require 'spec_helper'

require 'fileutils'

describe Box::Release::Base do

  let(:update_tar) { File.expand_path "../../../fixtures/box-update-20100421-0846.tar", __FILE__ }

  subject { Box::Release::Memory.new }

  describe "#file" do

    context "by default" do
      its(:file) { should == "/tmp/release.tar" }
    end

    it "should use Box::Release.download_directory when defined" do
      subject.stub :download_directory => "/dummy"
      subject.file.should == "/dummy/release.tar"
    end

  end
  
  describe "#download" do

    before(:each) do
      FileUtils.rm_f(subject.file)
    end
  
    it "should download a local file" do
      subject.url = __FILE__
      subject.download
      IO.read(subject.file).should == IO.read(__FILE__)
    end

    it "should raise an error if checksum is invalid" do
      subject.stub :valid_checksum? => false
      lambda { subject.download }.should raise_error
    end

  end

  describe "valid_checksum? " do

    before(:each) do
      subject.stub :file => update_tar
    end

    it "should return true if checksum is SHA256 digest of downloaded file" do
      subject.checksum = "9eeb495a5b273c7dd88aa8dd741df8ecf10b5a34c422b0fe6b7a1b053a518369"
      subject.should be_valid_checksum
    end

    it "should return false if checksum is not the SHA256 digest of downloaded file" do
      subject.checksum = "dummy"
      subject.should_not be_valid_checksum
    end

    it "should return true if checksum is nil" do
      subject.checksum = nil
      subject.should be_valid_checksum
    end

    it "should return false if download file isn't found" do
      subject.checksum = "dummy"
      subject.stub!(:file_checksum)
      subject.should_not be_valid_checksum
    end

  end

  describe "to_yaml" do

    def self.it_shoud_include(attribute)
      attribute = attribute.to_s
      it "should the Release #{attribute}" do
        subject.send("#{attribute}=", "dummy")
        YAML.load(subject.to_yaml).should include(attribute => "dummy")
      end
    end

    it_shoud_include :name
    it_shoud_include :description_url
    it_shoud_include :status_updated_at

  end

  describe "yaml_file" do
    
    it "should return the path of a file which contains Release#to_yaml" do
      subject.stub :to_yaml => "to_yaml"
      IO.read(subject.yaml_file).should == "to_yaml"
    end

  end

  describe "#install" do

    before(:each) do
      subject.stub :yaml_file => "/path/to/tempfile"
    end
    
    it "should execute install command with release file and temp file (with attributes) in argument" do
      subject.stub :install_command => "/usr/bin/dummy", :file => "/tmp/test.tar"
      Box::Release.should_receive(:execute!).with("/usr/bin/dummy /tmp/test.tar /path/to/tempfile").and_return(true)
      subject.install
    end

  end

  describe '#newer? ' do
    
    it "should be true when other release is nil" do
      subject.should be_newer(nil)
    end

    it "should be true when name is greather than the other one" do
      subject.name = "version-2"
      subject.should be_newer(stub(:name => "version-1"))
    end

    it "should be false when name is nil" do
      subject.name = nil
      subject.should_not be_newer(stub(:name => "version-1"))
    end

  end

end