  s.version = "0.1.0"
+
+  s.required_rubygems_version = Gem::Requirement.new(">= 0".freeze) if s.respond_to? :required_rubygems_version=
+  s.require_paths = ["lib".freeze]
+  s.authors = ["Inspec core engineering team".freeze]
+  s.date = "2018-09-26"
+  s.description = "Train plugin used in testing Train's plugin loader and InSpec's plugin manager.\nThis plugin does things that a normal plugin should not.  Do not use it as an\nexample or as a starting point for plugin of your own.  For that, please see\nhttps://github.com/inspec/train/tree/master/examples/plugins\n".freeze
+  s.email = ["hello@chef.io".freeze]
+  s.homepage = "https://github.com/inspec/train".freeze
+  s.licenses = ["Apache-2.0".freeze]
+  s.rubygems_version = "2.6.13".freeze
+  s.summary = "Test train plugin. Not intended for use as an example.".freeze
+
+  s.installed_by_version = "2.6.13" if s.respond_to? :installed_by_version
+end
diff --git a/test/unit/mock/config_dirs/train-test-fixture/gems/2.4.0/gems/train-test-fixture-0.1.0/LICENSE b/test/unit/mock/config_dirs/train-test-fixture/gems/2.4.0/gems/train-test-fixture-0.1.0/LICENSE
new file mode 100644
index 000000000..11069edd7
--- /dev/null
+++ b/test/unit/mock/config_dirs/train-test-fixture/gems/2.4.0/gems/train-test-fixture-0.1.0/LICENSE
@@ -0,0 +1,201 @@
+                              Apache License
+                        Version 2.0, January 2004
+                     http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
+   "License" shall mean the terms and conditions for use, reproduction,
+   and distribution as defined by Sections 1 through 9 of this document.
+
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+   "You" (or "Your") shall mean an individual or Legal Entity
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diff --git a/test/unit/mock/config_dirs/train-test-fixture/gems/2.4.0/gems/train-test-fixture-0.1.0/README.md b/test/unit/mock/config_dirs/train-test-fixture/gems/2.4.0/gems/train-test-fixture-0.1.0/README.md
new file mode 100644
index 000000000..c886cf2c0
--- /dev/null
+++ b/test/unit/mock/config_dirs/train-test-fixture/gems/2.4.0/gems/train-test-fixture-0.1.0/README.md
@@ -0,0 +1,5 @@
+This is a very simple train transport plugin. It provided fixed responses to file.content and command.stdout/stderr/exit_status.
+
+It is not a good example to use for learning, nor a good base for starting your own plugin - it's intended for for use during the testing of Train.
+
+For good examples of plugin development, see train/examples/plugin.
\ No newline at end of file
diff --git a/test/unit/mock/config_dirs/train-test-fixture/gems/2.4.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture.rb b/test/unit/mock/config_dirs/train-test-fixture/gems/2.4.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture.rb
new file mode 100644
index 000000000..b5f5ed68b
--- /dev/null
+++ b/test/unit/mock/config_dirs/train-test-fixture/gems/2.4.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture.rb
@@ -0,0 +1,4 @@
+lib = File.expand_path("../../lib", __FILE__)
+$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
+
+require 'train-test-fixture/transport'
\ No newline at end of file
diff --git a/test/unit/mock/config_dirs/train-test-fixture/gems/2.4.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/connection.rb b/test/unit/mock/config_dirs/train-test-fixture/gems/2.4.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/connection.rb
new file mode 100644
index 000000000..8d00de291
--- /dev/null
+++ b/test/unit/mock/config_dirs/train-test-fixture/gems/2.4.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/connection.rb
@@ -0,0 +1,39 @@
+require 'train-test-fixture/platform'
+require 'train/transports/local'
+
+module TrainPlugins
+  module TestFixture
+    class Connection < Train::Plugins::Transport::BaseConnection
+      include TrainPlugins::TestFixture::Platform
+
+      def initialize(options)
+        super(options)
+      end
+
+      def local?
+        true
+      end
+
+      private
+
+      def run_command_via_connection(cmd)
+        Train::Transports::Local::CommandResult.new(
+          'Mock Command Result stdout',
+          'Mock Command Result stderr',
+          17
+        )
+      end
+
+      def file_via_connection(path, *args)
+        MockFile.new(self, path)
+      end
+
+      class MockFile < Train::File
+        def content
+          # Remarkably, the content is always the same.
