Merge pull request #302 from chef/requires

Optimize requires for non-omnibus installs

57 files changed, 62 insertions, 62 deletions

diff --git a/lib/chef_zero/data_store/raw_file_store.rb b/lib/chef_zero/data_store/raw_file_store.rb
index b284a09..fbe6888 100644
--- a/lib/chef_zero/data_store/raw_file_store.rb
+++ b/lib/chef_zero/data_store/raw_file_store.rb
@@ -19,7 +19,7 @@
 require_relative "data_already_exists_error"
 require_relative "data_not_found_error"
 require_relative "interface_v2"
-require "fileutils"
+require "fileutils" unless defined?(FileUtils)
 
 module ChefZero
   module DataStore
diff --git a/lib/chef_zero/endpoints/acl_endpoint.rb b/lib/chef_zero/endpoints/acl_endpoint.rb
index 328512a..89a85f7 100644
--- a/lib/chef_zero/endpoints/acl_endpoint.rb
+++ b/lib/chef_zero/endpoints/acl_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "../rest_base"
 require_relative "../chef_data/acl_path"
 
diff --git a/lib/chef_zero/endpoints/acls_endpoint.rb b/lib/chef_zero/endpoints/acls_endpoint.rb
index 2ed5b78..f1932de 100644
--- a/lib/chef_zero/endpoints/acls_endpoint.rb
+++ b/lib/chef_zero/endpoints/acls_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "../rest_base"
 require_relative "../chef_data/data_normalizer"
 require_relative "../chef_data/acl_path"
diff --git a/lib/chef_zero/endpoints/actor_endpoint.rb b/lib/chef_zero/endpoints/actor_endpoint.rb
index ad32a28..aed6cfc 100644
--- a/lib/chef_zero/endpoints/actor_endpoint.rb
+++ b/lib/chef_zero/endpoints/actor_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "rest_object_endpoint"
 require_relative "../chef_data/data_normalizer"
 
diff --git a/lib/chef_zero/endpoints/actors_endpoint.rb b/lib/chef_zero/endpoints/actors_endpoint.rb
index 79a72a8..a96e945 100644
--- a/lib/chef_zero/endpoints/actors_endpoint.rb
+++ b/lib/chef_zero/endpoints/actors_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "rest_list_endpoint"
 
 module ChefZero
diff --git a/lib/chef_zero/endpoints/authenticate_user_endpoint.rb b/lib/chef_zero/endpoints/authenticate_user_endpoint.rb
index dfde6e4..96a7097 100644
--- a/lib/chef_zero/endpoints/authenticate_user_endpoint.rb
+++ b/lib/chef_zero/endpoints/authenticate_user_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "../rest_base"
 
 module ChefZero
diff --git a/lib/chef_zero/endpoints/container_endpoint.rb b/lib/chef_zero/endpoints/container_endpoint.rb
index 04724c1..e21ad3a 100644
--- a/lib/chef_zero/endpoints/container_endpoint.rb
+++ b/lib/chef_zero/endpoints/container_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "rest_object_endpoint"
 require_relative "../chef_data/data_normalizer"
 
diff --git a/lib/chef_zero/endpoints/containers_endpoint.rb b/lib/chef_zero/endpoints/containers_endpoint.rb
index 8a6a81b..1015e80 100644
--- a/lib/chef_zero/endpoints/containers_endpoint.rb
+++ b/lib/chef_zero/endpoints/containers_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "rest_list_endpoint"
 
 module ChefZero
diff --git a/lib/chef_zero/endpoints/cookbook_version_endpoint.rb b/lib/chef_zero/endpoints/cookbook_version_endpoint.rb
index 2cad5ea..6953f20 100644
--- a/lib/chef_zero/endpoints/cookbook_version_endpoint.rb
+++ b/lib/chef_zero/endpoints/cookbook_version_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "rest_object_endpoint"
 require_relative "../rest_error_response"
 require_relative "../chef_data/data_normalizer"
diff --git a/lib/chef_zero/endpoints/cookbooks_base.rb b/lib/chef_zero/endpoints/cookbooks_base.rb
index 67061c6..9689584 100644
--- a/lib/chef_zero/endpoints/cookbooks_base.rb
+++ b/lib/chef_zero/endpoints/cookbooks_base.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "../rest_base"
 require_relative "../chef_data/data_normalizer"
 
