Merge pull request #4768 from inspec/zenspider/bug628

Wire up backend to rspec metadata, allowing for example groups to use resources

inspec.gemspec

@@ -23,11 +23,11 @@ Gem::Specification.new do |spec|
 
   spec.required_ruby_version = ">= 2.4"
 
-  spec.add_dependency "train", "~> 3.0" # Inspec 4 must have train 2+; 3+ if we include train-winrm
+  spec.add_dependency "train", "~> 3.0"
   # Train plugins we ship with InSpec
   spec.add_dependency "train-habitat", "~> 0.1"
   spec.add_dependency "train-aws", "~> 0.1"
-  spec.add_dependency "train-winrm", "~> 0.2" # Requires train 3+
+  spec.add_dependency "train-winrm", "~> 0.2"
 
   # Implementation dependencies
   spec.add_dependency "chef-telemetry", "~> 1.0"

lib/inspec/rspec_extensions.rb

@@ -11,14 +11,13 @@ module Inspec
   module DescribeDslLazyLoader
     # Support for Describe DSL plugins
     def method_missing(method_name, *arguments, &block)
-      # TODO: need a backend available at the describe level... class method somewhere?
-      # # see if it is a resource first
-      # begin
-      #   resource = Inspec::DSL.method_missing_resource(:where_is_backend?, method_name, *arguments)
-      #   return resource if resource
-      # rescue LoadError
-      #   # pass through
-      # end
+      begin
+        backend = metadata[:backend] # populated via Inspec::Runner#add_resource
+        resource = Inspec::DSL.method_missing_resource(backend, method_name, *arguments)
+        return resource if resource
+      rescue LoadError
+        # pass through
+      end
 
       # Check to see if there is a describe_dsl plugin activator hook with the method name
       registry = Inspec::Plugin::V2::Registry.instance

lib/inspec/runner.rb

@@ -307,6 +307,8 @@ module Inspec
     def add_resource(method_name, arg, opts, block)
       case method_name
       when "describe"
+        opts = { backend: @test_collector.backend }.merge opts
+
         @test_collector.example_group(*arg, opts, &block)
       when "expect"
         block.example_group

lib/inspec/runner_rspec.rb

@@ -10,6 +10,8 @@ require "inspec/rspec_extensions"
 
 module Inspec
   class RunnerRspec
+    attr_accessor :formatter
+
     def initialize(conf)
       @conf = conf
       @formatter = nil
@@ -22,29 +24,34 @@ module Inspec
     # @param [Type] &block the block associated with this example group
     # @return [RSpecExampleGroup]
     def example_group(*args, &block)
+      # NOTE: this RUNS immediately
       RSpec::Core::ExampleGroup.describe(*args, &block)
     end
 
+    def formatters
+      RSpec.configuration.formatters.grep(Inspec::Formatters::Base)
+    end
+
     # Add a full profile to the runner. Only pulls in metadata
     #
     # @param [Inspec::Profile] profile
     # @return [nil]
     def add_profile(profile)
-      RSpec.configuration.formatters
-        .find_all { |c| c.is_a?(Inspec::Formatters::Base) }
-        .each do |fmt|
+      formatters.each do |fmt|
         fmt.add_profile(profile)
       end
     end
 
+    def backend
+      formatters.first.backend
+    end
+
     # Configure the backend of the runner.
     #
     # @param [Inspec::Backend] backend
     # @return [nil]
     def backend=(backend)
-      RSpec.configuration.formatters
-        .find_all { |c| c.is_a?(Inspec::Formatters::Base) }
-        .each do |fmt|
+      formatters.each do |fmt|
         fmt.backend = backend
       end
     end