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Contents
require 'spec_helper' module Alf describe TupleExpression, 'evaluate' do subject{ exp.evaluate(scope) } let(:tuple){ Tuple(name: "Jones") } let(:scope){ Support::TupleScope.new(tuple) } context 'when the proc is of arity 0' do let(:exp){ TupleExpression[->(){ name.upcase }] } it{ should eq("JONES") } end context 'when the proc is of arity 1' do let(:exp){ TupleExpression[->(t){ t.name.upcase }] } it{ should eq("JONES") } end context 'when the proc returns a bound expression' do let(:exp){ TupleExpression[->(t){ Algebra::Operand::Named.new(:suppliers, examples_database) }] } it{ should be_a(Relation) } end end # TupleExpression end # Alf
Version data entries
1 entries across 1 versions & 1 rubygems
Version | Path |
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alf-core-0.15.0 | spec/unit/alf-types/tuple_expression/test_evaluate.rb |