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Contents
require File.expand_path(File.dirname(__FILE__) + "/../spec_helper")
describe Ranking do
context "with many items" do
specify "it should give top x items" do
ranking = Ranking.new
ranking[:a] = 10
ranking[:b] = 50
ranking[:c] = 1
ranking.top(2).should == [:b,:a]
end
specify "if gives all items if param is not numeric" do
ranking = Ranking.new
ranking[:a] = 10
ranking[:b] = 50
ranking[:c] = 1
ranking.top(nil).should == [:b,:a, :c]
ranking.top(:all).should == [:b,:a, :c]
end
specify "lowest item is at 0 percentile" do
ranking = Ranking.new
ranking[:a] = 10
ranking[:b] = 50
ranking.percentile(:a).should == 0
end
specify "highest item is at high percentile" do
ranking = Ranking.new
ranking[:a] = 10
ranking[:b] = 50
ranking[:c] = 0
ranking[:d] = 5
ranking.percentile(:b).should == 0.75
end
end
end
Version data entries
9 entries across 9 versions & 2 rubygems