Added bundler as default gems. Revisit [Feature #12733]

  * bin/*, lib/bundler/*, lib/bundler.rb, spec/bundler, man/*:
    Merge from latest stable branch of bundler/bundler repository and
    added workaround patches. I will backport them into upstream.
  * common.mk, defs/gmake.mk: Added `test-bundler` task for test suite
    of bundler.
  * tool/sync_default_gems.rb: Added sync task for bundler.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65509 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 943 insertions, 0 deletions

diff --git a/spec/bundler/commands/update_spec.rb b/spec/bundler/commands/update_spec.rb
new file mode 100644
index 0000000000..6eb49d3acd
--- /dev/null
+++ b/spec/bundler/commands/update_spec.rb
@@ -0,0 +1,943 @@
+# frozen_string_literal: true
+
+RSpec.describe "bundle update" do
+  before :each do
+    build_repo2
+
+    install_gemfile <<-G
+      source "file://#{gem_repo2}"
+      gem "activesupport"
+      gem "rack-obama"
+    G
+  end
+
+  describe "with no arguments", :bundler => "< 2" do
+    it "updates the entire bundle" do
+      update_repo2 do
+        build_gem "activesupport", "3.0"
+      end
+
+      bundle "update"
+      expect(out).to include("Bundle updated!")
+      expect(the_bundle).to include_gems "rack 1.2", "rack-obama 1.0", "activesupport 3.0"
+    end
+
+    it "doesn't delete the Gemfile.lock file if something goes wrong" do
+      gemfile <<-G
+        source "file://#{gem_repo2}"
+        gem "activesupport"
+        gem "rack-obama"
+        exit!
+      G
+      bundle "update"
+      expect(bundled_app("Gemfile.lock")).to exist
+    end
+  end
+
+  describe "with --all", :bundler => "2" do
+    it "updates the entire bundle" do
+      update_repo2 do
+        build_gem "activesupport", "3.0"
+      end
+
+      bundle! "update", :all => true
+      expect(out).to include("Bundle updated!")
+      expect(the_bundle).to include_gems "rack 1.2", "rack-obama 1.0", "activesupport 3.0"
+    end
+
+    it "doesn't delete the Gemfile.lock file if something goes wrong" do
+      gemfile <<-G
+        source "file://#{gem_repo2}"
+        gem "activesupport"
+        gem "rack-obama"
+        exit!
+      G
+      bundle "update", :all => true
+      expect(bundled_app("Gemfile.lock")).to exist
+    end
+  end
+
+  describe "with --gemfile" do
+    it "creates lock files based on the Gemfile name" do
+      gemfile bundled_app("OmgFile"), <<-G
+        source "file://#{gem_repo1}"
+        gem "rack", "1.0"
+      G
+
+      bundle! "update --gemfile OmgFile", :all => bundle_update_requires_all?
+
+      expect(bundled_app("OmgFile.lock")).to exist
+    end
+  end
+
+  context "when update_requires_all_flag is set" do
+    before { bundle! "config update_requires_all_flag true" }
+
+    it "errors when passed nothing" do
+      install_gemfile! ""
+      bundle :update
+      expect(out).to eq("To update everything, pass the `--all` flag.")
+    end
+
+    it "errors when passed --all and another option" do
+      install_gemfile! ""
+      bundle "update --all foo"
+      expect(out).to eq("Cannot specify --all along with specific options.")
+    end
+
+    it "updates everything when passed --all" do
+      install_gemfile! ""
+      bundle "update --all"
+      expect(out).to include("Bundle updated!")
+    end
+  end
+
+  describe "--quiet argument" do
+    it "hides UI messages" do
+      bundle "update --quiet"
+      expect(out).not_to include("Bundle updated!")
+    end
+  end
+
+  describe "with a top level dependency" do
+    it "unlocks all child dependencies that are unrelated to other locked dependencies" do
+      update_repo2 do
+        build_gem "activesupport", "3.0"
+      end
+
+      bundle "update rack-obama"
+      expect(the_bundle).to include_gems "rack 1.2", "rack-obama 1.0", "activesupport 2.3.5"
+    end
+  end
+
+  describe "with an unknown dependency" do
+    it "should inform the user" do
+      bundle "update halting-problem-solver"
+      expect(out).to include "Could not find gem 'halting-problem-solver'"
+    end
+    it "should suggest alternatives" do
+      bundle "update active-support"
+      expect(out).to include "Did you mean activesupport?"
