avoid method redefinition.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@26663 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/ruby/enc/test_utf16.rb

@@ -369,7 +369,7 @@ EOT
     assert(r =~ s, "#{encdump(r)} =~ #{encdump(s)}")
   end
 
-  def test_casecmp
+  def test_casecmp2
     assert_equal(0, "\0A".force_encoding("UTF-16BE").casecmp("\0a".force_encoding("UTF-16BE")))
     assert_not_equal(0, "\0A".force_encoding("UTF-16LE").casecmp("\0a".force_encoding("UTF-16LE")))
     assert_not_equal(0, "A\0".force_encoding("UTF-16BE").casecmp("a\0".force_encoding("UTF-16BE")))

test/ruby/test_econv.rb

@@ -886,7 +886,7 @@ class TestEncodingConverter < Test::Unit::TestCase
                  Encoding::Converter.search_convpath("ISO-8859-1", "UTF-32BE", universal_newline: true))
   end
 
-  def test_invalid_replace
+  def test_invalid_replace2
     assert_raise(ArgumentError) {
       broken = "\x80".force_encoding("euc-jp")
       "".encode("euc-jp", :undef => :replace, :replace => broken)

test/ruby/test_hash.rb

@@ -376,7 +376,7 @@ class TestHash < Test::Unit::TestCase
     assert_equal('nil', @h.fetch(nil))
   end
 
-  def test_key?
+  def test_key2?
     assert(!@cls[].key?(1))
     assert(!@cls[].key?(nil))
     assert(@h.key?(nil))
@@ -648,7 +648,7 @@ class TestHash < Test::Unit::TestCase
     assert_equal(hb, h2)
   end
 
-  def test_value?
+  def test_value2?
     assert(!@cls[].value?(1))
     assert(!@cls[].value?(nil))
     assert(@h.value?(nil))

test/ruby/test_proc.rb

@@ -620,7 +620,7 @@ class TestProc < Test::Unit::TestCase
     assert_equal [1, 2, 3, 4, 5, 6, Proc, :x], (pr.call(1, 2, 3, 4, 5, 6, 7){|x| x})
   end
 
-  def test_proc_args_opt_and_block
+  def test_proc_args_opt_and_block2
     pr = proc {|a,b,c=:c,d=:d,*e,&f|
       [a, b, c, d, e, f.class, f&&f.call(:x)]
     }

test/strscan/test_stringscanner.rb

@@ -685,7 +685,7 @@ class TestStringScanner < Test::Unit::TestCase
     s.scan(/ string/)
   end
 
-  def test_inspect
+  def test_inspect2
     s = StringScanner.new('test string test')
     s.scan(/test strin/)
     assert_equal('#<StringScanner 10/16 "...strin" @ "g tes...">', s.inspect)

test/zlib/test_zlib.rb

@@ -535,7 +535,7 @@ if defined? Zlib
       assert_equal("foobar".each_byte.to_a, a)
     end
 
-    def test_gets
+    def test_gets2
       t = Tempfile.new("test_zlib_gzip_reader")
       t.close
       Zlib::GzipWriter.open(t.path) {|gz| gz.print("foo\nbar\nbaz\n") }