[rubygems/rubygems] Manage global gem cache directly

Previously, it was maintained in sync with the standard cache. That was
less efficient, and it caused some error messages to point to non
existent files.

https://github.com/rubygems/rubygems/commit/931f8cb8a9

1 files changed, 12 insertions, 0 deletions

diff --git a/spec/bundler/install/global_cache_spec.rb b/spec/bundler/install/global_cache_spec.rb
index 9bc243e7cf..2a679fd424 100644
--- a/spec/bundler/install/global_cache_spec.rb
+++ b/spec/bundler/install/global_cache_spec.rb
@@ -37,6 +37,18 @@ RSpec.describe "global gem caching" do
       expect(the_bundle).to include_gems "rack 1.0.0"
     end
 
+    it "shows a proper error message if a cached gem is corrupted" do
+      source_global_cache.mkpath
+      FileUtils.touch(source_global_cache("rack-1.0.0.gem"))
+
+      install_gemfile <<-G, :artifice => "compact_index_no_gem", :raise_on_error => false
+        source "#{source}"
+        gem "rack"
+      G
+
+      expect(err).to include("Gem::Package::FormatError: package metadata is missing in #{source_global_cache("rack-1.0.0.gem")}")
+    end
+
     describe "when the same gem from different sources is installed" do
       it "should use the appropriate one from the global cache" do
         install_gemfile <<-G, :artifice => "compact_index"