nobu	2017-07-18 19:29:19 +0900 (Tue, 18 Jul 2017)

  New Revision: 59360

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=59360

  Log:
    descriptive asssertions
    
    * test/ruby/test_string.rb (test_uplus_minus): prefer more
      descriptive asssertions than assert_equal.

  Modified files:
    trunk/test/ruby/test_string.rb
Index: test/ruby/test_string.rb
===================================================================
--- test/ruby/test_string.rb	(revision 59359)
+++ test/ruby/test_string.rb	(revision 59360)
@@ -2735,20 +2735,20 @@ CODE https://github.com/ruby/ruby/blob/trunk/test/ruby/test_string.rb#L2735
 
   def test_uplus_minus
     str = "foo"
-    assert_equal(false, str.frozen?)
-    assert_equal(false, (+str).frozen?)
-    assert_equal(true,  (-str).frozen?)
+    assert_not_predicate(str, :frozen?)
+    assert_not_predicate(+str, :frozen?)
+    assert_predicate(-str, :frozen?)
 
-    assert_equal(str.object_id, (+str).object_id)
-    assert_not_equal(str.object_id, (-str).object_id)
+    assert_same(str, +str)
+    assert_not_send(str, -str)
 
     str = "bar".freeze
-    assert_equal(true,  str.frozen?)
-    assert_equal(false, (+str).frozen?)
-    assert_equal(true,  (-str).frozen?)
+    assert_predicate(str, :frozen?)
+    assert_not_predicate(+str, :frozen?)
+    assert_predicate(-str, :frozen?)
 
-    assert_not_equal(str.object_id, (+str).object_id)
-    assert_equal(str.object_id, (-str).object_id)
+    assert_not_same(str, +str)
+    assert_same(str, -str)
 
     return unless @cls == String
     bar = %w(b a r).join('')

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