Adds a test for the purl helper method

This was mainly done to make sure the `simplecov` configuration was working correctly.

Signed-off-by: M. Scott Ford <[email protected]>

Author: mscottford

spec/bom_helpers_spec.rb

@@ -0,0 +1,10 @@
+require 'spec_helper'
+require 'bom_helpers'
+
+RSpec.describe 'helper methods' do
+  context '#purl' do
+    it 'builds a purl' do
+      expect(purl('activesupport', '7.0.1')).to eq("pkg:gem/[email protected]")
+    end
+  end
+end

spec/spec_helper.rb

@@ -0,0 +1,16 @@
+# Copied from https://github.com/cucumber/aruba/blob/3b1a6cea6e3ba55370c3396eef0a955aeb40f287/spec/spec_helper.rb
+# Licensed under MIT - https://github.com/cucumber/aruba/blob/3b1a6cea6e3ba55370c3396eef0a955aeb40f287/LICENSE
+
+$LOAD_PATH << File.expand_path('../lib', __dir__)
+
+unless RUBY_PLATFORM.include?('java')
+  require 'simplecov'
+  SimpleCov.command_name 'RSpec'
+
+  # Run simplecov by default
+  SimpleCov.start unless ENV.key? 'ARUBA_NO_COVERAGE'
+end
+
+# Loading support files
+Dir.glob(File.expand_path('support/*.rb', __dir__)).sort.each { |f| require_relative f }
+Dir.glob(File.expand_path('support/**/*.rb', __dir__)).sort.each { |f| require_relative f }