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