roboomp
c2d6c8cf18
StdinBuffer held a bare `\x1b\x1b` chunk and timer-flushed it as one
sequence. `parseKey("\x1b\x1b")` returns undefined, so CustomEditor
fell through to the base editor and never fired the configured `onEscape` —
the double-escape gesture and the second-press single-Esc handler both went
dead whenever the terminal batched the two presses into one stdin read.
Split an exact bare `\x1b\x1b` into two ESC events only after the
flush window proves no follower arrived. If a follower does arrive, emit the
first ESC and restart parsing at the second ESC so legacy Alt chords
(`\x1bd`, `\x1b\x7f`) remain one downstream keypress. Meta-CSI/SS3
chords (`\x1b\x1b[A`, `\x1b\x1bO…`) still emit as one combined
sequence.
EventController.tool_execution_update re-armed the working loader when a
transient overlay (auto-compaction / auto-retry / handoff) had torn it down
mid-tool; tool_execution_end did not. A subagent (`task`) call only fires
_end, so a task result landing after such an overlay left the UI looking
idle even though the session was still streaming. Mirror the reconciler
call in #handleToolExecutionEnd.
Fixes #3857
594 lines
18 KiB
TypeScript
594 lines
18 KiB
TypeScript
/**
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* Tests for StdinBuffer
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*
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* Based on code from OpenTUI (https://github.com/anomalyco/opentui)
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* MIT License - Copyright (c) 2025 opentui
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*/
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import { afterEach, beforeEach, describe, expect, it } from "bun:test";
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import { setKittyProtocolActive } from "@oh-my-pi/pi-tui/keys";
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import { StdinBuffer } from "@oh-my-pi/pi-tui/stdin-buffer";
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describe("StdinBuffer", () => {
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let buffer: StdinBuffer;
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let emittedSequences: string[];
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beforeEach(() => {
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setKittyProtocolActive(false);
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buffer = new StdinBuffer({ timeout: 10 });
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// Collect emitted sequences
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emittedSequences = [];
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buffer.on("data", (sequence: string) => {
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emittedSequences.push(sequence);
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});
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});
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afterEach(() => {
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// Kill pending flush/watchdog timers: a stale timer from a prior test's
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// buffer would otherwise emit into the current test's emittedSequences
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// (the data listener closes over the reassigned module variable).
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buffer.destroy();
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setKittyProtocolActive(false);
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});
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// Helper to process data through the buffer
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function processInput(data: string | Buffer): void {
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buffer.process(data);
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}
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// Poll until `predicate` holds. Fixed sleeps race the flush timer chain
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// (timeout -> setTimeout(0) deferral): under parallel test load, an expired
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// sleep with an older deadline resolves before the deferral fires, so the
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// assertion would observe pre-flush state. The deadline only guards against
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// a hung test; the caller's expect() reports the real failure.
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async function waitUntil(predicate: () => boolean, timeoutMs = 2000): Promise<void> {
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const deadline = Date.now() + timeoutMs;
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while (!predicate() && Date.now() < deadline) {
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await Bun.sleep(2);
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}
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}
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describe("Regular Characters", () => {
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it("should handle unicode characters", () => {
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processInput("hello \u4e16\u754c");
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expect(emittedSequences).toEqual(["h", "e", "l", "l", "o", " ", "\u4e16", "\u754c"]);
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});
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it("emits surrogate-pair code points as one text sequence", () => {
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processInput("🙂");
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expect(emittedSequences).toEqual(["🙂"]);
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});
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});
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describe("Partial Escape Sequences", () => {
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it("should buffer incomplete mouse SGR sequence", () => {
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processInput("\x1b");
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expect(emittedSequences).toEqual([]);
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expect(buffer.getBuffer()).toBe("\x1b");
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processInput("[<35");
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expect(emittedSequences).toEqual([]);
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expect(buffer.getBuffer()).toBe("\x1b[<35");
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processInput(";20;5m");
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expect(emittedSequences).toEqual(["\x1b[<35;20;5m"]);
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expect(buffer.getBuffer()).toBe("");
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});
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it("should buffer incomplete CSI sequence", () => {
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processInput("\x1b[");
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expect(emittedSequences).toEqual([]);
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processInput("1;");
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expect(emittedSequences).toEqual([]);
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processInput("5H");
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expect(emittedSequences).toEqual(["\x1b[1;5H"]);
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});
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it("should buffer split across many chunks", () => {
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processInput("\x1b");
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processInput("[");
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processInput("<");
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processInput("3");
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processInput("5");
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processInput(";");
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processInput("2");
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processInput("0");
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processInput(";");
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processInput("5");
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processInput("m");
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expect(emittedSequences).toEqual(["\x1b[<35;20;5m"]);
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});
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it("should flush incomplete sequence after timeout", async () => {
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// Non-mouse CSI partial: ambiguous, so it flushes after the timeout.
