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#!/usr/bin/env ruby
require 'spec_helper'
describe Puppet::Parser::AST::Function do
before :each do
@scope = mock 'scope'
end
describe "when initializing" do
it "should not fail if the function doesn't exist" do
Puppet::Parser::Functions.stubs(:function).returns(false)
lambda{ Puppet::Parser::AST::Function.new :name => "dontexist" }.should_not raise_error(Puppet::ParseError)
end
end
it "should return its representation with to_s" do
args = stub 'args', :is_a? => true, :to_s => "[a, b]"
Puppet::Parser::AST::Function.new(:name => "func", :arguments => args).to_s.should == "func(a, b)"
end
describe "when evaluating" do
it "should fail if the function doesn't exist" do
Puppet::Parser::Functions.stubs(:function).returns(false)
func = Puppet::Parser::AST::Function.new :name => "dontexist"
lambda{ func.evaluate(@scope) }.should raise_error(Puppet::ParseError)
end
it "should fail if the function is a statement used as rvalue" do
Puppet::Parser::Functions.stubs(:function).with("exist").returns(true)
Puppet::Parser::Functions.stubs(:rvalue?).with("exist").returns(false)
func = Puppet::Parser::AST::Function.new :name => "exist", :ftype => :rvalue
lambda{ func.evaluate(@scope) }.should raise_error(Puppet::ParseError, "Function 'exist' does not return a value")
end
it "should fail if the function is an rvalue used as statement" do
Puppet::Parser::Functions.stubs(:function).with("exist").returns(true)
Puppet::Parser::Functions.stubs(:rvalue?).with("exist").returns(true)
func = Puppet::Parser::AST::Function.new :name => "exist", :ftype => :statement
lambda{ func.evaluate(@scope) }.should raise_error(Puppet::ParseError,"Function 'exist' must be the value of a statement")
end
it "should evaluate its arguments" do
argument = stub 'arg'
Puppet::Parser::Functions.stubs(:function).with("exist").returns(true)
func = Puppet::Parser::AST::Function.new :name => "exist", :ftype => :statement, :arguments => argument
@scope.stubs(:function_exist)
argument.expects(:safeevaluate).with(@scope).returns("argument")
func.evaluate(@scope)
end
it "should call the underlying ruby function" do
argument = stub 'arg', :safeevaluate => ["nothing"]
Puppet::Parser::Functions.stubs(:function).with("exist").returns(true)
func = Puppet::Parser::AST::Function.new :name => "exist", :ftype => :statement, :arguments => argument
@scope.expects(:function_exist).with(["nothing"])
func.evaluate(@scope)
end
it "should convert :undef to '' in arguments" do
argument = stub 'arg', :safeevaluate => ["foo", :undef, "bar"]
Puppet::Parser::Functions.stubs(:function).with("exist").returns(true)
func = Puppet::Parser::AST::Function.new :name => "exist", :ftype => :statement, :arguments => argument
@scope.expects(:function_exist).with(["foo", "", "bar"])
func.evaluate(@scope)
end
it "should return the ruby function return for rvalue functions" do
argument = stub 'arg', :safeevaluate => ["nothing"]
Puppet::Parser::Functions.stubs(:function).with("exist").returns(true)
func = Puppet::Parser::AST::Function.new :name => "exist", :ftype => :statement, :arguments => argument
@scope.stubs(:function_exist).with(["nothing"]).returns("returning")
func.evaluate(@scope).should == "returning"
end
end
end
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