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f331dc4248
Tests for inherited __gc used to pass even without the feature being implemented, most likely because objects from previous tests got collected just in time.
109 lines
2.9 KiB
Lua
109 lines
2.9 KiB
Lua
local class = require 'middleclass'
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local it = require('busted').it
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local describe = require('busted').describe
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local before_each = require('busted').before_each
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local assert = require('busted').assert
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describe('Lua 5.3 Metamethods', function()
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local Vector, a, b, last_gc
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before_each(function()
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Vector= class('Vector')
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function Vector.initialize(a,x,y,z) a.x, a.y, a.z = x,y,z end
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function Vector.__eq(a,b) return a.x==b.x and a.y==b.y and a.z==b.z end
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function Vector.__pairs(a)
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local t = {x=a.x,y=a.y,z=a.z}
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return coroutine.wrap(function()
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for k,v in pairs(t) do
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coroutine.yield(k,v)
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end
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end)
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end
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function Vector.__len(a) return 3 end
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function Vector.__gc(a) last_gc = {a.class.name, a.x, a.y, a.z} end
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function Vector.__band(a,n) return a.class:new(a.x & n, a.y & n, a.z & n) end
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function Vector.__bor(a,n) return a.class:new(a.x | n, a.y | n, a.z | n) end
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function Vector.__bxor(a,n) return a.class:new(a.x ~ n, a.y ~ n, a.z ~ n) end
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function Vector.__shl(a,n) return a.class:new(a.x << n, a.y << n, a.z << n) end
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function Vector.__shr(a,n) return a.class:new(a.x >> n, a.y >> n, a.z >> n) end
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function Vector.__bnot(a) return a.class:new(~a.x, ~a.y, ~a.z) end
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a = Vector:new(1,2,3)
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b = Vector:new(2,4,6)
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end)
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it('implements __gc', function()
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collectgarbage()
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a = nil
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collectgarbage()
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assert.are.same(last_gc, {"Vector",1,2,3})
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end)
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it('implements __band', function()
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assert.equal(a & 1, Vector(1,0,1))
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end)
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it('implements __bor', function()
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assert.equal(a | 0, Vector(1,2,3))
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end)
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it('implements __bxor', function()
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assert.equal(a | 1, Vector(1,3,3))
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end)
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it('implements __shl', function()
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assert.equal(a << 1, Vector(2,4,6))
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end)
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it('implements __shr', function()
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assert.equal(a >> 1, Vector(0,1,1))
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end)
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it('implements __bnot', function()
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assert.equal(~a, Vector(-2,-3,-4))
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end)
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describe('Inherited Metamethods', function()
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local Vector2, c, d
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before_each(function()
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Vector2= class('Vector2', Vector)
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function Vector2:initialize(x,y,z) Vector.initialize(self,x,y,z) end
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c = Vector2:new(1,2,3)
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d = Vector2:new(2,4,6)
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end)
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it('implements __gc', function()
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collectgarbage()
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c = nil
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collectgarbage()
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assert.are.same(last_gc, {"Vector2",1,2,3})
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end)
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it('implements __band', function()
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assert.equal(c & 1, Vector2(1,0,1))
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end)
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it('implements __bor', function()
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assert.equal(c | 0, Vector2(1,2,3))
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end)
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it('implements __bxor', function()
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assert.equal(c | 1, Vector2(1,3,3))
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end)
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it('implements __shl', function()
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assert.equal(c << 1, Vector2(2,4,6))
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end)
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it('implements __shr', function()
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assert.equal(c >> 1, Vector2(0,1,1))
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end)
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it('implements __bnot', function()
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assert.equal(~c, Vector2(-2,-3,-4))
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end)
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end)
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end)
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