1 files changed, 21 insertions, 13 deletions
diff --git a/mrbgems/mruby-symbol-ext/test/symbol.rb b/mrbgems/mruby-symbol-ext/test/symbol.rb
index 6070d1418..db686e5f4 100644
--- a/mrbgems/mruby-symbol-ext/test/symbol.rb
+++ b/mrbgems/mruby-symbol-ext/test/symbol.rb
@@ -1,19 +1,27 @@
+# coding: utf-8
 ##
 # Symbol(Ext) Test
 
-assert('Symbol#to_proc') do
-  assert_equal 5, :abs.to_proc[-5]
-end
-
-assert('Symbol.all_symbols') do
-  foo = [:__symbol_test_1, :__symbol_test_2, :__symbol_test_3].sort
-  symbols = Symbol.all_symbols.select{|sym|sym.to_s.include? '__symbol_test'}.sort
-  assert_equal foo, symbols
-end
-
-assert("Symbol#length") do
-  assert_equal 5, :hello.size
-  assert_equal 5, :mruby.length
+if Symbol.respond_to?(:all_symbols)
+  assert('Symbol.all_symbols') do
+    foo = [:__symbol_test_1, :__symbol_test_2, :__symbol_test_3].sort
+    symbols = Symbol.all_symbols.select{|sym|sym.to_s.include? '__symbol_test'}.sort
+    assert_equal foo, symbols
+  end
+end
+
+%w[size length].each do |n|
+  assert("Symbol##{n}") do
+    assert_equal 5, :hello.__send__(n)
+    assert_equal 4, :"aA\0b".__send__(n)
+    if __ENCODING__ == "UTF-8"
+      assert_equal 8, :"こんにちは世界!".__send__(n)
+      assert_equal 4, :"aあ\0b".__send__(n)
+    else
+      assert_equal 22, :"こんにちは世界!".__send__(n)
+      assert_equal 6, :"aあ\0b".__send__(n)
+    end
+  end
 end
 
 assert("Symbol#capitalize") do