Share TestObject::ToStrCounter class

Author: nobu

test/ruby/test_object.rb

@@ -280,6 +280,12 @@ def test_methods_prepend_singleton
     assert_equal([:foo], k.private_methods(false))
   end
 
+  class ToStrCounter
+    def initialize(str = "@foo") @str = str; @count = 0; end
+    def to_str; @count += 1; @str; end
+    def count; @count; end
+  end
+
   def test_instance_variable_get
     o = Object.new
     o.instance_eval { @foo = :foo }
@@ -291,9 +297,7 @@ def test_instance_variable_get
     assert_raise(NameError) { o.instance_variable_get("bar") }
     assert_raise(TypeError) { o.instance_variable_get(1) }
 
-    n = Object.new
-    def n.to_str; @count = defined?(@count) ? @count + 1 : 1; "@foo"; end
-    def n.count; @count; end
+    n = ToStrCounter.new
     assert_equal(:foo, o.instance_variable_get(n))
     assert_equal(1, n.count)
   end
@@ -308,9 +312,7 @@ def test_instance_variable_set
     assert_raise(NameError) { o.instance_variable_set("bar", 1) }
     assert_raise(TypeError) { o.instance_variable_set(1, 1) }
 
-    n = Object.new
-    def n.to_str; @count = defined?(@count) ? @count + 1 : 1; "@foo"; end
-    def n.count; @count; end
+    n = ToStrCounter.new
     o.instance_variable_set(n, :bar)
     assert_equal(:bar, o.instance_eval { @foo })
     assert_equal(1, n.count)
@@ -327,9 +329,7 @@ def test_instance_variable_defined
     assert_raise(NameError) { o.instance_variable_defined?("bar") }
     assert_raise(TypeError) { o.instance_variable_defined?(1) }
 
-    n = Object.new
-    def n.to_str; @count = defined?(@count) ? @count + 1 : 1; "@foo"; end
-    def n.count; @count; end
+    n = ToStrCounter.new
     assert_equal(true, o.instance_variable_defined?(n))
     assert_equal(1, n.count)
   end