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processInput("\x1b[1;5");
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expect(emittedSequences).toEqual([]);
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// Wait for the flush timeout to deliver the partial
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await waitUntil(() => emittedSequences.length > 0);
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expect(emittedSequences).toEqual(["\x1b[1;5"]);
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});
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it("should hold a split SGR mouse partial past the flush timeout and reassemble it", async () => {
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// `\x1b[<…` is unambiguously a mouse report: the partial must never
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// flush on timeout, or its tail leaks as typed text (settings search
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// filling with `[<35;8;16M`).
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processInput("\x1b[<35;8;16");
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await Bun.sleep(30);
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expect(emittedSequences).toEqual([]);
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processInput("M");
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expect(emittedSequences).toEqual(["\x1b[<35;8;16M"]);
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});
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it("should deliver a held mouse partial raw once the hold cap expires", async () => {
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const capped = new StdinBuffer({ timeout: 5, partialHoldTimeout: 20 });
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const emitted: string[] = [];
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capped.on("data", sequence => emitted.push(sequence));
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try {
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capped.process("\x1b[<35;8;16");
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await waitUntil(() => emitted.length > 0);
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// Tail never arrived: delivered as one raw sequence (ESC intact,
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// so downstream treats it as control data, not typed text).
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expect(emitted).toEqual(["\x1b[<35;8;16"]);
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} finally {
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capped.destroy();
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}
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});
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it("should hold a lone ESC while the kitty protocol is active and join the mouse tail", async () => {
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setKittyProtocolActive(true);
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try {
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// Under kitty the ESC key arrives as \x1b[27u, so a bare \x1b is
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// always the head of a split sequence.
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processInput("\x1b");
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await Bun.sleep(30);
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expect(emittedSequences).toEqual([]);
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processInput("[<35;8;16M");
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expect(emittedSequences).toEqual(["\x1b[<35;8;16M"]);
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} finally {
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setKittyProtocolActive(false);
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}
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});
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it("should flush a lone ESC after timeout when the kitty protocol is inactive", async () => {
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// Legacy terminals: a bare ESC is a real keypress and must not lag
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// behind the flush timeout by more than the deferral.
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processInput("\x1b");
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await waitUntil(() => emittedSequences.length > 0);
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expect(emittedSequences).toEqual(["\x1b"]);
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});
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});
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describe("Double-ESC disambiguation", () => {
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it("joins a held bare ESC with a following CSI into one meta sequence", async () => {
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processInput("\x1b");
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processInput("\x1b[B");
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await waitUntil(() => emittedSequences.length > 0);
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expect(emittedSequences).toEqual(["\x1b\x1b[B"]);
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});
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it("splits a bare ESC from a following SGR mouse report", async () => {
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processInput("\x1b");
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processInput("\x1b[<35;22;17M");
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await waitUntil(() => emittedSequences.length > 0);
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expect(emittedSequences).toEqual(["\x1b", "\x1b[<35;22;17M"]);
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});
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it("splits a trailing double-ESC into two ESC events after the timeout", async () => {
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// A bare `\x1b\x1b` is two real Esc keypresses (or legacy alt+esc).
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// `parseKey` returns undefined for the combined chunk, so emitting it
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// as one swallows double-escape gestures (#3857). Split on flush so
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// downstream handlers fire twice.
