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# frozen_string_literal: true
require_relative "../test_helper"
module Prism
class CommentsTest < TestCase
def test_comment_inline
source = "# comment"
assert_equal [0], Prism.parse(source).source.offsets
assert_comment(
source,
InlineComment,
start_offset: 0,
end_offset: 9,
start_line: 1,
end_line: 1,
start_column: 0,
end_column: 9
)
end
def test_comment_inline_def
source = <<~RUBY
def foo
# a comment
end
RUBY
assert_comment(
source,
InlineComment,
start_offset: 10,
end_offset: 21,
start_line: 2,
end_line: 2,
start_column: 2,
end_column: 13
)
end
def test___END__
result = Prism.parse(<<~RUBY)
__END__
comment
RUBY
data_loc = result.data_loc
assert_equal 0, data_loc.start_offset
assert_equal 16, data_loc.end_offset
end
def test___END__crlf
result = Prism.parse("__END__\r\ncomment\r\n")
data_loc = result.data_loc
assert_equal 0, data_loc.start_offset
assert_equal 18, data_loc.end_offset
end
def test_comment_embedded_document
source = <<~RUBY
=begin
comment
=end
RUBY
assert_comment(
source,
EmbDocComment,
start_offset: 0,
end_offset: 20,
start_line: 1,
end_line: 4,
start_column: 0,
end_column: 0
)
end
def test_comment_embedded_document_with_content_on_same_line
source = <<~RUBY
=begin other stuff
=end
RUBY
assert_comment(
source,
EmbDocComment,
start_offset: 0,
end_offset: 24,
start_line: 1,
end_line: 3,
start_column: 0,
end_column: 0
)
end
def test_attaching_comments
source = <<~RUBY
# Foo class
class Foo
# bar method
def bar
# baz invocation
baz
end # bar end
end # Foo end
RUBY
result = Prism.parse(source)
result.attach_comments!
tree = result.value
class_node = tree.statements.body.first
method_node = class_node.body.body.first
call_node = method_node.body.body.first
assert_equal("# Foo class\n# Foo end", class_node.location.comments.map { |c| c.location.slice }.join("\n"))
assert_equal("# bar method\n# bar end", method_node.location.comments.map { |c| c.location.slice }.join("\n"))
assert_equal("# baz invocation", call_node.location.comments.map { |c| c.location.slice }.join("\n"))
end
private
def assert_comment(source, type, start_offset:, end_offset:, start_line:, end_line:, start_column:, end_column:)
result = Prism.parse(source)
assert result.errors.empty?, result.errors.map(&:message).join("\n")
assert_kind_of type, result.comments.first
location = result.comments.first.location
assert_equal start_offset, location.start_offset, -> { "Expected start_offset to be #{start_offset}" }
assert_equal end_offset, location.end_offset, -> { "Expected end_offset to be #{end_offset}" }
assert_equal start_line, location.start_line, -> { "Expected start_line to be #{start_line}" }
assert_equal end_line, location.end_line, -> { "Expected end_line to be #{end_line}" }
assert_equal start_column, location.start_column, -> { "Expected start_column to be #{start_column}" }
assert_equal end_column, location.end_column, -> { "Expected end_column to be #{end_column}" }
end
end
end
|
