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Contents
# encoding: utf-8 require 'spec_helper' describe Function::Proposition, '#inverse' do subject { object.inverse } let(:described_class) { Class.new(Function::Proposition) } let(:inverse_class) { double('Inverse Class', instance: inverse_instance) } let(:inverse_instance) { double('Inverse Instance') } let(:object) { described_class.new } before do described_class.stub(inverse: inverse_class) end it 'calls .inverse on the class' do described_class.should_receive(:inverse).with(no_args).and_return(inverse_class) subject end it 'calls .instance on the inverse class' do inverse_class.should_receive(:instance).with(no_args) subject end it { should be(inverse_instance) } end
Version data entries
1 entries across 1 versions & 1 rubygems
Version | Path |
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axiom-0.1.1 | spec/unit/axiom/function/proposition/inverse_spec.rb |