ensure parse! removes the command and its options

1 files changed, 20 insertions, 0 deletions

diff --git a/test/commands_test.rb b/test/commands_test.rb
index 6a48feb..8f0e84a 100644
--- a/test/commands_test.rb
+++ b/test/commands_test.rb
@@ -2,5 +2,25 @@ require 'helper'
 
 class CommandsTest < TestCase
 
+  def setup
+    @opts = Slop.new do |o|
+      o.on :v, :version
+      o.command :add do |add|
+        add.on :v, 'verbose mode'
+      end
+    end
+  end
+
+  test "parse! removes the command AND its options" do
+    items = %w'add -v'
+    @opts.parse! items
+    assert_equal [], items
+  end
+
+  test "parse does not remove the command or its options" do
+    items = %w'add -v'
+    @opts.parse items
+    assert_equal ['add', '-v'], items
+  end
 
 end