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require "spec_helper"
require "hamster/set"
describe Hamster::Set do
describe "#first" do
context "on an empty set" do
it "returns nil" do
S.empty.first.should be_nil
end
end
context "on a non-empty set" do
it "returns an arbitrary value from the set" do
%w[A B C].include?(S["A", "B", "C"].first).should == true
end
end
it "returns nil if only member of set is nil" do
S[nil].first.should be(nil)
end
it "returns the first item yielded by #each" do
10.times do
set = S.new((rand(10)+1).times.collect { rand(10000 )})
set.each { |item| break item }.should be(set.first)
end
end
end
end
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