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# frozen_string_literal: true
require 'rubocop_spec_helper'
require_relative '../../../rubocop/cop/avoid_return_from_blocks'
RSpec.describe RuboCop::Cop::AvoidReturnFromBlocks do
it 'flags violation for return inside a block' do
expect_offense(<<~RUBY)
call do
do_something
return if something_else
^^^^^^ Do not return from a block, use next or break instead.
end
RUBY
end
it "doesn't create more than one offense for nested blocks" do
expect_offense(<<~RUBY)
call do
call do
something
return if something_else
^^^^^^ Do not return from a block, use next or break instead.
end
end
RUBY
end
it 'flags violation for return inside included > def > block' do
expect_offense(<<~RUBY)
included do
def a_method
return if something
call do
return if something_else
^^^^^^ Do not return from a block, use next or break instead.
end
end
end
RUBY
end
shared_examples 'examples with whitelisted method' do |whitelisted_method|
it "doesn't flag violation for return inside #{whitelisted_method}" do
expect_no_offenses(<<~RUBY)
items.#{whitelisted_method} do |item|
do_something
return if something_else
end
RUBY
end
end
%i[each each_filename times loop].each do |whitelisted_method|
it_behaves_like 'examples with whitelisted method', whitelisted_method
end
shared_examples 'examples with def methods' do |def_method|
it "doesn't flag violation for return inside #{def_method}" do
expect_no_offenses(<<~RUBY)
helpers do
#{def_method} do
return if something
do_something_more
end
end
RUBY
end
end
%i[define_method lambda].each do |def_method|
it_behaves_like 'examples with def methods', def_method
end
it "doesn't flag violation for return inside a lambda" do
expect_no_offenses(<<~RUBY)
lambda do
do_something
return if something_else
end
RUBY
end
it "doesn't flag violation for return used inside a method definition" do
expect_no_offenses(<<~RUBY)
describe Klass do
def a_method
do_something
return if something_else
end
end
RUBY
end
it "doesn't flag violation for next inside a block" do
expect_no_offenses(<<~RUBY)
call do
do_something
next if something_else
end
RUBY
end
it "doesn't flag violation for break inside a block" do
expect_no_offenses(<<~RUBY)
call do
do_something
break if something_else
end
RUBY
end
it "doesn't check when block is empty" do
expect_no_offenses(<<~RUBY)
call do
end
RUBY
end
end
|
