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How to use process_env method of Minitest Package

Best Minitest_ruby code snippet using Minitest.process_env

test_task.rb

Source:test_task.rb

...34    # optional block to customize variables.35    def self.create name = :test, &block36      task = new name37      task.instance_eval(&block) if block38      task.process_env39      task.define40      task41    end42    ##43    # Extra arguments to pass to the tests. Defaults empty but gets44    # populated by a number of enviroment variables:45    #46    # N (-n flag) :: a string or regexp of tests to run.47    # X (-e flag) :: a string or regexp of tests to exclude.48    # A (arg)     :: quick way to inject an arbitrary argument (eg A=--help).49    #50    # See #process_env51    attr_accessor :extra_args52    ##53    # The code to load the framework. Defaults to requiring54    # minitest/autorun...55    #56    # Why do I have this as an option?57    attr_accessor :framework58    ##59    # Extra library directories to include. Defaults to %w[lib test60    # .]. Also uses $MT_LIB_EXTRAS allowing you to dynamically61    # override/inject directories for custom runs.62    attr_accessor :libs63    ##64    # The name of the task and base name for the other tasks generated.65    attr_accessor :name66    ##67    # File globs to find test files. Defaults to something sensible to68    # find test files under the test directory.69    attr_accessor :test_globs70    ##71    # Turn on ruby warnings (-w flag). Defaults to true.72    attr_accessor :warning73    ##74    # Optional: Additional ruby to run before the test framework is loaded.75    attr_accessor :test_prelude76    ##77    # Print out commands as they run. Defaults to Rake's +trace+ (-t78    # flag) option.79    attr_accessor :verbose80    ##81    # Use TestTask.create instead.82    def initialize name = :test # :nodoc:83      self.extra_args   = []84      self.framework    = %(require "minitest/autorun")85      self.libs         = %w[lib test .]86      self.name         = name87      self.test_globs   = ["test/**/test_*.rb",88                           "test/**/*_test.rb"]89      self.test_prelude = nil90      self.verbose      = Rake.application.options.trace91      self.warning      = true92    end93    ##94    # Extract variables from the environment and convert them to95    # command line arguments. See #extra_args.96    #97    # Environment Variables:98    #99    # MT_LIB_EXTRAS :: Extra libs to dynamically override/inject for custom runs.100    # N             :: Tests to run (string or /regexp/).101    # X             :: Tests to exclude (string or /regexp/).102    # A             :: Any extra arguments. Honors shell quoting.103    #104    # Deprecated:105    #106    # TESTOPTS      :: For argument passing, use +A+.107    # N             :: For parallel testing, use +MT_CPU+.108    # FILTER        :: Same as +TESTOPTS+.109    def process_env110      warn "TESTOPTS is deprecated in Minitest::TestTask. Use A instead" if111        ENV["TESTOPTS"]112      warn "FILTER is deprecated in Minitest::TestTask. Use A instead" if113        ENV["FILTER"]114      warn "N is deprecated in Minitest::TestTask. Use MT_CPU instead" if115        ENV["N"] && ENV["N"].to_i > 0116      lib_extras = (ENV["MT_LIB_EXTRAS"] || "").split File::PATH_SEPARATOR117      self.libs[0,0] = lib_extras118      extra_args << "-n" << ENV["N"]                      if ENV["N"]119      extra_args << "-e" << ENV["X"]                      if ENV["X"]120      extra_args.concat Shellwords.split(ENV["TESTOPTS"]) if ENV["TESTOPTS"]121      extra_args.concat Shellwords.split(ENV["FILTER"])   if ENV["FILTER"]122      extra_args.concat Shellwords.split(ENV["A"])        if ENV["A"]123      ENV.delete "N" if ENV["N"]...

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