Project: RSpec Rails 2.4

Publisher: RSpec

helper spec

Helper specs live in spec/helpers, or any example group with :type => :helper. In order to access the helper methods you can call them on the
helper object.

Scenarios

helper method that returns true
helper method that accesses an instance variable
application helper is included in helper object

helper method that returns true

Given

a file named "spec/helpers/application_helper_spec.rb" with:

require "spec_helper"

describe ApplicationHelper do
  describe "#page_title" do
    it "returns true" do
      helper.page_title.should be_true
    end
  end
end

And

a file named "app/helpers/application_helper.rb" with:

module ApplicationHelper
  def page_title
    true
  end
end

When

I run "rspec spec/helpers/application_helper_spec.rb"

Then

the examples should all pass

helper method that accesses an instance variable

Given

a file named "spec/helpers/application_helper_spec.rb" with:

require "spec_helper"

describe ApplicationHelper do
  describe "#page_title" do
    it "returns the instance variable" do
      assign(:title, "My Title")
      helper.page_title.should eql("My Title")
    end
  end
end

And

a file named "app/helpers/application_helper.rb" with:

module ApplicationHelper
  def page_title
    @title || nil
  end
end

When

I run "rspec spec/helpers/application_helper_spec.rb"

Then

the examples should all pass

application helper is included in helper object

Given

a file named "spec/helpers/widgets_helper_spec.rb" with:

require "spec_helper"

describe WidgetsHelper do
  describe "#page_title" do
    it "includes the app name" do
      assign(:title, "This Page")
      helper.page_title.should eq("The App: This Page")
    end
  end
end

And

a file named "app/helpers/application_helper.rb" with:

module ApplicationHelper
  def app_name
    "The App"
  end
end

And

a file named "app/helpers/widgets_helper.rb" with:

module WidgetsHelper
  def page_title
    "#{app_name}: #{@title}"
  end
end

When

I run "rspec spec/helpers/widgets_helper_spec.rb"

Then

the examples should all pass

Last published over 5 years ago by dchelimsky.

helper spec

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