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require 'optparse'
require 'minitest/unit'
module Rails
# Handles all logic behind +rails test+ command.
class TestRunner
class << self
# Creates a new +TestRunner+ object with an array of test files to run
# based on the arguments. When no arguments are provided, it runs all test
# files. When a suite argument is provided, it runs only the test files in
# that suite. Otherwise, it runs the specified test file(s).
def start(files, options = {})
original_fixtures_options = options.delete(:fixtures)
options[:fixtures] = true
case files.first
when nil
new(Dir['test/**/*_test.rb'], options).run
when 'models'
new(Dir['test/models/**/*_test.rb'], options).run
when 'helpers'
new(Dir['test/helpers/**/*_test.rb'], options).run
when 'units'
new(Dir['test/{models,helpers,unit}/**/*_test.rb'], options).run
when 'controllers'
new(Dir['test/controllers/**/*_test.rb'], options).run
when 'mailers'
new(Dir['test/mailers/**/*_test.rb'], options).run
when 'functionals'
new(Dir['test/{controllers,mailers,functional}/**/*_test.rb'], options).run
when 'integration'
new(Dir['test/integration/**/*_test.rb'], options).run
else
options[:fixtures] = original_fixtures_options
new(files, options).run
end
end
# Parses arguments and sets them as option flags
def parse_arguments(arguments)
options = {}
orig_arguments = arguments.dup
OptionParser.new do |opts|
opts.banner = "Usage: rails test [path to test file(s) or test suite]"
opts.separator ""
opts.separator "Run a specific test file(s) or a test suite, under Rails'"
opts.separator "environment. If the file name(s) or suit name is omitted,"
opts.separator "Rails will run all tests."
opts.separator ""
opts.separator "Specific options:"
opts.on '-h', '--help', 'Display this help.' do
puts opts
exit
end
opts.on '-e', '--environment NAME', String, 'Specifies the environment to run this test under' do |e|
options[:environment] = e
end
opts.on '-f', '--fixtures', 'Load fixtures in test/fixtures/ before running the tests' do
options[:fixtures] = true
end
opts.on '-s', '--seed SEED', Integer, "Sets random seed" do |m|
options[:seed] = m.to_i
end
opts.on '-v', '--verbose', "Verbose. Show progress processing files." do
options[:verbose] = true
end
opts.on '-n', '--name PATTERN', "Filter test names on pattern (e.g. /foo/)" do |n|
options[:filter] = n
end
opts.separator ""
opts.separator "Support types of test suites:"
opts.separator "-------------------------------------------------------------"
opts.separator "* models (test/models/**/*)"
opts.separator "* helpers (test/helpers/**/*)"
opts.separator "* units (test/{models,helpers,unit}/**/*"
opts.separator "* controllers (test/controllers/**/*)"
opts.separator "* mailers (test/mailers/**/*)"
opts.separator "* functionals (test/{controllers,mailers,functional}/**/*)"
opts.separator "* integration (test/integration/**/*)"
opts.separator "-------------------------------------------------------------"
opts.parse! arguments
orig_arguments -= arguments
end
options
end
end
# Creates a new +TestRunner+ object with a list of test file paths.
def initialize(files, options)
@files = files
Rails.application.load_tasks
Rake::Task['db:test:load'].invoke
if options.delete(:fixtures)
if defined?(ActiveRecord::Base)
ActiveSupport::TestCase.send :include, ActiveRecord::TestFixtures
ActiveSupport::TestCase.fixture_path = "#{Rails.root}/test/fixtures/"
ActiveSupport::TestCase.fixtures :all
end
end
MiniTest::Unit.runner.options = options
MiniTest::Unit.output = SilentUntilSyncStream.new(MiniTest::Unit.output)
end
# Runs test files by evaluating each of them.
def run
@files.each { |filename| load(filename) }
end
# A null stream object which ignores everything until +sync+ has been set
# to true. This is only used to silence unnecessary output from MiniTest,
# as MiniTest calls +output.sync = true+ right before it outputs the first
# test result.
class SilentUntilSyncStream < File
# Creates a +SilentUntilSyncStream+ object by giving it a target stream
# object that will be assigned to +MiniTest::Unit.output+ after +sync+ is
# set to true.
def initialize(target_stream)
@target_stream = target_stream
super(File::NULL, 'w')
end
# Swaps +MiniTest::Unit.output+ to another stream when +sync+ is true.
def sync=(sync)
if sync
@target_stream.sync = true
MiniTest::Unit.output = @target_stream
end
super
end
end
end
end
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