Convert Options test to spec.

Library/Homebrew/cask/spec/cask/cli/options_spec.rb

@@ -1,10 +1,10 @@
-require "test_helper"
+require "spec_helper"
 
 describe Hbc::CLI do
   it "supports setting the appdir" do
     Hbc::CLI.process_options %w[help --appdir=/some/path/foo]
 
-    Hbc.appdir.must_equal Pathname("/some/path/foo")
+    expect(Hbc.appdir).to eq(Pathname.new("/some/path/foo"))
   end
 
   it "supports setting the appdir from ENV" do
@@ -12,13 +12,13 @@ describe Hbc::CLI do
 
     Hbc::CLI.process_options %w[help]
 
-    Hbc.appdir.must_equal Pathname("/some/path/bar")
+    expect(Hbc.appdir).to eq(Pathname.new("/some/path/bar"))
   end
 
   it "supports setting the prefpanedir" do
     Hbc::CLI.process_options %w[help --prefpanedir=/some/path/foo]
 
-    Hbc.prefpanedir.must_equal Pathname("/some/path/foo")
+    expect(Hbc.prefpanedir).to eq(Pathname.new("/some/path/foo"))
   end
 
   it "supports setting the prefpanedir from ENV" do
@@ -26,13 +26,13 @@ describe Hbc::CLI do
 
     Hbc::CLI.process_options %w[help]
 
-    Hbc.prefpanedir.must_equal Pathname("/some/path/bar")
+    expect(Hbc.prefpanedir).to eq(Pathname.new("/some/path/bar"))
   end
 
   it "supports setting the qlplugindir" do
     Hbc::CLI.process_options %w[help --qlplugindir=/some/path/foo]
 
-    Hbc.qlplugindir.must_equal Pathname("/some/path/foo")
+    expect(Hbc.qlplugindir).to eq(Pathname.new("/some/path/foo"))
   end
 
   it "supports setting the qlplugindir from ENV" do
@@ -40,13 +40,13 @@ describe Hbc::CLI do
 
     Hbc::CLI.process_options %w[help]
 
-    Hbc.qlplugindir.must_equal Pathname("/some/path/bar")
+    expect(Hbc.qlplugindir).to eq(Pathname.new("/some/path/bar"))
   end
 
   it "supports setting the colorpickerdir" do
     Hbc::CLI.process_options %w[help --colorpickerdir=/some/path/foo]
 
-    Hbc.colorpickerdir.must_equal Pathname("/some/path/foo")
+    expect(Hbc.colorpickerdir).to eq(Pathname.new("/some/path/foo"))
   end
 
   it "supports setting the colorpickerdir from ENV" do
@@ -54,13 +54,13 @@ describe Hbc::CLI do
 
     Hbc::CLI.process_options %w[help]
 
-    Hbc.colorpickerdir.must_equal Pathname("/some/path/bar")
+    expect(Hbc.colorpickerdir).to eq(Pathname.new("/some/path/bar"))
   end
 
   it "supports setting the dictionarydir" do
     Hbc::CLI.process_options %w[help --dictionarydir=/some/path/foo]
 
-    Hbc.dictionarydir.must_equal Pathname("/some/path/foo")
+    expect(Hbc.dictionarydir).to eq(Pathname.new("/some/path/foo"))
   end
 
   it "supports setting the dictionarydir from ENV" do
@@ -68,13 +68,13 @@ describe Hbc::CLI do
 
     Hbc::CLI.process_options %w[help]
 
-    Hbc.dictionarydir.must_equal Pathname("/some/path/bar")
+    expect(Hbc.dictionarydir).to eq(Pathname.new("/some/path/bar"))
   end
 
   it "supports setting the fontdir" do
     Hbc::CLI.process_options %w[help --fontdir=/some/path/foo]
 
-    Hbc.fontdir.must_equal Pathname("/some/path/foo")
+    expect(Hbc.fontdir).to eq(Pathname.new("/some/path/foo"))
   end
 
   it "supports setting the fontdir from ENV" do
@@ -82,13 +82,13 @@ describe Hbc::CLI do
 
