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Add Rerun Only Failures With RSpec as a ruby til

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jbranchaud
2017-02-01 14:34:59 -06:00
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# Rerun Only Failures With RSpec
After running a big test suite, I may have a bunch of output on the screen
including the results of a couple test failures. I like to bring the context
of the test failures front and center and make sure they are consistent test
failures (not flickering failures). Instead of copying and pasting each
failure, I can rerun `rspec` in a way that executes on the test cases that
failed.
```
$ rspec --only-failures
```
This feature requires that you set a file for RSpec to persist some state
between runs. Do this in the `spec/spec_helper.rb` file. For example:
```ruby
RSpec.configure do |config|
config.example_status_persistence_file_path = "spec/examples.txt"
end
```
See more details
[here](https://relishapp.com/rspec/rspec-core/docs/command-line/only-failures).
h/t Brian Dunn