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Add table.copy_with_metatables (#15754)

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Lars Müller 2025-03-14 11:52:42 +01:00 • committed by GitHub
parent 8717c7bd00
commit 077828d0d9
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4 changed files with 63 additions and 10 deletions
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29
builtin/common/tests/misc_helpers_spec.lua
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@ -178,6 +178,35 @@ describe("table", function()
assert.equal(2, table.keyof({[2] = "foo", [3] = "bar"}, "foo"))
assert.equal(3, table.keyof({[1] = "foo", [3] = "bar"}, "bar"))
end)
describe("copy()", function()
it("strips metatables", function()
local v = vector.new(1, 2, 3)
local w = table.copy(v)
assert.are_not.equal(v, w)
assert.same(v, w)
assert.equal(nil, getmetatable(w))
end)
it("preserves referential structure", function()
local t = {{}, {}}
t[1][1] = t[2]
t[2][1] = t[1]
local copy = table.copy(t)
assert.same(t, copy)
assert.equal(copy[1][1], copy[2])
assert.equal(copy[2][1], copy[1])
end)
end)
describe("copy_with_metatables()", function()
it("preserves metatables", function()
local v = vector.new(1, 2, 3)
local w = table.copy_with_metatables(v)
assert.equal(getmetatable(v), getmetatable(w))
assert(vector.check(w))
assert.equal(v, w) -- vector overrides ==
end)
end)
end)
describe("formspec_escape", function()