I'm getting the error below
$ bundle exec rspec calculatorcli_spec.rb
Failure/Error: c = CalculatorCLI.parse
NoMethodError:
undefined method `parse' for CalculatorCLI:Class
from the below simple calculator class
CalculatorCLI is a class, and you're missing its initialization
either change CalculatorCLI.parse to CalculatorCLI.new.parseor changedef parsetodef self.parseinCalculatorCLI` definition
Related
I keep learning hanami and ran into the following problem: when I initialize and check the parameters, I encounter the following error
Boot Error
Something went wrong while loading /Users/anewaccount/Projects/Mediateka/config.ru
NoMethodError: undefined method `size' for nil:NilClass
/Users/anewaccount/.rvm/gems/ruby-2.7.2/gems/dry-validation-0.11.0/lib/dry/validation/schema/deprecated.rb:11:in `input_processor'
/Users/anewaccount/.rvm/gems/ruby-2.7.2/gems/dry-validation-0.11.0/lib/dry/validation/schema/class_interface.rb:165:in `default_options'
/Users/anewaccount/.rvm/gems/ruby-2.7.2/gems/dry-validation-0.11.0/lib/dry/validation/schema/class_interface.rb:35:in `new'
/Users/anewaccount/.rvm/gems/ruby-2.7.2/gems/hanami-validations-1.3.7/lib/hanami/validations.rb:109:in `validations'
/Users/anewaccount/.rvm/gems/ruby-2.7.2/gems/hanami-controller-1.3.3/lib/hanami/action/params.rb:152:in `params'
/Users/anewaccount/.rvm/gems/ruby-2.7.2/gems/hanami-controller-1.3.3/lib/hanami/action/validatable.rb:100:in `block in params'
/Users/anewaccount/.rvm/gems/ruby-2.7.2/gems/hanami-controller-1.3.3/lib/hanami/action/validatable.rb:100:in `class_eval'
/Users/anewaccount/.rvm/gems/ruby-2.7.2/gems/hanami-controller-1.3.3/lib/hanami/action/validatable.rb:100:in `params'
/Users/anewaccount/Projects/Mediateka/apps/web/controllers/auth/sign_up.rb:11:in `<class:SignUp>'
/Users/anewaccount/Projects/Mediateka/apps/web/controllers/auth/sign_up.rb:9:in `<module:Auth>'
/Users/anewaccount/Projects/Mediateka/apps/web/controllers/auth/sign_up.rb:8:in `<module:Controllers>'
/Users/anewaccount/Projects/Mediateka/apps/web/controllers/auth/sign_up.rb:7:in `<module:Web>'
/Users/anewaccount/Projects/Mediateka/apps/web/controllers/auth/sign_up.rb:6:in `<top (required)>'
/Users/anewaccount/.rvm/gems/ruby-2.7.2/gems/hanami-utils-1.3.8/lib/hanami/utils.rb:56:in `require_relative'
/Users/anewaccount/.rvm/gems/ruby-2.7.2/gems/hanami-utils-1.3.8/lib/hanami/utils.rb:56:in `block in require!'
/Users/anewaccount/.rvm/gems/ruby-2.7.2/gems/hanami-utils-1.3.8/lib/hanami/utils.rb:94:in `each'
/Users/anewaccount/.rvm/gems/ruby-2.7.2/gems/hanami-utils-1.3.8/lib/hanami/utils.rb:94:in `for_each_file_in'
/Users/anewaccount/.rvm/gems/ruby-2.7.2/gems/hanami-utils-1.3.8/lib/hanami/utils.rb:56:in `require!'
my action:
# frozen_string_literal: true
require 'pry-byebug'
require_relative 'auth_base_action'
module Web
module Controllers
module Auth
class SignUp < AuthBaseAction
params do
required(:user).schema do
required(:first_name).filled(:str?)
required(:last_name).filled(:str?)
required(:email).filled(:str?, format?: /#/)
required(:password).filled(:str?).confirmation
end
end
def call params
binding.pry
end
end
end
end
end
I wrote the params block according to the example from the official documentation on the idea that it should work, but I catch NoMethodError: undefined method `size 'for nil: NilClass I also saw in the official documentation that these validations are delegated from Hanami :: Validations, I installed gem' hanami- validation 'according to their official documentation, but I had the same error, then I started looking at other people's code and they were successful using the example from the official documentation. Please tell me what is the error or please explain what am I doing wrong? I'm already very confused
If I follow the following part of this article:
Figure out where a method was defined
object = Object.new
puts object.method(:blank?).source_location
=> ["/gems/activesupport-5.0.0.beta1/lib/active_support/core_ext/object/blank.rb", 14]
I should be able to find the definition of the blank? method, however when I try this code within irb with ruby 2.0.0 I get this error message:
➜ ~ irb
irb(main):001:0> object = Object.new
=> #<Object:0x007fc84882f088>
irb(main):002:0> puts object.method(:blank?).source_location
NameError: undefined method `blank?' for class `Object'
from (irb):2:in `method'
from (irb):2
from /usr/bin/irb:12:in `<main>'
Did I miss anything?
