From d81af187eae3b4cc961b785d83899b1545db0127 Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <mitchell.hashimoto@gmail.com>
Date: Tue, 21 Jan 2014 12:13:54 -0800
Subject: [PATCH] core: add tests for MachineReadable and frozen strings

---
 test/unit/vagrant/ui_test.rb | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/test/unit/vagrant/ui_test.rb b/test/unit/vagrant/ui_test.rb
index c30935715..58da18e37 100644
--- a/test/unit/vagrant/ui_test.rb
+++ b/test/unit/vagrant/ui_test.rb
@@ -199,6 +199,19 @@ describe Vagrant::UI::MachineReadable do
 
       subject.machine(:type, "foo\nbar\r")
     end
+
+    # This is for a bug where JSON parses are frozen and an
+    # exception was being raised.
+    it "works properly with frozen string arguments" do
+      subject.should_receive(:safe_puts).with do |message|
+        parts = message.split(",")
+        expect(parts.length).to eq(4)
+        expect(parts[3]).to eq("foo\\nbar\\r")
+        true
+      end
+
+      subject.machine(:type, "foo\nbar\r".freeze)
+    end
   end
 end