Prevent spec failure caused by network device mock leak

We were leaking some mocks in the network device singleton from
tests to tests.

Signed-off-by: Brice Figureau <brice-puppet@daysofwonder.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/lib/puppet/util/network_device.rb b/lib/puppet/util/network_device.rb
index d9c1aa34d..a650670ce 100644
--- a/lib/puppet/util/network_device.rb
+++ b/lib/puppet/util/network_device.rb
@@ -9,4 +9,9 @@ class Puppet::Util::NetworkDevice
   rescue => detail
     raise "Can't load #{device.provider} for #{device.name}: #{detail}"
   end
+
+  # for tests reset
+  def self.clear
+    @current = nil
+  end
 end
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