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# Define a task library for running unit tests.
require 'rake'
require 'rake/tasklib'
module Rake
# Create a task that runs a set of tests.
#
# Example:
#
# Rake::TestTask.new do |t|
# t.libs << "test"
# t.test_files = FileList['test/test*.rb']
# t.verbose = true
# end
#
# If rake is invoked with a "TEST=filename" command line option,
# then the list of test files will be overridden to include only the
# filename specified on the command line. This provides an easy way
# to run just one test.
#
# If rake is invoked with a "TESTOPTS=options" command line option,
# then the given options are passed to the test process after a
# '--'. This allows Test::Unit options to be passed to the test
# suite.
#
# Examples:
#
# rake test # run tests normally
# rake test TEST=just_one_file.rb # run just one test file.
# rake test TESTOPTS="-v" # run in verbose mode
# rake test TESTOPTS="--runner=fox" # use the fox test runner
#
class TestTask < TaskLib
# Name of test task. (default is :test)
attr_accessor :name
# List of directories to added to $LOAD_PATH before running the
# tests. (default is 'lib')
attr_accessor :libs
# True if verbose test output desired. (default is false)
attr_accessor :verbose
# Test options passed to the test suite. An explicit
# TESTOPTS=opts on the command line will override this. (default
# is NONE)
attr_accessor :options
# Request that the tests be run with the warning flag set.
# E.g. warning=true implies "ruby -w" used to run the tests.
attr_accessor :warning
# Glob pattern to match test files. (default is 'test/test*.rb')
attr_accessor :pattern
# Style of test loader to use. Options are:
#
# * :rake -- Rake provided test loading script (default).
# * :testrb -- Ruby provided test loading script.
# * :direct -- Load tests using command line loader.
#
attr_accessor :loader
# Array of commandline options to pass to ruby when running test loader.
attr_accessor :ruby_opts
# Explicitly define the list of test files to be included in a
# test. +list+ is expected to be an array of file names (a
# FileList is acceptable). If both +pattern+ and +test_files+ are
# used, then the list of test files is the union of the two.
def test_files=(list)
@test_files = list
end
# Create a testing task.
def initialize(name=:test)
@name = name
@libs = ["lib"]
@pattern = nil
@options = nil
@test_files = nil
@verbose = false
@warning = false
@loader = :rake
@ruby_opts = []
yield self if block_given?
@pattern = 'test/test*.rb' if @pattern.nil? && @test_files.nil?
define
end
# Create the tasks defined by this task lib.
def define
desc "Run tests" + (@name==:test ? "" : " for #{@name}")
task @name do
FileUtilsExt.verbose(@verbose) do
ruby "#{ruby_opts_string} #{run_code} #{file_list_string} #{option_list}"
end
end
self
end
def option_list # :nodoc:
(ENV['TESTOPTS'] ||
ENV['TESTOPT'] ||
ENV['TEST_OPTS'] ||
ENV['TEST_OPT'] ||
@options ||
"")
end
def ruby_opts_string
opts = @ruby_opts.dup
opts.unshift( "-I\"#{lib_path}\"" ) unless @libs.empty?
opts.unshift( "-w" ) if @warning
opts.join(" ")
end
def lib_path
@libs.join(File::PATH_SEPARATOR)
end
def file_list_string
file_list.collect { |fn| "\"#{fn}\"" }.join(' ')
end
def file_list # :nodoc:
if ENV['TEST']
FileList[ ENV['TEST'] ]
else
result = []
result += @test_files.to_a if @test_files
result << @pattern if @pattern
result
end
end
def fix # :nodoc:
case ruby_version
when '1.8.2'
"\"#{find_file 'rake/ruby182_test_unit_fix'}\""
else
nil
end || ''
end
def ruby_version
RUBY_VERSION
end
def run_code
case @loader
when :direct
"-e \"ARGV.each{|f| require f}\""
when :testrb
"-S testrb #{fix}"
when :rake
"-I\"#{rake_lib_dir}\" \"#{rake_loader}\""
end
end
def rake_loader # :nodoc:
find_file('rake/rake_test_loader') or
fail "unable to find rake test loader"
end
def find_file(fn) # :nodoc:
$LOAD_PATH.each do |path|
file_path = File.join(path, "#{fn}.rb")
return file_path if File.exist? file_path
end
nil
end
def rake_lib_dir # :nodoc:
find_dir('rake') or
fail "unable to find rake lib"
end
def find_dir(fn) # :nodoc:
$LOAD_PATH.each do |path|
file_path = File.join(path, "#{fn}.rb")
return path if File.exist? file_path
end
nil
end
end
end
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