Forwarding ports now clears old ports first

lib/vagrant/actions/forward_ports.rb

@@ -2,6 +2,16 @@ module Vagrant
   module Actions
     class ForwardPorts < Base
       def execute!
+        clear
+        forward_ports
+      end
+
+      def clear
+        logger.info "Deleting any previously set forwarded ports..."
+        @vm.vm.forwarded_ports.collect { |p| p.destroy(true) }
+      end
+
+      def forward_ports
         logger.info "Forwarding ports..."
 
         Vagrant.config.vm.forwarded_ports.each do |name, options|

test/vagrant/actions/forward_ports_test.rb

@@ -6,20 +6,45 @@ class ForwardPortsActionTest < Test::Unit::TestCase
     mock_config
   end
 
-  should "create a port forwarding for the VM" do
-    forwarded_ports = mock("forwarded_ports")
-
-    Vagrant.config.vm.forwarded_ports.each do |name, opts|
-      forwarded_ports.expects(:<<).with do |port|
-        assert_equal name, port.name
-        assert_equal opts[:hostport], port.hostport
-        assert_equal opts[:guestport], port.guestport
-        true
-      end
+  context "execution" do
+    should "clear all previous ports and forward new ports" do
+      exec_seq = sequence("exec_seq")
+      @action.expects(:clear).once.in_sequence(exec_seq)
+      @action.expects(:forward_ports).once.in_sequence(exec_seq)
+      @action.execute!
     end
+  end
 
-    @vm.expects(:forwarded_ports).returns(forwarded_ports)
-    @vm.expects(:save).with(true).once
-    @action.execute!
+  context "forwarding ports" do
+    should "create a port forwarding for the VM" do
+      forwarded_ports = mock("forwarded_ports")
+
+      Vagrant.config.vm.forwarded_ports.each do |name, opts|
+        forwarded_ports.expects(:<<).with do |port|
+          assert_equal name, port.name
+          assert_equal opts[:hostport], port.hostport
+          assert_equal opts[:guestport], port.guestport
+          true
+        end
+      end
+
+      @vm.expects(:forwarded_ports).returns(forwarded_ports)
+      @vm.expects(:save).with(true).once
+      @action.forward_ports
+    end
+  end
+
+  context "clearing forwarded ports" do
+    should "call destroy on all forwarded ports" do
+      forwarded_ports = []
+      5.times do |i|
+        port = mock("port#{i}")
+        port.expects(:destroy).with(true).once
+        forwarded_ports << port
+      end
+
+      @vm.expects(:forwarded_ports).returns(forwarded_ports)
+      @action.clear
+    end
   end
 end