julian.kiedaischandClaude Opus 5.5
a4036f12a3
Where the Swift template departs from Java's filius.software.rip, Java's code rules: a learned route gets 16 hops at the router's next beacon after it expired (RIPTable.check), not when it expires; messages count from any source port; each router draws its pauses from a random of its own (Java: an unseeded Random per router), which the core seeds from the scenario and the router's id (ripSeed), so that the Java oracle can give it the same. A route of hop count 0 to each own network, the first beacon after a second, then every 25.2 to 35.2 s; a message per interface without the routes through it; a new route or a longer one from the same router sends at once; forwarding by the table alone, fewest hops before longest mask. Messages are read with Java's parser (javaIpCheck, javaParseInt, moved from fls to core for it). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
40 lines
1.5 KiB
TypeScript
40 lines
1.5 KiB
TypeScript
// IP.ipCheck as Java FILIUS runs it: every case in ip-check.cases.txt was run
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// through Java (ip-check.java.json, tools/java-oracle) and must come out the
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// same here.
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import { readFileSync } from 'node:fs';
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import { dirname, join } from 'node:path';
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import { fileURLToPath } from 'node:url';
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import { describe, expect, it } from 'vitest';
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import { javaIpCheck, javaParseInt } from '@mdg-filius/core';
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const here = dirname(fileURLToPath(import.meta.url));
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const measured = JSON.parse(readFileSync(join(here, 'ip-check.java.json'), 'utf8')) as [string, string | null][];
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/** The cases file's escapes: a backslash, `u` and four hex digits for one UTF-16 unit. */
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function unescape(line: string): string {
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return line.replace(/\\u([0-9a-fA-F]{4})/g, (_, hex: string) => String.fromCharCode(Number.parseInt(hex, 16)));
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}
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describe('javaIpCheck against Java', () => {
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it('covers every line of the cases file', () => {
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const lines = readFileSync(join(here, 'ip-check.cases.txt'), 'ascii').split('\n').slice(0, -1);
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expect(measured.map(([line]) => line)).toEqual(lines);
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});
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for (const [line, expected] of measured) {
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it(JSON.stringify(line), () => {
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expect(javaIpCheck(unescape(line))).toBe(expected);
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});
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}
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});
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describe('javaParseInt', () => {
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it('keeps to the int range', () => {
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expect(javaParseInt('2147483647')).toBe(2147483647);
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expect(javaParseInt('-2147483648')).toBe(-2147483648);
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expect(javaParseInt('2147483648')).toBeUndefined();
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expect(javaParseInt('-2147483649')).toBeUndefined();
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});
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});
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