tu-context – Adds context blocks for Test::Unit¶ ↑

github.com/djsun/context github.com/jeremymcanally/context

If you’ve ever wanted contexts in your Test::Unit tests, then context is for you. Your tests will be easier to read and write without all the magic and extra code smell!

• Add contexts to Test::Unit tests

• Small DSL for specifying tests that are pretty

• Ability to chain context lifecycle methods (coming soon)

• Add contexts using familiar syntax:

  class UserTest < Test::Unit::TestCase
    context "A new User" do
      # Before/after lifecycle blocks
      before do
        @user = User.first
      end
  
      # Specify tests using DSL
      test "should have the right full_name" do
        assert_equal "Dude Man", @user.full_name
      end
  
      test "should be able to set parts of the name" do
        @user.first_name = "Mad"
        @user.last_name = "Max"
        @user.save
        assert_equal "Mad Max", @user.full_name
      end
  
      after do
        @user.first_name = "Dude"
        @user.last_name = "Man"
        @user.save!
      end
    end
  end
  

• It also has aliases that match other library’s syntaxes (all of which can be mixed and matched):

  class UserTest < Test::Unit::TestCase
    context "A new Account" do
      test "should be new" do
        Account.new.new_record?
      end
    end
  
    # RSpec-esque
    describe "A new User" do
      it "should do things" do
        User.first.do_things!
      end
    end
  
    # Shoulda-esque
    context "Another User" do
      should "do things that are fun" do
        User.first.do_things!(:fun)
      end
    end
  end
  

• Contexts can also be nested:

  class UserTest < Test::Unit::TestCase
    context "A new User" do
      context "with clown shoes" do
        test "should squeak" do
          assert_true User.find_by_shoes("clown").squeak?
        end
      end
  
      context "without clown shoes" do
        test "should not squeak" do
          assert_false User.find_by_shoes("dressy").squeak?
        end
      end
    end
  end
  

• You can also share behavior among contexts:

  class UserTest < Test::Unit::TestCase
    shared "shared things" do
      test "things are shared" do
        # test logic here...
      end
    end
  
    context "the first thing" do
      uses "shared things"
  
      test "other things..." do
        # More testing...
      end
    end
  end
  

• Shared behaviors can also use RSpec syntax

  class UserTest < Test::Unit::TestCase
    share_examples_for "shared things" do
      it "things are shared" do
        # test logic here...
      end
    end
  
    describe "the first thing" do
      it_should_behave_like "shared things"
  
      it "other things..." do
        # More testing...
      end
    end
  end
  

• Test::Unit (you have it; trust me)

$ gem sources -a http://gems.github.com
$ sudo gem install jeremymcanally-context

Original implementation by Jeremy McAnally, but heavily tweaked and borrowed from Rails Core and Pratik Naik. Repackaged as the tu-context gem by David James after pulling together various Github forks.