gitlab-org--gitlab-foss/spec/rubocop/cop/custom_error_class_spec.rb

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require 'spec_helper'
require 'rubocop'
require 'rubocop/rspec/support'
require_relative '../../../rubocop/cop/custom_error_class'
describe RuboCop::Cop::CustomErrorClass do
include CopHelper
subject(:cop) { described_class.new }
context 'when a class has a body' do
it 'does nothing' do
inspect_source(cop, 'class CustomError < StandardError; def foo; end; end')
expect(cop.offenses).to be_empty
end
end
context 'when a class has no explicit superclass' do
it 'does nothing' do
inspect_source(cop, 'class CustomError; end')
expect(cop.offenses).to be_empty
end
end
context 'when a class has a superclass that does not end in Error' do
it 'does nothing' do
inspect_source(cop, 'class CustomError < BasicObject; end')
expect(cop.offenses).to be_empty
end
end
context 'when a class is empty and inherits from a class ending in Error' do
context 'when the class is on a single line' do
let(:source) do
<<-SOURCE
module Foo
class CustomError < Bar::Baz::BaseError; end
end
SOURCE
end
let(:expected) do
<<-EXPECTED
module Foo
CustomError = Class.new(Bar::Baz::BaseError)
end
EXPECTED
end
it 'registers an offense' do
expected_highlights = source.split("\n")[1].strip
inspect_source(cop, source)
aggregate_failures do
expect(cop.offenses.size).to eq(1)
expect(cop.offenses.map(&:line)).to eq([2])
expect(cop.highlights).to contain_exactly(expected_highlights)
end
end
it 'autocorrects to the right version' do
autocorrected = autocorrect_source(cop, source, 'foo/custom_error.rb')
expect(autocorrected).to eq(expected)
end
end
context 'when the class is on multiple lines' do
let(:source) do
<<-SOURCE
module Foo
class CustomError < Bar::Baz::BaseError
end
end
SOURCE
end
let(:expected) do
<<-EXPECTED
module Foo
CustomError = Class.new(Bar::Baz::BaseError)
end
EXPECTED
end
it 'registers an offense' do
expected_highlights = source.split("\n")[1..2].join("\n").strip
inspect_source(cop, source)
aggregate_failures do
expect(cop.offenses.size).to eq(1)
expect(cop.offenses.map(&:line)).to eq([2])
expect(cop.highlights).to contain_exactly(expected_highlights)
end
end
it 'autocorrects to the right version' do
autocorrected = autocorrect_source(cop, source, 'foo/custom_error.rb')
expect(autocorrected).to eq(expected)
end
end
end
end