     Hbc::CLI.process_options %w[help]
 
-    Hbc.fontdir.must_equal Pathname("/some/path/bar")
+    expect(Hbc.fontdir).to eq(Pathname.new("/some/path/bar"))
   end
 
   it "supports setting the servicedir" do
     Hbc::CLI.process_options %w[help --servicedir=/some/path/foo]
 
-    Hbc.servicedir.must_equal Pathname("/some/path/foo")
+    expect(Hbc.servicedir).to eq(Pathname.new("/some/path/foo"))
   end
 
   it "supports setting the servicedir from ENV" do
@@ -96,36 +96,36 @@ describe Hbc::CLI do
 
     Hbc::CLI.process_options %w[help]
 
-    Hbc.servicedir.must_equal Pathname("/some/path/bar")
+    expect(Hbc.servicedir).to eq(Pathname.new("/some/path/bar"))
   end
 
   it "allows additional options to be passed through" do
     rest = Hbc::CLI.process_options %w[edit foo --create --appdir=/some/path/qux]
 
-    Hbc.appdir.must_equal Pathname("/some/path/qux")
-    rest.must_equal %w[edit foo --create]
+    expect(Hbc.appdir).to eq(Pathname.new("/some/path/qux"))
+    expect(rest).to eq(%w[edit foo --create])
   end
 
   describe "when a mandatory argument is missing" do
     it "shows a user-friendly error message" do
-      lambda {
+      expect {
         Hbc::CLI.process_options %w[install -f]
-      }.must_raise Hbc::CaskError
+      }.to raise_error(Hbc::CaskError)
     end
   end
 
   describe "given an ambiguous option" do
     it "shows a user-friendly error message" do
-      lambda {
+      expect {
         Hbc::CLI.process_options %w[edit -c]
-      }.must_raise Hbc::CaskError
+      }.to raise_error(Hbc::CaskError)
     end
   end
 
   describe "--debug" do
     it "sets the Cask debug method to true" do
       Hbc::CLI.process_options %w[help --debug]
-      Hbc.debug.must_equal true
+      expect(Hbc.debug).to be true
       Hbc.debug = false
     end
   end
@@ -133,12 +133,8 @@ describe Hbc::CLI do
   describe "--help" do
     it "sets the Cask help method to true" do
       Hbc::CLI.process_options %w[foo --help]
-      Hbc.help.must_equal true
+      expect(Hbc.help).to be true
       Hbc.help = false
     end
   end
-
-  after do
-    ENV["HOMEBREW_CASK_OPTS"] = nil
-  end
 end

Library/Homebrew/cask/spec/spec_helper.rb

@@ -37,12 +37,34 @@ FileUtils.ln_s Pathname.new(ENV["HOMEBREW_LIBRARY"]).join("Taps", "caskroom", "h
 RSpec.configure do |config|
   config.order = :random
   config.include(Test::Helper::Shutup)
-  config.after(:each) do
+  config.around(:each) do |example|
+    begin
+      @__appdir = Hbc.appdir
+      @__caskroom = Hbc.caskroom
+      @__prefpanedir = Hbc.prefpanedir
+      @__qlplugindir = Hbc.qlplugindir
+      @__servicedir = Hbc.servicedir
+
+      @__argv = ARGV.dup
+      @__env = ENV.to_hash # dup doesn't work on ENV
+
+      example.run
+    ensure
+      ARGV.replace(@__argv)
+      ENV.replace(@__env)
+
+      Hbc.appdir = @__appdir
+      Hbc.caskroom = @__caskroom
+      Hbc.prefpanedir = @__prefpanedir
+      Hbc.qlplugindir = @__qlplugindir
+      Hbc.servicedir = @__servicedir
+
       FileUtils.rm_rf [
         Hbc.appdir.children,
         Hbc.caskroom.children,
       ]
     end
+  end
 end
 
 module Hbc