Convert DMG test to spec.

1 files changed, 22 insertions, 0 deletions

diff --git a/Library/Homebrew/cask/spec/cask/container/dmg_spec.rb b/Library/Homebrew/cask/spec/cask/container/dmg_spec.rb
new file mode 100644
index 000000000..af42d89b1
--- /dev/null
+++ b/Library/Homebrew/cask/spec/cask/container/dmg_spec.rb
@@ -0,0 +1,22 @@
+require "spec_helper"
+
+describe Hbc::Container::Dmg do
+  describe "#mount!" do
+    it "does not store nil mounts for dmgs with extra data" do
+      transmission = Hbc::CaskLoader.load_from_file(TEST_FIXTURE_DIR/"cask/Casks/local-transmission.rb")
+
+      dmg = Hbc::Container::Dmg.new(
+        transmission,
+        Pathname(transmission.url.path),
+        Hbc::SystemCommand
+      )
+
+      begin
+        dmg.mount!
+        expect(dmg.mounts).not_to include nil
+      ensure
+        dmg.eject!
+      end
+    end
+  end
+end