gem_dependency_test.rb

require 'plugin_test_helper'

class Rails::GemDependency
  public :install_command, :unpack_command
end

Rails::VendorGemSourceIndex.silence_spec_warnings = true

class GemDependencyTest < Test::Unit::TestCase
  def setup
    @gem              = Rails::GemDependency.new "xhpricotx"
    @gem_with_source  = Rails::GemDependency.new "xhpricotx", :source => "http://code.whytheluckystiff.net"
    @gem_with_version = Rails::GemDependency.new "xhpricotx", :version => "= 0.6"
    @gem_with_lib     = Rails::GemDependency.new "xaws-s3x", :lib => "aws/s3"
    @gem_without_load  = Rails::GemDependency.new "xhpricotx", :lib => false
  end

  def test_configuration_adds_gem_dependency
    config = Rails::Configuration.new
    config.gem "xaws-s3x", :lib => "aws/s3", :version => "0.4.0"
    assert_equal [["install", "xaws-s3x", "--version", '"= 0.4.0"']], config.gems.collect(&:install_command)
  end

  def test_gem_creates_install_command
    assert_equal %w(install xhpricotx), @gem.install_command
  end

  def test_gem_with_source_creates_install_command
    assert_equal %w(install xhpricotx --source http://code.whytheluckystiff.net), @gem_with_source.install_command
  end

  def test_gem_with_version_creates_install_command
    assert_equal ["install", "xhpricotx", "--version", '"= 0.6"'], @gem_with_version.install_command
  end

  def test_gem_creates_unpack_command
    assert_equal %w(unpack xhpricotx), @gem.unpack_command
  end

  def test_gem_with_version_unpack_install_command
    # stub out specification method, or else test will fail if hpricot 0.6 isn't installed
    mock_spec = mock()
    mock_spec.stubs(:version).returns('0.6')
    @gem_with_version.stubs(:specification).returns(mock_spec)
    assert_equal ["unpack", "xhpricotx", "--version", '= 0.6'], @gem_with_version.unpack_command
  end

  def test_gem_adds_load_paths
    @gem.expects(:gem).with(Gem::Dependency.new(@gem.name, nil))
    @gem.add_load_paths
  end

  def test_gem_with_version_adds_load_paths
    @gem_with_version.expects(:gem).with(Gem::Dependency.new(@gem_with_version.name, @gem_with_version.requirement.to_s))
    @gem_with_version.add_load_paths
  end

  def test_gem_loading
    @gem.expects(:gem).with(Gem::Dependency.new(@gem.name, nil))
    @gem.expects(:require).with(@gem.name)
    @gem.add_load_paths
    @gem.load
  end

  def test_gem_with_lib_loading
    @gem_with_lib.expects(:gem).with(Gem::Dependency.new(@gem_with_lib.name, nil))
    @gem_with_lib.expects(:require).with(@gem_with_lib.lib)
    @gem_with_lib.add_load_paths
    @gem_with_lib.load
  end

  def test_gem_without_lib_loading
    @gem_without_load.expects(:gem).with(Gem::Dependency.new(@gem_without_load.name, nil))
    @gem_without_load.expects(:require).with(@gem_without_load.lib).never
    @gem_without_load.add_load_paths
    @gem_without_load.load
  end

  def test_gem_dependencies_compare_for_uniq
    gem1 = Rails::GemDependency.new "gem1"
    gem1a = Rails::GemDependency.new "gem1"
    gem2 = Rails::GemDependency.new "gem2"
    gem2a = Rails::GemDependency.new "gem2"
    gem3 = Rails::GemDependency.new "gem2", :version => ">=0.1"
    gem3a = Rails::GemDependency.new "gem2", :version => ">=0.1"
    gem4 = Rails::GemDependency.new "gem3"
    gems = [gem1, gem2, gem1a, gem3, gem2a, gem4, gem3a, gem2, gem4]
    assert_equal 4, gems.uniq.size
  end

  def test_gem_load_frozen
    dummy_gem = Rails::GemDependency.new "dummy-gem-a"
    dummy_gem.add_load_paths
    dummy_gem.load
    assert_not_nil DUMMY_GEM_A_VERSION
  end

  def test_gem_load_frozen_specific_version
    dummy_gem = Rails::GemDependency.new "dummy-gem-b", :version => '0.4.0'
    dummy_gem.add_load_paths
    dummy_gem.load
    assert_not_nil DUMMY_GEM_B_VERSION
    assert_equal '0.4.0', DUMMY_GEM_B_VERSION
  end

  def test_gem_load_frozen_minimum_version
    dummy_gem = Rails::GemDependency.new "dummy-gem-c", :version => '>=0.5.0'
    dummy_gem.add_load_paths
    dummy_gem.load
    assert_not_nil DUMMY_GEM_C_VERSION
    assert_equal '0.6.0', DUMMY_GEM_C_VERSION
  end

  def test_gem_load_missing_specification
    dummy_gem = Rails::GemDependency.new "dummy-gem-d"
    dummy_gem.add_load_paths
    dummy_gem.load
    assert_not_nil DUMMY_GEM_D_VERSION
    assert_equal '1.0.0', DUMMY_GEM_D_VERSION
    assert_equal ['lib', 'lib/dummy-gem-d.rb'], dummy_gem.specification.files
  end

  def test_gem_load_bad_specification
    dummy_gem = Rails::GemDependency.new "dummy-gem-e", :version => "= 1.0.0"
    dummy_gem.add_load_paths
    dummy_gem.load
    assert_not_nil DUMMY_GEM_E_VERSION
    assert_equal '1.0.0', DUMMY_GEM_E_VERSION
  end

  def test_gem_handle_missing_dependencies
    dummy_gem = Rails::GemDependency.new "dummy-gem-g"
    dummy_gem.add_load_paths
    dummy_gem.load
    assert dummy_gem.loaded?
    assert_equal 2, dummy_gem.dependencies(:flatten => true).size
    assert_nothing_raised do
      dummy_gem.dependencies.each do |g|
        g.dependencies
      end
    end
  end

end