template_spec.rb

describe Template do
  it "pulls out parameters from the template body" do
    template = Template.new("Look at my template with {Adjective} many {Noun}!")
    template.parameters.should == ["Adjective", "Noun"]

    message = Message.new(template)
    message.parameters.should == {
      "Adjective" => nil,
      "Noun" => nil
    }

    message.parameters["Adjective"] = "extremely"
    message.parameters["Noun"] = "parts"

    message.to_s.should == "Look at my template with extremely many parts!"
  end
end

describe TemplateHelper do
  it "builds a form with a field for each parameter" do
    include TemplateHelper

    message = Message.new
    message.parameters = {
      "MyParam" => "My Initial Value",
      "OtherParam" => "My Initial Value Too"
    }

    form = template_form_for(@message, "url", :method => :post)

    form.should == '
    <form action="url" method="post">
      <label>MyParam</label><input type="text" name="message[MyParam]" value="My Initial Value"/>
      <label>OtherParam</label><input type="text" name="message[OtherParam]" value="My Initial Value Too"/>
    </form>
    '
  end
end