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rails--rails/activerecord/test/cases/binary_test.rb
yuuji.yaginuma 1b86d90136 Enable Performance/UnfreezeString cop
In Ruby 2.3 or later, `String#+@` is available and `+@` is faster than `dup`.

```ruby
# frozen_string_literal: true

require "bundler/inline"

gemfile(true) do
  source "https://rubygems.org"

  gem "benchmark-ips"
end

Benchmark.ips do |x|
  x.report('+@') { +"" }
  x.report('dup') { "".dup }
  x.compare!
end
```

```
$ ruby -v benchmark.rb
ruby 2.5.1p57 (2018-03-29 revision 63029) [x86_64-linux]
Warming up --------------------------------------
                  +@   282.289k i/100ms
                 dup   187.638k i/100ms
Calculating -------------------------------------
                  +@      6.775M (± 3.6%) i/s -     33.875M in   5.006253s
                 dup      3.320M (± 2.2%) i/s -     16.700M in   5.032125s

Comparison:
                  +@:  6775299.3 i/s
                 dup:  3320400.7 i/s - 2.04x  slower

```
2018-09-23 08:56:55 +09:00

46 lines
1.2 KiB
Ruby

# frozen_string_literal: true
require "cases/helper"
# Without using prepared statements, it makes no sense to test
# BLOB data with DB2, because the length of a statement
# is limited to 32KB.
unless current_adapter?(:DB2Adapter)
require "models/binary"
class BinaryTest < ActiveRecord::TestCase
FIXTURES = %w(flowers.jpg example.log test.txt)
def test_mixed_encoding
str = +"\x80"
str.force_encoding("ASCII-8BIT")
binary = Binary.new name: "いただきます!", data: str
binary.save!
binary.reload
assert_equal str, binary.data
name = binary.name
assert_equal "いただきます!", name
end
def test_load_save
Binary.delete_all
FIXTURES.each do |filename|
data = File.read(ASSETS_ROOT + "/#{filename}")
data.force_encoding("ASCII-8BIT")
data.freeze
bin = Binary.new(data: data)
assert_equal data, bin.data, "Newly assigned data differs from original"
bin.save!
assert_equal data, bin.data, "Data differs from original after save"
assert_equal data, bin.reload.data, "Reloaded data differs from original"
end
end
end
end