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

1 files changed, 45 insertions, 0 deletions

diff --git a/spec/bundler/install/gemfile/install_if.rb b/spec/bundler/install/gemfile/install_if.rb
new file mode 100644
index 0000000000..b1717ad583
--- /dev/null
+++ b/spec/bundler/install/gemfile/install_if.rb
@@ -0,0 +1,45 @@
+# frozen_string_literal: true
+require "spec_helper"
+
+describe "bundle install with install_if conditionals" do
+  it "follows the install_if DSL" do
+    install_gemfile <<-G
+      source "file://#{gem_repo1}"
+      install_if(lambda { true }) do
+        gem "activesupport", "2.3.5"
+      end
+      gem "thin", :install_if => false
+      install_if(lambda { false }) do
+        gem "foo"
+      end
+      gem "rack"
+    G
+
+    expect(the_bundle).to include_gems("rack 1.0", "activesupport 2.3.5")
+    expect(the_bundle).not_to include_gems("thin")
+    expect(the_bundle).not_to include_gems("foo")
+
+    lockfile_should_be <<-L
+      GEM
+        remote: file:#{gem_repo1}/
+        specs:
+          activesupport (2.3.5)
+          foo (1.0)
+          rack (1.0.0)
+          thin (1.0)
+            rack
+
+      PLATFORMS
+        ruby
+
+      DEPENDENCIES
+        activesupport (= 2.3.5)
+        foo
+        rack
+        thin
+
+      BUNDLED WITH
+         #{Bundler::VERSION}
+    L
+  end
+end