+          'Lorem Ipsum'
+        end
+      end
+    end
+  end
+end
diff --git a/test/unit/mock/config_dirs/train-test-fixture/gems/2.4.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/platform.rb b/test/unit/mock/config_dirs/train-test-fixture/gems/2.4.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/platform.rb
new file mode 100644
index 000000000..fe2171c81
--- /dev/null
+++ b/test/unit/mock/config_dirs/train-test-fixture/gems/2.4.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/platform.rb
@@ -0,0 +1,18 @@
+require 'train-test-fixture/version'
+
+module TrainPlugins
+  module TestFixture
+    module Platform
+      def platform
+        # Build this platform's family declarations.
+        # You'll need at least unix and windows to make the file() resource work.
+        Train::Platforms.name('test-fixture').in_family('unix')
+        Train::Platforms.name('test-fixture').in_family('windows')
+        force_platform!('test-fixture',
+          release: TrainPlugins::TestFixture::VERSION,
+          arch: 'mock',
+        )
+      end
+    end
+  end
+end
diff --git a/test/unit/mock/config_dirs/train-test-fixture/gems/2.4.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/transport.rb b/test/unit/mock/config_dirs/train-test-fixture/gems/2.4.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/transport.rb
new file mode 100644
index 000000000..c811209e6
--- /dev/null
+++ b/test/unit/mock/config_dirs/train-test-fixture/gems/2.4.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/transport.rb
@@ -0,0 +1,14 @@
+require 'train-test-fixture/connection'
+
+module TrainPlugins
+  module TestFixture
+    class Transport < Train.plugin(1)
+      name 'test-fixture'
+
+      def connection(_ = nil)
+        @connection ||= TrainPlugins::TestFixture::Connection.new(@options)
+      end
+
+    end
+  end
+end
diff --git a/test/unit/mock/config_dirs/train-test-fixture/gems/2.4.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/version.rb b/test/unit/mock/config_dirs/train-test-fixture/gems/2.4.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/version.rb
new file mode 100644
index 000000000..b68f3d9b6
--- /dev/null
+++ b/test/unit/mock/config_dirs/train-test-fixture/gems/2.4.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/version.rb
@@ -0,0 +1,5 @@
+module TrainPlugins
+  module TestFixture
+    VERSION = '0.1.0'
+  end
+end
diff --git a/test/unit/mock/config_dirs/train-test-fixture/gems/2.4.0/gems/train-test-fixture-0.1.0/train-test-fixture.gemspec b/test/unit/mock/config_dirs/train-test-fixture/gems/2.4.0/gems/train-test-fixture-0.1.0/train-test-fixture.gemspec
new file mode 100644
index 000000000..8b451547e
--- /dev/null
+++ b/test/unit/mock/config_dirs/train-test-fixture/gems/2.4.0/gems/train-test-fixture-0.1.0/train-test-fixture.gemspec
@@ -0,0 +1,35 @@
+
+lib = File.expand_path("../lib", __FILE__)
+$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
+
+Gem::Specification.new do |spec|
+  spec.name          = "train-test-fixture"
+  spec.version       = '0.1.0'
+  spec.authors       = ["Inspec core engineering team"]
+  spec.email         = ["hello@chef.io"]
+  spec.license       = 'Apache-2.0'
+
+  spec.summary       = %q{Test train plugin. Not intended for use as an example.}
+  spec.description   = <<~EOD
+    Train plugin used in testing Train's plugin loader and InSpec's plugin manager.
