[ruby/rubygems] Add support for lockfile in Gemfile

This allows you to specify the lockfile to use. This is useful if
you want to use different lockfiles for different ruby versions or
platforms. You can also skip writing the lockfile by using a false
value.

https://github.com/ruby/rubygems/commit/2896aa3fc2

Co-authored-by: Colby Swandale <996377+colby-swandale@users.noreply.github.com>

1 files changed, 22 insertions, 0 deletions

diff --git a/spec/bundler/commands/install_spec.rb b/spec/bundler/commands/install_spec.rb
index 0dbe950f87..68232d92de 100644
--- a/spec/bundler/commands/install_spec.rb
+++ b/spec/bundler/commands/install_spec.rb
@@ -29,6 +29,28 @@ RSpec.describe "bundle install with gem sources" do
       expect(bundled_app_lock).to exist
     end
 
+    it "creates lockfile based on the lockfile method in Gemfile" do
+      install_gemfile <<-G
+        lockfile "OmgFile.lock"
+        source "https://gem.repo1"
+        gem "myrack", "1.0"
+      G
+
+      bundle "install"
+
+      expect(bundled_app("OmgFile.lock")).to exist
+    end
+
+    it "does not make a lockfile if lockfile false is used in Gemfile" do
+      install_gemfile <<-G
+        lockfile false
+        source "https://gem.repo1"
+        gem 'myrack'
+      G
+
+      expect(bundled_app_lock).not_to exist
+    end
+
     it "does not create ./.bundle by default" do
       install_gemfile <<-G
         source "https://gem.repo1"