diff --git a/lib/chef_zero/endpoints/data_bag_endpoint.rb b/lib/chef_zero/endpoints/data_bag_endpoint.rb
index 6b41c7a..d59d903 100644
--- a/lib/chef_zero/endpoints/data_bag_endpoint.rb
+++ b/lib/chef_zero/endpoints/data_bag_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "rest_list_endpoint"
 require_relative "data_bag_item_endpoint"
 require_relative "../rest_error_response"
diff --git a/lib/chef_zero/endpoints/data_bag_item_endpoint.rb b/lib/chef_zero/endpoints/data_bag_item_endpoint.rb
index 0c6f3e2..05613ee 100644
--- a/lib/chef_zero/endpoints/data_bag_item_endpoint.rb
+++ b/lib/chef_zero/endpoints/data_bag_item_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "rest_object_endpoint"
 require_relative "data_bag_item_endpoint"
 require_relative "../chef_data/data_normalizer"
diff --git a/lib/chef_zero/endpoints/data_bags_endpoint.rb b/lib/chef_zero/endpoints/data_bags_endpoint.rb
index ec07343..3475e87 100644
--- a/lib/chef_zero/endpoints/data_bags_endpoint.rb
+++ b/lib/chef_zero/endpoints/data_bags_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "rest_list_endpoint"
 
 module ChefZero
diff --git a/lib/chef_zero/endpoints/environment_cookbook_endpoint.rb b/lib/chef_zero/endpoints/environment_cookbook_endpoint.rb
index d88c198..2c0f377 100644
--- a/lib/chef_zero/endpoints/environment_cookbook_endpoint.rb
+++ b/lib/chef_zero/endpoints/environment_cookbook_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "cookbooks_base"
 
 module ChefZero
diff --git a/lib/chef_zero/endpoints/environment_cookbook_versions_endpoint.rb b/lib/chef_zero/endpoints/environment_cookbook_versions_endpoint.rb
index e09d704..4cb8839 100644
--- a/lib/chef_zero/endpoints/environment_cookbook_versions_endpoint.rb
+++ b/lib/chef_zero/endpoints/environment_cookbook_versions_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "../rest_base"
 require_relative "../rest_error_response"
 
diff --git a/lib/chef_zero/endpoints/environment_cookbooks_endpoint.rb b/lib/chef_zero/endpoints/environment_cookbooks_endpoint.rb
index 07a5a3b..d381c4b 100644
--- a/lib/chef_zero/endpoints/environment_cookbooks_endpoint.rb
+++ b/lib/chef_zero/endpoints/environment_cookbooks_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "cookbooks_base"
 
 module ChefZero
diff --git a/lib/chef_zero/endpoints/environment_endpoint.rb b/lib/chef_zero/endpoints/environment_endpoint.rb
index d2a6d86..5121038 100644
--- a/lib/chef_zero/endpoints/environment_endpoint.rb
+++ b/lib/chef_zero/endpoints/environment_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "rest_object_endpoint"
 require_relative "../chef_data/data_normalizer"
 
diff --git a/lib/chef_zero/endpoints/environment_nodes_endpoint.rb b/lib/chef_zero/endpoints/environment_nodes_endpoint.rb
index 7f0dbab..f2970c2 100644
--- a/lib/chef_zero/endpoints/environment_nodes_endpoint.rb
+++ b/lib/chef_zero/endpoints/environment_nodes_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "../rest_base"
 
