Support GPG (signed data) container in Homebrew Cask (test case)

Library/Homebrew/test/cask/installer_spec.rb

@@ -161,6 +161,19 @@ describe Hbc::Installer, :cask do
       expect(Hbc.appdir.join("container-lzma--#{asset.version}")).to be_a_file
     end
 
+    it "works with gpg-based Casks" do
+      skip("gpg not installed") if which("gpg").nil?
+      asset = Hbc::CaskLoader.load_from_file(TEST_FIXTURE_DIR/"cask/Casks/container-gpg.rb")
+
+      allow(asset).to receive(:depends_on).and_return(empty_depends_on_stub)
+      shutup do
+        Hbc::Installer.new(asset).install
+      end
+
+      expect(Hbc.caskroom.join("container-gpg", asset.version)).to be_a_directory
+      expect(Hbc.appdir.join("container")).to be_a_file
+    end
+
     it "blows up on a bad checksum" do
       bad_checksum = Hbc::CaskLoader.load_from_file(TEST_FIXTURE_DIR/"cask/Casks/bad-checksum.rb")
       expect {

Library/Homebrew/test/support/fixtures/cask/Casks/container-gpg.rb

@@ -0,0 +1,12 @@
+cask 'container-gpg' do
+  version '1.2.3'
+  sha256 :no_check
+
+  url "file://#{TEST_FIXTURE_DIR}/cask/container.tar.xz.gpg"
+  gpg :embedded, key_id: 'B0976E51E5C047AD0FD051294E402EBF7C3C6A71'
+
+  homepage 'https://example.com/container-gpg'
+  depends_on formula: 'gpg'
+
+  app 'container'
+end