add benchmark for Symbol

test/Benchmark/app/benchmark.rb

@@ -25,6 +25,9 @@ autorelease_pool { bm_range }
 puts "*** String ***"
 autorelease_pool { bm_string }
 
+puts "*** Symbol ***"
+autorelease_pool { bm_symbol }
+
 puts "*** Time ***"
 autorelease_pool { bm_time }
 

test/Benchmark/app/benchmark/string.rb

@@ -14,6 +14,7 @@ def bm_string
     string_split(x)
     string_to_f(x)
     string_to_i(x)
+    string_to_sym(x)
   end
 end
 

test/Benchmark/app/benchmark/string/to_sym.rb

@@ -0,0 +1,9 @@
+def string_to_sym(x)
+  string = "x" * 30
+
+  x.report "to_sym" do
+    1000000.times do
+      string.to_sym
+    end
+  end
+end

test/Benchmark/app/benchmark/symbol.rb

@@ -0,0 +1,5 @@
+def bm_symbol
+  Benchmark.benchmark("", 30, "%r\n") do |x|
+    symbol_to_s(x)
+  end
+end

test/Benchmark/app/benchmark/symbol/to_s.rb

@@ -0,0 +1,9 @@
+def symbol_to_s(x)
+  symbol = :"hello world"
+
+  x.report "to_s" do
+    1000000.times do
+      symbol.to_s
+    end
+  end
+end