Merge pull request #1363 from puppetlabs/CONT-1023-review-comments

(CONT-1023) - Moving nested_values function under stdlib namespace

functions/deferrable_epp.pp

@@ -6,7 +6,7 @@
 # have to explicitly pass the entire scope to the client.
 #
 function stdlib::deferrable_epp(String $template, Hash $variables) >> Variant[String, Sensitive[String], Deferred] {
-  if $variables.nested_values.any |$value| { $value.is_a(Deferred) } {
+  if $variables.stdlib::nested_values.any |$value| { $value.is_a(Deferred) } {
     Deferred(
       'inline_epp',
       [find_template($template).file, $variables],

lib/puppet/functions/stdlib/nested_values.rb

@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+# @summary Get list of nested values from given hash
+#   This function will return list of nested Hash values and returns list of values in form of Array
+#
+# @example Example Usage:
+#   $hash = {
+#     "key1" => "value1",
+#     "key2" => { "key2.1" => "value2.1"},
+#     "key3" => "value3"
+#   }
+#   $data = $hash.stdlib::nested_values
+#   #Output : ["value1", "value2.1", "value3"]
+Puppet::Functions.create_function(:'stdlib::nested_values') do
+  # @param hash A (nested) hash
+  # @return All the values found in the input hash included those deeply nested.
+  dispatch :nested_values do
+    param 'Hash', :hash
+    return_type 'Array'
+  end
+
+  def nested_values(hash)
+    hash.each_with_object([]) do |(_k, v), values|
+      v.is_a?(Hash) ? values.concat(nested_values(v)) : (values << v)
+    end
+  end
+end

spec/functions/nested_values_spec.rb

@@ -2,10 +2,7 @@
 
 require 'spec_helper'
 
-describe 'nested_values' do
-  # please note that these tests are examples only
-  # you will need to replace the params and return value
-  # with your expectations
+describe 'stdlib::nested_values' do
   it { is_expected.to run.with_params({}).and_return([]) }
   it { is_expected.to run.with_params({ 'key' => 'value' }).and_return(['value']) }
   it { is_expected.to run.with_params({ 'key' => { 'key1' => 'value1', 'key2' => 'value2' } }).and_return(['value1', 'value2']) }