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local class = require 'middleclass'
describe('A Mixin', function()
local Mixin1, Mixin2, Class1, Class2
before_each(function()
Mixin1, Mixin2 = {},{}
function Mixin1:included(theClass) theClass.includesMixin1 = true end
function Mixin1:foo() return 'foo' end
function Mixin1:bar() return 'bar' end
Mixin1.static = {}
Mixin1.static.bazzz = function() return 'bazzz' end
function Mixin2:baz() return 'baz' end
Class1 = class('Class1'):include(Mixin1, Mixin2)
function Class1:foo() return 'foo1' end
Class2 = class('Class2', Class1)
function Class2:bar2() return 'bar2' end
end)
it('invokes the "included" method when included', function()
assert.is_true(Class1.includesMixin1)
end)
it('has all its functions (except "included") copied to its target class', function()
assert.equal(Class1:bar(), 'bar')
assert.is_nil(Class1.included)
end)
it('makes its functions available to subclasses', function()
assert.equal(Class2:baz(), 'baz')
end)
it('allows overriding of methods in the same class', function()
assert.equal(Class2:foo(), 'foo1')
end)
it('allows overriding of methods on subclasses', function()
assert.equal(Class2:bar2(), 'bar2')
end)
it('makes new static methods available in classes', function()
assert.equal(Class1:bazzz(), 'bazzz')
assert.equal(Class2:bazzz(), 'bazzz')
end)
end)
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