Class: Mutant::Integration::Rspec

Inherits:
Mutant::Integration show all
Defined in:
lib/mutant/integration/rspec.rb

Overview

Rspec integration

This looks so complicated, because rspec:

  • Keeps its state global in RSpec.world and lots of other places

  • There is no API to “just run a subset of examples”, the examples need to be selected in-place via mutating the ‘RSpec.filtered_examples` datastructure

  • Does not maintain a unique identification for an example, aside the instances of ‘RSpec::Core::Example` objects itself. For that reason identifying examples by:

    • full description

    • location

    Is NOT enough. It would not be unique. So we add an “example index” for unique reference.

Constant Summary collapse

ALL_EXPRESSION = 
Expression::Namespace::Recursive.new(scope_name: nil)
EXPRESSION_CANDIDATE = 
/\A([^ ]+)(?: )?/.freeze
LOCATION_DELIMITER = 
':'.freeze
EXIT_SUCCESS = 
0
CLI_OPTIONS = 
IceNine.deep_freeze(%w[spec --fail-fast])

Instance Method Summary collapse

Constructor Details

#initialize ⇒ undefined

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Initialize rspec integration



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# File 'lib/mutant/integration/rspec.rb', line 37

def initialize(*)
  super
  @output = StringIO.new
  @runner = RSpec::Core::Runner.new(RSpec::Core::ConfigurationOptions.new(CLI_OPTIONS))
  @world  = RSpec.world
end

Instance Method Details

#all_tests ⇒ Enumerable<Test>

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Available tests

Returns:

  • (Enumerable<Test>) 


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# File 'lib/mutant/integration/rspec.rb', line 83

def all_tests
  all_tests_index.keys
end

#call(tests) ⇒ Result::Test

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Run a collection of tests

rubocop:disable MethodLength

Parameters:

  • tests (Enumerable<Mutant::Test>)

Returns:

  • (Result::Test) 


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# File 'lib/mutant/integration/rspec.rb', line 64

def call(tests)
  examples = tests.map(&all_tests_index.method(:fetch))
  filter_examples(&examples.method(:include?))
  start = Time.now
  passed = @runner.run_specs(@world.ordered_example_groups).equal?(EXIT_SUCCESS)
  @output.rewind
  Result::Test.new(
    tests:    tests,
    output:   @output.read,
    runtime:  Time.now - start,
    passed:   passed
  )
end

#setup ⇒ self

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Setup rspec integration

Returns:

  • (self) 


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# File 'lib/mutant/integration/rspec.rb', line 49

def setup
  @runner.setup($stderr, @output)
  self
end