JezK

Edit File: test_definitions.rb

#!/usr/bin/env ruby

require 'test/unit'
require 'fileutils'
require 'rake'
require 'test/filecreation'
require 'test/rake_test_setup'

######################################################################
class TestDefinitions < Test::Unit::TestCase
  include Rake
  include TestMethods
  
  EXISTINGFILE = "testdata/existing"

def setup
    Task.clear
  end

def test_task
    done = false
    task :one => [:two] do done = true end
    task :two
    task :three => [:one, :two]
    check_tasks(:one, :two, :three)
    assert done, "Should be done"
  end

def test_file_task
    done = false
    file "testdata/one" => "testdata/two" do done = true end
    file "testdata/two"
    file "testdata/three" => ["testdata/one", "testdata/two"]
    check_tasks("testdata/one", "testdata/two", "testdata/three")
    assert done, "Should be done"
  end

def check_tasks(n1, n2, n3)
    t = Task[n1]
    assert Task === t, "Should be a Task"
    assert_equal n1.to_s, t.name
    assert_equal [n2.to_s], t.prerequisites.collect{|n| n.to_s}
    t.invoke
    t2 = Task[n2]
    assert_equal FileList[], t2.prerequisites
    t3 = Task[n3]
    assert_equal [n1.to_s, n2.to_s], t3.prerequisites.collect{|n|n.to_s}
  end

def test_incremental_definitions
    runs = []
    task :t1 => [:t2] do runs << "A"; 4321 end
    task :t1 => [:t3] do runs << "B"; 1234 end
    task :t1 => [:t3]
    task :t2
    task :t3
    Task[:t1].invoke
    assert_equal ["A", "B"], runs
    assert_equal ["t2", "t3"], Task[:t1].prerequisites
  end

def test_missing_dependencies
    task :x => ["testdata/missing"]
    assert_exception(RuntimeError) { Task[:x].invoke }
  end

def test_implicit_file_dependencies
    runs = []
    create_existing_file
    task :y => [EXISTINGFILE] do |t| runs << t.name end
    Task[:y].invoke
    assert_equal runs, ['y']
  end

private # ----------------------------------------------------------

def create_existing_file
    Dir.mkdir File.dirname(EXISTINGFILE) unless
      File.exist?(File.dirname(EXISTINGFILE))
    open(EXISTINGFILE, "w") do |f| f.puts "HI" end unless
      File.exist?(EXISTINGFILE)
  end

end

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