+    This plugin does things that a normal plugin should not.  Do not use it as an
+    example or as a starting point for plugin of your own.  For that, please see
+    https://github.com/inspec/train/tree/master/examples/plugins
+  EOD
+  spec.homepage      = "https://github.com/inspec/train"
+
+  spec.files         = %w{
+    README.md
+    LICENSE
+    lib/train-test-fixture.rb
+    lib/train-test-fixture/version.rb
+    lib/train-test-fixture/transport.rb
+    lib/train-test-fixture/connection.rb
+    lib/train-test-fixture/platform.rb
+    train-test-fixture.gemspec
+  }
+  spec.executables   = []
+  spec.require_paths = ["lib"]
+
+  # No deps
+end
diff --git a/test/unit/mock/config_dirs/train-test-fixture/gems/2.4.0/specifications/train-test-fixture-0.1.0.gemspec b/test/unit/mock/config_dirs/train-test-fixture/gems/2.4.0/specifications/train-test-fixture-0.1.0.gemspec
new file mode 100644
index 000000000..9b0a3cd02
--- /dev/null
+++ b/test/unit/mock/config_dirs/train-test-fixture/gems/2.4.0/specifications/train-test-fixture-0.1.0.gemspec
@@ -0,0 +1,20 @@
+# -*- encoding: utf-8 -*-
+# stub: train-test-fixture 0.1.0 ruby lib
+
+Gem::Specification.new do |s|
+  s.name = "train-test-fixture".freeze
+  s.version = "0.1.0"
+
+  s.required_rubygems_version = Gem::Requirement.new(">= 0".freeze) if s.respond_to? :required_rubygems_version=
+  s.require_paths = ["lib".freeze]
+  s.authors = ["Inspec core engineering team".freeze]
+  s.date = "2018-09-26"
+  s.description = "Train plugin used in testing Train's plugin loader and InSpec's plugin manager.\nThis plugin does things that a normal plugin should not.  Do not use it as an\nexample or as a starting point for plugin of your own.  For that, please see\nhttps://github.com/inspec/train/tree/master/examples/plugins\n".freeze
+  s.email = ["hello@chef.io".freeze]
+  s.homepage = "https://github.com/inspec/train".freeze
+  s.licenses = ["Apache-2.0".freeze]
+  s.rubygems_version = "2.6.13".freeze
+  s.summary = "Test train plugin. Not intended for use as an example.".freeze
+
+  s.installed_by_version = "2.6.13" if s.respond_to? :installed_by_version
+end
diff --git a/test/unit/mock/config_dirs/train-test-fixture/gems/2.5.0/gems/train-test-fixture-0.1.0/LICENSE b/test/unit/mock/config_dirs/train-test-fixture/gems/2.5.0/gems/train-test-fixture-0.1.0/LICENSE
new file mode 100644
index 000000000..11069edd7
--- /dev/null
+++ b/test/unit/mock/config_dirs/train-test-fixture/gems/2.5.0/gems/train-test-fixture-0.1.0/LICENSE
@@ -0,0 +1,201 @@
+                              Apache License
+                        Version 2.0, January 2004
+                     http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
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+
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+   editorial revisions, annotations, elaborations, or other modifications
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+   "Contributor" shall mean Licensor and any individual or Legal Entity
+   on behalf of whom a Contribution has been received by Licensor and
+   subsequently incorporated within the Work.
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+   copyright license to reproduce, prepare Derivative Works of,
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+   Work and such Derivative Works in Source or Object form.
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+3. Grant of Patent License. Subject to the terms and conditions of
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+   where such license applies only to those patent claims licensable
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+   Contribution(s) alone or by combination of their Contribution(s)
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+   institute patent litigation against any entity (including a
+   cross-claim or counterclaim in a lawsuit) alleging that the Work
+   or a Contribution incorporated within the Work constitutes direct
+   or contributory patent infringement, then any patent licenses
+   granted to You under this License for that Work shall terminate
+   as of the date such litigation is filed.
+
+4. Redistribution. You may reproduce and distribute copies of the
+   Work or Derivative Works thereof in any medium, with or without
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+   meet the following conditions:
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+       Derivative Works a copy of this License; and
+
+   (b) You must cause any modified files to carry prominent notices
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+
+   (c) You must retain, in the Source form of any Derivative Works
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+
+   (d) If the Work includes a "NOTICE" text file as part of its
+       distribution, then any Derivative Works that You distribute must
+       include a readable copy of the attribution notices contained
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+       documentation, if provided along with the Derivative Works; or,
+       within a display generated by the Derivative Works, if and
+       wherever such third-party notices normally appear. The contents
+       of the NOTICE file are for informational purposes only and
+       do not modify the License. You may add Your own attribution
+       notices within Derivative Works that You distribute, alongside
+       or as an addendum to the NOTICE text from the Work, provided
+       that such additional attribution notices cannot be construed
+       as modifying the License.
