Merge 1-16-stable branch of bundler.

  It's rc version for bundler-1.16.1. I'm going to update it version
  after official release from bundler team.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61134 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 42 insertions, 0 deletions

diff --git a/spec/bundler/realworld/double_check_spec.rb b/spec/bundler/realworld/double_check_spec.rb
new file mode 100644
index 0000000000..0aa58b3de3
--- /dev/null
+++ b/spec/bundler/realworld/double_check_spec.rb
@@ -0,0 +1,42 @@
+# frozen_string_literal: true
+
+RSpec.describe "double checking sources", :realworld => true do
+  if RUBY_VERSION >= "2.2" # rails 5.x and rack 2.x only supports >= Ruby 2.2.
+    it "finds already-installed gems" do
+      create_file("rails.gemspec", <<-RUBY)
+        Gem::Specification.new do |s|
+          s.name        = "rails"
+          s.version     = "5.1.4"
+          s.summary     = ""
+          s.description = ""
+          s.author      = ""
+          s.add_dependency "actionpack", "5.1.4"
+        end
+      RUBY
+
+      create_file("actionpack.gemspec", <<-RUBY)
+        Gem::Specification.new do |s|
+          s.name        = "actionpack"
+          s.version     = "5.1.4"
+          s.summary     = ""
+          s.description = ""
+          s.author      = ""
+          s.add_dependency "rack", "~> 2.0.0"
+        end
+      RUBY
+
+      cmd = <<-RUBY
+        require "bundler"
+        require #{File.expand_path("../../support/artifice/vcr.rb", __FILE__).dump}
+        require "bundler/inline"
+        gemfile(true) do
+          source "https://rubygems.org"
+          gem "rails", path: "."
+        end
+      RUBY
+
+      ruby! cmd
+      ruby! cmd
+    end
+  end
+end