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require "spec_helper"
require "set"
require "hamster/set"
describe Hamster::Set do
let(:set) { S["A", "B", "C"] }
describe "#each" do
let(:each) { set.each(&block) }
context "without a block" do
let(:block) { nil }
it "returns an Enumerator" do
expect(each.class).to be(Enumerator)
expect(each.to_a).to eq(set.to_a)
end
end
context "with an empty block" do
let(:block) { ->(item) {} }
it "returns self" do
expect(each).to be(set)
end
end
context "with a block" do
let(:items) { ::Set.new }
let(:values) { ::Set.new(%w[A B C]) }
let(:block) { ->(item) { items << item } }
before(:each) { each }
it "yields all values" do
expect(items).to eq(values)
end
end
it "yields both of a pair of colliding keys" do
set = S[DeterministicHash.new('a', 1010), DeterministicHash.new('b', 1010)]
yielded = []
set.each { |obj| yielded << obj }
yielded.map(&:value).sort.should == ['a', 'b']
end
end
end
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