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POWhy do I get an ArgumentError when making RSpec assertions?
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  1. POWhy do I get an ArgumentError when making RSpec assertions?
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    copied!<p>I'm trying to do something like this:</p> <pre><code>describe 'hi' do it 'should render the home page' do visit '/' page.driver.response.status.should eql 200 page.driver.response.content_type.should eql 'text/html' doc = Nokogiri::HTML(page.driver.response.body) div = doc.css('div#nav') div.length.should_not eql 0 end end </code></pre> <p>Everything works as expected without this line:</p> <pre><code>div.length.should_not eql 0 </code></pre> <p>With that line present, I get this error:</p> <pre><code>&lt;main&gt;:659:in `method_missing': wrong number of arguments (1 for 2) (ArgumentError) from /Users/Work/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.7.1/lib/rspec/core/metadata.rb:78:in `flatten' from /Users/Work/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.7.1/lib/rspec/core/metadata.rb:78:in `full_description_for' from /Users/Work/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.7.1/lib/rspec/core/metadata.rb:23:in `[]' from /Users/Work/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.7.1/lib/rspec/core/metadata.rb:51:in `full_description_for' from /Users/Work/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.7.1/lib/rspec/core/metadata.rb:23:in `[]' from /Users/Work/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.7.1/lib/rspec/core/example.rb:13:in `block (2 levels) in delegate_to_metadata' from /Users/Work/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.7.1/lib/rspec/core/formatters/base_text_formatter.rb:164:in `dump_failure' from /Users/Work/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.7.1/lib/rspec/core/formatters/base_text_formatter.rb:19:in `block in dump_failures' from /Users/Work/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.7.1/lib/rspec/core/formatters/base_text_formatter.rb:17:in `each' from /Users/Work/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.7.1/lib/rspec/core/formatters/base_text_formatter.rb:17:in `each_with_index' from /Users/Work/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.7.1/lib/rspec/core/formatters/base_text_formatter.rb:17:in `dump_failures' from /Users/Work/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.7.1/lib/rspec/core/reporter.rb:74:in `block in notify' from /Users/Work/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.7.1/lib/rspec/core/reporter.rb:73:in `each' from /Users/Work/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.7.1/lib/rspec/core/reporter.rb:73:in `notify' from /Users/Work/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.7.1/lib/rspec/core/reporter.rb:23:in `finish' from /Users/Work/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.7.1/lib/rspec/core/reporter.rb:14:in `report' from /Users/Work/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.7.1/lib/rspec/core/command_line.rb:21:in `run' from /Users/Work/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.7.1/lib/rspec/core/runner.rb:80:in `run_in_process' from /Users/Work/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.7.1/lib/rspec/core/runner.rb:69:in `run' from /Users/Work/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.7.1/lib/rspec/core/runner.rb:10:in `block in autorun' </code></pre> <p>This is really weird - div.length is a fixnum. This seems like a pretty basic assertion, I don't understand what I could be doing wrong here. Anyone got any pointers?</p> <p>I'm using RSpec 2.7.1, with RSpec-expectations 2.7.0. I have Ruby 1.9.2p290.</p> <p>Edit: A quick note - I'm requiring RSpec via Capybara.</p>
 

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