зеркало из https://github.com/github/ruby.git
338 строки
9.3 KiB
Ruby
338 строки
9.3 KiB
Ruby
# frozen_string_literal: true
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begin
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require 'ripper'
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require 'test/unit'
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module TestRipper; end
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rescue LoadError
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end
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class TestRipper::Lexer < Test::Unit::TestCase
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def test_nested_dedent_heredoc
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bug = '[ruby-core:80977] [Bug #13536]'
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str = <<~'E'
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<<~"D"
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#{
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<<~"B"
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this must be a valid ruby
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B
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}
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D
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E
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assert_equal(str, Ripper.tokenize(str).join(""), bug)
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str = <<~'E'
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<<~"D"
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#{
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<<~"B"
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this must be a valid ruby
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B
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}
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D
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E
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assert_equal(str, Ripper.tokenize(str).join(""), bug)
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end
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def test_embedded_expr_in_heredoc
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src = <<~'E'
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<<~B
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#{1}
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B
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E
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expect = %I[
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on_heredoc_beg
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on_nl
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on_ignored_sp
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on_embexpr_beg
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on_int
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on_embexpr_end
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on_tstring_content
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on_heredoc_end
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]
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assert_equal expect, Ripper.lex(src).map {|e| e[1]}
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end
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def test_space_after_expr_in_heredoc
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src = <<~'E'
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<<~B
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#{1} a
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B
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E
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expect = %I[
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on_heredoc_beg
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on_nl
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on_ignored_sp
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on_embexpr_beg
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on_int
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on_embexpr_end
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on_tstring_content
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on_heredoc_end
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]
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assert_equal expect, Ripper.lex(src).map {|e| e[1]}
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end
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def test_expr_at_beginning_in_heredoc
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src = <<~'E'
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<<~B
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a
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#{1}
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B
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E
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expect = %I[
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on_heredoc_beg
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on_nl
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on_tstring_content
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on_embexpr_beg
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on_int
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on_embexpr_end
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on_tstring_content
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on_heredoc_end
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]
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assert_equal expect, Ripper.lex(src).map {|e| e[1]}
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end
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def test_stack_at_on_heredoc_beg
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src = "a <<b"
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expect = %I[
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on_ident
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on_sp
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on_heredoc_beg
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]
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assert_equal expect, Ripper.lex(src).map {|e| e[1]}
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end
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def test_end_of_script_char
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all_assertions do |all|
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["a", %w"[a ]", %w"{, }", "if"].each do |src, append|
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expected = Ripper.lex(src).map {|e| e[1]}
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["\0b", "\4b", "\32b"].each do |eof|
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c = "#{src}#{eof}#{append}"
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all.for(c) do
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assert_equal expected, Ripper.lex(c).map {|e| e[1]}
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end
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end
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end
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end
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end
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def test_slice
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assert_equal "string\#{nil}\n",
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Ripper.slice(%(<<HERE\nstring\#{nil}\nHERE), "heredoc_beg .*? nl $(.*?) heredoc_end", 1)
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end
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def state(name)
