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, 54 insertions, 0 deletions

diff --git a/spec/bundler/cache/platform_spec.rb b/spec/bundler/cache/platform_spec.rb
new file mode 100644
index 0000000000..ed80c949aa
--- /dev/null
+++ b/spec/bundler/cache/platform_spec.rb
@@ -0,0 +1,54 @@
+# frozen_string_literal: true
+require "spec_helper"
+
+RSpec.describe "bundle cache with multiple platforms" do
+  before :each do
+    gemfile <<-G
+      source "file://#{gem_repo1}"
+
+      platforms :mri, :rbx do
+        gem "rack", "1.0.0"
+      end
+
+      platforms :jruby do
+        gem "activesupport", "2.3.5"
+      end
+    G
+
+    lockfile <<-G
+      GEM
+        remote: file:#{gem_repo1}/
+        specs:
+          rack (1.0.0)
+          activesupport (2.3.5)
+
+      PLATFORMS
+        ruby
+        java
+
+      DEPENDENCIES
+        rack (1.0.0)
+        activesupport (2.3.5)
+    G
+
+    cache_gems "rack-1.0.0", "activesupport-2.3.5"
+  end
+
+  it "ensures that a successful bundle install does not delete gems for other platforms" do
+    bundle "install"
+
+    expect(exitstatus).to eq 0 if exitstatus
+
+    expect(bundled_app("vendor/cache/rack-1.0.0.gem")).to exist
+    expect(bundled_app("vendor/cache/activesupport-2.3.5.gem")).to exist
+  end
+
+  it "ensures that a successful bundle update does not delete gems for other platforms" do
+    bundle "update"
+
+    expect(exitstatus).to eq 0 if exitstatus
+
+    expect(bundled_app("vendor/cache/rack-1.0.0.gem")).to exist
+    expect(bundled_app("vendor/cache/activesupport-2.3.5.gem")).to exist
+  end
+end