From ed2abc4362e841967a3758baa199f88cf41496b2 Mon Sep 17 00:00:00 2001
From: tenderlove <tenderlove@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 3 Jan 2017 22:42:10 +0000
Subject: Add `full` option to `ObjectSpace.dump_all`

The `full` option includes all slots (even `T_NONE`) in the JSON output.
This is to help with debugging heap fragmentation.

Here is an example usage:

```ruby
File.open('heap.json', 'w') do |f|
  ObjectSpace.dump_all(output: f, full: true)
end
```

The `heap.json` file contains all slots, including empty slots.

[Feature #13001] [ruby-core:78468]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57260 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 test/objspace/test_objspace.rb | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'test')

diff --git a/test/objspace/test_objspace.rb b/test/objspace/test_objspace.rb
index 52558418bf..c05c8c9992 100644
--- a/test/objspace/test_objspace.rb
+++ b/test/objspace/test_objspace.rb
@@ -275,6 +275,19 @@ class TestObjSpace < Test::Unit::TestCase
     assert_match /"value":"foobar\h+"/, dump
   end
 
+  def test_dump_all_full
+    assert_in_out_err(%w[-robjspace], <<-'end;') do |output, error|
+      def dump_my_heap_please
+        ObjectSpace.dump_all(output: :stdout, full: true)
+      end
+
+      dump_my_heap_please
+    end;
+    heap = output.find_all { |l| JSON.parse(l)['type'] == "NONE" }
+    assert_operator heap.length, :>, 0
+    end
+  end
+
   def test_dump_all
     entry = /"bytesize":11, "value":"TEST STRING", "encoding":"UTF-8", "file":"-", "line":4, "method":"dump_my_heap_please", "generation":/
 
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