 module ChefZero
diff --git a/lib/chef_zero/endpoints/environment_recipes_endpoint.rb b/lib/chef_zero/endpoints/environment_recipes_endpoint.rb
index 1d69d99..2940ad5 100644
--- a/lib/chef_zero/endpoints/environment_recipes_endpoint.rb
+++ b/lib/chef_zero/endpoints/environment_recipes_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "cookbooks_base"
 
 module ChefZero
diff --git a/lib/chef_zero/endpoints/environment_role_endpoint.rb b/lib/chef_zero/endpoints/environment_role_endpoint.rb
index b0d0cf5..77633b1 100644
--- a/lib/chef_zero/endpoints/environment_role_endpoint.rb
+++ b/lib/chef_zero/endpoints/environment_role_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "cookbooks_base"
 
 module ChefZero
diff --git a/lib/chef_zero/endpoints/group_endpoint.rb b/lib/chef_zero/endpoints/group_endpoint.rb
index a831dbc..48f8f20 100644
--- a/lib/chef_zero/endpoints/group_endpoint.rb
+++ b/lib/chef_zero/endpoints/group_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "rest_object_endpoint"
 require_relative "../chef_data/data_normalizer"
 
diff --git a/lib/chef_zero/endpoints/groups_endpoint.rb b/lib/chef_zero/endpoints/groups_endpoint.rb
index 424fe13..01da198 100644
--- a/lib/chef_zero/endpoints/groups_endpoint.rb
+++ b/lib/chef_zero/endpoints/groups_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "rest_list_endpoint"
 
 module ChefZero
diff --git a/lib/chef_zero/endpoints/license_endpoint.rb b/lib/chef_zero/endpoints/license_endpoint.rb
index 949a661..1e5aece 100644
--- a/lib/chef_zero/endpoints/license_endpoint.rb
+++ b/lib/chef_zero/endpoints/license_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "../rest_base"
 
 module ChefZero
diff --git a/lib/chef_zero/endpoints/node_endpoint.rb b/lib/chef_zero/endpoints/node_endpoint.rb
index e311871..206ee28 100644
--- a/lib/chef_zero/endpoints/node_endpoint.rb
+++ b/lib/chef_zero/endpoints/node_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "rest_object_endpoint"
 require_relative "../chef_data/data_normalizer"
 
diff --git a/lib/chef_zero/endpoints/node_identifiers_endpoint.rb b/lib/chef_zero/endpoints/node_identifiers_endpoint.rb
index 2081593..6407557 100644
--- a/lib/chef_zero/endpoints/node_identifiers_endpoint.rb
+++ b/lib/chef_zero/endpoints/node_identifiers_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "../rest_base"
 require "uuidtools"
 
diff --git a/lib/chef_zero/endpoints/nodes_endpoint.rb b/lib/chef_zero/endpoints/nodes_endpoint.rb
index 513b147..19aed7a 100644
--- a/lib/chef_zero/endpoints/nodes_endpoint.rb
+++ b/lib/chef_zero/endpoints/nodes_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "rest_object_endpoint"
 require_relative "../chef_data/data_normalizer"
 
diff --git a/lib/chef_zero/endpoints/not_found_endpoint.rb b/lib/chef_zero/endpoints/not_found_endpoint.rb
index 160d4a2..2fd4e60 100644
--- a/lib/chef_zero/endpoints/not_found_endpoint.rb
+++ b/lib/chef_zero/endpoints/not_found_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 
 module ChefZero
   module Endpoints
diff --git a/lib/chef_zero/endpoints/organization_association_request_endpoint.rb b/lib/chef_zero/endpoints/organization_association_request_endpoint.rb
index 6243a6c..d4e0dac 100644
--- a/lib/chef_zero/endpoints/organization_association_request_endpoint.rb
+++ b/lib/chef_zero/endpoints/organization_association_request_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "../rest_base"
 
 module ChefZero
diff --git a/lib/chef_zero/endpoints/organization_association_requests_endpoint.rb b/lib/chef_zero/endpoints/organization_association_requests_endpoint.rb
index d16a8b7..4b4b8cf 100644
--- a/lib/chef_zero/endpoints/organization_association_requests_endpoint.rb
+++ b/lib/chef_zero/endpoints/organization_association_requests_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "../rest_base"
 
