Add `mktmpdir` helper method.

1 files changed, 1 insertions, 3 deletions

diff --git a/Library/Homebrew/test/language/python_spec.rb b/Library/Homebrew/test/language/python_spec.rb
index c78520897..02f6bf8d2 100644
--- a/Library/Homebrew/test/language/python_spec.rb
+++ b/Library/Homebrew/test/language/python_spec.rb
@@ -4,14 +4,12 @@ require "resource"
 describe Language::Python::Virtualenv::Virtualenv do
   subject { described_class.new(formula, dir, "python") }
 
-  let(:dir) { @dir = Pathname.new(Dir.mktmpdir) }
+  let(:dir) { mktmpdir }
 
   let(:resource) { double("resource", stage: true) }
   let(:formula_bin) { dir/"formula_bin" }
   let(:formula) { double("formula", resource: resource, bin: formula_bin) }
 
-  after(:each) { dir.rmtree unless @dir.nil? }
-
   describe "#create" do
     it "creates a virtual environment" do
       expect(formula).to receive(:resource).with("homebrew-virtualenv").and_return(resource)