flex_spec.rb

require "spec_helper"

describe "bundle flex_install" do
  it "installs the gems as expected" do
    install_gemfile <<-G
      source "file://#{gem_repo1}"
      gem 'rack'
    G

    should_be_installed "rack 1.0.0"
    should_be_locked
  end

  it "installs even when the lockfile is invalid" do
    install_gemfile <<-G
      source "file://#{gem_repo1}"
      gem 'rack'
    G

    should_be_installed "rack 1.0.0"
    should_be_locked

    gemfile <<-G
      source "file://#{gem_repo1}"
      gem 'rack', '1.0'
    G

    bundle :install
    should_be_installed "rack 1.0.0"
    should_be_locked
  end

  it "keeps child dependencies at the same version" do
    build_repo2

    install_gemfile <<-G
      source "file://#{gem_repo2}"
      gem "rack-obama"
    G

    should_be_installed "rack 1.0.0", "rack-obama 1.0.0"

    update_repo2
    install_gemfile <<-G
      source "file://#{gem_repo2}"
      gem "rack-obama", "1.0"
    G

    should_be_installed "rack 1.0.0", "rack-obama 1.0.0"
  end

  describe "adding new gems" do
    it "installs added gems without updating previously installed gems" do
      build_repo2

      install_gemfile <<-G
        source "file://#{gem_repo2}"
        gem 'rack'
      G

      update_repo2

      install_gemfile <<-G
        source "file://#{gem_repo2}"
        gem 'rack'
        gem 'activesupport', '2.3.5'
      G

      should_be_installed "rack 1.0.0", 'activesupport 2.3.5'
    end

    it "keeps child dependencies pinned" do
      build_repo2

      install_gemfile <<-G
        source "file://#{gem_repo2}"
        gem "rack-obama"
      G

      update_repo2

      install_gemfile <<-G
        source "file://#{gem_repo2}"
        gem "rack-obama"
        gem "thin"
      G

      should_be_installed "rack 1.0.0", 'rack-obama 1.0', 'thin 1.0'
    end
  end

  describe "removing gems" do
    it "removes gems without changing the versions of remaining gems" do
      build_repo2
      install_gemfile <<-G
        source "file://#{gem_repo2}"
        gem 'rack'
        gem 'activesupport', '2.3.5'
      G

      update_repo2

      install_gemfile <<-G
        source "file://#{gem_repo2}"
        gem 'rack'
      G

      should_be_installed "rack 1.0.0"
      should_not_be_installed "activesupport 2.3.5"

      install_gemfile <<-G
        source "file://#{gem_repo2}"
        gem 'rack'
        gem 'activesupport', '2.3.2'
      G

      should_be_installed "rack 1.0.0", 'activesupport 2.3.2'
    end

    it "removes top level dependencies when removed from the Gemfile while leaving other dependencies intact" do
      build_repo2
      install_gemfile <<-G
        source "file://#{gem_repo2}"
        gem 'rack'
        gem 'activesupport', '2.3.5'
      G

      update_repo2

      install_gemfile <<-G
        source "file://#{gem_repo2}"
        gem 'rack'
      G

      should_not_be_installed "activesupport 2.3.5"
    end

    it "removes child dependencies" do
      build_repo2
      install_gemfile <<-G
        source "file://#{gem_repo2}"
        gem 'rack-obama'
        gem 'activesupport'
      G

      should_be_installed "rack 1.0.0", "rack-obama 1.0.0", "activesupport 2.3.5"

      update_repo2
      install_gemfile <<-G
        source "file://#{gem_repo2}"
        gem 'activesupport'
      G

      should_be_installed 'activesupport 2.3.5'
      should_not_be_installed "rack-obama", "rack"
    end
  end

  describe "when Gemfile conflicts with lockfile" do
    before(:each) do
      build_repo2
      install_gemfile <<-G
        source "file://#{gem_repo2}"
        gem "rack_middleware"
      G

      should_be_installed "rack_middleware 1.0", "rack 0.9.1"

      build_repo2
      update_repo2 do
        build_gem "rack-obama", "2.0" do |s|
          s.add_dependency "rack", "=1.2"
        end
        build_gem "rack_middleware", "2.0" do |s|
          s.add_dependency "rack", ">=1.0"
        end
      end

      gemfile <<-G
        source "file://#{gem_repo2}"
        gem "rack-obama", "2.0"
        gem "rack_middleware"
      G
    end

    it "does not install gems whose dependencies are not met" do
      bundle :install
      ruby <<-RUBY
        require 'bundler/setup'
      RUBY
      out.should =~ /could not find gem 'rack-obama/i
    end

    it "suggests bundle update when the Gemfile requires different versions than the lock" do
      nice_error = <<-E.strip.gsub(/^ {8}/, '')
        Fetching source index for file:#{gem_repo2}/
        Bundler could not find compatible versions for gem "rack":
          In snapshot (Gemfile.lock):
            rack (0.9.1)

          In Gemfile:
            rack-obama (= 2.0) depends on
              rack (= 1.2)

        Running `bundle update` will rebuild your snapshot from scratch, using only
        the gems in your Gemfile, which may resolve the conflict.
      E

      bundle :install
      out.should == nice_error
    end
  end

  describe "subtler cases" do
    before :each do
      install_gemfile <<-G
        source "file://#{gem_repo1}"
        gem "rack"
        gem "rack-obama"
      G

      gemfile <<-G
        source "file://#{gem_repo1}"
        gem "rack", "0.9.1"
        gem "rack-obama"
      G
    end

    it "does something" do
      lambda {
        bundle "install"
      }.should_not change { File.read(bundled_app('Gemfile.lock')) }

      out.should include('rack = 0.9.1')
      out.should include('locked at 1.0.0')
      out.should include('bundle update rack')
    end

    it "should work when you update" do
      bundle "update rack"
    end
  end

  describe "when adding a new source" do
    it "updates the lockfile" do
      build_repo2
      install_gemfile <<-G
        source "file://#{gem_repo1}"
        gem "rack"
      G
      install_gemfile <<-G
        source "file://#{gem_repo1}"
        source "file://#{gem_repo2}"
        gem "rack"
      G

      lockfile_should_be <<-L
      GEM
        remote: file:#{gem_repo1}/
        remote: file:#{gem_repo2}/
        specs:
          rack (1.0.0)

      PLATFORMS
        ruby

      DEPENDENCIES
        rack
      L
    end
  end
end