 module ChefZero
diff --git a/lib/chef_zero/endpoints/organization_authenticate_user_endpoint.rb b/lib/chef_zero/endpoints/organization_authenticate_user_endpoint.rb
index ba8e13a..51f05cf 100644
--- a/lib/chef_zero/endpoints/organization_authenticate_user_endpoint.rb
+++ b/lib/chef_zero/endpoints/organization_authenticate_user_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "../rest_base"
 
 module ChefZero
diff --git a/lib/chef_zero/endpoints/organization_endpoint.rb b/lib/chef_zero/endpoints/organization_endpoint.rb
index a7f190d..7f536d6 100644
--- a/lib/chef_zero/endpoints/organization_endpoint.rb
+++ b/lib/chef_zero/endpoints/organization_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "../rest_base"
 
 module ChefZero
diff --git a/lib/chef_zero/endpoints/organization_user_base.rb b/lib/chef_zero/endpoints/organization_user_base.rb
index 8b806c1..eed5c6e 100644
--- a/lib/chef_zero/endpoints/organization_user_base.rb
+++ b/lib/chef_zero/endpoints/organization_user_base.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "../rest_base"
 
 module ChefZero
diff --git a/lib/chef_zero/endpoints/organization_user_endpoint.rb b/lib/chef_zero/endpoints/organization_user_endpoint.rb
index f29bdce..75f82e7 100644
--- a/lib/chef_zero/endpoints/organization_user_endpoint.rb
+++ b/lib/chef_zero/endpoints/organization_user_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "../rest_base"
 
 module ChefZero
diff --git a/lib/chef_zero/endpoints/organization_users_endpoint.rb b/lib/chef_zero/endpoints/organization_users_endpoint.rb
index 7a26fa1..e77c6ba 100644
--- a/lib/chef_zero/endpoints/organization_users_endpoint.rb
+++ b/lib/chef_zero/endpoints/organization_users_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "../rest_base"
 require_relative "organization_user_base"
 
diff --git a/lib/chef_zero/endpoints/organization_validator_key_endpoint.rb b/lib/chef_zero/endpoints/organization_validator_key_endpoint.rb
index 11e535a..49fcd54 100644
--- a/lib/chef_zero/endpoints/organization_validator_key_endpoint.rb
+++ b/lib/chef_zero/endpoints/organization_validator_key_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "../rest_base"
 require "uuidtools"
 
diff --git a/lib/chef_zero/endpoints/organizations_endpoint.rb b/lib/chef_zero/endpoints/organizations_endpoint.rb
index aa5c8e2..84e9388 100644
--- a/lib/chef_zero/endpoints/organizations_endpoint.rb
+++ b/lib/chef_zero/endpoints/organizations_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "../rest_base"
 require "uuidtools"
 
diff --git a/lib/chef_zero/endpoints/policy_group_endpoint.rb b/lib/chef_zero/endpoints/policy_group_endpoint.rb
index 5e4c2f5..371cfea 100644
--- a/lib/chef_zero/endpoints/policy_group_endpoint.rb
+++ b/lib/chef_zero/endpoints/policy_group_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "../rest_base"
 require_relative "../chef_data/data_normalizer"
 
diff --git a/lib/chef_zero/endpoints/policy_group_policy_endpoint.rb b/lib/chef_zero/endpoints/policy_group_policy_endpoint.rb
index 401de58..8d1169a 100644
--- a/lib/chef_zero/endpoints/policy_group_policy_endpoint.rb
+++ b/lib/chef_zero/endpoints/policy_group_policy_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "../rest_base"
 require_relative "../chef_data/data_normalizer"
 
diff --git a/lib/chef_zero/endpoints/policy_groups_endpoint.rb b/lib/chef_zero/endpoints/policy_groups_endpoint.rb
index c22bf34..14a647b 100644
--- a/lib/chef_zero/endpoints/policy_groups_endpoint.rb
+++ b/lib/chef_zero/endpoints/policy_groups_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "../rest_base"
 require_relative "../chef_data/data_normalizer"
 
