Rspec undefined local variable or method `matcher_name'

Question

I get an issue when launching rspec

Failure/Error:
       expect {
         post :create, params: {tag: attributes_for(:tag)}
       }.to change(Tag, :count).by(1)

     NameError:
       undefined local variable or method `matcher_name' for #<RSpec::Matchers::BuiltIn::Change:0x000000094f7348>
       Did you mean?  match_unless_raises

Edit :

it only occurs when I do

rspec

instead of

bundle exec rspec

score 1 · Answer 1 · answered Jun 16 '17 at 12:13

1

The console error log says probably you are supplying wrong method name, That's clear. Can you try changing the name of the method or variable which you are using?

You can also refer this for getting the difference between those two commands bundle exec rspec VS rspec spec

answered Jun 16 '17 at 12:13

Aashish

787
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16

"That's clear" - except that method name is nowhere in sight. How is that clear? – Sergio Tulentsev Jun 16 '17 at 12:18

score 1 · Accepted Answer · answered Jun 16 '17 at 12:16

1

Always use bundle exec with your project-related binaries. Without it, a wrong version is likely picked up. Check it.

rspec --version
bundle exec rspec --version

answered Jun 16 '17 at 12:16

Sergio Tulentsev

226,338
43
373
367

Rspec undefined local variable or method `matcher_name'

2 Answers2