thank u

Couldn't understand
[1,[1,1]] not same as [[2,2],2] and[1,'[',']'] same as ['[',']',1]
Anyone can explain why [1,'[',']'] same as ['[',']',1]?

Test Driven Development (TDD)

From Ruby 3.0, RSpec is used under the hood.

See https://rspec.info/

Defaults to the global describe for backwards compatibility, but RSpec.desribe works as well.

describe "Example" do
it "should return the sum" do
expect(add(1, 1)).to eq(2)
# The following is still supported, but new tests should now use them.
# Test.assert_equals(add(1, 1), 2)
end
end

Time: 518ms Passed: 0Failed: 1Errors: 1
Test Results:
Example
should return the sum
#<NoMethodError: undefined method add' for main:Object> main.rb:24:in block (2 levels) in '
/runner/frameworks/ruby/cw-2.rb:180:in wrap_error' /runner/frameworks/ruby/cw-2.rb:72:in it'
/runner/frameworks/ruby/cw-2.rb:206:in it' main.rb:23:in block in '
/runner/frameworks/ruby/cw-2.rb:55:in block in describe' /runner/frameworks/ruby/cw-2.rb:46:in measure'
/runner/frameworks/ruby/cw-2.rb:51:in describe' /runner/frameworks/ruby/cw-2.rb:202:in describe'
main.rb:22:in `'

I focused on block.thank u so much