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Ripper::Lexer::State.new(Ripper.const_get(name))
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end
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def test_state_after_ivar
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assert_equal [[1,0],:on_ivar,"@a",state(:EXPR_END)], Ripper.lex("@a").last
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assert_equal [[1,1],:on_ivar,"@a",state(:EXPR_ENDFN)], Ripper.lex(":@a").last
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assert_equal [[1,1],:on_int,"1",state(:EXPR_END)], Ripper.lex("@1").last
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assert_equal [[1,2],:on_int,"1",state(:EXPR_END)], Ripper.lex(":@1").last
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end
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def test_state_after_cvar
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assert_equal [[1,0],:on_cvar,"@@a",state(:EXPR_END)], Ripper.lex("@@a").last
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assert_equal [[1,1],:on_cvar,"@@a",state(:EXPR_ENDFN)], Ripper.lex(":@@a").last
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assert_equal [[1,2],:on_int,"1",state(:EXPR_END)], Ripper.lex("@@1").last
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assert_equal [[1,3],:on_int,"1",state(:EXPR_END)], Ripper.lex(":@@1").last
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end
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def test_token_aftr_error_heredoc
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code = "<<A.upcase\n"
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result = Ripper::Lexer.new(code).scan
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message = proc {result.pretty_inspect}
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expected = [
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[[1, 0], :on_heredoc_beg, "<<A", state(:EXPR_BEG)],
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[[1, 2], :compile_error, "A", state(:EXPR_BEG), "can't find string \"A\" anywhere before EOF"],
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[[1, 3], :on_period, ".", state(:EXPR_DOT)],
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[[1, 4], :on_ident, "upcase", state(:EXPR_ARG)],
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[[1, 10], :on_nl, "\n", state(:EXPR_BEG)],
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]
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pos = 0
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expected.each_with_index do |ex, i|
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s = result[i]
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assert_equal ex, s.to_a, message
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if pos > s.pos[1]
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assert_equal pos, s.pos[1] + s.tok.bytesize, message
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else
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assert_equal pos, s.pos[1], message
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pos += s.tok.bytesize
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end
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end
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assert_equal pos, code.bytesize
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assert_equal expected.size, result.size
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end
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def test_trailing_on_embexpr_end
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# This is useful for scanning a template engine literal `{ foo, bar: baz }`
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# whose body inside brackes works like trailing method arguments, like Haml.
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token = Ripper.lex("a( foo, bar: baz }").last
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assert_equal [[1, 17], :on_embexpr_end, "}", state(:EXPR_ARG)], token
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end
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BAD_CODE = [
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[:parse_error, 'def req(true) end', %r[unexpected `true'], 'true'],
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[:parse_error, 'def req(a, a) end', %r[duplicated argument name], 'a'],
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[:assign_error, 'begin; nil = 1; end', %r[assign to nil], 'nil'],
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[:alias_error, 'begin; alias $x $1; end', %r[number variables], '$1'],
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[:class_name_error, 'class bad; end', %r[class/module name], 'bad'],
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[:param_error, 'def req(@a) end', %r[formal argument.*instance], '@a'],
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[:param_error, 'def req(a?:) end', %r[formal argument must.*local], 'a?'],
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]
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def test_raise_errors_keyword
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all_assertions do |all|
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BAD_CODE.each do |(err, code, message)|
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all.for([err, code]) do
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assert_raise_with_message(SyntaxError, message) { Ripper.tokenize(code, raise_errors: true) }
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end
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end
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end
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end
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def test_tokenize_with_syntax_error
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all_assertions do |all|
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BAD_CODE.each do |(err, code)|
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all.for([err, code]) do
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assert_equal "end", Ripper.tokenize(code).last
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end
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end
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end
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end
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def test_lex_with_syntax_error
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all_assertions do |all|
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BAD_CODE.each do |(err, code)|
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all.for([err, code]) do
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assert_equal [[1, code.size-3], :on_kw, "end", state(:EXPR_END)], Ripper.lex(code).last
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end
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end
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end
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end
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def test_lexer_scan_with_syntax_error
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all_assertions do |all|
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BAD_CODE.each do |(err, code, message, token)|
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all.for([err, code]) do
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lexer = Ripper::Lexer.new(code)
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elems = lexer.scan
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assert_predicate lexer, :error?