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processInput("\x1b\x1b");
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expect(emittedSequences).toEqual([]);
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await waitUntil(() => emittedSequences.length >= 2);
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expect(emittedSequences).toEqual(["\x1b", "\x1b"]);
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});
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it("preserves legacy Alt chords batched after a bare ESC", () => {
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processInput("\x1b\x1bX");
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expect(emittedSequences).toEqual(["\x1b", "\x1bX"]);
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emittedSequences = [];
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processInput("\x1b\x1bd");
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expect(emittedSequences).toEqual(["\x1b", "\x1bd"]);
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emittedSequences = [];
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processInput("\x1b\x1b\x7f");
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expect(emittedSequences).toEqual(["\x1b", "\x1b\x7f"]);
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});
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it("consumes a whole meta-CSI arrow in one chunk", () => {
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processInput("\x1b\x1b[A");
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expect(emittedSequences).toEqual(["\x1b\x1b[A"]);
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});
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});
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describe("Mixed Content", () => {
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it("should handle partial sequence with preceding characters", () => {
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processInput("abc\x1b[<35");
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expect(emittedSequences).toEqual(["a", "b", "c"]);
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expect(buffer.getBuffer()).toBe("\x1b[<35");
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processInput(";20;5m");
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expect(emittedSequences).toEqual(["a", "b", "c", "\x1b[<35;20;5m"]);
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});
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});
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describe("Kitty Keyboard Protocol", () => {
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it("should handle batched Kitty press and release", () => {
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// Press 'a', release 'a' batched together (common over SSH)
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processInput("\x1b[97u\x1b[97;1:3u");
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expect(emittedSequences).toEqual(["\x1b[97u", "\x1b[97;1:3u"]);
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});
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it("should handle multiple batched Kitty events", () => {
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// Press 'a', release 'a', press 'b', release 'b'
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processInput("\x1b[97u\x1b[97;1:3u\x1b[98u\x1b[98;1:3u");
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expect(emittedSequences).toEqual(["\x1b[97u", "\x1b[97;1:3u", "\x1b[98u", "\x1b[98;1:3u"]);
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});
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it("should handle Kitty functional keys with event type", () => {
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// Delete key release
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processInput("\x1b[3;1:3~");
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expect(emittedSequences).toEqual(["\x1b[3;1:3~"]);
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});
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it("should handle rapid typing simulation with Kitty protocol", () => {
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// Simulates typing "hi" quickly with releases interleaved
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processInput("\x1b[104u\x1b[104;1:3u\x1b[105u\x1b[105;1:3u");
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expect(emittedSequences).toEqual(["\x1b[104u", "\x1b[104;1:3u", "\x1b[105u", "\x1b[105;1:3u"]);
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});
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});
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describe("Kitty Printable Dedup Window", () => {
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it("swallows the immediate bare duplicate of a kitty printable", () => {
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// Buggy double-report: CSI-u event plus the bare char in one write.
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processInput("\x1b[97ua");
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expect(emittedSequences).toEqual(["\x1b[97u"]);
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});
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it("does not swallow a real keystroke after the dedup window expires", async () => {
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processInput("\x1b[97u");
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await Bun.sleep(50);
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processInput("a");
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expect(emittedSequences).toEqual(["\x1b[97u", "a"]);
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});
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});
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describe("Mouse Events", () => {
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it("should handle mouse press event", () => {
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processInput("\x1b[<0;10;5M");
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expect(emittedSequences).toEqual(["\x1b[<0;10;5M"]);
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});
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it("should handle mouse release event", () => {
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processInput("\x1b[<0;10;5m");
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expect(emittedSequences).toEqual(["\x1b[<0;10;5m"]);
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});
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it("should handle mouse move event", () => {
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processInput("\x1b[<35;20;5m");
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expect(emittedSequences).toEqual(["\x1b[<35;20;5m"]);
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});
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it("should handle split mouse events", () => {
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processInput("\x1b[<3");
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processInput("5;1");
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processInput("5;");
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processInput("10m");
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expect(emittedSequences).toEqual(["\x1b[<35;15;10m"]);
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});
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it("should handle multiple mouse events", () => {
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processInput("\x1b[<35;1;1m\x1b[<35;2;2m\x1b[<35;3;3m");
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expect(emittedSequences).toEqual(["\x1b[<35;1;1m", "\x1b[<35;2;2m", "\x1b[<35;3;3m"]);
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});
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it("should handle old-style mouse sequence (ESC[M + 3 bytes)", () => {
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processInput("\x1b[M abc");
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expect(emittedSequences).toEqual(["\x1b[M ab", "c"]);
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});
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it("should buffer incomplete old-style mouse sequence", () => {
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processInput("\x1b[M");
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expect(buffer.getBuffer()).toBe("\x1b[M");
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processInput(" a");
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expect(buffer.getBuffer()).toBe("\x1b[M a");
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processInput("b");
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expect(emittedSequences).toEqual(["\x1b[M ab"]);
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});
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});
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describe("Edge Cases", () => {
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it("should handle empty input", () => {
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processInput("");
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// Empty string emits an empty data event
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expect(emittedSequences).toEqual([""]);
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});
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it("should handle lone escape character with timeout", async () => {
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processInput("\x1b");
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expect(emittedSequences).toEqual([]);
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// After timeout, should emit
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await waitUntil(() => emittedSequences.length > 0);
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expect(emittedSequences).toEqual(["\x1b"]);
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});
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it("should handle lone escape character with explicit flush", () => {
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processInput("\x1b");
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expect(emittedSequences).toEqual([]);
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const flushed = buffer.flush();
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expect(flushed).toEqual(["\x1b"]);
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});
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it("should handle buffer input", () => {
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processInput(Buffer.from("\x1b[A"));
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expect(emittedSequences).toEqual(["\x1b[A"]);
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});
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it("should handle very long sequences", () => {
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const longSeq = `\x1b[${"1;".repeat(50)}H`;
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processInput(longSeq);
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expect(emittedSequences).toEqual([longSeq]);
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});
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});
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describe("Large Plain-Text Bursts", () => {
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it("splits a large non-bracketed burst into per-character events quickly", () => {
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// Pins the O(n) scan: the prior per-iteration slice/Array.from made
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// this O(n²) — a 64KB burst would blow the test timeout.
