Contents

require File.join(File.dirname(__FILE__), '..', 'test_helper')

class ZeroOrMoreOfATerminalWithNodeClassDeclarationTest < CompilerTestCase
  
  class Foo < Treetop::Runtime::SyntaxNode
  end

  testing_expression '"foo"* <Foo> { def a_method; end }'
  
  it "successfully parses epsilon, returning an instance declared node class with a nested failure" do
    parse('') do |result|
      result.should be_success
      result.should be_an_instance_of(Foo)
      result.should respond_to(:a_method)
      result.nested_failures.size.should == 1
      nested_failure = result.nested_failures.first
      nested_failure.index.should == 0
      nested_failure.expected_string.should == 'foo'
    end
  end
  
  it "successfully parses two of that terminal in a row, returning an instance of the declared node class with a nested failure representing the third attempt " do
    parse("foofoo") do |result|
      result.should be_success
      result.should be_an_instance_of(Foo)
      result.nested_failures.size.should == 1
      nested_failure = result.nested_failures.first
      nested_failure.index.should == 6
      nested_failure.expected_string.should == 'foo'
    end
  end
end

describe "Zero or more of a sequence", :extend => CompilerTestCase do
  testing_expression '("foo" "bar")*'
  
  it "resets the index appropriately following partially matcing input" do
    parse('foobarfoo') do |result|
      result.should be_success
      result.interval.should == (0...6)
    end
  end
end

describe "Zero or more of a choice", :extend => CompilerTestCase do
  testing_expression '("a" / "b")*'

  it "successfully parses matching input" do
    parse('abba').should be_success
  end
end

Version data entries

6 entries across 6 versions & 1 rubygems

Version	Path
treetop-1.1.0	test/compiler/zero_or_more_test.rb
treetop-1.0.1	test/compiler/zero_or_more_test.rb
treetop-1.0.2	test/compiler/zero_or_more_test.rb
treetop-1.1.2	test/compiler/zero_or_more_test.rb
treetop-1.0.0	test/compiler/zero_or_more_test.rb
treetop-1.1.1	test/compiler/zero_or_more_test.rb