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require 'spec_helper'
describe Picky::API::Category::Weight do
let(:object) do
Class.new do
include Picky::API::Category::Weight
def index_name
:some_index
end
def name
:some_category
end
end.new
end
context 'extract_weight' do
context 'with nil' do
it 'returns the default' do
object.extract_weight(nil).should == Picky::Weights::Default
end
end
context 'with a number' do
it 'returns a logarithmic weighter' do
object.extract_weight(7.3).should be_kind_of(Picky::Weights::Logarithmic)
end
it 'returns a logarithmic weighter' do
object.extract_weight(3.14).weight_for(10).should == 5.443 # ln(10) + 3.14 = 2.3025 + 3.14
end
end
context 'with a weight object' do
let(:weighter) do
Class.new do
def weight_for amount
7.0
end
end.new
end
it 'creates a tokenizer' do
object.extract_weight(weighter).weight_for(21).should == 7.0
end
end
context 'invalid weight' do
it 'raises with a nice error message' do
expect {
object.extract_weight Object.new
}.to raise_error(<<-ERROR)
weight options for some_index:some_category should be either
* for example a Weights::Logarithmic.new, Weights::Constant.new(int = 0), Weights::Dynamic.new(&block) etc.
or
* an object that responds to #weight_for(amount_of_ids_for_token) => float
ERROR
end
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems