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Contents
require 'spec_helper'
module Sexpr
describe Grammar, "parse" do
def grammar
Sexpr.load(:parser => parser).extend Module.new{
def default_parse_options
{:root => :root_rule, :hello => "world"}
end
}
end
context 'when no parser is set' do
let(:parser){ nil }
it 'raises an error' do
lambda{
grammar.parse("Hello world")
}.should raise_error(NoParserError)
end
end
context 'when a parser is set' do
let(:parser){
Object.new.extend Module.new{
include Parser
def parse(s, options = {})
[options[:root], "#{s} #{options[:hello]}"]
end
}
}
it 'uses default options when no options are passed' do
grammar.parse("Hello").should eq([:root_rule, "Hello world"])
end
it 'merge passed options with default ones' do
grammar.parse("Hello", :root => :another_rule).should eq([:another_rule, "Hello world"])
end
end # when a parser is set
end
end
Version data entries
6 entries across 6 versions & 1 rubygems