RubyonRailsチュートリアル第３章のテスト

Question

ただいまRuby on Rails Tutorialの第3章の学習しています。
チュートリアルの中で
リスト 3.16: red
$ rails test
3 tests, 2 assertions, 0 failures, 1 errors, 0 skips
というような表記があるのですが
自分がテストを行うと長い文になります。
sample_app (static-pages) $ rails t
Running via Spring preloader in process 5299
Run options: --seed 3123

Running:

Run options: --seed 3123

Running:

EE

Error:
StaticPagesControllerTest#test_should_get_about:
NameError: undefined local variable or method static_pages_about_url' for #<StaticPagesControllerTest:0x00000004363f18> test/controllers/static_pages_controller_test.rb:15:in block in class:StaticPagesControllerTest'

/usr/local/rvm/gems/ruby-2.4.1/gems/railties-5.1.4/lib/rails/test_unit/reporter.rb:70:in method': undefined method test_should_get_about' for class Minitest::Result' (NameError) from /usr/local/rvm/gems/ruby-2.4.1/gems/railties-5.1.4/lib/rails/test_unit/reporter.rb:70:in format_rerun_snippet'
from /usr/local/rvm/gems/ruby-2.4.1/gems/railties-5.1.4/lib/rails/test_unit/reporter.rb:23:in record' from /usr/local/rvm/gems/ruby-2.4.1/gems/minitest-5.11.3/lib/minitest.rb:803:in block in record'
from /usr/local/rvm/gems/ruby-2.4.1/gems/minitest-5.11.3/lib/minitest.rb:802:in each' from /usr/local/rvm/gems/ruby-2.4.1/gems/minitest-5.11.3/lib/minitest.rb:802:in record'
from /usr/local/rvm/gems/ruby-2.4.1/gems/minitest-5.11.3/lib/minitest.rb:334:in run_one_method' from /usr/local/rvm/gems/ruby-2.4.1/gems/minitest-5.11.3/lib/minitest.rb:321:in block (2 levels) in run'
from /usr/local/rvm/gems/ruby-2.4.1/gems/minitest-5.11.3/lib/minitest.rb:320:in each' from /usr/local/rvm/gems/ruby-2.4.1/gems/minitest-5.11.3/lib/minitest.rb:320:in block in run'
from /usr/local/rvm/gems/ruby-2.4.1/gems/minitest-5.11.3/lib/minitest.rb:360:in on_signal' from /usr/local/rvm/gems/ruby-2.4.1/gems/minitest-5.11.3/lib/minitest.rb:347:in with_info_handler'
from /usr/local/rvm/gems/ruby-2.4.1/gems/minitest-5.11.3/lib/minitest.rb:319:in run' from /usr/local/rvm/gems/ruby-2.4.1/gems/railties-5.1.4/lib/rails/test_unit/line_filtering.rb:9:in run'
from /usr/local/rvm/gems/ruby-2.4.1/gems/minitest-5.11.3/lib/minitest.rb:159:in block in __run' from /usr/local/rvm/gems/ruby-2.4.1/gems/minitest-5.11.3/lib/minitest.rb:159:in map'
from /usr/local/rvm/gems/ruby-2.4.1/gems/minitest-5.11.3/lib/minitest.rb:159:in __run' from /usr/local/rvm/gems/ruby-2.4.1/gems/minitest-5.11.3/lib/minitest.rb:136:in run'
from /usr/local/rvm/gems/ruby-2.4.1/gems/minitest-5.11.3/lib/minitest.rb:63:in block in autorun' from /usr/local/rvm/gems/ruby-2.4.1/gems/spring-2.0.2/lib/spring/application.rb:171:in fork'
from /usr/local/rvm/gems/ruby-2.4.1/gems/spring-2.0.2/lib/spring/application.rb:171:in serve' from /usr/local/rvm/gems/ruby-2.4.1/gems/spring-2.0.2/lib/spring/application.rb:141:in block in run'
from /usr/local/rvm/gems/ruby-2.4.1/gems/spring-2.0.2/lib/spring/application.rb:135:in loop' from /usr/local/rvm/gems/ruby-2.4.1/gems/spring-2.0.2/lib/spring/application.rb:135:in run'
from /usr/local/rvm/gems/ruby-2.4.1/gems/spring-2.0.2/lib/spring/application/boot.rb:19:in <top (required)>' from /usr/local/rvm/rubies/ruby-2.4.1/lib/ruby/site_ruby/2.4.0/rubygems/core_ext/kernel_require.rb:55:in require'
from /usr/local/rvm/rubies/ruby-2.4.1/lib/ruby/site_ruby/2.4.0/rubygems/core_ext/kernel_require.rb:55:in require' from -e:1:in <main>'

なぜこのような長い文になってしまうのわからないので理解するべく質問しました。
何が原因で長い文になっているのか、そしてチュートリアルに載っているような短い状態にするにはどうすれば良いのか回答かヒントをいただけたらと思います。

よろしくおねがいします。

Answer 1

エラー文で検索してみた結果、インストールできていないものがありそれで下に長い文ができていたようです。
vimに関係するgem?だったようで関係はないのですがインストールしたら改善されました。