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test(fragment): add baseBMP ARX decode regression tests #22

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Merged
baanish merged 2 commits into from
Apr 3, 2026
Merged

test(fragment): add baseBMP ARX decode regression tests #22

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test(fragment): add baseBMP ARX decode regression tests
baanish Mar 27, 2026
4288ffb
Merge remote-tracking branch 'origin/main' into claude/add-basebmp-ar…
baanish Apr 3, 2026
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32 changes: 31 additions & 1 deletion tests/fragment.test.ts
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Original file line number Diff line number Diff line change
@@ -1,7 +1,8 @@
import { describe, expect, it } from "vitest";
import { decodeFragment, encodeEnvelope } from "@/lib/payload/fragment";
import { decodeFragment, decodeFragmentAsync, encodeEnvelope } from "@/lib/payload/fragment";
import type { PayloadEnvelope } from "@/lib/payload/schema";
import { packEnvelope } from "@/lib/payload/wire-format";
import { arxCompressBMP, getActiveDictVersion } from "@/lib/payload/arx-codec";

const envelope: PayloadEnvelope = {
v: 1,
Expand Down Expand Up @@ -180,4 +181,33 @@ describe("fragment payload transport", () => {

expect(parsed.code).toBe("decoded-too-large");
});

it("decodes a baseBMP-encoded arx fragment (sync path)", async () => {

@kilo-code-bot kilo-code-bot Bot Mar 27, 2026

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SUGGESTION: Misleading test name — says "sync path" but uses decodeFragmentAsync. The sync decodeFragment explicitly rejects arx codec (see src/lib/payload/fragment.ts:321).

Suggested change
it("decodes a baseBMP-encoded arx fragment (sync path)", async () => {
it("decodes a baseBMP-encoded arx fragment (async path)", async () => {

const arxEnvelope: PayloadEnvelope = { ...envelope, codec: "arx" };
const json = JSON.stringify(packEnvelope(arxEnvelope));
const encoded = await arxCompressBMP(json);
const hash = `#agent-render=v1.arx.${getActiveDictVersion()}.${encoded}`;

const parsed = await decodeFragmentAsync(hash);

expect(parsed.ok).toBe(true);
if (!parsed.ok) return;

expect(parsed.envelope.title).toBe("Test bundle");
});

it("decodes a baseBMP arx fragment when BMP chars are percent-escaped", async () => {
const arxEnvelope: PayloadEnvelope = { ...envelope, codec: "arx" };
const json = JSON.stringify(packEnvelope(arxEnvelope));
const encoded = await arxCompressBMP(json);
const hash = `#agent-render=v1.arx.${getActiveDictVersion()}.${encoded}`;
const escapedHash = hash.replace(/[^\x00-\x7F]/g, (ch) => encodeURIComponent(ch));

const parsed = await decodeFragmentAsync(escapedHash);

expect(parsed.ok).toBe(true);
if (!parsed.ok) return;

expect(parsed.envelope.title).toBe("Test bundle");
});
});
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