56 lines
1.5 KiB
Ruby
56 lines
1.5 KiB
Ruby
require 'test_helper'
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class HooksTest < Test::Unit::TestCase
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context "Hooks.define_hook" do
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setup do
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@klass = Class.new(Object) do
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extend Hooks::InheritableAttribute
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end
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@mum = @klass.new
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@klass.inheritable_attr :drinks
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end
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should "provide a reader with empty inherited attributes, already" do
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assert_equal nil, @klass.drinks
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end
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should "provide a reader with empty inherited attributes in a derived class" do
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assert_equal nil, Class.new(@klass).drinks
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#@klass.drinks = true
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#Class.new(@klass).drinks # TODO: crashes.
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end
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should "provide an attribute copy in subclasses" do
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@klass.drinks = []
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assert @klass.drinks.object_id != Class.new(@klass).drinks.object_id
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end
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should "provide a writer" do
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@klass.drinks = [:cabernet]
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assert_equal [:cabernet], @klass.drinks
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end
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should "inherit attributes" do
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@klass.drinks = [:cabernet]
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subklass_a = Class.new(@klass)
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subklass_a.drinks << :becks
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subklass_b = Class.new(@klass)
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assert_equal [:cabernet], @klass.drinks
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assert_equal [:cabernet, :becks], subklass_a.drinks
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assert_equal [:cabernet], subklass_b.drinks
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end
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should "not inherit attributes if we set explicitely" do
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@klass.drinks = [:cabernet]
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subklass = Class.new(@klass)
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subklass.drinks = [:merlot] # we only want merlot explicitely.
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assert_equal [:merlot], subklass.drinks # no :cabernet, here
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end
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end
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end
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