Minitest::Retry

Re-run the test when the test fails.

Installation

Add this line to your application's Gemfile:

gem 'minitest-retry'

And then execute:

$ bundle

Or install it yourself as:

$ gem install minitest-retry

Usage

In your test_helper.rb file, add the following lines:

require 'minitest/retry'
Minitest::Retry.use!

Options can be specified to use! method. Can specify options are as follows:

Minitest::Retry.use!(
  retry_count:  3,         # The number of times to retry. The default is 3.
  verbose: true,           # Whether or not to display the message at the time of retry. The default is true.
  io: $stdout,             # Display destination of retry when the message. The default is stdout.
  exceptions_to_retry: [], # List of exceptions that will trigger a retry (when empty, all exceptions will).
  methods_to_retry:    [], # List of methods that will trigger a retry (when empty, all methods will).
  classes_to_retry:    []  # List of classes that will trigger a retry (when empty, all classes will).
)

Callbacks

The on_failure callback is executed each time a test fails:

Minitest::Retry.on_failure do |klass, test_name, result|
  # code omitted
end

The on_consistent_failure callback is executed when a test consistently fails:

Minitest::Retry.on_consistent_failure do |klass, test_name, result|
  # code omitted
end

The on_retry callback is executed each time a test is retried:

Minitest::Retry.on_retry do |klass, test_name, retry_count, result|
  # code omitted
end

Example

Minitest::Retry.use!

class Minitest::RetryTest < Minitest::Test
  def test_fail
    assert false, 'test fail'
  end
end

# Running:

[MinitestRetry] retry 'test_fail' count: 1,  msg: test fail
[MinitestRetry] retry 'test_fail' count: 2,  msg: test fail
[MinitestRetry] retry 'test_fail' count: 3,  msg: test fail
F

Finished in 0.002479s, 403.4698 runs/s, 403.4698 assertions/s.

  1) Failure:
Minitest::RetryTest#test_fail [test/minitest/sample_test.rb:6]:
test fail

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/y-yagi/minitest-retry.

License

The gem is available as open source under the terms of the MIT License.