Thank you.
.blank? method does not exist for a Object type. I know for sure it exists for a String method if I include the active_support lib
irb(main):001:0> String.new.method(:blank?).source_location
=> ["/home/xeon/.rbenv/versions/2.3.4/lib/ruby/gems/2.3.0/gems/activesupport-4.2.8/lib/active_support/core_ext/object/blank.rb", 116]
If you include activesupport-5.0.0.beta1 then it will work for you. (Looking at the source path of the article you have posted)
So, for whatever reason there is no peek method in the ruby core Queue class. I am trying to create a child class that implements the peek method. However, I don't understand why I am getting an error. Is it not possible to use instance variables in this way? Looking at the source code for Queue, there are instance variables in the constructor of the parent class. Is there a way to reference these in the subclass?
class PeekQueue < Queue
def peek
#mutex.synchronize{
while true
if #que.empty?
raise ThreadError, "queue empty" if non_block
#waiting.push Thread.current
#mutex.sleep
else
return #que[0]
end
end
}
end
end
a = PeekQueue.new
a.push(1)
a.peek
NoMethodError: undefined method 'synchronize' for nil:NilClass
Edit: The Queue class is created at compile time, which is why I couldn't find the source on the ruby source code on github. This is what the parent class looks like:
https://gist.github.com/anonymous/574e20fea3a28663bfe2
I do not see that error:
irb(main):025:0> qq = PeekQueue.new
=> #<PeekQueue:0x000006002bf498 #que=[], #num_waiting=0, #mutex=#<Mutex:0x000006002bf420>, #cond=#<ConditionVariable:0x000006002bf3f8 #waiters={}, #waiters_mutex=#<Mutex:0x000006002bf3a8>>>
irb(main):026:0> qq.peek
NameError: undefined local variable or method `non_block' for #<PeekQueue:0x000006002bf498>
from (irb):15:in `block in peek'
from (irb):12:in `synchronize'
from (irb):12:in `peek'
from (irb):26
from /usr/bin/irb:12:in `<main>'
irb(main):027:0> qq.push 1
=> #<ConditionVariable:0x000006002bf3f8 #waiters={}, #waiters_mutex=#<Mutex:0x000006002bf3a8>>
irb(main):028:0> qq.peek
=> 1
Method #non_block seems to be an issue. But access to #mutex works with your code.
Here is the class that I'm testing contained in Foo.rb:
class Foo
def bar
return 2
end
end
Here is the my test contained in Foo_spec.rb:
require "./Foo.rb"
describe "Foo" do
before(:all) do
puts "#{Foo == nil}"
Foo.any_instance.stub(:bar).and_return(1)
end
it "should pass this" do
f = Foo.new
f.bar.should eq 1
end
end
I am getting the following output:
false
F
Failures:
1) Foo Should pass this
Failure/Error: Foo.any_instance.stub(:bar).and_return(1)
NoMethodError:
undefined method `any_instance_recorder_for' for nil:NilClass
# ./Foo_spec.rb:6:in `block (2 levels) in <top (required)>'
Finished in 0 seconds
1 example, 1 failure
Failed examples:
rspec ./Foo_spec.rb:9 # Foo Should pass this
I've consulted the doc and the example given is passing on my machine (so it isn't a problem with the rspec code), but it isn't giving me any information on what I might be doing wrong. The error message is also quite confusing as it's telling me not to call .any_instance on a nil:NilClass, but as I proved with my output, Foo isn't nil. How am I supposed to call .any_instance.stub on my custom object?
I'm using Ruby 1.9.3 and rspec 2.14.5.
You should use before(:each) for stubbing.
Stubs in before(:all) are not supported. The reason is that all stubs and mocks get cleared out after each example, so any stub that is set in before(:all) would work in the first example that happens to run in that group, but not for any others.
rspec-mocks readme
From Rspec 3 any_instance is not defined anymore.
Now use:
allow_any_instance_of(Foo).to receive(:bar).and_return(1)
Source for this and older versions:
https://makandracards.com/makandra/2561-stub-methods-on-any-instance-of-a-class-in-rspec-1-and-rspec-2
Updating rspec worked for me. You can do it using the following command:
bundle update rspec
I want to find out how to reproduce the following error in Ruby 1.9:
NoMethodError (undefined method `[]' for nil:NilClass):
It's my own interest. The following doesn't work for me:
a = nil
a[:key]
It produce the following error:
You have a nil object when you didn't expect it!
You might have expected an instance of Array.
The error occurred while evaluating nil.[]
Your code works on my machine (submitting an answer since I can't format the comments):
⇨ irb
1.9.3p194 :001 > a = nil
=> nil
1.9.3p194 :002 > a[:key]
NoMethodError: undefined method `[]' for nil:NilClass
from (irb):2
from /Users/bjc/.rvm/rubies/ruby-1.9.3-p194/bin/irb:16:in `<main>'