Add utility class to hold object_is_any_of?

Author: kpaulisse

lib/octocatalog-diff/util/util.rb

@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+# Handy methods that are not tied to one particular class
+
+module OctocatalogDiff
+  module Util
+    # Helper class to construct catalogs, performing all necessary steps such as
+    # bootstrapping directories, installing facts, and running puppet.
+    class Util
+      # Utility Method!
+      # `is_a?(class)` only allows one method, but this uses an array
+      # @param object [?] Object to consider
+      # @param classes [Array] Classes to determine if object is a member of
+      # @return [Boolean] True if object is_a any of the classes, false otherwise
+      def self.object_is_any_of?(object, classes)
+        classes.each { |clazz| return true if object.is_a? clazz }
+        false
+      end
+    end
+  end
+end

spec/octocatalog-diff/tests/util/util_spec.rb

@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+require_relative '../spec_helper'
+require 'ostruct'
+require OctocatalogDiff::Spec.require_path('/util/util')
+
+describe OctocatalogDiff::Util::Util do
+  describe '#object_is_any_of?' do
+    it 'should return true when object is one of the classes' do
+      object = 42
+      classes = [Fixnum, Integer]
+      expect(described_class.object_is_any_of?(object, classes)).to eq(true)
+    end
+
+    it 'should return false when object is not one of the classes' do
+      object = :chickens
+      classes = [Fixnum, Integer]
+      expect(described_class.object_is_any_of?(object, classes)).to eq(false)
+    end
+  end
+end