+    end
+  end
+
+  describe "with a child dependency" do
+    it "should update the child dependency" do
+      update_repo2
+      bundle "update rack"
+      expect(the_bundle).to include_gems "rack 1.2"
+    end
+  end
+
+  describe "when a possible resolve requires an older version of a locked gem" do
+    context "and only_update_to_newer_versions is set" do
+      before do
+        bundle! "config only_update_to_newer_versions true"
+      end
+
+      it "does not go to an older version" do
+        build_repo4 do
+          build_gem "tilt", "2.0.8"
+          build_gem "slim", "3.0.9" do |s|
+            s.add_dependency "tilt", [">= 1.3.3", "< 2.1"]
+          end
+          build_gem "slim_lint", "0.16.1" do |s|
+            s.add_dependency "slim", [">= 3.0", "< 5.0"]
+          end
+          build_gem "slim-rails", "0.2.1" do |s|
+            s.add_dependency "slim", ">= 0.9.2"
+          end
+          build_gem "slim-rails", "3.1.3" do |s|
+            s.add_dependency "slim", "~> 3.0"
+          end
+        end
+
+        install_gemfile! <<-G
+          source "file:#{gem_repo4}"
+          gem "slim-rails"
+          gem "slim_lint"
+        G
+
+        expect(the_bundle).to include_gems("slim 3.0.9", "slim-rails 3.1.3", "slim_lint 0.16.1")
+
+        update_repo4 do
+          build_gem "slim", "4.0.0" do |s|
+            s.add_dependency "tilt", [">= 2.0.6", "< 2.1"]
+          end
+        end
+
+        bundle! "update", :all => bundle_update_requires_all?
+
+        expect(the_bundle).to include_gems("slim 3.0.9", "slim-rails 3.1.3", "slim_lint 0.16.1")
+      end
+
+      it "should still downgrade if forced by the Gemfile" do
+        build_repo4 do
+          build_gem "a"
+          build_gem "b", "1.0"
+          build_gem "b", "2.0"
+        end
+
+        install_gemfile! <<-G
+          source "file:#{gem_repo4}"
+          gem "a"
+          gem "b"
+        G
+
+        expect(the_bundle).to include_gems("a 1.0", "b 2.0")
+
+        gemfile <<-G
+          source "file://#{gem_repo4}"
+          gem "a"
+          gem "b", "1.0"
+        G
+
+        bundle! "update b"
+
+        expect(the_bundle).to include_gems("a 1.0", "b 1.0")
+      end
+    end
+  end
+
+  describe "with --local option" do
+    it "doesn't hit repo2" do
+      FileUtils.rm_rf(gem_repo2)
+
+      bundle "update --local --all"
+      expect(out).not_to include("Fetching source index")
+    end
+  end
+
+  describe "with --group option" do
+    it "should update only specified group gems" do
+      install_gemfile <<-G
+        source "file://#{gem_repo2}"
+        gem "activesupport", :group => :development
+        gem "rack"
+      G
+      update_repo2 do
+        build_gem "activesupport", "3.0"
+      end
+      bundle "update --group development"
+      expect(the_bundle).to include_gems "activesupport 3.0"
+      expect(the_bundle).not_to include_gems "rack 1.2"
+    end
+
+    context "when conservatively updating a group with non-group sub-deps" do
+      it "should update only specified group gems" do
+        install_gemfile <<-G
+          source "file://#{gem_repo2}"
+          gem "activemerchant", :group => :development
+          gem "activesupport"
+        G
+        update_repo2 do
+          build_gem "activemerchant", "2.0"
+          build_gem "activesupport", "3.0"
+        end
+        bundle "update --conservative --group development"
+        expect(the_bundle).to include_gems "activemerchant 2.0"
+        expect(the_bundle).not_to include_gems "activesupport 3.0"
+      end
+    end
+
+    context "when there is a source with the same name as a gem in a group" do
+      before :each do
+        build_git "foo", :path => lib_path("activesupport")
+        install_gemfile <<-G
+          source "file://#{gem_repo2}"
+          gem "activesupport", :group => :development
+          gem "foo", :git => "#{lib_path("activesupport")}"
+        G
+      end
+
+      it "should not update the gems from that source" do
+        update_repo2 { build_gem "activesupport", "3.0" }
+        update_git "foo", "2.0", :path => lib_path("activesupport")
+
+        bundle "update --group development"
+        expect(the_bundle).to include_gems "activesupport 3.0"
+        expect(the_bundle).not_to include_gems "foo 2.0"
+      end
+    end
+
+    context "when bundler itself is a transitive dependency" do
+      it "executes without error" do
+        install_gemfile <<-G
+          source "file://#{gem_repo1}"
+          gem "activesupport", :group => :development
+          gem "rack"
+        G
+        update_repo2 do
+          build_gem "activesupport", "3.0"
+        end
+        bundle "update --group development"
+        expect(the_bundle).to include_gems "activesupport 2.3.5"
+        expect(the_bundle).to include_gems "bundler #{Bundler::VERSION}"
+        expect(the_bundle).not_to include_gems "rack 1.2"
+      end
+    end
+  end
+
+  describe "in a frozen bundle" do
+    it "should fail loudly", :bundler => "< 2" do
+      bundle! "install --deployment"
+      bundle "update", :all => bundle_update_requires_all?
