24 lines
602 B
Ruby
24 lines
602 B
Ruby
require 'spec_helper.rb'
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describe 'explicitly convertable null object' do
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let(:null_class) do
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Naught.build do |b|
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b.define_explicit_conversions
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end
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end
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subject(:null) { null_class.new }
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it 'defines common explicit conversions to return zero values' do
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expect(null.to_s).to eq('')
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expect(null.to_a).to eq([])
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expect(null.to_i).to eq(0)
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expect(null.to_f).to eq(0.0)
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if RUBY_VERSION >= '2.0'
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expect(null.to_h).to eq({})
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elsif RUBY_VERSION >= '1.9'
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expect(null.to_c).to eq(Complex(0))
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expect(null.to_r).to eq(Rational(0))
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end
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end
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end
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