```ruby
require 'spec_helper'

describe "validation/_message.html.erb" do

  it "displays errors and warnings correctly" do
    
    {
      :encoding => "Your CSV appears to be encoded in <code>iso-8859-1</code>. We recommend you use <code>UTF-8</code>.",
      :no_encoding => "The encoding of your CSV file is not being declared in the HTTP response.",
      :invalid_encoding => "Your CSV appears to be encoded in <code>iso-8859-1</code>, but invalid characters were found",
      :wrong_content_type => "Your CSV file is being delivered with an incorrect <code>Content-Type</code>",
      :no_content_type => "Your CSV file is being delivered without a <code>Content-Type</code> header"
    }.each do |k, v|
      
      message = Csvlint::ErrorMessage.new(:type => k)
      validator = double("validator")
      validator.stub(:encoding) { "iso-8859-1" }
      validator.stub(:content_type) { "text/plain" }
      validator.stub(:extension) { ".csv" }
      validator.stub(:headers) { {"content-type" => "text/plain"} }
        
      validator 
      render :partial => "validation/message", :locals => { :message => message, :validator => validator }
      
      rendered.should include v
    end
    
  end

end
```

Test line break error display
user
```ruby
require 'spec_helper'

describe "validation/_message.html.erb" do

  it "displays errors and warnings correctly" do
    
    {
      :encoding => "Your CSV appears to be encoded in <code>iso-8859-1</code>. We recommend you use <code>UTF-8</code>.",
      :no_encoding => "The encoding of your CSV file is not being declared in the HTTP response.",
      :invalid_encoding => "Your CSV appears to be encoded in <code>iso-8859-1</code>, but invalid characters were found",
      :wrong_content_type => "Your CSV file is being delivered with an incorrect <code>Content-Type</code>",
      :no_content_type => "Your CSV file is being delivered without a <code>Content-Type</code> header",
      :nonrfc_line_breaks => "Your CSV appears to use <code>LF</code> line-breaks"
    }.each do |k, v|
      
      message = Csvlint::ErrorMessage.new(:type => k)
      validator = double("validator")
      validator.stub(:encoding) { "iso-8859-1" }
      validator.stub(:content_type) { "text/plain" }
      validator.stub(:extension) { ".csv" }
      validator.stub(:headers) { {"content-type" => "text/plain"} }
      validator.stub(:line_breaks) { "\n" }
        
      validator 
      render :partial => "validation/message", :locals => { :message => message, :validator => validator }
      
      rendered.should include v
    end
    
  end

end
```
assistant