+
+      expect(last_command).to be_failure
+      expect(out).to match(/You are trying to install in deployment mode after changing.your Gemfile/m)
+      expect(out).to match(/freeze \nby running `bundle install --no-deployment`./m)
+    end
+
+    it "should suggest different command when frozen is set globally", :bundler => "< 2" do
+      bundle! "config --global frozen 1"
+      bundle "update", :all => bundle_update_requires_all?
+      expect(out).to match(/You are trying to install in deployment mode after changing.your Gemfile/m).
+        and match(/freeze \nby running `bundle config --delete frozen`./m)
+    end
+
+    it "should suggest different command when frozen is set globally", :bundler => "2" do
+      bundle! "config --global deployment true"
+      bundle "update", :all => bundle_update_requires_all?
+      expect(out).to match(/You are trying to install in deployment mode after changing.your Gemfile/m).
+        and match(/freeze \nby running `bundle config --delete deployment`./m)
+    end
+  end
+
+  describe "with --source option" do
+    it "should not update gems not included in the source that happen to have the same name", :bundler => "< 2" do
+      install_gemfile! <<-G
+        source "file://#{gem_repo2}"
+        gem "activesupport"
+      G
+      update_repo2 { build_gem "activesupport", "3.0" }
+
+      bundle! "update --source activesupport"
+      expect(the_bundle).to include_gem "activesupport 3.0"
+    end
+
+    it "should not update gems not included in the source that happen to have the same name", :bundler => "2" do
+      install_gemfile! <<-G
+        source "file://#{gem_repo2}"
+        gem "activesupport"
+      G
+      update_repo2 { build_gem "activesupport", "3.0" }
+
+      bundle! "update --source activesupport"
+      expect(the_bundle).not_to include_gem "activesupport 3.0"
+    end
+
+    context "with unlock_source_unlocks_spec set to false" do
+      before { bundle! "config unlock_source_unlocks_spec false" }
+
+      it "should not update gems not included in the source that happen to have the same name" do
+        install_gemfile <<-G
+          source "file://#{gem_repo2}"
+          gem "activesupport"
+        G
+        update_repo2 { build_gem "activesupport", "3.0" }
+
+        bundle "update --source activesupport"
+        expect(the_bundle).not_to include_gems "activesupport 3.0"
+      end
+    end
+  end
+
+  context "when there is a child dependency that is also in the gemfile" do
+    before do
+      build_repo2 do
+        build_gem "fred", "1.0"
+        build_gem "harry", "1.0" do |s|
+          s.add_dependency "fred"
+        end
+      end
+
+      install_gemfile <<-G
+        source "file://#{gem_repo2}"
+        gem "harry"
+        gem "fred"
+      G
+    end
+
+    it "should not update the child dependencies of a gem that has the same name as the source", :bundler => "< 2" do
+      update_repo2 do
+        build_gem "fred", "2.0"
+        build_gem "harry", "2.0" do |s|
+          s.add_dependency "fred"
+        end
+      end
+
+      bundle "update --source harry"
+      expect(the_bundle).to include_gems "harry 2.0"
+      expect(the_bundle).to include_gems "fred 1.0"
+    end
+
+    it "should not update the child dependencies of a gem that has the same name as the source", :bundler => "2" do
+      update_repo2 do
+        build_gem "fred", "2.0"
+        build_gem "harry", "2.0" do |s|
+          s.add_dependency "fred"
+        end
+      end
+
+      bundle "update --source harry"
+      expect(the_bundle).to include_gems "harry 1.0", "fred 1.0"
+    end
+  end
+
+  context "when there is a child dependency that appears elsewhere in the dependency graph" do
+    before do
+      build_repo2 do
+        build_gem "fred", "1.0" do |s|
