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Versions: 13
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Contents
# encoding: utf-8
require 'spec_helper'
describe RuboCop::Cop::Lint::StringConversionInInterpolation do
subject(:cop) { described_class.new }
it 'registers an offense for #to_s in interpolation' do
inspect_source(cop, '"this is the #{result.to_s}"')
expect(cop.offenses.size).to eq(1)
expect(cop.messages)
.to eq(['Redundant use of `Object#to_s` in interpolation.'])
end
it 'detects #to_s in an interpolation with several expressions' do
inspect_source(cop, '"this is the #{top; result.to_s}"')
expect(cop.offenses.size).to eq(1)
end
it 'accepts #to_s with arguments in an interpolation' do
inspect_source(cop, '"this is a #{result.to_s(8)}"')
expect(cop.offenses).to be_empty
end
it 'accepts interpolation without #to_s' do
inspect_source(cop, '"this is the #{result}"')
expect(cop.offenses).to be_empty
end
it 'does not explode on implicit receiver' do
inspect_source(cop, '"#{to_s}"')
expect(cop.offenses.size).to eq(1)
expect(cop.messages)
.to eq(['Use `self` instead of `Object#to_s` in interpolation.'])
end
it 'does not explode on empty interpolation' do
inspect_source(cop, '"this is #{} silly"')
expect(cop.offenses).to be_empty
end
it 'autocorrects by removing the redundant to_s' do
corrected = autocorrect_source(cop, ['"some #{something.to_s}"'])
expect(corrected).to eq '"some #{something}"'
end
it 'autocorrects implicit receiver by replacing to_s with self' do
corrected = autocorrect_source(cop, ['"some #{to_s}"'])
expect(corrected).to eq '"some #{self}"'
end
end
Version data entries
13 entries across 13 versions & 2 rubygems