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local function test(msg, f)
local success, error = xpcall(f, debug.traceback)
if success then
print(msg .. "\t\t[OK]")
else
print(msg .. "\t\t[FAIL]")
print(error)
end
end
local ecs = require 'ecs'
--===== Component tests =====--
local Component = ecs.Component
test("factories work as expected", function()
local factory = Component.newFactory("health", { percent=100 })
local comp1 = factory()
assert(comp1.__type == "health", "bad component type for comp1")
assert(comp1.percent == 100, "bat percent for comp1")
local comp2 = factory{ percent=50 }
assert(comp2.__type == "health", "bad component type for comp2")
assert(comp2.percent == 50, "bad percent for comp2")
local success = pcall(function()
comp2.dne = 5
end)
assert(not success, "incorrectly succeeded in setting comp2.dne")
local success = pcall(function()
local comp3 = factory{ percent = 44, something = 2 }
end)
assert(not success, "incorrectly succeeded in creating comp3")
end)
test("components serialize as expected", function()
local position = Component.newFactory("position", { x=0, y=0, z=0 })
local comp = position{x=10, y=15, z=10}
local str = tostring(comp)
local tbl = (loadstring("return " .. str))()
assert(tbl.__type == "position", "bad type")
assert(tbl.x == 10, "bad x")
assert(tbl.y == 15, "bad y")
assert(tbl.z == 10, "bad z")
end)
test("components serialize successfully with subcomponents", function()
local position = Component.newFactory("position", { x=0, y=0, z=0 })
local player = Component.newFactory("player", { name="", position={} })
local p = player{ name="hannah", position=position{x=10, y=9, z=8} }
local tbl = (loadstring("return " .. tostring(p)))()
assert(tbl.__type == "player")
assert(tbl.name == "hannah")
assert(tbl.position.__type == "position")
assert(tbl.position.x == 10)
assert(tbl.position.y == 9)
assert(tbl.position.z == 8)
end)
--===== EntityDb tests =====--
local EntityDb = ecs.EntityDb
test("EntityDb.createEntity() always returns a new id", function()
local db = EntityDb()
local ids = {}
for i=1,100 do
local id = db:createEntity()
assert(ids[id] == nil, "id was already returned!")
ids[id] = true
end
end)
test("EntityDb.queryComponent() gets all entities with a given component", function()
local db = EntityDb()
local ids = {}
for i=1,100 do
local id = db:createEntity()
if i%2==0 then
ids[id] = 5*i
db:addComponent(id, "number", 5*i)
end
end
local query = db:queryComponent("number")
local count = 0
for id, number in pairs(query) do
count = count + 1
assert(number == ids[id])
end
assert(count == 50)
end)
test("EntityDb.queryEntity() gets all components associated with an entity", function()
local db = EntityDb()
local entity
for i=1,100 do
local id = db:createEntity()
if i%2 == 0 then db:addComponent(id, "number", 2) end
if i%3 == 0 then db:addComponent(id, "string", "hello") end
if i%5 == 0 then db:addComponent(id, "number2", 4) end
if i%7 == 0 then db:addComponent(id, "string2", "world") end
if i == 30 then entity=id end
end
local query = db:queryEntity(entity)
assert(query.number == 2)
assert(query.string == "hello")
assert(query.number2 == 4)
assert(query.string2 == nil)
end)
test("EntityDb.removeComponent() removes components correctly", function()
local db = EntityDb()
local id = db:createEntity()
db:addComponent(id, "number", 2)
db:addComponent(id, "string", "hello")
db:addComponent(id, "number2", 4)
db:addComponent(id, "string2", "world")
local query = db:queryEntity(id)
assert(query.number == 2)
assert(query.string == "hello")
assert(query.number2 == 4)
assert(query.string2 == "world")
db:removeComponent(id, "string2")
query = db:queryEntity(id)
assert(query.number == 2)
assert(query.string == "hello")
assert(query.number2 == 4)
assert(query.string2 == nil)
db:removeComponent(id, "number2")
query = db:queryEntity(id)
assert(query.number == 2)
assert(query.string == "hello")
assert(query.number2 == nil)
assert(query.string2 == nil)
db:removeComponent(id, "string")
query = db:queryEntity(id)
assert(query.number == 2)
assert(query.string == nil)
assert(query.number2 == nil)
assert(query.string2 == nil)
db:removeComponent(id, "number")
query = db:queryEntity(id)
assert(query.number == nil)
assert(query.string == nil)
assert(query.number2 == nil)
assert(query.string2 == nil)
end)
test("EntityDb.removeComponent() deletes component table when empty", function()
local db = EntityDb()
local id1 = db:createEntity()
local id2 = db:createEntity()
db:addComponent(id1, "number", 2)
db:addComponent(id2, "number", 3)
assert(db.components.number ~= nil)
db:removeComponent(id1, "number")
assert(db.components.number ~= nil)
db:removeComponent(id2, "number")
assert(db.components.number == nil)
end)
test("EntityDb.removeComponent() does nothing if the component is not present", function()
local db = EntityDb()
local id1 = db:createEntity()
local id2 = db:createEntity()
db:addComponent(id1, "number", 2)
db:addComponent(id2, "number", 3)
assert(db.components.number ~= nil)
db:removeComponent(id1, "number")
assert(db.components.number ~= nil)
db:removeComponent(id1, "number")
assert(db.components.number ~= nil)
db:removeComponent(id2, "number")
assert(db.components.number == nil)
end)
test("EntityDb.deleteEntity() correctly removes an entity", function()
local db = EntityDb()
local id1 = db:createEntity()
local id2 = db:createEntity()
db:addComponent(id1, "number", 2)
db:addComponent(id2, "number", 3)
local query = db:queryComponent("number")
assert(query[id1] and query[id2])
db:deleteEntity(id1)
query = db:queryComponent("number")
assert(query[id1] == nil)
assert(query[id2] ~= nil)
assert(false == pcall(function()
local query = db:queryEntity(id1)
end))
end)
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