+
+   You may add Your own copyright statement to Your modifications and
+   may provide additional or different license terms and conditions
+   for use, reproduction, or distribution of Your modifications, or
+   for any such Derivative Works as a whole, provided Your use,
+   reproduction, and distribution of the Work otherwise complies with
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+
+5. Submission of Contributions. Unless You explicitly state otherwise,
+   any Contribution intentionally submitted for inclusion in the Work
+   by You to the Licensor shall be under the terms and conditions of
+   this License, without any additional terms or conditions.
+   Notwithstanding the above, nothing herein shall supersede or modify
+   the terms of any separate license agreement you may have executed
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diff --git a/test/unit/mock/config_dirs/train-test-fixture/gems/2.5.0/gems/train-test-fixture-0.1.0/README.md b/test/unit/mock/config_dirs/train-test-fixture/gems/2.5.0/gems/train-test-fixture-0.1.0/README.md
new file mode 100644
index 000000000..c886cf2c0
--- /dev/null
+++ b/test/unit/mock/config_dirs/train-test-fixture/gems/2.5.0/gems/train-test-fixture-0.1.0/README.md
@@ -0,0 +1,5 @@
+This is a very simple train transport plugin. It provided fixed responses to file.content and command.stdout/stderr/exit_status.
+
+It is not a good example to use for learning, nor a good base for starting your own plugin - it's intended for for use during the testing of Train.
+
+For good examples of plugin development, see train/examples/plugin.
\ No newline at end of file
diff --git a/test/unit/mock/config_dirs/train-test-fixture/gems/2.5.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture.rb b/test/unit/mock/config_dirs/train-test-fixture/gems/2.5.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture.rb
new file mode 100644
index 000000000..b5f5ed68b
--- /dev/null
+++ b/test/unit/mock/config_dirs/train-test-fixture/gems/2.5.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture.rb
@@ -0,0 +1,4 @@
+lib = File.expand_path("../../lib", __FILE__)
+$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
+
+require 'train-test-fixture/transport'
\ No newline at end of file
diff --git a/test/unit/mock/config_dirs/train-test-fixture/gems/2.5.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/connection.rb b/test/unit/mock/config_dirs/train-test-fixture/gems/2.5.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/connection.rb
new file mode 100644
index 000000000..8d00de291
--- /dev/null
+++ b/test/unit/mock/config_dirs/train-test-fixture/gems/2.5.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/connection.rb
@@ -0,0 +1,39 @@
+require 'train-test-fixture/platform'
+require 'train/transports/local'
+
+module TrainPlugins
+  module TestFixture
+    class Connection < Train::Plugins::Transport::BaseConnection
+      include TrainPlugins::TestFixture::Platform
+
+      def initialize(options)
+        super(options)
+      end
+
+      def local?
+        true
+      end
+
+      private
+
+      def run_command_via_connection(cmd)
+        Train::Transports::Local::CommandResult.new(
+          'Mock Command Result stdout',
+          'Mock Command Result stderr',
+          17
+        )
+      end
+
+      def file_via_connection(path, *args)
+        MockFile.new(self, path)
+      end
+
+      class MockFile < Train::File
+        def content
+          # Remarkably, the content is always the same.
+          'Lorem Ipsum'
+        end
+      end
+    end
+  end
+end
diff --git a/test/unit/mock/config_dirs/train-test-fixture/gems/2.5.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/platform.rb b/test/unit/mock/config_dirs/train-test-fixture/gems/2.5.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/platform.rb
new file mode 100644
index 000000000..fe2171c81
--- /dev/null
+++ b/test/unit/mock/config_dirs/train-test-fixture/gems/2.5.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/platform.rb
@@ -0,0 +1,18 @@
+require 'train-test-fixture/version'
+
+module TrainPlugins
+  module TestFixture
+    module Platform
+      def platform
+        # Build this platform's family declarations.
+        # You'll need at least unix and windows to make the file() resource work.
