From 2eb5e09ea5115ecba93efa38b0662eb28d657c1d Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 28 Dec 2015 05:56:00 +0000
Subject: Add test for String#rstrip!

* test/ruby/test_string.rb (TestString#test_rstrip_bang): Add test
  for String#rstrip!.  [Fix GH-1176]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53354 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 test/ruby/test_string.rb | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

(limited to 'test')

diff --git a/test/ruby/test_string.rb b/test/ruby/test_string.rb
index 778a817fdc..00e1f5f8ff 100644
--- a/test/ruby/test_string.rb
+++ b/test/ruby/test_string.rb
@@ -2142,6 +2142,22 @@ class TestString < Test::Unit::TestCase
     assert_raise(Encoding::CompatibilityError) { "\u3042".encode("ISO-2022-JP").rstrip }
   end
 
+  def test_rstrip_bang
+    s1 = S("  hello  ")
+    assert_equal("  hello", s1.rstrip!)
+    assert_equal("  hello", s1)
+
+    s2 = S("\u3042  ")
+    assert_equal("\u3042", s2.rstrip!)
+    assert_equal("\u3042", s2)
+
+    s3 = S("  \u3042")
+    assert_equal(nil, s3.rstrip!)
+    assert_equal("  \u3042", s3)
+
+    assert_raise(Encoding::CompatibilityError) { "\u3042".encode("ISO-2022-JP").rstrip! }
+  end
+
   def test_lstrip
     assert_equal("hello  ", "  hello  ".lstrip)
     assert_equal("\u3042", "   \u3042".lstrip)
-- 
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