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Contents
require 'spec_helper'
module Alf
describe Tuple, '<=>' do
let(:type) { Tuple[name: String, status: Integer] }
let(:supertype){ Tuple[name: String, status: Numeric] }
let(:subtype) { Tuple[name: String, status: Fixnum] }
subject{ type <=> other }
context 'on something else' do
let(:other){ Integer }
it{ should be_nil }
end
context 'on itself' do
let(:other){ type }
it{ should eq(0) }
end
context 'on same type' do
let(:other){ Tuple[name: String, status: Integer] }
it{ should eq(0) }
end
context 'on a sub type' do
let(:other){ subtype }
it{ should eq(1) }
end
context 'on a super type' do
let(:other){ supertype }
it{ should eq(-1) }
end
context 'the shortcuts' do
it 'the > shortcut classifies correctly' do
(supertype > supertype).should be_false
(supertype > type).should be_true
(supertype > subtype).should be_true
end
it 'the >= shortcut classifies correctly' do
(supertype >= supertype).should be_true
(supertype >= type).should be_true
(supertype >= subtype).should be_true
end
it 'the < shortcut classifies correctly' do
(supertype < supertype).should be_false
(supertype < type).should be_false
(supertype < subtype).should be_false
end
it 'the <= shortcut classifies correctly' do
(supertype <= supertype).should be_true
(supertype <= type).should be_false
(supertype <= subtype).should be_false
end
end
end
end
Version data entries
4 entries across 4 versions & 1 rubygems