Getting errors when using rspec - ruby-on-rails

Question

I'm doing a tutorial on rspec and keep getting errors whenever I try to perform rake tests or run rspec manually through the terminal. Here's what I get:
mes-mbp:00_hello Me$ ls
hello.rb hello_spec.rb index.html
mes-mbp:00_hello Me$ rspec 00_hello/hello_spec.rb
/Users/Me/.rvm/rubies/ruby-2.2.0/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require': cannot load such file -- spec_helper (LoadError)
from /Users/Me/.rvm/rubies/ruby-2.2.0/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
from /Users/Me/.rvm/gems/ruby-2.2.0/gems/rspec-core-3.2.3/lib/rspec/core/configuration.rb:1181:in `block in requires='
from /Users/Me/.rvm/gems/ruby-2.2.0/gems/rspec-core-3.2.3/lib/rspec/core/configuration.rb:1181:in `each'
from /Users/Me/.rvm/gems/ruby-2.2.0/gems/rspec-core-3.2.3/lib/rspec/core/configuration.rb:1181:in `requires='
from /Users/Me/.rvm/gems/ruby-2.2.0/gems/rspec-core-3.2.3/lib/rspec/core/configuration_options.rb:110:in `block in process_options_into'
from /Users/Me/.rvm/gems/ruby-2.2.0/gems/rspec-core-3.2.3/lib/rspec/core/configuration_options.rb:109:in `each'
from /Users/Me/.rvm/gems/ruby-2.2.0/gems/rspec-core-3.2.3/lib/rspec/core/configuration_options.rb:109:in `process_options_into'
from /Users/Me/.rvm/gems/ruby-2.2.0/gems/rspec-core-3.2.3/lib/rspec/core/configuration_options.rb:22:in `configure'
from /Users/Me/.rvm/gems/ruby-2.2.0/gems/rspec-core-3.2.3/lib/rspec/core/runner.rb:96:in `setup'
from /Users/Me/.rvm/gems/ruby-2.2.0/gems/rspec-core-3.2.3/lib/rspec/core/runner.rb:85:in `run'
from /Users/Me/.rvm/gems/ruby-2.2.0/gems/rspec-core-3.2.3/lib/rspec/core/runner.rb:70:in `run'
from /Users/Me/.rvm/gems/ruby-2.2.0/gems/rspec-core-3.2.3/lib/rspec/core/runner.rb:38:in `invoke'
from /Users/Me/.rvm/gems/ruby-2.2.0/gems/rspec-core-3.2.3/exe/rspec:4:in `<top (required)>'
from /Users/Me/.rvm/gems/ruby-2.2.0/bin/rspec:23:in `load'
from /Users/Me/.rvm/gems/ruby-2.2.0/bin/rspec:23:in `<main>'
from /Users/Me/.rvm/gems/ruby-2.2.0/bin/ruby_executable_hooks:15:in `eval'
from /Users/Me/.rvm/gems/ruby-2.2.0/bin/ruby_executable_hooks:15:in `<main>'
Can anyone tell me what I'm doing wrong?
Edit: More information on what I'm doing as requested:
I'm following along with this tutorial. In the code above I'm trying to run tests on the hello.rb file that are in the hello_spec.rb file which has the 'require hello' code in it.

Answer 1

You are giving RSpec the wrong path to your spec file.
The current working directory is 00_hello.
mes-mbp:00_hello Me$ rspec 00_hello/hello_spec.rb
Will cause RSpec to look for 00_hello\00_hello\hello_spec.rb.
If you have run rspec --init may have a .rspec file which will require spec_helper.rb if it contains the line:
--require spec_helper
The most common practice when writing specs is to place specs in a directory named spec. That way you can run all the project specs by
$ rspec specs
Added:
This is a very common structure for gems and other ruby projects:
lib/
hello.rb
spec/
spec_helper.rb
hello_spec.rb
Its so common that RSpec will add the /lib and /spec directory to the load path automatically.
So you can do:
# spec/hello_spec.rb
require 'spec_helper'
require 'lib/hello' # instead of a relative path! Wehoo.
RSpec.describe Hello do
# ...
end