Make `test_initialize_with_invalid_attribute` work correctly

Originally specified attributes were only normal values, and
`ActiveRecord::MultiparameterAssignmentErrors` did not occur.

In addition, an assertion is performed only on rescue, even if an
exception does not occur, the test passes. To avoid this use `assert_raise`.

activerecord/test/cases/base_test.rb

@@ -282,11 +282,13 @@ def test_initialize_with_attributes
   end
 
   def test_initialize_with_invalid_attribute
-    Topic.new("title" => "test",
-      "last_read(1i)" => "2005", "last_read(2i)" => "2", "last_read(3i)" => "31")
-  rescue ActiveRecord::MultiparameterAssignmentErrors => ex
+    ex = assert_raise(ActiveRecord::MultiparameterAssignmentErrors) do
+      Topic.new("title" => "test",
+        "written_on(4i)" => "16", "written_on(5i)" => "24", "written_on(6i)" => "00")
+    end
+
     assert_equal(1, ex.errors.size)
-    assert_equal("last_read", ex.errors[0].attribute)
+    assert_equal("written_on", ex.errors[0].attribute)
   end
 
   def test_create_after_initialize_without_block