Add tests for String#lstrip and rstrip

* test/ruby/test_string.rb (test_rstrip, test_lstrip): Add tests
  for String#lstrip and rstrip.  The test cases are used from
  string.c ruby-doc comments.  [Fix GH-1174]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53328 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 6 insertions, 0 deletions

diff --git a/test/ruby/test_string.rb b/test/ruby/test_string.rb
index f907a28f99..96137e3de9 100644
--- a/test/ruby/test_string.rb
+++ b/test/ruby/test_string.rb
@@ -2137,10 +2137,16 @@ class TestString < Test::Unit::TestCase
   end
 
   def test_rstrip
+    assert_equal("  hello", "  hello  ".rstrip)
     assert_equal("\u3042", "\u3042   ".rstrip)
     assert_raise(Encoding::CompatibilityError) { "\u3042".encode("ISO-2022-JP").rstrip }
   end
 
+  def test_lstrip
+    assert_equal("hello  ", "  hello  ".lstrip)
+    assert_equal("\u3042", "   \u3042".lstrip)
+  end
+
 =begin
   def test_symbol_table_overflow
     assert_in_out_err([], <<-INPUT, [], /symbol table overflow \(symbol [a-z]{8}\) \(RuntimeError\)/)