+          s.add_dependency "george"
+        end
+        build_gem "george", "1.0"
+        build_gem "harry", "1.0" do |s|
+          s.add_dependency "george"
+        end
+      end
+
+      install_gemfile <<-G
+        source "file://#{gem_repo2}"
+        gem "harry"
+        gem "fred"
+      G
+    end
+
+    it "should not update the child dependencies of a gem that has the same name as the source", :bundler => "< 2" do
+      update_repo2 do
+        build_gem "george", "2.0"
+        build_gem "harry", "2.0" do |s|
+          s.add_dependency "george"
+        end
+      end
+
+      bundle "update --source harry"
+      expect(the_bundle).to include_gems "harry 2.0"
+      expect(the_bundle).to include_gems "fred 1.0"
+      expect(the_bundle).to include_gems "george 1.0"
+    end
+
+    it "should not update the child dependencies of a gem that has the same name as the source", :bundler => "2" do
+      update_repo2 do
+        build_gem "george", "2.0"
+        build_gem "harry", "2.0" do |s|
+          s.add_dependency "george"
+        end
+      end
+
+      bundle "update --source harry"
+      expect(the_bundle).to include_gems "harry 1.0", "fred 1.0", "george 1.0"
+    end
+  end
+end
+
+RSpec.describe "bundle update in more complicated situations" do
+  before :each do
+    build_repo2
+  end
+
+  it "will eagerly unlock dependencies of a specified gem" do
+    install_gemfile <<-G
+      source "file://#{gem_repo2}"
+
+      gem "thin"
+      gem "rack-obama"
+    G
+
+    update_repo2 do
+      build_gem "thin", "2.0" do |s|
+        s.add_dependency "rack"
+      end
+    end
+
+    bundle "update thin"
+    expect(the_bundle).to include_gems "thin 2.0", "rack 1.2", "rack-obama 1.0"
+  end
+
+  it "will warn when some explicitly updated gems are not updated" do
+    install_gemfile! <<-G
+      source "file:#{gem_repo2}"
+
+      gem "thin"
+      gem "rack-obama"
+    G
+
+    update_repo2 do
+      build_gem("thin", "2.0") {|s| s.add_dependency "rack" }
+      build_gem "rack", "10.0"
+    end
+
+    bundle! "update thin rack-obama"
+    expect(last_command.stdboth).to include "Bundler attempted to update rack-obama but its version stayed the same"
+    expect(the_bundle).to include_gems "thin 2.0", "rack 10.0", "rack-obama 1.0"
+  end
+
+  it "will update only from pinned source" do
+    install_gemfile <<-G
+      source "file://#{gem_repo2}"
+
+      source "file://#{gem_repo1}" do
+        gem "thin"
+      end
+    G
+
+    update_repo2 do
+      build_gem "thin", "2.0"
+    end
+
+    bundle "update"
+    expect(the_bundle).to include_gems "thin 1.0"
+  end
+
+  context "when the lockfile is for a different platform" do
+    before do
+      build_repo4 do
+        build_gem("a", "0.9")
+        build_gem("a", "0.9") {|s| s.platform = "java" }
+        build_gem("a", "1.1")
+        build_gem("a", "1.1") {|s| s.platform = "java" }
+      end
+
+      gemfile <<-G
+        source "file://#{gem_repo4}"
+        gem "a"
+      G
+
+      lockfile <<-L
+        GEM
+          remote: file://#{gem_repo4}
+          specs:
+            a (0.9-java)
+
+        PLATFORMS
+          java
+
+        DEPENDENCIES
+          a
+      L
+
+      simulate_platform linux
+    end
+
+    it "allows updating" do
+      bundle! :update, :all => true
+      expect(the_bundle).to include_gem "a 1.1"
+    end
+
+    it "allows updating a specific gem" do
+      bundle! "update a"
+      expect(the_bundle).to include_gem "a 1.1"
+    end
+  end
+end
+
+RSpec.describe "bundle update without a Gemfile.lock" do
+  it "should not explode" do
+    build_repo2
+
+    gemfile <<-G
+      source "file://#{gem_repo2}"
+
+      gem "rack", "1.0"
+    G
+
+    bundle "update", :all => bundle_update_requires_all?
