Make assertions about memory usage.
Add this line to your application's Gemfile:
gem 'rspec-memory'And then execute:
$ bundle
Or install it yourself as:
$ gem install rspec-memory
Finally, add this require statement to the top of spec/spec_helper.rb
require 'rspec/memory'Allocating large amounts of objects can lead to memory problems. RSpec::Memory adds a limit_allocations matcher, which tracks the number of allocations and memory size for each object type and allows you to specify expected limits.
RSpec.describe "memory allocations" do
include_context RSpec::Memory
it "limits allocation counts" do
expect do
6.times{String.new}
end.to limit_allocations(String => 10) # 10 strings can be allocated
end
it "limits allocation counts (hash)" do
expect do
6.times{String.new}
end.to limit_allocations(String => {count: 10}) # 10 strings can be allocated
end
it "limits allocation size" do
expect do
6.times{String.new("foo")}
end.to limit_allocations(String => {size: 1024}) # 1 KB of strings can be allocated
end
end- Fork it
- Create your feature branch (
git checkout -b my-new-feature) - Commit your changes (
git commit -am 'Add some feature') - Push to the branch (
git push origin my-new-feature) - Create new Pull Request
Released under the MIT license.
Copyright, 2017, by Samuel G. D. Williams.
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
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