1 files changed, 27 insertions, 1 deletions
diff --git a/test/rubygems/test_gem_commands_build_command.rb b/test/rubygems/test_gem_commands_build_command.rb
index 703512ecba..08854f0bf1 100644
--- a/test/rubygems/test_gem_commands_build_command.rb
+++ b/test/rubygems/test_gem_commands_build_command.rb
@@ -1,3 +1,4 @@
+
 # frozen_string_literal: true
 require 'rubygems/test_case'
 require 'rubygems/commands/build_command'
@@ -117,5 +118,30 @@ class TestGemCommandsBuildCommand < Gem::TestCase
     util_test_build_gem @gem, gemspec_file, false
   end
 
-end
+  CERT_FILE = cert_path 'public3072'
+  SIGNING_KEY = key_path 'private3072'
+
+  def test_build_signed_gem
+    trust_dir = Gem::Security.trust_dir
+
+    spec = util_spec 'some_gem' do |s|
+      s.signing_key = SIGNING_KEY
+      s.cert_chain = [CERT_FILE]
+    end
+
+    gemspec_file = File.join(@tempdir, spec.spec_name)
+
+    File.open gemspec_file, 'w' do |gs|
+      gs.write spec.to_ruby
+    end
+
+    util_test_build_gem spec, gemspec_file
+
+    trust_dir.trust_cert OpenSSL::X509::Certificate.new(File.read(CERT_FILE))
 
+    gem = Gem::Package.new(File.join(@tempdir, spec.file_name),
+                           Gem::Security::HighSecurity)
+    assert gem.verify
+  end
+
+end