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Contents
# encoding: utf-8 require 'spec_helper' describe Algebra::Summarization::Summaries, '#summarize_by' do subject { object.summarize_by(header, tuple) } let(:object) { described_class.new(summarizers) } let(:summarizers) { { :count => summarizer } } let(:summarizer) { mock('Summarizer', :call => 1) } let(:header) { Relation::Header.new([ [ :id, Integer ] ]) } let(:tuple) { Tuple.new(header, [ 1 ]) } it 'passes the tuple to the aggregate function' do summarizer.should_receive(:call).with(nil, tuple) subject end it 'aggregates the value returned by the summarizer' do subject key, value = subject.to_hash.first key.should == :count value.should be_kind_of(Algebra::Summarization::Summary) value.call(tuple).should == 1 end end
Version data entries
1 entries across 1 versions & 1 rubygems
Version | Path |
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veritas-0.0.4 | spec/unit/veritas/algebra/summarization/summaries/summarize_by_spec.rb |