minitest
Ruby Tests Profiling Toolbox
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minitest | Ruby Tests Profiling Toolbox | |
---|---|---|
10 | 7 | |
3,242 | 1,793 | |
0.6% | 1.2% | |
8.0 | 7.5 | |
13 days ago | 6 days ago | |
Ruby | Ruby | |
MIT License | MIT License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
minitest
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Test Driving a Rails API - Part Two
In this part, we’ll set up our testing environment so that we can test our Rails API using minitest with minitest/spec. We’ll look at the differences between traditional style unit tests and spec-style tests, or specs. I’ll demonstrate why you should use minitest-rails. We’ll look at using rack-test for testing our API. We’ll even create our own generator to generate API specs.
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Where can I learn to deliver a proper solution?
I forgot to mention that reading code is also a good way to learn how to write code, it's like inspiration. Check repos of some gems you like. For example sidekiq https://github.com/sidekiq/sidekiq/tree/main/lib/sidekiq Or minitest https://github.com/minitest/minitest/tree/master/lib/minitest
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I_suck_and_my_tests_are_order_dependent
All through GitHub.
1. From https://github.com/rails/rails/blob/6ffb29d24e05abbd9ffe3ea9..., click "Blame" on the header bar over the file contents.
2. Scroll down to the line and click on the commit in the left column.
3. Scroll down to the file that removed the line from its previous file, activesupport/lib/active_support/test_case.rb.
4. Click the three-dots menu in that file's header bar and select "View file".
5. Click "History" in the header bar of the contributors, above the file contents.
6. I guessed here at commit 281f488 on its message: "Use the method provided by minitest to make tests order dependent". There's a comment here that identified the problem which led to, and provided context for, the change in 6ffb29d.
The OP is from minitest's documentation, so to find the introduction in minitest, it's basically the same process.
1. Go to https://github.com/minitest/minitest.
2. Search the repo for the method name. Even just "i_suck" will match the commit.
3. Select the oldest commit in the results. That's a4553e2.
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Minitest, we've been doing it wrong?
The new test convention is now "test/**/test_*.rb" instead of "test/**/*_test.rb". For example, Puma and Minitest are popular repositories using this naming pattern.
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Ask HN: Codebases with great, easy to read code?
https://github.com/seattlerb/minitest really removed the FUD for me when i started learning Ruby and Rails. Its full of metaprogramming and fancy tricks but is also quite small, practical and informal in its style.
e.g. "assert_equal" is really just "expected == actual" at it's core but it uses both both a block param (a kind of closure) for composing a default message and calls "diff" which is a dumb wrapper around the system "diff" utility (horrors!). There is even some evolved nastiness in there for an API change that uses the existing assert/refute logic to raise an informative message. this is handled with a simple if and not some sort of complex hard-to-follow factory pattern or dependency injection misuse.
https://github.com/seattlerb/minitest/blob/master/lib/minite...
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49 Days of Ruby: Day 46 -- Testing Frameworks: Minitest
Those are just a few examples of what you can do with Minitest! Check out their README on GitHub and keep on exploring.
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Ruby through the lens of Go
One of the things I love the most about Ruby is that it tends to coalesce around one or two really popular libraries. Rails is the big one obviously, but over time you see libraries designed for a particular purpose "winning" over other things. This includes things like linting/code analysis (Rubocop), authentication (Devise), testing (RSpec and Minitest) and more. The emphasis is on making something good great rather than making a lot of different good things.
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Best way to learn testing in RSpec?
Then try minitest (unit and spec verisons) https://github.com/seattlerb/minitest
Ruby Tests Profiling Toolbox
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Must-have gems for mature Rails
gem "test-prof" - https://github.com/test-prof/test-prof | Toolkit for inspecting and optimising your test-suite, a must-have.
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Measuring load time on fixtures
You might be able to do something with https://test-prof.evilmartians.io, but I'm not sure it has anything specific to fixtures out of the box. Maybe using the event profiler on sql.active_record events would be close enough. In the limit, you could wire together your own ActiveSupport::Notifications.instrument around the relevant blocks + an ActiveSupport::Notifications.subscribe to that event so as to log the relevant information. Docs: https://api.rubyonrails.org/classes/ActiveSupport/Notifications.html
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How to optimize factory creation.
To have a better vision of what objects are created in our spec file we can use test-prof, a powerful gem that provides a collection of different tools to analyse your test suite performance. One of this tool is really useful to identify a factory cascade, let’s introduce factory profiler.
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A Trick For Reading Flamegraphs
TestProf can be used to get flamegraphs for Ruby test suites.
- How to improve a test suit made with Rspec, Capybara, FactoryBot and Siteprism
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Does pytest break a lot of coding rules?
Rspec has spec_helper.rb.
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Learning resources to broaden the knowledge
I also love the test-prof documentation, there's a lot of good ideas on how to improve test performance.
What are some alternatives?
Test::Unit - test-unit
DuckRails - Development tool to mock API endpoints quickly and easily (docker image available)
RSpec - RSpec meta-gem that depends on the other components
Spinach - Spinach is a BDD framework on top of Gherkin.
Cucumber - A home for issues that are common to multiple cucumber repositories
timecop - A gem providing "time travel", "time freezing", and "time acceleration" capabilities, making it simple to test time-dependent code. It provides a unified method to mock Time.now, Date.today, and DateTime.now in a single call.
Pundit Matchers - A set of RSpec matchers for testing Pundit authorisation policies.
factory_bot - A library for setting up Ruby objects as test data.
shoulda-matchers - Simple one-liner tests for common Rails functionality
faker - A library for generating fake data such as names, addresses, and phone numbers.
Aruba - Test command-line applications with Cucumber-Ruby, RSpec or Minitest.
Watir - Watir Powered By Selenium