diff --git a/lib/chef_zero/endpoints/principal_endpoint.rb b/lib/chef_zero/endpoints/principal_endpoint.rb
index b59a0c9..53f45e0 100644
--- a/lib/chef_zero/endpoints/principal_endpoint.rb
+++ b/lib/chef_zero/endpoints/principal_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "../../chef_zero"
 require_relative "../rest_base"
 
diff --git a/lib/chef_zero/endpoints/rest_list_endpoint.rb b/lib/chef_zero/endpoints/rest_list_endpoint.rb
index c410e54..9f51190 100644
--- a/lib/chef_zero/endpoints/rest_list_endpoint.rb
+++ b/lib/chef_zero/endpoints/rest_list_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "../rest_base"
 
 module ChefZero
diff --git a/lib/chef_zero/endpoints/rest_object_endpoint.rb b/lib/chef_zero/endpoints/rest_object_endpoint.rb
index 22c9ee6..c89268d 100644
--- a/lib/chef_zero/endpoints/rest_object_endpoint.rb
+++ b/lib/chef_zero/endpoints/rest_object_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "../rest_base"
 require_relative "../rest_error_response"
 
diff --git a/lib/chef_zero/endpoints/role_endpoint.rb b/lib/chef_zero/endpoints/role_endpoint.rb
index acef570..ccaa26f 100644
--- a/lib/chef_zero/endpoints/role_endpoint.rb
+++ b/lib/chef_zero/endpoints/role_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "rest_object_endpoint"
 require_relative "../chef_data/data_normalizer"
 
diff --git a/lib/chef_zero/endpoints/role_environments_endpoint.rb b/lib/chef_zero/endpoints/role_environments_endpoint.rb
index 15712d9..80c650a 100644
--- a/lib/chef_zero/endpoints/role_environments_endpoint.rb
+++ b/lib/chef_zero/endpoints/role_environments_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "../rest_base"
 
 module ChefZero
diff --git a/lib/chef_zero/endpoints/sandbox_endpoint.rb b/lib/chef_zero/endpoints/sandbox_endpoint.rb
index 78d0f4b..1ba5663 100644
--- a/lib/chef_zero/endpoints/sandbox_endpoint.rb
+++ b/lib/chef_zero/endpoints/sandbox_endpoint.rb
@@ -1,6 +1,6 @@
 require_relative "../rest_base"
 require_relative "../rest_error_response"
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 
 module ChefZero
   module Endpoints
diff --git a/lib/chef_zero/endpoints/sandboxes_endpoint.rb b/lib/chef_zero/endpoints/sandboxes_endpoint.rb
index 258344b..3eacfa5 100644
--- a/lib/chef_zero/endpoints/sandboxes_endpoint.rb
+++ b/lib/chef_zero/endpoints/sandboxes_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "../rest_base"
 
 module ChefZero
diff --git a/lib/chef_zero/endpoints/search_endpoint.rb b/lib/chef_zero/endpoints/search_endpoint.rb
index 935da3d..91085ed 100644
--- a/lib/chef_zero/endpoints/search_endpoint.rb
+++ b/lib/chef_zero/endpoints/search_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "rest_object_endpoint"
 require_relative "../chef_data/data_normalizer"
 require_relative "../rest_error_response"
diff --git a/lib/chef_zero/endpoints/system_recovery_endpoint.rb b/lib/chef_zero/endpoints/system_recovery_endpoint.rb
index 8cf838a..7ca48ee 100644
--- a/lib/chef_zero/endpoints/system_recovery_endpoint.rb
+++ b/lib/chef_zero/endpoints/system_recovery_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "../rest_base"
 
