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# frozen_string_literal: true
require_relative "../test_helper"
module Prism
class OverlapTest < TestCase
Fixture.each do |fixture|
define_method(fixture.test_name) { assert_overlap(fixture) }
end
private
# Check that the location ranges of each node in the tree are a superset of
# their respective child nodes.
def assert_overlap(fixture)
queue = [Prism.parse_file(fixture.full_path).value]
while (current = queue.shift)
# We only want to compare parent/child location overlap in the case that
# we are not looking at a heredoc. That's because heredoc locations are
# special in that they only use the declaration of the heredoc.
compare = !(current.is_a?(StringNode) ||
current.is_a?(XStringNode) ||
current.is_a?(InterpolatedStringNode) ||
current.is_a?(InterpolatedXStringNode)) ||
!current.opening&.start_with?("<<")
current.child_nodes.each do |child|
# child_nodes can return nil values, so we need to skip those.
next unless child
# Now that we know we have a child node, add that to the queue.
queue << child
if compare
assert_operator current.location.start_offset, :<=, child.location.start_offset
assert_operator current.location.end_offset, :>=, child.location.end_offset
end
end
end
end
end
end
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