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refactor: start charm-sync rewrite

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littensy 2025-09-29 18:11:39 -07:00
parent 4a07297a13
commit 079abaacc1
18 changed files with 468 additions and 560 deletions
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69
packages/charm-sync/src/__tests__/client.spec.luau
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@ -1,19 +1,22 @@
local Charm = require("../../Charm")
local CharmSync = require("../")
local client = require("../client")
local suite = require("../../../../test/suite")
local atom = Charm.atom
local subscribe = Charm.subscribe
local client = CharmSync.client
local test = suite.test
local afterEach = suite.afterEach
afterEach(function()
client.clearAtoms()
end)
test("should sync state payload", function()
local a = atom(1)
local client = client({ atoms = { a = a } })
client:sync({
type = "init",
data = { a = 2 },
client.registerAtoms({ a = a })
client.applyPayloads({
{ type = "init", data = { a = 2 } },
})
assert(a() == 2, "should set a to the initial value")
@ -22,18 +25,16 @@ end)
test("should sync state patch", function()
local a = atom({ b = 1, c = 2 })
local previous = a()
local client = client({ atoms = { a = a } })
client:sync({
type = "init",
data = { a = a() },
client.registerAtoms({ a = a })
client.applyPayloads({
{ type = "init", data = { a = a() } },
})
assert(a() == previous, "should set a to the initial value")
client:sync({
type = "patch",
data = { a = { b = 3 } },
client.applyPayloads({
{ type = "patch", data = { a = { b = 3 } } },
})
assert(a() ~= previous, "should apply patch")
@ -43,19 +44,17 @@ end)
test("should fix sparse array patches", function()
local a = atom({ 1 })
local client = client({ atoms = { a = a } })
client:sync({
type = "init",
data = { a = a() },
client.registerAtoms({ a = a })
client.applyPayloads({
{ type = "init", data = { a = a() } },
})
-- This patch would be the result of a diff between { 1 } and { 1, 2 } that
-- was JSON-serialized and deserialized. The client should be able to catch
-- this and convert the string key back to a number.
client:sync({
type = "patch",
data = { a = { ["2"] = 2 } },
client.applyPayloads({
{ type = "patch", data = { a = { ["2"] = 2 } } },
})
assert(a()["2" :: any] == nil, "should convert serialized arrays to use numbers")
@ -64,24 +63,21 @@ end)
test("should apply multiple patches", function()
local a = atom(1)
local client = client({ atoms = { a = a } })
local calls = {}
client.registerAtoms({ a = a })
subscribe(a, function(value)
table.insert(calls, value)
end)
client:sync({
type = "init",
data = { a = a() },
client.applyPayloads({
{ type = "init", data = { a = a() } },
})
client:sync({
type = "patch",
data = { a = 2 },
}, {
type = "patch",
data = { a = 3 },
client.applyPayloads({
{ type = "patch", data = { a = 2 } },
{ type = "patch", data = { a = 3 } },
})
assert(a() == 3, "should apply the last patch")
@ -91,9 +87,10 @@ end)
test("should batch patches", function()
local a = atom(0)
local b = atom(0)
local client = client({ atoms = { a = a, b = b } })
local states = {}
client.registerAtoms({ a = a, b = b })
subscribe(a, function()
states.b = b()
end)
@ -102,14 +99,12 @@ test("should batch patches", function()
states.a = a()
end)
client:sync({
type = "init",
data = { a = a(), b = b() },
client.applyPayloads({
{ type = "init", data = { a = a(), b = b() } },
})
client:sync({
type = "patch",
data = { a = 1, b = 2 },
client.applyPayloads({
{ type = "patch", data = { a = 1, b = 2 } },
})
assert(a() == 1, "should set a to the new value")