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Contents
require 'spec_helper'
module AndPredicateSpec
describe "An &-predicated terminal symbol" do
testing_expression '&"foo"'
it "successfully parses input matching the terminal symbol, returning an epsilon syntax node" do
parse('foo', :consume_all_input => false) do |result|
result.should_not be_nil
result.interval.should == (0...0)
end
end
end
describe "A sequence of a terminal and an and another &-predicated terminal" do
testing_expression '"foo" &"bar"'
it "matches input matching both terminals, but only consumes the first" do
parse('foobar', :consume_all_input => false) do |result|
result.should_not be_nil
result.text_value.should == 'foo'
end
end
it "fails to parse input matching only the first terminal, with a terminal failure recorded at index 3" do
parse('foo') do |result|
result.should be_nil
terminal_failures = parser.terminal_failures
terminal_failures.size.should == 1
failure = terminal_failures[0]
failure.index.should == 3
failure.expected_string.should == '"bar"'
end
end
end
end
Version data entries
9 entries across 9 versions & 2 rubygems