 module ChefZero
diff --git a/lib/chef_zero/endpoints/universe_endpoint.rb b/lib/chef_zero/endpoints/universe_endpoint.rb
index dc34bfe..27eb3c8 100644
--- a/lib/chef_zero/endpoints/universe_endpoint.rb
+++ b/lib/chef_zero/endpoints/universe_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "rest_object_endpoint"
 require_relative "../chef_data/data_normalizer"
 
diff --git a/lib/chef_zero/endpoints/user_association_request_endpoint.rb b/lib/chef_zero/endpoints/user_association_request_endpoint.rb
index 4873722..9da680a 100644
--- a/lib/chef_zero/endpoints/user_association_request_endpoint.rb
+++ b/lib/chef_zero/endpoints/user_association_request_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "../rest_base"
 
 module ChefZero
diff --git a/lib/chef_zero/endpoints/user_association_requests_count_endpoint.rb b/lib/chef_zero/endpoints/user_association_requests_count_endpoint.rb
index ff809e3..5135bc1 100644
--- a/lib/chef_zero/endpoints/user_association_requests_count_endpoint.rb
+++ b/lib/chef_zero/endpoints/user_association_requests_count_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "../rest_base"
 
 module ChefZero
diff --git a/lib/chef_zero/endpoints/user_association_requests_endpoint.rb b/lib/chef_zero/endpoints/user_association_requests_endpoint.rb
index 114296c..4bd103c 100644
--- a/lib/chef_zero/endpoints/user_association_requests_endpoint.rb
+++ b/lib/chef_zero/endpoints/user_association_requests_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "../rest_base"
 
 module ChefZero
diff --git a/lib/chef_zero/endpoints/user_organizations_endpoint.rb b/lib/chef_zero/endpoints/user_organizations_endpoint.rb
index 505a504..c70e0cd 100644
--- a/lib/chef_zero/endpoints/user_organizations_endpoint.rb
+++ b/lib/chef_zero/endpoints/user_organizations_endpoint.rb
@@ -1,4 +1,4 @@
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "../rest_base"
 
 module ChefZero
diff --git a/lib/chef_zero/rest_router.rb b/lib/chef_zero/rest_router.rb
index dc24bb3..5f00416 100644
--- a/lib/chef_zero/rest_router.rb
+++ b/lib/chef_zero/rest_router.rb
@@ -1,4 +1,4 @@
-require "pp"
+require "pp" unless defined?(PP)
 
 module ChefZero
   class RestRouter
diff --git a/lib/chef_zero/rspec.rb b/lib/chef_zero/rspec.rb
index 63cbecf..9bb15ca 100644
--- a/lib/chef_zero/rspec.rb
+++ b/lib/chef_zero/rspec.rb
@@ -1,4 +1,4 @@
-require "tempfile"
+require "tempfile" unless defined?(Tempfile)
 require_relative "server"
 require_relative "rest_request"
 
diff --git a/lib/chef_zero/server.rb b/lib/chef_zero/server.rb
index 89a320b..2d699aa 100644
--- a/lib/chef_zero/server.rb
+++ b/lib/chef_zero/server.rb
@@ -16,14 +16,14 @@
 # limitations under the License.
 #
 
-require "openssl"
+require "openssl" unless defined?(OpenSSL)
 require "open-uri"
-require "rubygems"
-require "timeout"
-require "stringio"
+require "rubygems" unless defined?(Gem)
+require "timeout" unless defined?(Timeout)
+require "stringio" unless defined?(StringIO)
 
-require "rack"
-require "webrick"
+require "rack" unless defined?(Rack)
+require "webrick" unless defined?(WEBrick)
 require "webrick/https"
 
 require_relative "../chef_zero"
diff --git a/lib/chef_zero/socketless_server_map.rb b/lib/chef_zero/socketless_server_map.rb
index c7a208e..53ca476 100644
--- a/lib/chef_zero/socketless_server_map.rb
+++ b/lib/chef_zero/socketless_server_map.rb
@@ -17,7 +17,7 @@
 #
 
 require "thread"
-require "singleton"
+require "singleton" unless defined?(Singleton)
 require_relative "dist"
 
 module ChefZero