1.mbj / mutant
Mutation testing for Ruby. AI writes your code. AI writes your tests. But who tests the tests?
- mutation-testing
- ruby
- coverage
- rspec
- minitest
- code-review
- +4 more
+83 stars
from 2,130 · score 4.43
Trending repositories
Ranked by Attention Score: stars gained over the last 180 complete days
27 repositories by Attention Score · May 7, 2026 – Nov 2, 2026 (UTC)
2.simplecov-ruby / simplecov
Code coverage for Ruby with a powerful configuration library and automatic merging of coverage across test suites
- ruby
- test-coverage
- code-quality
- rails
- coverage
- coverage-report
- +1 more
+56 stars
from 4,871 · score 4.04
+52 stars
from 10,122 · score 3.97
4.thoughtbot / factory_bot
A library for setting up Ruby objects as test data.
- factory-girl
- ruby
- thoughtbot
- rubygems
- testing
- fixtures
- +3 more
+39 stars
from 8,128 · score 3.69
5.tilo / smarter_csv
Fastest end-to-end CSV ingestion for Ruby (with C acceleration). SmarterCSV auto-detects formats, applies smart defaults, and returns Rails-ready hashes for seamless use with ActiveRecord, Sidekiq, parallel jobs, and S3 pipelines — even for messy user-uploaded real-world data.
- csv
- csv-converter
- csv-export
- csv-file
- csv-files
- csv-format
- +11 more
+37 stars
from 1,515 · score 3.64
6.rubycdp / cuprite
Headless Chrome/Chromium driver for Capybara
+36 stars
from 1,362 · score 3.61
7.grosser / parallel_tests
Ruby: 2 CPUs = 2x Testing Speed for RSpec, Test::Unit and Cucumber
+32 stars
from 3,495 · score 3.50
8.minitest / minitest
minitest provides a complete suite of testing facilities supporting TDD, BDD, and benchmarking.
+32 stars
from 3,384 · score 3.50
+31 stars
from 482 · score 3.47
10.test-prof / test-prof
Ruby Tests Profiling Toolbox
+25 stars
from 2,027 · score 3.26
11.thoughtbot / shoulda-matchers
Simple one-liner tests for common Rails functionality
+21 stars
from 3,559 · score 3.09
12.travisjeffery / 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.
+20 stars
from 3,405 · score 3.04
13.rubocop / rubocop-rspec
Code style checking for RSpec files.
- ruby
- rubocop
- lint
- testing
- static-analysis
- rspec
+19 stars
from 841 · score 3.00
14.ruby / typeprof
An experimental type-level Ruby interpreter for testing and understanding Ruby code
+14 stars
from 820 · score 2.71
15.stelligent / cfn_nag
Linting tool for CloudFormation templates
- continuous-testing
- unit-testing
- cloudformation
- aws
- devops
- iam-rules
- +14 more
+13 stars
from 1,299 · score 2.64
16.DatabaseCleaner / database_cleaner
Strategies for cleaning databases in Ruby. Can be used to ensure a clean state for testing.
- testing
- ruby
- database-cleaner
- testing-tools
+11 stars
from 2,955 · score 2.48
17.avmnu-sng / rspec-tracer
RSpec Tracer is a specs dependency analyzer, flaky tests detector, tests accelerator, and coverage reporter tool.
+9 stars
from 168 · score 2.30
18.freerange / mocha
A mocking and stubbing library for Ruby
+6 stars
from 1,277 · score 1.95
19.cucumber / aruba
Test command-line applications with Cucumber-Ruby, RSpec or Minitest.
+6 stars
from 960 · score 1.95
20.thoughtbot / appraisal
A Ruby library for testing your library against different versions of dependencies.
- ruby
- thoughtbot
- appraisal
- rubygems
- testing
- gemfile
+5 stars
from 1,319 · score 1.79
21.KnapsackPro / knapsack
Knapsack splits tests evenly across parallel CI nodes to run fast CI build and save you time.
- ruby
- rspec
- cucumber
- minitest
- spinach
- turnip
- +9 more
+5 stars
from 545 · score 1.79
+5 stars
from 217 · score 1.79
23.TheAcmada / gwirian
A modern test scenario management platform for QA engineers and managers. Create, organize, and track test scenarios with a modern BDD approach.
- quality-assurance
- testing
+3 stars
from 1 · score 1.39
+2 stars
from 1,543 · score 1.10
+2 stars
from 959 · score 1.10
26.iridakos / duckrailsArchived
Development tool to mock API endpoints quickly and easily - NOT MAINTAINED
- mock
- developer-tools
- developers
- api
- api-server
- apis
- +4 more
+1 stars
from 1,707 · score 0.69
+1 stars
from 58 · score 0.69