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RSpec.describe 'RSpec::Core::Set' do
let(:set) { RSpec::Core::Set.new([1, 2, 3]) }
it 'takes an array of values' do
expect(set).to include(1, 2, 3)
end
it 'can be appended to' do
set << 4
expect(set).to include 4
end
it 'can have more values merged in' do
set.merge([4, 5]).merge([6])
expect(set).to include(4, 5, 6)
end
it 'is enumerable' do
expect(set).to be_an Enumerable
expect { |p| set.each(&p) }.to yield_successive_args(1, 2, 3)
end
it 'supports deletions' do
expect {
set.delete(1)
}.to change { set.include?(1) }.from(true).to(false)
end
it 'indicates if it is empty' do
set = RSpec::Core::Set.new
expect {
set << 1
}.to change { set.empty? }.from(true).to(false)
end
it 'can be cleared' do
expect { set.clear }.to change { set.empty? }.from(false).to(true)
expect(set.clear).to equal(set)
end
end
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