middleclass/spec/subclassOf_spec.lua

74 lines
2.3 KiB
Lua

require('MiddleClass')
context( 'subclassOf', function()
context( 'Primitives', function()
local primitives = {nil, 1, 'hello', {}, function() end}
for _,primitive in pairs(primitives) do
local theType = type(primitive)
context('A ' .. theType, function()
local f1 = function() return subclassOf(Object, primitive) end
local f2 = function() return subclassOf(primitive, o) end
local f3 = function() return subclassOf(primitive, primitive) end
context('should not throw errors', function()
test('subclassOf(Object, '.. theType ..')', function()
assert_not_error(f1)
end)
test('subclassOf(' .. theType .. ', Object:new())', function()
assert_not_error(f2)
end)
test('subclassOf(' .. theType .. ',' .. theType ..')', function()
assert_not_error(f3)
end)
end)
test('should make subclassOf return false', function()
assert_false(f1())
assert_false(f2())
assert_false(f3())
end)
end)
end -- for
end)
context( 'Any class (except Object)', function()
local Class1 = class('Class1')
local Class2 = class('Class2', Class1)
local Class3 = class('Class3', Class2)
local UnrelatedClass = class('Unrelated')
test('should be subclassOf(Object)', function()
assert_true(subclassOf(Object, Class1))
assert_true(subclassOf(Object, Class2))
assert_true(subclassOf(Object, Class3))
end)
test('should be subclassOf its direct superclass', function()
assert_true(subclassOf(Class1, Class2))
assert_true(subclassOf(Class2, Class3))
end)
test('should be subclassOf its ancestors', function()
assert_true(subclassOf(Class1, Class3))
end)
test('should not be an subclassOf its class\' subclasses', function()
assert_false(subclassOf(Class2, Class1))
assert_false(subclassOf(Class3, Class1))
assert_false(subclassOf(Class3, Class2))
end)
test('should not be an subclassOf an unrelated class', function()
assert_false(subclassOf(UnrelatedClass, Class1))
assert_false(subclassOf(UnrelatedClass, Class2))
assert_false(subclassOf(UnrelatedClass, Class3))
end)
end)
end)