mirror of
https://github.com/kikito/middleclass.git
synced 2024-11-25 02:44:20 +00:00
81 lines
2.4 KiB
Lua
81 lines
2.4 KiB
Lua
local class = require 'middleclass'
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context('instanceOf', function()
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context('nils, integers, strings, tables, and functions', function()
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local o = Object:new()
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local primitives = {nil, 1, 'hello', {}, function() end}
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for _,primitive in pairs(primitives) do
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local theType = type(primitive)
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context('A ' .. theType, function()
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local f1 = function() return instanceOf(Object, primitive) end
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local f2 = function() return instanceOf(primitive, o) end
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local f3 = function() return instanceOf(primitive, primitive) end
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context('does not throw errors', function()
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test('instanceOf(Object, '.. theType ..')', function()
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assert_not_error(f1)
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end)
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test('instanceOf(' .. theType .. ', Object:new())', function()
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assert_not_error(f2)
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end)
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test('instanceOf(' .. theType .. ',' .. theType ..')', function()
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assert_not_error(f3)
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end)
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end)
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test('makes instanceOf return false', function()
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assert_false(f1())
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assert_false(f2())
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assert_false(f3())
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end)
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end)
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end
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end)
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context('An instance', function()
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local Class1 = class('Class1')
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local Class2 = class('Class2', Class1)
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local Class3 = class('Class3', Class2)
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local UnrelatedClass = class('Unrelated')
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local o1, o2, o3 = Class1:new(), Class2:new(), Class3:new()
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test('is instanceOf(Object)', function()
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assert_true(instanceOf(Object, o1))
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assert_true(instanceOf(Object, o2))
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assert_true(instanceOf(Object, o3))
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end)
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test('is instanceOf its class', function()
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assert_true(instanceOf(Class1, o1))
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assert_true(instanceOf(Class2, o2))
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assert_true(instanceOf(Class3, o3))
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end)
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test('is instanceOf its class\' superclasses', function()
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assert_true(instanceOf(Class1, o2))
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assert_true(instanceOf(Class1, o3))
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assert_true(instanceOf(Class2, o3))
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end)
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test('is not instanceOf its class\' subclasses', function()
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assert_false(instanceOf(Class2, o1))
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assert_false(instanceOf(Class3, o1))
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assert_false(instanceOf(Class3, o2))
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end)
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test('is not instanceOf an unrelated class', function()
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assert_false(instanceOf(UnrelatedClass, o1))
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assert_false(instanceOf(UnrelatedClass, o2))
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assert_false(instanceOf(UnrelatedClass, o3))
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end)
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end)
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end)
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