`vagrant box remove` functionality is in

lib/vagrant/actions/box/unpackage.rb

@@ -21,7 +21,7 @@ msg
         end
 
         def box_dir
-          File.join(Env.boxes_path, @runner.name)
+          @runner.directory
         end
 
         def decompress

lib/vagrant/box.rb

@@ -5,16 +5,38 @@ module Vagrant
     attr_accessor :temp_path
 
     class <<self
+      # Finds a box by the given name
+      def find(name)
+        return nil unless File.directory?(directory(name))
+        new(name)
+      end
+
       def add(name, uri)
         box = new
         box.name = name
         box.uri = uri
         box.add
       end
+
+      def directory(name)
+        File.join(Env.boxes_path, name)
+      end
+    end
+
+    def initialize(name=nil)
+      @name = name
     end
 
     def add
       execute!(Actions::Box::Add)
     end
+
+    def destroy
+      FileUtils.rm_rf(directory)
+    end
+
+    def directory
+      self.class.directory(self.name)
+    end
   end
 end

lib/vagrant/commands.rb

@@ -161,6 +161,19 @@ error
         Box.add(name, path)
       end
 
+      # Removes a box.
+      def box_remove(name)
+        box = Box.find(name)
+        if box.nil?
+          error_and_exit(<<-error)
+The box you're attempting to remove does not exist!
+error
+          return # for tests
+        end
+
+        box.destroy
+      end
+
       private
 
       def act_on_vm(&block)

test/vagrant/actions/box/unpackage_test.rb

@@ -20,12 +20,10 @@ class UnpackageBoxActionTest < Test::Unit::TestCase
   end
 
   context "box directory" do
-    setup do
-      @box_dir = File.join(Vagrant::Env.boxes_path, @runner.name)
-    end
-
-    should "return the boxes_path joined with the name" do
-      assert_equal @box_dir, @action.box_dir
+    should "return the runner directory" do
+      result = mock("object")
+      @runner.expects(:directory).once.returns(result)
+      assert result.equal?(@action.box_dir)
     end
   end
 

test/vagrant/box_test.rb

@@ -2,6 +2,26 @@ require File.join(File.dirname(__FILE__), '..', 'test_helper')
 
 class BoxTest < Test::Unit::TestCase
   context "class methods" do
+    context "finding" do
+      setup do
+        @dir = "foo"
+        @name = "bar"
+        Vagrant::Box.stubs(:directory).with(@name).returns(@dir)
+      end
+
+      should "return nil if the box doesn't exist" do
+        File.expects(:directory?).with(@dir).once.returns(false)
+        assert_nil Vagrant::Box.find(@name)
+      end
+
+      should "return a box object with the proper name set" do
+        File.expects(:directory?).with(@dir).once.returns(true)
+        result = Vagrant::Box.find(@name)
+        assert result
+        assert_equal @name, result.name
+      end
+    end
+
     context "adding" do
       setup do
         @name = "foo"
@@ -17,6 +37,17 @@ class BoxTest < Test::Unit::TestCase
         Vagrant::Box.add(@name, @uri)
       end
     end
+
+    context "box directory" do
+      setup do
+        @name = "foo"
+        @box_dir = File.join(Vagrant::Env.boxes_path, @name)
+      end
+
+      should "return the boxes_path joined with the name" do
+        assert_equal @box_dir, Vagrant::Box.directory(@name)
+      end
+    end
   end
 
   context "instance methods" do
@@ -28,5 +59,29 @@ class BoxTest < Test::Unit::TestCase
       @box.expects(:execute!).with(Vagrant::Actions::Box::Add).once
       @box.add
     end
+
+    context "box directory" do
+      setup do
+        @box.name = "foo"
+      end
+
+      should "return the boxes_path joined with the name" do
+        result = mock("object")
+        Vagrant::Box.expects(:directory).with(@box.name).returns(result)
+        assert result.equal?(@box.directory)
+      end
+    end
+
+    context "destroying" do
+      setup do
+        @dir = mock("directory")
+        @box.stubs(:directory).returns(@dir)
+      end
+
+      should "rm_rf the directory" do
+        FileUtils.expects(:rm_rf).with(@dir).once
+        @box.destroy
+      end
+    end
   end
 end

test/vagrant/commands_test.rb

@@ -210,4 +210,23 @@ class CommandsTest < Test::Unit::TestCase
       Vagrant::Commands.box_add(@name, @path)
     end
   end
+
+  context "box remove" do
+    setup do
+      @name = "foo"
+    end
+
+    should "error and exit if the box doesn't exist" do
+      Vagrant::Box.expects(:find).returns(nil)
+      Vagrant::Commands.expects(:error_and_exit).once
+      Vagrant::Commands.box_remove(@name)
+    end
+
+    should "call destroy on the box if it exists" do
+      @box = mock("box")
+      Vagrant::Box.expects(:find).with(@name).returns(@box)
+      @box.expects(:destroy).once
+      Vagrant::Commands.box_remove(@name)
+    end
+  end
 end