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path: root/spec/unit/parser/ast/boolean_operator.rb
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#!/usr/bin/env ruby

require File.dirname(__FILE__) + '/../../../spec_helper'

describe Puppet::Parser::AST::BooleanOperator do

    ast = Puppet::Parser::AST

    before :each do
        @scope = Puppet::Parser::Scope.new()
        @true_ast = ast::Boolean.new( :value => true)
        @false_ast = ast::Boolean.new( :value => false)
    end

    it "should evaluate left operand inconditionally" do
        lval = stub "lval"
        lval.expects(:safeevaluate).with(@scope).returns("true")
        rval = stub "rval", :safeevaluate => false
				rval.expects(:safeevaluate).never
        
        operator = ast::BooleanOperator.new :rval => rval, :operator => "or", :lval => lval
        operator.evaluate(@scope)
    end

    it "should evaluate right 'and' operand only if left operand is true" do
        lval = stub "lval", :safeevaluate => true
        rval = stub "rval", :safeevaluate => false
        rval.expects(:safeevaluate).with(@scope).returns(false)
        operator = ast::BooleanOperator.new :rval => rval, :operator => "and", :lval => lval
        operator.evaluate(@scope)
    end

    it "should evaluate right 'or' operand only if left operand is false" do
        lval = stub "lval", :safeevaluate => false
        rval = stub "rval", :safeevaluate => false
        rval.expects(:safeevaluate).with(@scope).returns(false)
        operator = ast::BooleanOperator.new :rval => rval, :operator => "or", :lval => lval
        operator.evaluate(@scope)
    end

    it "should return true for false OR true" do
        ast::BooleanOperator.new(:rval => @true_ast, :operator => "or", :lval => @false_ast).evaluate(@scope).should be_true
    end

    it "should return false for true AND false" do
        ast::BooleanOperator.new(:rval => @true_ast, :operator => "and", :lval => @false_ast ).evaluate(@scope).should be_false
    end

    it "should return true for true AND true" do
        ast::BooleanOperator.new(:rval => @true_ast, :operator => "and", :lval => @true_ast ).evaluate(@scope).should be_true
    end

end