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-rw-r--r--activerecord/test/cases/core_test.rb10
1 files changed, 6 insertions, 4 deletions
diff --git a/activerecord/test/cases/core_test.rb b/activerecord/test/cases/core_test.rb
index 3735572898..356afdbd2b 100644
--- a/activerecord/test/cases/core_test.rb
+++ b/activerecord/test/cases/core_test.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
require "cases/helper"
require "models/person"
require "models/topic"
@@ -35,7 +37,7 @@ class CoreTest < ActiveRecord::TestCase
def test_pretty_print_new
topic = Topic.new
- actual = ""
+ actual = "".dup
PP.pp(topic, StringIO.new(actual))
expected = <<-PRETTY.strip_heredoc
#<Topic:0xXXXXXX
@@ -64,7 +66,7 @@ class CoreTest < ActiveRecord::TestCase
def test_pretty_print_persisted
topic = topics(:first)
- actual = ""
+ actual = "".dup
PP.pp(topic, StringIO.new(actual))
expected = <<-PRETTY.strip_heredoc
#<Topic:0x\\w+
@@ -92,7 +94,7 @@ class CoreTest < ActiveRecord::TestCase
def test_pretty_print_uninitialized
topic = Topic.allocate
- actual = ""
+ actual = "".dup
PP.pp(topic, StringIO.new(actual))
expected = "#<Topic:XXXXXX not initialized>\n"
assert actual.start_with?(expected.split("XXXXXX").first)
@@ -105,7 +107,7 @@ class CoreTest < ActiveRecord::TestCase
"inspecting topic"
end
end
- actual = ""
+ actual = "".dup
PP.pp(subtopic.new, StringIO.new(actual))
assert_equal "inspecting topic\n", actual
end