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# frozen_string_literal: true
begin
require 'ripper'
require 'test/unit'
ripper_test = true
module TestRipper; end
rescue LoadError
end
class TestRipper::Lexer < Test::Unit::TestCase
def test_nested_dedent_heredoc
bug = '[ruby-core:80977] [Bug #13536]'
str = <<~'E'
<<~"D"
#{
<<~"B"
this must be a valid ruby
B
}
D
E
assert_equal(str, Ripper.tokenize(str).join(""), bug)
str = <<~'E'
<<~"D"
#{
<<~"B"
this must be a valid ruby
B
}
D
E
assert_equal(str, Ripper.tokenize(str).join(""), bug)
end
def test_embedded_expr_in_heredoc
src = <<~'E'
<<~B
#{1}
B
E
expect = %I[
on_heredoc_beg
on_nl
on_ignored_sp
on_embexpr_beg
on_int
on_embexpr_end
on_tstring_content
on_heredoc_end
]
assert_equal expect, Ripper.lex(src).map {|e| e[1]}
end
def test_space_after_expr_in_heredoc
src = <<~'E'
<<~B
#{1} a
B
E
expect = %I[
on_heredoc_beg
on_nl
on_ignored_sp
on_embexpr_beg
on_int
on_embexpr_end
on_tstring_content
on_heredoc_end
]
assert_equal expect, Ripper.lex(src).map {|e| e[1]}
end
def test_expr_at_beginning_in_heredoc
src = <<~'E'
<<~B
a
#{1}
B
E
expect = %I[
on_heredoc_beg
on_nl
on_tstring_content
on_embexpr_beg
on_int
on_embexpr_end
on_tstring_content
on_heredoc_end
]
assert_equal expect, Ripper.lex(src).map {|e| e[1]}
end
def test_slice
assert_equal "string\#{nil}\n",
Ripper.slice(%(<<HERE\nstring\#{nil}\nHERE), "heredoc_beg .*? nl $(.*?) heredoc_end", 1)
end
end
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