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require "spec_helper"
require "set"
require "hamster/set"
describe Hamster::Set do
let(:set) { S["A", "B", "C"] }
describe "#reverse_each" do
let(:reverse_each) { set.reverse_each(&block) }
context "without a block" do
let(:block) { nil }
it "returns an Enumerator" do
expect(reverse_each.class).to be(Enumerator)
expect(reverse_each.to_a).to eq(set.to_a.reverse)
end
end
context "with an empty block" do
let(:block) { ->(item) {} }
it "returns self" do
expect(reverse_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) { reverse_each }
it "yields all values" do
expect(items).to eq(values)
end
end
end
end
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