Files
factorio-clusterio/test/lib/factorio/exchange_string.js
T
Hornwitser bfe119eaa3 Flatten lib namespace
Move all functions and classes currently available through lib/name and
libName to be under a single flat namespace in lib.  This make
reorganising the lib namespace much simpler as the location of symbols
can move without breaking the consumers of lib.

The multi-entrypoint design was already problematic for the web plugin
system which couldn't effectively use it due to how webpack's shared
module system is awkward to set up with multiple entrypoints per package.
2023-07-28 16:03:29 +02:00

74 lines
2.1 KiB
JavaScript

"use strict";
const assert = require("assert").strict;
const zlib = require("zlib");
const lib = require("@clusterio/lib");
const testStrings = require("./test_strings");
// Simple linear congruential random number generator
class Random {
constructor(seed) {
this.prev = seed;
}
next() {
let curr = (1103515245 * this.prev + 12345) & 0x7fffffff;
this.prev = curr;
return curr >> 16;
}
}
describe("lib/factorio/exchange_string", function() {
describe("readMapExchangeString", function() {
it("should parse a valid string", function() {
let result = lib.readMapExchangeString(testStrings.default);
assert.equal(result.map_gen_settings.seed, 1234567890);
result = lib.readMapExchangeString(testStrings.modified);
assert.equal(result.checksum, 4092204126);
});
it("should handle malformed strings", function() {
assert.throws(
() => lib.readMapExchangeString("<<blah>>"),
new Error("Not a map exchange string")
);
assert.throws(
() => lib.readMapExchangeString(testStrings.default.slice(0, 100)),
new Error("Not a map exchange string")
);
assert.throws(
() => lib.readMapExchangeString(`>>>${Buffer.from("abk430ia404ah3b4").toString("base64")}<<<`),
new Error("Malformed map exchange string: zlib inflate failed")
);
for (let i = 0; i < 100; i++) {
let gen = new Random(i);
let size = gen.next() % 200 + 100;
let data = Buffer.alloc(size);
for (let j = 0; j < size; j++) {
data[j] = gen.next() % 256;
}
// eslint-disable-next-line node/no-sync
data = zlib.deflateSync(data);
assert.throws(
() => lib.readMapExchangeString(`>>>${data.toString("base64")}<<<`),
new Error("Malformed map exchange string: reached end before finishing parsing")
);
}
let pastEnd = Buffer.from(testStrings.default.replace(/><\n/g, ""), "base64");
// eslint-disable-next-line node/no-sync
pastEnd = zlib.deflateSync(Buffer.concat([zlib.inflateSync(pastEnd), Buffer.from("junk")]));
assert.throws(
() => lib.readMapExchangeString(`>>>${pastEnd.toString("base64")}<<<`),
new Error("Malformed map exchange string: data after end")
);
});
});
});