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require 'spec_helper'
require 'set'
describe Immutable::Set do
let(:set) { S[*values] }
let(:comparison) { S[*comparison_values] }
describe '#eql?' do
let(:eql?) { set.eql?(comparison) }
shared_examples 'comparing non-sets' do
let(:values) { %w[A B C] }
it 'returns false' do
expect(eql?).to eq(false)
end
end
context 'when comparing to a standard set' do
let(:comparison) { ::Set.new(%w[A B C]) }
include_examples 'comparing non-sets'
end
context 'when comparing to a arbitrary object' do
let(:comparison) { Object.new }
include_examples 'comparing non-sets'
end
context 'when comparing with a subclass of Immutable::Set' do
let(:comparison) { Class.new(Immutable::Set).new(%w[A B C]) }
include_examples 'comparing non-sets'
end
context 'with an empty set for each comparison' do
let(:values) { [] }
let(:comparison_values) { [] }
it 'returns true' do
expect(eql?).to eq(true)
end
end
context 'with an empty set and a set with nil' do
let(:values) { [] }
let(:comparison_values) { [nil] }
it 'returns false' do
expect(eql?).to eq(false)
end
end
context 'with a single item array and empty array' do
let(:values) { ['A'] }
let(:comparison_values) { [] }
it 'returns false' do
expect(eql?).to eq(false)
end
end
context 'with matching single item array' do
let(:values) { ['A'] }
let(:comparison_values) { ['A'] }
it 'returns true' do
expect(eql?).to eq(true)
end
end
context 'with mismatching single item array' do
let(:values) { ['A'] }
let(:comparison_values) { ['B'] }
it 'returns false' do
expect(eql?).to eq(false)
end
end
context 'with a multi-item array and single item array' do
let(:values) { %w[A B] }
let(:comparison_values) { ['A'] }
it 'returns false' do
expect(eql?).to eq(false)
end
end
context 'with matching multi-item array' do
let(:values) { %w[A B] }
let(:comparison_values) { %w[A B] }
it 'returns true' do
expect(eql?).to eq(true)
end
end
context 'with a mismatching multi-item array' do
let(:values) { %w[A B] }
let(:comparison_values) { %w[B A] }
it 'returns true' do
expect(eql?).to eq(true)
end
end
end
end
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