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local testCount = 0
local failCount = 0
local function test(msg, f)
testCount = testCount + 1
local success, error = xpcall(f, debug.traceback)
if success then
print(msg .. "\t\t[OK]")
else
failCount = failCount + 1
print(msg .. "\t\t[FAIL]")
print(error)
end
end
local ecs = require 'ecs'
--===== 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)
--===== SystemDb tests =====--
local SystemDb = ecs.SystemDb
test("addSystems() correctly sorts systems", function()
local sdb = SystemDb(nil)
local str = ""
local c = ecs.System("c", function(db, dt, params)
str = str .. "c"
end)
local a = ecs.System("a", function(db, dt, params)
str = str .. "a"
end)
local b = ecs.System("b", function(db, dt, params)
str = str .. "b"
end)
b:addDependency(a)
c:addDependency(b)
sdb:addSystems({c, a, b}, nil)
sdb:update(0)
assert(str == "abc")
end)
test("addSystems() fails on dependency loop", function()
local a = ecs.System("a", nil)
local b = ecs.System("b", nil)
local c = ecs.System("c", nil)
a:addDependency(c)
b:addDependency(a)
c:addDependency(b)
sdb = SystemDb(nil)
local success = pcall(sdb,addSystems, sdb, {c, a, b}, nil)
assert(success == false)
end)
test("addSystems() correctly inserts additional systems", function()
local str = ""
local sdb = SystemDb(nil)
local c = ecs.System("c", function(db, dt, params)
str = str .. "c"
end)
local a = ecs.System("a", function(db, dt, params)
str = str .. "a"
end)
local b = ecs.System("b", function(db, dt, params)
str = str .. "b"
end)
b:addDependency(a)
c:addDependency(b)
sdb:addSystems({c, a, b}, nil)
local d = ecs.System("d", function(db, dt, params)
str = str .. "d"
end)
local e = ecs.System("e", function(db, dt, params)
str = str .. "e"
end)
d:addDependency(c)
e:addDependency(d)
sdb:addSystems({e, d}, nil)
sdb:update(0)
assert(str == "abcde")
end)
test("addSystems() correctly handles dangling dependencies", function()
local str = ""
local sdb = SystemDb(nil)
local c = ecs.System("c", function(db, dt, params)
str = str .. "c"
end)
local a = ecs.System("a", function(db, dt, params)
str = str .. "a"
end)
local b = ecs.System("b", function(db, dt, params)
str = str .. "b"
end)
b:addDependency(a)
c:addDependency(b)
local d = ecs.System("d", function(db, dt, params)
str = str .. "d"
end)
local e = ecs.System("e", function(db, dt, params)
str = str .. "e"
end)
d:addDependency(c)
e:addDependency(d)
sdb:addSystems({e, d}, nil)
local success = pcall(sdb.update, sdb, nil)
assert(success == false)
sdb:addSystems({c, a, b}, nil)
sdb:update(0)
assert(str == "abcde")
end)
test("removeSystem() correctly handles things", function()
local sdb = SystemDb(nil)
local num = 1
local two = ecs.System("x2", function(db, dt, p) num = num*2 end)
local three = ecs.System("x3", function(db, dt, p) num = num*3 end)
local five = ecs.System("x5", function(db, dt, p) num = num*5 end)
sdb:addSystems({two, three, five}, nil)
sdb:update(0)
assert(num == 30)
num = 1
sdb:removeSystems({three})
sdb:update(1)
assert(num == 10)
end)
print(string.format("ran %d tests, %d failed", testCount, failCount))
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