+
+    expect(the_bundle).to include_gems "rack 1.0.0"
+  end
+end
+
+RSpec.describe "bundle update when a gem depends on a newer version of bundler" do
+  before(:each) do
+    build_repo2 do
+      build_gem "rails", "3.0.1" do |s|
+        s.add_dependency "bundler", Bundler::VERSION.succ
+      end
+    end
+
+    gemfile <<-G
+      source "file://#{gem_repo2}"
+      gem "rails", "3.0.1"
+    G
+  end
+
+  it "should explain that bundler conflicted", :bundler => "< 2" do
+    bundle "update", :all => bundle_update_requires_all?
+    expect(last_command.stdboth).not_to match(/in snapshot/i)
+    expect(last_command.bundler_err).to match(/current Bundler version/i).
+      and match(/perhaps you need to update bundler/i)
+  end
+
+  it "should warn that the newer version of Bundler would conflict", :bundler => "2" do
+    bundle! "update", :all => true
+    expect(last_command.bundler_err).to include("rails (3.0.1) has dependency bundler").
+      and include("so the dependency is being ignored")
+    expect(the_bundle).to include_gem "rails 3.0.1"
+  end
+end
+
+RSpec.describe "bundle update" do
+  it "shows the previous version of the gem when updated from rubygems source", :bundler => "< 2" do
+    build_repo2
+
+    install_gemfile <<-G
+      source "file://#{gem_repo2}"
+      gem "activesupport"
+    G
+
+    bundle "update", :all => bundle_update_requires_all?
+    expect(out).to include("Using activesupport 2.3.5")
+
+    update_repo2 do
+      build_gem "activesupport", "3.0"
+    end
+
+    bundle "update", :all => bundle_update_requires_all?
+    expect(out).to include("Installing activesupport 3.0 (was 2.3.5)")
+  end
+
+  context "with suppress_install_using_messages set" do
+    before { bundle! "config suppress_install_using_messages true" }
+
+    it "only prints `Using` for versions that have changed" do
+      build_repo4 do
+        build_gem "bar"
+        build_gem "foo"
+      end
+
+      install_gemfile! <<-G
+        source "file://#{gem_repo4}"
+        gem "bar"
+        gem "foo"
+      G
+
+      bundle! "update", :all => bundle_update_requires_all?
+      out.gsub!(/RubyGems [\d\.]+ is not threadsafe.*\n?/, "")
+      expect(out).to include "Resolving dependencies...\nBundle updated!"
+
+      update_repo4 do
+        build_gem "foo", "2.0"
+      end
+
+      bundle! "update", :all => bundle_update_requires_all?
+      out.sub!("Removing foo (1.0)\n", "")
+      out.gsub!(/RubyGems [\d\.]+ is not threadsafe.*\n?/, "")
+      expect(out).to include strip_whitespace(<<-EOS).strip
+        Resolving dependencies...
+        Fetching foo 2.0 (was 1.0)
+        Installing foo 2.0 (was 1.0)
+        Bundle updated
+      EOS
+    end
+  end
+
+  it "shows error message when Gemfile.lock is not preset and gem is specified" do
+    install_gemfile <<-G
+      source "file://#{gem_repo2}"
+      gem "activesupport"
+    G
+
+    bundle "update nonexisting"
+    expect(out).to include("This Bundle hasn't been installed yet. Run `bundle install` to update and install the bundled gems.")
