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Contents
require 'spec_helper'
describe Picky::Generators::Weights::Logarithmic do
describe 'with defaults' do
let(:logarithmic) { described_class.new }
describe 'saved?' do
it 'is correct' do
logarithmic.saved?.should == true
end
end
describe 'weight_for' do
it 'is 0 for 0' do
logarithmic.weight_for(0).should == 0
end
it 'is 0 for 1' do
logarithmic.weight_for(1).should == 0
end
it 'is log(x) for x' do
logarithmic.weight_for(1234).should == Math.log(1234).round(3)
end
end
end
describe 'with constant' do
let(:logarithmic) { described_class.new(3.5) }
describe 'saved?' do
it 'is correct' do
logarithmic.saved?.should == true
end
end
describe 'weight_for' do
it 'is 0 for 0' do
logarithmic.weight_for(0).should == 3.5
end
it 'is 0 for 1' do
logarithmic.weight_for(1).should == 3.5
end
it 'is log(x) for x' do
logarithmic.weight_for(1234).should == Math.log(1234).round(3) + 3.5
end
end
end
end
Version data entries
79 entries across 79 versions & 1 rubygems