Add helper specs

Author: gregawoods

.gitignore

@@ -5,3 +5,4 @@ spec/dummy/db/*.sqlite3
 spec/dummy/db/*.sqlite3-journal
 spec/dummy/log/*.log
 spec/dummy/tmp/
+coverage

bin/rake

@@ -0,0 +1,17 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+#
+# This file was generated by Bundler.
+#
+# The application 'rake' is installed as part of a gem, and
+# this file is here to facilitate running it.
+#
+
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+  Pathname.new(__FILE__).realpath)
+
+require "rubygems"
+require "bundler/setup"
+
+load Gem.bin_path("rake", "rake")

spec/dummy/app/models/user.rb

@@ -0,0 +1,3 @@
+class User < ApplicationRecord
+  attr_accessor :first_name, :last_name, :email
+end

spec/dummy/config/routes.rb

@@ -1,3 +1,3 @@
 Rails.application.routes.draw do
-  # For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html
+  resources :users
 end

spec/helpers/sortable_by/table_helper_spec.rb

@@ -1,7 +1,37 @@
 require 'rails_helper'
 
 describe SortableBy::TableHelper, type: :helper do
-  describe '#sortable_table_header' do
-    it 'generates an html table header'
+  it 'returns a table header with rows' do
+    result = helper.sortable_table_header(:users_path)
+    expect(result).to include('<thead class="tb-table-header"><tr></tr></thead>')
+    expect(result).to include('</thead>')
   end
+
+  it 'has some headers' do
+    result = helper.sortable_table_header(:users_path, model: User) do |t|
+      view.concat(t.header(:first_name))
+      view.concat(t.header(:email))
+    end
+    expect(result).to include('<th>First name</th>')
+    expect(result).to include('<th>Email</th>')
+  end
+
+  it 'generates links' do
+    result = helper.sortable_table_header(:users_path, model: User) do |t|
+      view.concat(t.sortable(:first_name))
+      view.concat(t.sortable(:email))
+    end
+    expect(result).to include('<a href="/users?dir=asc&amp;sort=first_name">First name</a>')
+    expect(result).to include('<a href="/users?dir=asc&amp;sort=email">Email</a>')
+  end
+
+  it 'sets the active class' do
+    helper.params[:sort] = 'first_name'
+    helper.params[:dir] = 'desc'
+    result = helper.sortable_table_header(:users_path, model: User) do |t|
+      view.concat(t.sortable(:first_name))
+    end
+    expect(result).to include('<th class="sortable sortable-active sortable-desc">')
+  end
+
 end

spec/rails_helper.rb

@@ -1,3 +1,6 @@
+require 'simplecov'
+SimpleCov.start 'rails'
+
 # This file is copied to spec/ when you run 'rails generate rspec:install'
 require 'spec_helper'
 ENV['RAILS_ENV'] ||= 'test'