From 5856b4252ef227f58a0c3021ec703b3b5892f3f5 Mon Sep 17 00:00:00 2001
From: headius <headius@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 26 Sep 2016 21:12:12 +0000
Subject: * test/ripper/test_ripper.rb: add a test for dedent_string.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56260 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 test/ripper/test_ripper.rb | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/test/ripper/test_ripper.rb b/test/ripper/test_ripper.rb
index afe7183ff4..cbd025d2ad 100644
--- a/test/ripper/test_ripper.rb
+++ b/test/ripper/test_ripper.rb
@@ -98,4 +98,23 @@ class TestRipper::Ripper < Test::Unit::TestCase
       assert_nil(Ripper.sexp(src), bug12651)
     end;
   end
+
+  # https://bugs.jruby.org/4176
+  def test_dedent_string
+    col = Ripper.dedent_string '  hello', 0
+    assert_equal 0, col
+    col = Ripper.dedent_string '  hello', 2
+    assert_equal 2, col
+    col = Ripper.dedent_string '  hello', 4
+    assert_equal 2, col
+
+    # lexing a squiggly heredoc triggers Ripper#dedent_string use
+    src = <<-END
+puts <<~END
+  hello
+end
+    END
+
+    assert_nothing_raised { Ripper.lex src }
+  end
 end if ripper_test
-- 
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