luau/bench/micro_tests/test_string_lib.lua

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local bench = script and require(script.Parent.bench_support) or pcall(require, "bench_support") or require("../bench_support")
bench.runCode(function()
local src = string.rep("abcdefghijklmnopqrstuvwxyz", 100)
local str = ""
for i=1,1000 do
str = string.upper(src)
str = string.reverse(str)
str = string.lower(str)
end
assert(#str)
end, "string: reverse/upper/lower (large)")
bench.runCode(function()
local str = ""
for i=1,100000 do
src = "abcdefghijklmnopqrstuvwxyz" .. i
str = string.upper(src)
str = string.reverse(str)
str = string.lower(str)
end
assert(#str)
end, "string: reverse/upper/lower (unique)")
bench.runCode(function()
local str = ""
for i=1,1000000 do
str = string.rep("_", 19)
end
assert(#str)
end, "string: rep (small)")
bench.runCode(function()
local str = ""
for i=1,100 do
str = string.rep("abcd", 100000)
end
assert(#str)
end, "string: rep (large)")