(PDOC-126) Add spec test for util module and scrub_string method

spec/unit/puppet-strings/yard/util_spec.rb

@@ -0,0 +1,31 @@
+require 'spec_helper'
+require 'puppet-strings/yard'
+
+describe PuppetStrings::Yard::Util do
+  subject {PuppetStrings::Yard::Util}
+
+  describe 'scrub_string' do
+    it 'should remove `%Q` and its brackets from a string ' do
+      str = "%Q{this is a test string}"
+      expect(subject.scrub_string(str)).to eq('this is a test string')
+    end
+
+    it 'should remove `%q` and its brackets from a string' do
+      str = "%q{this is a test string}"
+      expect(subject.scrub_string(str)).to eq('this is a test string')
+    end
+
+    it 'should not affect newlines when %Q notation is used' do
+      str = <<-STR
+%Q{this is
+a test string}
+STR
+      expect(subject.scrub_string(str)).to eq("this is\na test string")
+    end
+
+    it 'should not affect a string which does not use %Q notation' do
+      str = "this is a test string"
+      expect(subject.scrub_string(str)).to eq('this is a test string')
+    end
+  end
+end