耙中止任务未按顺序执行

Question

我有一个Rakefile，用于配置应用程序的环境，但由于在特定任务中安装了特定的Gem，Rake任务正在中止。

请参阅下面require 'data_mapper'在:configure_db任务中，行中的Rake中止require 'data_mapper' ， :configure_db由:build调用，它的先前任务是:bower_install和:bundle_install 。

ENV['JASMINE_CONFIG_PATH'] = 'spec/js/support/jasmine.yml'

task :bower_install do
        system 'bower install'
end

task :bundle_install => :bower_install do
        system 'bundle install'
end

task :configure_db => :bundle_install do
        require 'data_mapper'

        DataMapper.setup(:default, ENV['DATABASE_URL'] || "sqlite3://#{Dir.pwd}/vela.db")

        require './models/User.rb'

        DataMapper.finalize
        DataMapper.auto_migrate!
end


desc "Starts the Rack server so we can run our tests"
task :default => :bundle_install do
        require 'sinatra'
        require 'rspec/core/rake_task'
        require 'jasmine'
        load 'jasmine/tasks/jasmine.rake'

        RSpec::Core::RakeTask.new(:spec)

        require './app'
    system 'rackup -D'
    Rake::Task["spec"].invoke
    Rake::Task["jasmine:ci"].invoke
end

task :build => :configure_db

Answer 1

就任务依赖性而言，此Rakefile与您的Rakefile等效：

task :a do
  puts 'running task a'
end

task :b => :a do
  puts 'running task b'
end

task :c => :b do
  puts 'running task c'
end

task :d => :c do
  puts 'running task d'
end

task :e => :c

它给了我以下结果：

$ rake a
running task a

$ rake b
running task a
running task b

$ rake c
running task a
running task b
running task c

$ rake d
running task a
running task b
running task c
running task d

$ rake e
running task a
running task b
running task c

那不是您所需要的吗？ 我看不出问题出在哪里。