Merge bundler to standard libraries.

  rubygems 2.7.x depends bundler-1.15.x. This is preparation for
  rubygems and bundler migration.

  * lib/bundler.rb, lib/bundler/*: files of bundler-1.15.4
  * spec/bundler/*: rspec examples of bundler-1.15.4. I applied patches.
    * https://github.com/bundler/bundler/pull/6007
    * Exclude not working examples on ruby repository.
    * Fake ruby interpriter instead of installed ruby.
  * Makefile.in: Added test task named `test-bundler`. This task is only
    working macOS/linux yet. I'm going to support Windows environment later.
  * tool/sync_default_gems.rb: Added sync task for bundler.

  [Feature #12733][ruby-core:77172]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59779 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

3 files changed, 137 insertions, 0 deletions

diff --git a/spec/bundler/bundler/installer/gem_installer_spec.rb b/spec/bundler/bundler/installer/gem_installer_spec.rb
new file mode 100644
index 0000000000..e2f30cdd70
--- /dev/null
+++ b/spec/bundler/bundler/installer/gem_installer_spec.rb
@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+require "spec_helper"
+require "bundler/installer/gem_installer"
+
+RSpec.describe Bundler::GemInstaller do
+  let(:installer) { instance_double("Installer") }
+  let(:spec_source) { instance_double("SpecSource") }
+  let(:spec) { instance_double("Specification", :name => "dummy", :version => "0.0.1", :loaded_from => "dummy", :source => spec_source) }
+
+  subject { described_class.new(spec, installer) }
+
+  context "spec_settings is nil" do
+    it "invokes install method with empty build_args", :rubygems => ">= 2" do
+      allow(spec_source).to receive(:install).with(spec, :force => false, :ensure_builtin_gems_cached => false, :build_args => [])
+      subject.install_from_spec
+    end
+  end
+
+  context "spec_settings is build option" do
+    it "invokes install method with build_args", :rubygems => ">= 2" do
+      allow(Bundler.settings).to receive(:[]).with(:bin)
+      allow(Bundler.settings).to receive(:[]).with(:inline)
+      allow(Bundler.settings).to receive(:[]).with("build.dummy").and_return("--with-dummy-config=dummy")
+      expect(spec_source).to receive(:install).with(spec, :force => false, :ensure_builtin_gems_cached => false, :build_args => ["--with-dummy-config=dummy"])
+      subject.install_from_spec
+    end
+  end
+end
diff --git a/spec/bundler/bundler/installer/parallel_installer_spec.rb b/spec/bundler/bundler/installer/parallel_installer_spec.rb
new file mode 100644
index 0000000000..7d2c441399
--- /dev/null
+++ b/spec/bundler/bundler/installer/parallel_installer_spec.rb
@@ -0,0 +1,47 @@
+# frozen_string_literal: true
+require "spec_helper"
+require "bundler/installer/parallel_installer"
+
+RSpec.describe Bundler::ParallelInstaller do
+  let(:installer) { instance_double("Installer") }
+  let(:all_specs) { [] }
+  let(:size) { 1 }
+  let(:standalone) { false }
+  let(:force) { false }
+
+  subject { described_class.new(installer, all_specs, size, standalone, force) }
+
+  context "when dependencies that are not on the overall installation list are the only ones not installed" do
+    let(:all_specs) do
+      [
+        build_spec("alpha", "1.0") {|s| s.runtime "a", "1" },
+      ].flatten
+    end
+
+    it "prints a warning" do
+      expect(Bundler.ui).to receive(:warn).with(<<-W.strip)
+Your lockfile was created by an old Bundler that left some things out.
+You can fix this by adding the missing gems to your Gemfile, running bundle install, and then removing the gems from your Gemfile.
+The missing gems are:
+* a depended upon by alpha
+      W
+      subject.check_for_corrupt_lockfile
+    end
+
+    context "when size > 1" do
+      let(:size) { 500 }
+
+      it "prints a warning and sets size to 1" do
+        expect(Bundler.ui).to receive(:warn).with(<<-W.strip)
+Your lockfile was created by an old Bundler that left some things out.
+Because of the missing DEPENDENCIES, we can only install gems one at a time, instead of installing 500 at a time.
+You can fix this by adding the missing gems to your Gemfile, running bundle install, and then removing the gems from your Gemfile.
+The missing gems are:
+* a depended upon by alpha
+        W
+        subject.check_for_corrupt_lockfile
+        expect(subject.size).to eq(1)
+      end
+    end
+  end
+end
diff --git a/spec/bundler/bundler/installer/spec_installation_spec.rb b/spec/bundler/bundler/installer/spec_installation_spec.rb
new file mode 100644
index 0000000000..1e368ab7c5
--- /dev/null
+++ b/spec/bundler/bundler/installer/spec_installation_spec.rb
@@ -0,0 +1,62 @@
+# frozen_string_literal: true
+require "spec_helper"
+require "bundler/installer/parallel_installer"
+
+RSpec.describe Bundler::ParallelInstaller::SpecInstallation do
+  let!(:dep) do
+    a_spec = Object.new
+    def a_spec.name
+      "I like tests"
+    end
+    a_spec
+  end
+
+  describe "#ready_to_enqueue?" do
+    context "when in enqueued state" do
+      it "is falsey" do
+        spec = described_class.new(dep)
+        spec.state = :enqueued
+        expect(spec.ready_to_enqueue?).to be_falsey
+      end
+    end
+
+    context "when in installed state" do
+      it "returns falsey" do
+        spec = described_class.new(dep)
+        spec.state = :installed
+        expect(spec.ready_to_enqueue?).to be_falsey
+      end
+    end
+
+    it "returns truthy" do
+      spec = described_class.new(dep)
+      expect(spec.ready_to_enqueue?).to be_truthy
+    end
+  end
+
+  describe "#dependencies_installed?" do
+    context "when all dependencies are installed" do
+      it "returns true" do
+        dependencies = []
+        dependencies << instance_double("SpecInstallation", :spec => "alpha", :name => "alpha", :installed? => true, :all_dependencies => [], :type => :production)
+        dependencies << instance_double("SpecInstallation", :spec => "beta", :name => "beta", :installed? => true, :all_dependencies => [], :type => :production)
+        all_specs = dependencies + [instance_double("SpecInstallation", :spec => "gamma", :name => "gamma", :installed? => false, :all_dependencies => [], :type => :production)]
+        spec = described_class.new(dep)
+        allow(spec).to receive(:all_dependencies).and_return(dependencies)
+        expect(spec.dependencies_installed?(all_specs)).to be_truthy
+      end
+    end
+
+    context "when all dependencies are not installed" do
+      it "returns false" do
+        dependencies = []
+        dependencies << instance_double("SpecInstallation", :spec => "alpha", :name => "alpha", :installed? => false, :all_dependencies => [], :type => :production)
+        dependencies << instance_double("SpecInstallation", :spec => "beta", :name => "beta", :installed? => true, :all_dependencies => [], :type => :production)
+        all_specs = dependencies + [instance_double("SpecInstallation", :spec => "gamma", :name => "gamma", :installed? => false, :all_dependencies => [], :type => :production)]
+        spec = described_class.new(dep)
+        allow(spec).to receive(:all_dependencies).and_return(dependencies)
+        expect(spec.dependencies_installed?(all_specs)).to be_falsey
+      end
+    end
+  end
+end