mirror of
https://github.com/bryanthaboi/gen1recomp
synced 2026-10-08 09:42:55 -04:00
bryanthaboi
56 lines
1.9 KiB
Lua
56 lines
1.9 KiB
Lua
package.path = "./?.lua;./?/init.lua;" .. package.path
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if not _G.love then _G.love = require("tests.love_stub") end
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local S = require("tests.harness").suite("RZIP compressed save")
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local check, eq = S.check, S.eq
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local SrmDecompress = require("src.import.SrmDecompress")
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love.data = love.data or {}
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local realDecompress = love.data.decompress
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love.data.decompress = function(_, _, cdata)
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return "D(" .. cdata .. ")"
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end
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local function le32(n)
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local b1 = n % 256; n = math.floor(n / 256)
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local b2 = n % 256; n = math.floor(n / 256)
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local b3 = n % 256; n = math.floor(n / 256)
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return string.char(b1, b2, b3, n % 256)
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end
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local function rzip(chunkSize, totalSize, chunks)
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local out = { "#RZIPv", string.char(1), "#",
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le32(chunkSize), le32(totalSize), le32(0) }
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for _, c in ipairs(chunks) do
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out[#out + 1] = le32(#c)
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out[#out + 1] = c
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end
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return table.concat(out)
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end
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local blob = rzip(131072, 131072, { "hello" })
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check(SrmDecompress.isCompressed(blob), "rzip header detected")
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check(not SrmDecompress.isCompressed("PK\3\4body"), "zip magic is not rzip")
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check(not SrmDecompress.isCompressed("RIP"), "too short to sniff")
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check(not SrmDecompress.isCompressed(nil), "nil is not rzip")
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local got, err = SrmDecompress.decompress(blob)
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eq(got, "D(hello)", "chunk ending exactly at EOF decompresses")
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eq(err, nil, "no error for exact-EOF chunk")
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local g2, e2 = SrmDecompress.decompress(blob:sub(1, #blob - 2))
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eq(g2, nil, "chunk claiming bytes past EOF rejected")
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eq(e2, "truncated chunk", "truncated error message")
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local two = rzip(4, 99, { "ab", "cd" })
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eq(SrmDecompress.decompress(two), "D(ab)D(cd)", "all chunks concatenated")
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local raw = string.rep("\255", 32768)
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local g3, e3 = SrmDecompress.decompress(raw)
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eq(g3, nil, "raw save not decompressible")
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eq(e3, "not compressed SRM", "raw save error message")
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love.data.decompress = realDecompress
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S.finish()
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