+    expect(exitstatus).to eq(22) if exitstatus
+  end
+end
+
+RSpec.describe "bundle update --ruby" do
+  before do
+    install_gemfile <<-G
+        ::RUBY_VERSION = '2.1.3'
+        ::RUBY_PATCHLEVEL = 100
+        ruby '~> 2.1.0'
+    G
+    bundle "update --ruby"
+  end
+
+  context "when the Gemfile removes the ruby" do
+    before do
+      install_gemfile <<-G
+          ::RUBY_VERSION = '2.1.4'
+          ::RUBY_PATCHLEVEL = 222
+      G
+    end
+    it "removes the Ruby from the Gemfile.lock" do
+      bundle "update --ruby"
+
+      lockfile_should_be <<-L
+       GEM
+         specs:
+
+       PLATFORMS
+         #{lockfile_platforms}
+
+       DEPENDENCIES
+
+       BUNDLED WITH
+          #{Bundler::VERSION}
+      L
+    end
+  end
+
+  context "when the Gemfile specified an updated Ruby version" do
+    before do
+      install_gemfile <<-G
+          ::RUBY_VERSION = '2.1.4'
+          ::RUBY_PATCHLEVEL = 222
+          ruby '~> 2.1.0'
+      G
+    end
+    it "updates the Gemfile.lock with the latest version" do
+      bundle "update --ruby"
+
+      lockfile_should_be <<-L
+       GEM
+         specs:
+
+       PLATFORMS
+         #{lockfile_platforms}
+
+       DEPENDENCIES
+
+       RUBY VERSION
+          ruby 2.1.4p222
+
+       BUNDLED WITH
+          #{Bundler::VERSION}
+      L
+    end
+  end
+
+  context "when a different Ruby is being used than has been versioned" do
+    before do
+      install_gemfile <<-G
+          ::RUBY_VERSION = '2.2.2'
+          ::RUBY_PATCHLEVEL = 505
+          ruby '~> 2.1.0'
+      G
+    end
+    it "shows a helpful error message" do
+      bundle "update --ruby"
+
+      expect(out).to include("Your Ruby version is 2.2.2, but your Gemfile specified ~> 2.1.0")
+    end
+  end
+
+  context "when updating Ruby version and Gemfile `ruby`" do
+    before do
+      install_gemfile <<-G
+          ::RUBY_VERSION = '1.8.3'
+          ::RUBY_PATCHLEVEL = 55
+          ruby '~> 1.8.0'
+      G
+    end
+    it "updates the Gemfile.lock with the latest version" do
+      bundle "update --ruby"
+
+      lockfile_should_be <<-L
+       GEM
+         specs:
+
+       PLATFORMS
+         #{lockfile_platforms}
+
+       DEPENDENCIES
+
+       RUBY VERSION
+          ruby 1.8.3p55
+
+       BUNDLED WITH
+          #{Bundler::VERSION}
+      L
+    end
+  end
+end
+
+RSpec.describe "bundle update --bundler" do
+  it "updates the bundler version in the lockfile without re-resolving" do
+    build_repo4 do
+      build_gem "rack", "1.0"
+    end
+
+    install_gemfile! <<-G
+      source "file:#{gem_repo4}"
+      gem "rack"
+    G
+    lockfile lockfile.sub(/(^\s*)#{Bundler::VERSION}($)/, '\11.0.0\2')
+
+    FileUtils.rm_r gem_repo4
+
+    bundle! :update, :bundler => true, :verbose => true
+    expect(the_bundle).to include_gem "rack 1.0"
+
+    expect(the_bundle.locked_gems.bundler_version).to eq v(Bundler::VERSION)
+  end
+end
+
+# these specs are slow and focus on integration and therefore are not exhaustive. unit specs elsewhere handle that.
+RSpec.describe "bundle update conservative" do
+  context "patch and minor options" do
+    before do
+      build_repo4 do
+        build_gem "foo", %w[1.4.3 1.4.4] do |s|
+          s.add_dependency "bar", "~> 2.0"
+        end
+        build_gem "foo", %w[1.4.5 1.5.0] do |s|
+          s.add_dependency "bar", "~> 2.1"
+        end
+        build_gem "foo", %w[1.5.1] do |s|
+          s.add_dependency "bar", "~> 3.0"
+        end
+        build_gem "bar", %w[2.0.3 2.0.4 2.0.5 2.1.0 2.1.1 3.0.0]
+        build_gem "qux", %w[1.0.0 1.0.1 1.1.0 2.0.0]
+      end
+
+      # establish a lockfile set to 1.4.3
+      install_gemfile <<-G
+        source "file://#{gem_repo4}"
+        gem 'foo', '1.4.3'
+        gem 'bar', '2.0.3'
+        gem 'qux', '1.0.0'
+      G
+
+      # remove 1.4.3 requirement and bar altogether
+      # to setup update specs below
+      gemfile <<-G
+        source "file://#{gem_repo4}"
+        gem 'foo'
+        gem 'qux'
+      G
+    end
+
+    context "patch preferred" do
+      it "single gem updates dependent gem to minor" do
+        bundle! "update --patch foo"
+
+        expect(the_bundle).to include_gems "foo 1.4.5", "bar 2.1.1", "qux 1.0.0"
+      end
+
+      it "update all" do
+        bundle! "update --patch", :all => bundle_update_requires_all?
