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feat: add reactive()

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littensy 2025-11-18 20:39:37 -08:00
parent 7bad215560
commit bd23d54374
26 changed files with 1129 additions and 569 deletions
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48
packages/charm-sync/src/__tests__/patch.spec.luau
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@ -31,17 +31,17 @@ end)
test("returns a patch", function()
local prevState = { foo = "bar", baz = "qux" }
local nextState = { foo = "bar", baz = "quux" }
local patches = patch.diff(prevState, nextState)
local diffs = patch.diff(prevState, nextState)
assert(patches ~= nil, "should return a patch")
assert(patches.baz == "quux", "should return the changed value")
assert(patches.foo == nil, "should omit unchanged values")
assert(diffs ~= nil, "should return a patch")
assert(diffs.baz == "quux", "should return the changed value")
assert(diffs.foo == nil, "should omit unchanged values")
end)
test("applies a patch", function()
local prevState = { foo = "bar", baz = "qux" }
local patches = { baz = "quux", qaz = "qux" }
local applied = patch.apply(prevState, patches)
local diffs = { baz = "quux", qaz = "qux" }
local applied = patch.apply(prevState, diffs)
assert(applied ~= nil, "should return a new state")
assert(applied.baz == "quux", "should apply the changed value")
@ -49,11 +49,11 @@ test("applies a patch", function()
assert(applied.qaz == "qux", "should add the new value")
end)
test("allows nested patches", function()
test("allows nested diffs", function()
local prevState = { foo = { bar = "baz" } }
local nextState = { foo = { bar = "qux" } }
local patches = patch.diff(prevState, nextState)
local applied = patch.apply(prevState, patches)
local diffs = patch.diff(prevState, nextState)
local applied = patch.apply(prevState, diffs)
assert(applied.foo.bar == "qux", "should apply the nested patch")
end)
@ -78,8 +78,8 @@ test("preserves array density after serdes", function()
local prevState = { "a", "b", "c", "d", "e" }
local nextState = { "A", "b", "c", "D" }
local patches = mockArraySerdes(patch.diff(prevState, nextState))
local applied = patch.apply(prevState, patches)
local diffs = mockArraySerdes(patch.diff(prevState, nextState))
local applied = patch.apply(prevState, diffs)
for index in prevState do
assert(applied[index] == nextState[index], `expected {applied[index]} to be {nextState[index]}`)
@ -96,10 +96,10 @@ test("cannot preserve sparse arrays", function()
local prevState = {}
local nextState = { [2] = "foo" }
local patches = mockArraySerdes(patch.diff(prevState, nextState))
local applied = patch.apply(prevState, patches)
local diffs = mockArraySerdes(patch.diff(prevState, nextState))
local applied = patch.apply(prevState, diffs)
-- Not enough information is available to determine whether 'patches'
-- Not enough information is available to determine whether 'diffs'
-- should keep the string keys added during remote event serialization.
assert(applied["2"] ~= nil, "will fail to convert string keys to numbers")
assert(applied[2] == nil, "will fail to convert string keys to numbers")
@ -119,20 +119,12 @@ test("optionally fixes sparse arrays", function()
end
end)
test("optionally validates state", function()
local success = pcall(function()
config.validatePatches = true
patch.diff({}, { [1] = 1, a = true })
end)
assert(not success, "should not allow mixed tables")
success = pcall(function()
config.validatePatches = false
patch.diff({}, { [1] = 1, a = true })
end)
assert(success, "should skip validation if not requested")
test("patches mutable state", function()
local targetState: { [string]: string } = { foo = "bar", baz = "qux" }
patch.applyMutable(targetState, { baz = "quux", qaz = "qux" })
assert(targetState.baz == "quux", "should apply the changed value")
assert(targetState.foo == "bar", "should keep the unchanged value")
assert(targetState.qaz == "qux", "should add the new value")
end)
return {}