+        Train::Platforms.name('test-fixture').in_family('unix')
+        Train::Platforms.name('test-fixture').in_family('windows')
+        force_platform!('test-fixture',
+          release: TrainPlugins::TestFixture::VERSION,
+          arch: 'mock',
+        )
+      end
+    end
+  end
+end
diff --git a/test/unit/mock/config_dirs/train-test-fixture/gems/2.5.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/transport.rb b/test/unit/mock/config_dirs/train-test-fixture/gems/2.5.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/transport.rb
new file mode 100644
index 000000000..c811209e6
--- /dev/null
+++ b/test/unit/mock/config_dirs/train-test-fixture/gems/2.5.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/transport.rb
@@ -0,0 +1,14 @@
+require 'train-test-fixture/connection'
+
+module TrainPlugins
+  module TestFixture
+    class Transport < Train.plugin(1)
+      name 'test-fixture'
+
+      def connection(_ = nil)
+        @connection ||= TrainPlugins::TestFixture::Connection.new(@options)
+      end
+
+    end
+  end
+end
diff --git a/test/unit/mock/config_dirs/train-test-fixture/gems/2.5.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/version.rb b/test/unit/mock/config_dirs/train-test-fixture/gems/2.5.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/version.rb
new file mode 100644
index 000000000..b68f3d9b6
--- /dev/null
+++ b/test/unit/mock/config_dirs/train-test-fixture/gems/2.5.0/gems/train-test-fixture-0.1.0/lib/train-test-fixture/version.rb
@@ -0,0 +1,5 @@
+module TrainPlugins
+  module TestFixture
+    VERSION = '0.1.0'
+  end
+end
diff --git a/test/unit/mock/config_dirs/train-test-fixture/gems/2.5.0/gems/train-test-fixture-0.1.0/train-test-fixture.gemspec b/test/unit/mock/config_dirs/train-test-fixture/gems/2.5.0/gems/train-test-fixture-0.1.0/train-test-fixture.gemspec
new file mode 100644
index 000000000..8b451547e
--- /dev/null
+++ b/test/unit/mock/config_dirs/train-test-fixture/gems/2.5.0/gems/train-test-fixture-0.1.0/train-test-fixture.gemspec
@@ -0,0 +1,35 @@
+
+lib = File.expand_path("../lib", __FILE__)
+$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
+
+Gem::Specification.new do |spec|
+  spec.name          = "train-test-fixture"
+  spec.version       = '0.1.0'
+  spec.authors       = ["Inspec core engineering team"]
+  spec.email         = ["hello@chef.io"]
+  spec.license       = 'Apache-2.0'
+
+  spec.summary       = %q{Test train plugin. Not intended for use as an example.}
+  spec.description   = <<~EOD
+    Train plugin used in testing Train's plugin loader and InSpec's plugin manager.
+    This plugin does things that a normal plugin should not.  Do not use it as an
+    example or as a starting point for plugin of your own.  For that, please see
+    https://github.com/inspec/train/tree/master/examples/plugins
+  EOD
+  spec.homepage      = "https://github.com/inspec/train"
+
+  spec.files         = %w{
+    README.md
+    LICENSE
+    lib/train-test-fixture.rb
+    lib/train-test-fixture/version.rb
+    lib/train-test-fixture/transport.rb
+    lib/train-test-fixture/connection.rb
+    lib/train-test-fixture/platform.rb
+    train-test-fixture.gemspec
+  }
+  spec.executables   = []
+  spec.require_paths = ["lib"]
+
+  # No deps
+end
diff --git a/test/unit/mock/config_dirs/train-test-fixture/gems/2.5.0/specifications/train-test-fixture-0.1.0.gemspec b/test/unit/mock/config_dirs/train-test-fixture/gems/2.5.0/specifications/train-test-fixture-0.1.0.gemspec
new file mode 100644
index 000000000..9b0a3cd02
--- /dev/null
+++ b/test/unit/mock/config_dirs/train-test-fixture/gems/2.5.0/specifications/train-test-fixture-0.1.0.gemspec
@@ -0,0 +1,20 @@
+# -*- encoding: utf-8 -*-
+# stub: train-test-fixture 0.1.0 ruby lib
+
+Gem::Specification.new do |s|
+  s.name = "train-test-fixture".freeze
