Adding a bunch of tests

spec/helpers/application_helper_spec.rb

@@ -0,0 +1,37 @@
+require 'rails_helper'
+
+RSpec.describe ApplicationHelper, type: :helper do
+  let(:local_domain) { 'local.tld' }
+
+  before do
+    stub_const('LOCAL_DOMAIN', local_domain)
+  end
+
+  describe '#unique_tag' do
+    it 'returns a string' do
+      expect(helper.unique_tag(Time.now, 12, 'Status')).to be_a String
+    end
+  end
+
+  describe '#unique_tag_to_local_id' do
+    it 'returns the ID part' do
+      expect(helper.unique_tag_to_local_id("tag:#{local_domain};objectId=12:objectType=Status", 'Status')).to eql '12'
+    end
+  end
+
+  describe '#local_id?' do
+    it 'returns true for a local ID' do
+      expect(helper.local_id?("tag:#{local_domain};objectId=12:objectType=Status")).to be true
+    end
+
+    it 'returns false for a foreign ID' do
+      expect(helper.local_id?('tag:foreign.tld;objectId=12:objectType=Status')).to be false
+    end
+  end
+
+  describe '#add_base_url_prefix' do
+    it 'returns full API URL from base to suffix' do
+      expect(helper.add_base_url_prefix('test')).to eql "#{root_url}api/test"
+    end
+  end
+end