require File.expand_path('../test_helper.rb', File.dirname(__FILE__))

describe 'Handling errors' do
  describe 'RipperRubyParser::Parser#parse' do
    let :newparser do
      RipperRubyParser::Parser.new
    end

    it 'raises an error for an incomplete source' do
      proc {
        newparser.parse 'def foo'
      }.must_raise RipperRubyParser::SyntaxError
    end

    it 'raises an error for an invalid class name' do
      proc {
        newparser.parse('class foo; end')
      }.must_raise RipperRubyParser::SyntaxError
    end

    it 'raises an error aliasing $1 as foo' do
      proc {
        newparser.parse 'alias foo $1'
      }.must_raise RipperRubyParser::SyntaxError
    end

    it 'raises an error aliasing foo as $1' do
      proc {
        newparser.parse 'alias $1 foo'
      }.must_raise RipperRubyParser::SyntaxError
    end

    it 'raises an error aliasing $2 as $1' do
      proc {
        newparser.parse 'alias $1 $2'
      }.must_raise RipperRubyParser::SyntaxError
    end

    it 'raises an error assigning to $1' do
      proc {
        newparser.parse '$1 = foo'
      }.must_raise RipperRubyParser::SyntaxError
    end

    it 'raises an error using an invalid parameter name' do
      proc {
        newparser.parse 'def foo(BAR); end'
      }.must_raise RipperRubyParser::SyntaxError
    end
  end
end