+  s.version = "0.1.0"
+
+  s.required_rubygems_version = Gem::Requirement.new(">= 0".freeze) if s.respond_to? :required_rubygems_version=
+  s.require_paths = ["lib".freeze]
+  s.authors = ["Inspec core engineering team".freeze]
+  s.date = "2018-09-26"
+  s.description = "Train plugin used in testing Train's plugin loader and InSpec's plugin manager.\nThis plugin does things that a normal plugin should not.  Do not use it as an\nexample or as a starting point for plugin of your own.  For that, please see\nhttps://github.com/inspec/train/tree/master/examples/plugins\n".freeze
+  s.email = ["hello@chef.io".freeze]
+  s.homepage = "https://github.com/inspec/train".freeze
+  s.licenses = ["Apache-2.0".freeze]
+  s.rubygems_version = "2.6.13".freeze
+  s.summary = "Test train plugin. Not intended for use as an example.".freeze
+
+  s.installed_by_version = "2.6.13" if s.respond_to? :installed_by_version
+end
diff --git a/test/unit/mock/config_dirs/train-test-fixture/plugins.json b/test/unit/mock/config_dirs/train-test-fixture/plugins.json
new file mode 100644
index 000000000..4ab04a0f7
--- /dev/null
+++ b/test/unit/mock/config_dirs/train-test-fixture/plugins.json
@@ -0,0 +1,8 @@
+{
+  "plugins_config_version" : "1.0.0",
+  "plugins": [
+    {
+      "name": "train-test-fixture"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/test/unit/mock/plugins/inspec-test-fixture/lib/inspec-test-fixture.rb b/test/unit/mock/plugins/inspec-test-fixture/lib/inspec-test-fixture.rb
index 0dbb3c858..e8b88aa91 100644
--- a/test/unit/mock/plugins/inspec-test-fixture/lib/inspec-test-fixture.rb
+++ b/test/unit/mock/plugins/inspec-test-fixture/lib/inspec-test-fixture.rb
@@ -1,2 +1,5 @@
+lib = File.expand_path("../../lib", __FILE__)
+$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
+
 require_relative 'inspec-test-fixture/version'
 require_relative 'inspec-test-fixture/plugin'
diff --git a/test/unit/plugin/v2/loader_test.rb b/test/unit/plugin/v2/loader_test.rb
index e534e8077..4550bbcea 100644
--- a/test/unit/plugin/v2/loader_test.rb
+++ b/test/unit/plugin/v2/loader_test.rb
@@ -4,6 +4,8 @@ require 'minitest/autorun'
 require 'minitest/test'
 require_relative '../../../../lib/inspec/plugin/v2'
 
+require 'train' # Needed for Train plugin testing
+
 class PluginLoaderTests < MiniTest::Test
 
   @@orig_home = Dir.home
@@ -228,4 +230,28 @@ class PluginLoaderTests < MiniTest::Test
     assert InspecPlugins::MeaningOfLife.const_defined?(:MockPlugin), 'impl_class should now be defined'
 
   end
-end
+
+  #====================================================================#
+  #                       Train Plugin Special Handling                #
+  #====================================================================#
+  def test_when_a_train_plugin_is_installed_via_gem_and_required
+    ENV['INSPEC_CONFIG_DIR'] = File.join(@config_dir_path, 'train-test-fixture')
+
+    reg = Inspec::Plugin::V2::Registry.instance
+    loader = nil
+    assert_silent { loader = Inspec::Plugin::V2::Loader.new }
+
+    plugin_name = :'train-test-fixture'
+    assert(reg.known_plugin?(plugin_name), 'The train plugin should be known after loader init')
+
+    status = reg[plugin_name]
+    assert_equal(:'train-1', status.api_generation, "It should have a special value for api gen (:'train-1')")
+    refute(reg.loaded_plugin?(plugin_name), 'It should not be loaded until needed')
+
+    # 'Requiring' the gem name should succeed
+
+    require 'train-test-fixture'
+    assert_includes(Train::Plugins.registry.keys, 'test-fixture', 'After requiring the gem, the Train Registry should know the plugin is loaded')
+    assert(reg.loaded_plugin?(plugin_name), 'After requiring, InSpec Registry should know the the plugin is loaded')
+  end
+end
\ No newline at end of file