basic tests around edit

lib/cask/cli/edit.rb

@@ -1,6 +1,6 @@
-class Cask::CLI::Edit
+module Cask::CLI::Edit
   def self.run(*arguments)
-    cask_name, *rest = *arguments
+    cask_name, *_ = *arguments
     cask_path = Cask.path(cask_name)
     raise CaskUnavailableError, cask_name + ".rb" if cask_path.nil? || !cask_path.file?
     exec_editor cask_path

test/cli/edit_test.rb

@@ -0,0 +1,39 @@
+require 'test_helper'
+
+module RecordEditorCalls
+  def exec_editor(*command)
+    editor_commands << command
+  end
+
+  def reset!
+    @editor_commands = []
+  end
+
+  def editor_commands
+    @editor_commands ||= []
+  end
+end
+
+module Cask::CLI::Edit
+  extend RecordEditorCalls
+end
+
+describe Cask::CLI::Edit do
+  before do
+    Cask::CLI::Edit.reset!
+  end
+
+  it 'opens the editor for the specified cask' do
+    Cask::CLI::Edit.run('alfred')
+    Cask::CLI::Edit.editor_commands.must_equal [
+      [Cask.path('alfred')]
+    ]
+  end
+
+  it 'throws away additional arguments and uses the first' do
+    Cask::CLI::Edit.run('adium', 'alfred')
+    Cask::CLI::Edit.editor_commands.must_equal [
+      [Cask.path('adium')]
+    ]
+  end
+end