+
+        expect(the_bundle).to include_gems "foo 1.4.5", "bar 2.1.1", "qux 1.0.1"
+      end
+    end
+
+    context "minor preferred" do
+      it "single gem updates dependent gem to major" do
+        bundle! "update --minor foo"
+
+        expect(the_bundle).to include_gems "foo 1.5.1", "bar 3.0.0", "qux 1.0.0"
+      end
+    end
+
+    context "strict" do
+      it "patch preferred" do
+        bundle! "update --patch foo bar --strict"
+
+        expect(the_bundle).to include_gems "foo 1.4.4", "bar 2.0.5", "qux 1.0.0"
+      end
+
+      it "minor preferred" do
+        bundle! "update --minor --strict", :all => bundle_update_requires_all?
+
+        expect(the_bundle).to include_gems "foo 1.5.0", "bar 2.1.1", "qux 1.1.0"
+      end
+    end
+  end
+
+  context "eager unlocking" do
+    before do
+      build_repo4 do
+        build_gem "isolated_owner", %w[1.0.1 1.0.2] do |s|
+          s.add_dependency "isolated_dep", "~> 2.0"
+        end
+        build_gem "isolated_dep", %w[2.0.1 2.0.2]
+
+        build_gem "shared_owner_a", %w[3.0.1 3.0.2] do |s|
+          s.add_dependency "shared_dep", "~> 5.0"
+        end
+        build_gem "shared_owner_b", %w[4.0.1 4.0.2] do |s|
+          s.add_dependency "shared_dep", "~> 5.0"
+        end
+        build_gem "shared_dep", %w[5.0.1 5.0.2]
+      end
+
+      gemfile <<-G
+        source "file://#{gem_repo4}"
+        gem 'isolated_owner'
+
+        gem 'shared_owner_a'
+        gem 'shared_owner_b'
+      G
+
+      lockfile <<-L
+        GEM
+          remote: file://#{gem_repo4}
+          specs:
+            isolated_dep (2.0.1)
+            isolated_owner (1.0.1)
+              isolated_dep (~> 2.0)
+            shared_dep (5.0.1)
+            shared_owner_a (3.0.1)
+              shared_dep (~> 5.0)
+            shared_owner_b (4.0.1)
+              shared_dep (~> 5.0)
+
+        PLATFORMS
+          ruby
+
+        DEPENDENCIES
+          shared_owner_a
+          shared_owner_b
+          isolated_owner
+
+        BUNDLED WITH
+           1.13.0
+      L
+    end
+
+    it "should eagerly unlock isolated dependency" do
+      bundle "update isolated_owner"
+
+      expect(the_bundle).to include_gems "isolated_owner 1.0.2", "isolated_dep 2.0.2", "shared_dep 5.0.1", "shared_owner_a 3.0.1", "shared_owner_b 4.0.1"
+    end
+
+    it "should eagerly unlock shared dependency" do
+      bundle "update shared_owner_a"
+
+      expect(the_bundle).to include_gems "isolated_owner 1.0.1", "isolated_dep 2.0.1", "shared_dep 5.0.2", "shared_owner_a 3.0.2", "shared_owner_b 4.0.1"
+    end
+
+    it "should not eagerly unlock with --conservative" do
+      bundle "update --conservative shared_owner_a isolated_owner"
+
+      expect(the_bundle).to include_gems "isolated_owner 1.0.2", "isolated_dep 2.0.2", "shared_dep 5.0.1", "shared_owner_a 3.0.2", "shared_owner_b 4.0.1"
+    end
+
+    it "should match bundle install conservative update behavior when not eagerly unlocking" do
+      gemfile <<-G
+        source "file://#{gem_repo4}"
+        gem 'isolated_owner', '1.0.2'
+
+        gem 'shared_owner_a', '3.0.2'
+        gem 'shared_owner_b'
+      G
+
+      bundle "install"
+
+      expect(the_bundle).to include_gems "isolated_owner 1.0.2", "isolated_dep 2.0.2", "shared_dep 5.0.1", "shared_owner_a 3.0.2", "shared_owner_b 4.0.1"
+    end
+  end
+
+  context "error handling" do
+    before do
+      gemfile ""
+    end
+
+    it "raises if too many flags are provided" do
+      bundle "update --patch --minor", :all => bundle_update_requires_all?
+
+      expect(last_command.bundler_err).to eq "Provide only one of the following options: minor, patch"
+    end
+  end
+end