Revamped provisioning JSON generation which includes the entire configuration tree. Plus better testing all around for JSON generation + configuration.

lib/vagrant/actions/vm/provision.rb

@@ -19,7 +19,20 @@ module Vagrant
         def setup_json
           logger.info "Generating JSON and uploading..."
 
-          json = { :project_directory => Vagrant.config.vm.project_directory }.merge(Vagrant.config.chef.json).to_json
+          # Set up initial configuration
+          data = {
+            :config => Vagrant.config,
+            :directory => Vagrant.config.vm.project_directory,
+          }
+
+          # And wrap it under the "vagrant" namespace
+          data = { :vagrant => data }
+
+          # Merge with the "extra data" which isn't put under the
+          # vagrant namespace by default
+          data.merge!(Vagrant.config.chef.json)
+
+          json = data.to_json
 
           SSH.upload!(StringIO.new(json), File.join(Vagrant.config.chef.provisioning_path, "dna.json"))
         end

lib/vagrant/config.rb

@@ -40,6 +40,17 @@ module Vagrant
       def [](key)
         send(key)
       end
+
+      def to_json
+        instance_variables_hash.to_json
+      end
+
+      def instance_variables_hash
+        instance_variables.inject({}) do |acc, iv|
+          acc[iv.to_s[1..-1].to_sym] = instance_variable_get(iv)
+          acc
+        end
+      end
     end
 
     class SSHConfig < Base
@@ -96,6 +107,14 @@ module Vagrant
       def initialize
         @enabled = false
       end
+
+      def to_json
+        # Overridden so that the 'json' key could be removed, since its just
+        # merged into the config anyways
+        data = instance_variables_hash
+        data.delete(:json)
+        data.to_json
+      end
     end
 
     class VagrantConfig < Base

test/vagrant/actions/vm/provision_test.rb

@@ -35,21 +35,35 @@ class ProvisionActionTest < Test::Unit::TestCase
   end
 
   context "generating and uploading json" do
-    should "convert the JSON config to JSON" do
-      Hash.any_instance.expects(:to_json).once.returns("foo")
-      @action.setup_json
-    end
-
-    should "add the project directory to the JSON" do
+    def assert_json
       Vagrant::SSH.expects(:upload!).with do |json, path|
         data = JSON.parse(json.read)
-        assert_equal Vagrant.config.vm.project_directory, data["project_directory"]
+        yield data
         true
       end
 
       @action.setup_json
     end
 
+    should "merge in the extra json specified in the config" do
+      Vagrant.config.chef.json = { :foo => "BAR" }
+      assert_json do |data|
+        assert_equal "BAR", data["foo"]
+      end
+    end
+
+    should "add the directory as a special case to the JSON" do
+      assert_json do |data|
+        assert_equal Vagrant.config.vm.project_directory, data["vagrant"]["directory"]
+      end
+    end
+
+    should "add the config to the JSON" do
+      assert_json do |data|
+        assert_equal Vagrant.config.vm.project_directory, data["vagrant"]["config"]["vm"]["project_directory"]
+      end
+    end
+
     should "upload a StringIO to dna.json" do
       StringIO.expects(:new).with(anything).returns("bar")
       File.expects(:join).with(Vagrant.config.chef.provisioning_path, "dna.json").once.returns("baz")

test/vagrant/config_test.rb

@@ -74,4 +74,50 @@ class ConfigTest < Test::Unit::TestCase
       assert Vagrant::Config.config.loaded?
     end
   end
+
+  context "base class" do
+    setup do
+      @base = Vagrant::Config::Base.new
+    end
+
+    should "forward [] access to methods" do
+      @base.expects(:foo).once
+      @base[:foo]
+    end
+
+    should "return a hash of instance variables" do
+      data = { :foo => "bar", :bar => "baz" }
+
+      data.each do |iv, value|
+        @base.instance_variable_set("@#{iv}".to_sym, value)
+      end
+
+      result = @base.instance_variables_hash
+      assert_equal data.length, result.length
+
+      data.each do |iv, value|
+        assert_equal value, result[iv]
+      end
+    end
+
+    should "convert instance variable hash to json" do
+      @json = mock("json")
+      @iv_hash = mock("iv_hash")
+      @iv_hash.expects(:to_json).once.returns(@json)
+      @base.expects(:instance_variables_hash).returns(@iv_hash)
+      assert_equal @json, @base.to_json
+    end
+  end
+
+  context "chef config" do
+    setup do
+      @config = Vagrant::Config::ChefConfig.new
+      @config.json = "HEY"
+    end
+
+    should "not include the 'json' key in the config dump" do
+      result = JSON.parse(@config.to_json)
+      assert !result.has_key?("json")
+    end
+  end
 end