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error = lexer.errors.first
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assert_match message, error.message
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i = elems.find_index{|e| e == error}
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assert_operator 0...elems.size, :include?, i
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elem = elems[i + 1]
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assert_not_equal error.event, elem.event
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assert_equal error.pos, elem.pos
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assert_equal error.tok, elem.tok
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assert_equal error.state, elem.state
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end
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end
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end
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end
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def test_lex_with_syntax_error_and_heredoc
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bug = '[Bug #17644]'
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s = <<~EOF
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foo
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end
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<<~EOS
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bar
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EOS
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EOF
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assert_equal([[5, 0], :on_heredoc_end, "EOS\n", state(:EXPR_BEG)], Ripper.lex(s).last, bug)
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end
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def test_tokenize_with_here_document
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bug = '[Bug #18963]'
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code = %[
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<<A + "hello
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A
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world"
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]
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assert_equal(code, Ripper.tokenize(code).join(""), bug)
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end
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def test_heredoc_inside_block_param
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bug = '[Bug #19399]'
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code = <<~CODE
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a do |b
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<<-C
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C
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end
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CODE
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assert_equal(code, Ripper.tokenize(code).join(""), bug)
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end
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def test_heredoc_unterminated_interpolation
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code = <<~'HEREDOC'
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<<A+1
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#{
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HEREDOC
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assert_include(Ripper.tokenize(code).join(""), "+1")
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end
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def test_nested_heredoc
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code = <<~'HEREDOC'
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<<~H1
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1
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#{<<~H2}
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2
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H2
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3
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H1
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HEREDOC
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expected = [
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[[1, 0], :on_heredoc_beg, "<<~H1", state(:EXPR_BEG)],
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[[1, 5], :on_nl, "\n", state(:EXPR_BEG)],
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[[2, 0], :on_ignored_sp, " ", state(:EXPR_BEG)],
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[[2, 2], :on_tstring_content, "1\n", state(:EXPR_BEG)],
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[[3, 0], :on_ignored_sp, " ", state(:EXPR_BEG)],
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[[3, 2], :on_embexpr_beg, "\#{", state(:EXPR_BEG)],
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[[3, 4], :on_heredoc_beg, "<<~H2", state(:EXPR_BEG)],
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[[3, 9], :on_embexpr_end, "}", state(:EXPR_END)],
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[[3, 10], :on_tstring_content, "\n", state(:EXPR_BEG)],
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[[4, 0], :on_ignored_sp, " ", state(:EXPR_BEG)],
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[[4, 4], :on_tstring_content, "2\n", state(:EXPR_BEG)],
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[[5, 0], :on_heredoc_end, " H2\n", state(:EXPR_BEG)],
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[[6, 0], :on_ignored_sp, " ", state(:EXPR_BEG)],
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[[6, 2], :on_tstring_content, "3\n", state(:EXPR_BEG)],
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[[7, 0], :on_heredoc_end, "H1\n", state(:EXPR_BEG)],
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]
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assert_equal(code, Ripper.tokenize(code).join(""))
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assert_equal(expected, result = Ripper.lex(code),
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proc {expected.zip(result) {|e, r| break diff(e, r) unless e == r}})
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code = <<~'HEREDOC'
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<<-H1
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1
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#{<<~H2}
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2
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H2
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3
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H1
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HEREDOC
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expected = [
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[[1, 0], :on_heredoc_beg, "<<-H1", state(:EXPR_BEG)],
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[[1, 5], :on_nl, "\n", state(:EXPR_BEG)],
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[[2, 0], :on_tstring_content, " 1\n ", state(:EXPR_BEG)],
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[[3, 2], :on_embexpr_beg, "\#{", state(:EXPR_BEG)],
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[[3, 4], :on_heredoc_beg, "<<~H2", state(:EXPR_BEG)],
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[[3, 9], :on_embexpr_end, "}", state(:EXPR_END)],
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[[3, 10], :on_tstring_content, "\n", state(:EXPR_BEG)],
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[[4, 0], :on_ignored_sp, " ", state(:EXPR_BEG)],
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[[4, 4], :on_tstring_content, "2\n", state(:EXPR_BEG)],
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[[5, 0], :on_heredoc_end, " H2\n", state(:EXPR_BEG)],
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[[6, 0], :on_tstring_content, " 3\n", state(:EXPR_BEG)],
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[[7, 0], :on_heredoc_end, "H1\n", state(:EXPR_BEG)],
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]
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assert_equal(code, Ripper.tokenize(code).join(""))
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assert_equal(expected, result = Ripper.lex(code),
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proc {expected.zip(result) {|e, r| break diff(e, r) unless e == r}})
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end
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end
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