Fake BUNDLE_GEMFILE and BUNDLE_LOCKFILE to let checks pass

Bundler::Runtime#setup requires a real existing lockfile (see
Bundler::SharedHelpers#default_lockfile).

1 files changed, 14 insertions, 1 deletions

diff --git a/lib/bundled_gems.rb b/lib/bundled_gems.rb
index 0b6ae60b5f..429b34bef0 100644
--- a/lib/bundled_gems.rb
+++ b/lib/bundled_gems.rb
@@ -209,13 +209,24 @@ module Gem::BUNDLED_GEMS # :nodoc:
 
     builder = Bundler::Dsl.new
 
+    lockfile = nil
     if Bundler::SharedHelpers.in_bundle? && Bundler.definition.gemfiles.size > 0
       Bundler.definition.gemfiles.each {|gemfile| builder.eval_gemfile(gemfile) }
+      lockfile = begin
+        Bundler.default_lockfile
+      rescue Bundler::GemfileNotFound
+        nil
+      end
+    else
+      # Fake BUNDLE_GEMFILE and BUNDLE_LOCKFILE to let checks pass
+      orig_gemfile = ENV["BUNDLE_GEMFILE"]
+      orig_lockfile = ENV["BUNDLE_LOCKFILE"]
+      Bundler::SharedHelpers.set_env "BUNDLE_GEMFILE", "Gemfile"
+      Bundler::SharedHelpers.set_env "BUNDLE_LOCKFILE", "Gemfile.lock"
     end
 
     builder.gem gem
 
-    lockfile = Bundler.default_lockfile
     definition = builder.to_definition(lockfile, nil)
     definition.validate_runtime!
 
@@ -232,6 +243,8 @@ module Gem::BUNDLED_GEMS # :nodoc:
     rescue Bundler::GemNotFound
       warn "Failed to activate #{gem}, please install it with 'gem install #{gem}'"
     ensure
+      ENV['BUNDLE_GEMFILE'] = orig_gemfile if orig_gemfile
+      ENV['BUNDLE_LOCKFILE'] = orig_lockfile if orig_lockfile
       Bundler.ui = orig_ui
       Bundler::Definition.no_lock = orig_no_lock
     end