test_integer.rb: common parts

* test/ruby/test_integer.rb (MimicInteger, CoercionToInt): extract
  common parts.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56540 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/ruby/test_integer.rb

@@ -274,39 +274,31 @@ class TestInteger < Test::Unit::TestCase
     assert_int_equal(-1111_1111_1111_1111_1111_1111_1111_1110, (-1111_1111_1111_1111_1111_1111_1111_1111).truncate(-1))
   end
 
-  def test_bitwise_and_with_integer_mimic_object
-    def (obj = Object.new).to_int
-      10
+  MimicInteger = Struct.new(:to_int)
+  module CoercionToInt
+    def coerce(other)
+      [other, to_int]
     end
-    assert_raise(TypeError, '[ruby-core:39491]') { 3 & obj }
+  end
 
-    def obj.coerce(other)
-      [other, 10]
-    end
+  def test_bitwise_and_with_integer_mimic_object
+    obj = MimicInteger.new(10)
+    assert_raise(TypeError, '[ruby-core:39491]') { 3 & obj }
+    obj.extend(CoercionToInt)
     assert_equal(3 & 10, 3 & obj)
   end
 
   def test_bitwise_or_with_integer_mimic_object
-    def (obj = Object.new).to_int
-      10
-    end
+    obj = MimicInteger.new(10)
     assert_raise(TypeError, '[ruby-core:39491]') { 3 | obj }
-
-    def obj.coerce(other)
-      [other, 10]
-    end
+    obj.extend(CoercionToInt)
     assert_equal(3 | 10, 3 | obj)
   end
 
   def test_bitwise_xor_with_integer_mimic_object
-    def (obj = Object.new).to_int
-      10
-    end
+    obj = MimicInteger.new(10)
     assert_raise(TypeError, '[ruby-core:39491]') { 3 ^ obj }
-
-    def obj.coerce(other)
-      [other, 10]
-    end
+    obj.extend(CoercionToInt)
     assert_equal(3 ^ 10, 3 ^ obj)
   end