rspec

gistfile1.txt

shared_examples_for "hogehoge" do
  it "should be_valid" do
    check_count = 10
    check_count.times do
      sample_count = 1000
      counts = {1 => 0, 2 => 0}
      sample_count.times do 
        counts[xxx[:id]] += 1
      end
      (counts[1] < counts[2]).should be_true
      (counts[1] + counts[2]).should == sample_count
    end
  end
end

context "normal" do
  let(:a) { [{id: 1, weight:1}, {id:2, weight: 3}, {id:3, weight:nil}] }
  let(:xxx) { a.sample_with_weight }
  it_should_behave_like "hogehoge"
end

context "weightを取る属性名を指定" do
  let(:a) { [{id: 1, hoge_weight:1}, {id:2, hoge_weight: 2}] }
  let(:xxx) { a.sample_with_weight(:hoge_weight) }
  it_should_behave_like "hogehoge"
end