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const content = "0123456789abcdef".repeat(4096); // 64 KB
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processInput(content);
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expect(emittedSequences.length).toBe(content.length);
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expect(emittedSequences[0]).toBe("0");
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expect(emittedSequences[emittedSequences.length - 1]).toBe("f");
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});
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it("keeps escape parsing and surrogate pairs intact inside a burst", () => {
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processInput("abc🙂\x1b[A\u{1f389}def\x1b[<35;20;5m\x1b");
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expect(emittedSequences).toEqual([
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"a",
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"b",
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"c",
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"🙂",
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"\x1b[A",
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"\u{1f389}",
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"d",
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"e",
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"f",
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"\x1b[<35;20;5m",
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]);
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expect(buffer.getBuffer()).toBe("\x1b");
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});
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});
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describe("Flush", () => {
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it("should flush incomplete sequences", () => {
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processInput("\x1b[<35");
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const flushed = buffer.flush();
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expect(flushed).toEqual(["\x1b[<35"]);
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expect(buffer.getBuffer()).toBe("");
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});
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it("should return empty array if nothing to flush", () => {
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const flushed = buffer.flush();
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expect(flushed).toEqual([]);
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});
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it("should emit flushed data via timeout", async () => {
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processInput("\x1b[1;5");
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expect(emittedSequences).toEqual([]);
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// Wait for the flush timeout to deliver the partial
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await waitUntil(() => emittedSequences.length > 0);
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expect(emittedSequences).toEqual(["\x1b[1;5"]);
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});
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});
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describe("Clear", () => {
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it("should clear buffered content without emitting", () => {
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processInput("\x1b[<35");
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expect(buffer.getBuffer()).toBe("\x1b[<35");
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buffer.clear();
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expect(buffer.getBuffer()).toBe("");
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expect(emittedSequences).toEqual([]);
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});
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});
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describe("Bracketed Paste", () => {
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let emittedPaste: string[] = [];
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beforeEach(() => {
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buffer = new StdinBuffer({ timeout: 10 });
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// Collect emitted sequences
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emittedSequences = [];
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buffer.on("data", (sequence: string) => {
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emittedSequences.push(sequence);
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});
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// Collect paste events
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emittedPaste = [];
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buffer.on("paste", (data: string) => {
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emittedPaste.push(data);
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});
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});
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it("should emit paste event for complete bracketed paste", () => {
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const pasteStart = "\x1b[200~";
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const pasteEnd = "\x1b[201~";
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const content = "hello world";
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processInput(pasteStart + content + pasteEnd);
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expect(emittedPaste).toEqual(["hello world"]);
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expect(emittedSequences).toEqual([]); // No data events during paste
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});
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it("should handle paste arriving in chunks", () => {
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processInput("\x1b[200~");
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expect(emittedPaste).toEqual([]);
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processInput("hello ");
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expect(emittedPaste).toEqual([]);
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processInput("world\x1b[201~");
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expect(emittedPaste).toEqual(["hello world"]);
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expect(emittedSequences).toEqual([]);
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});
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it("should handle paste with input before and after", () => {
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processInput("a");
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processInput("\x1b[200~pasted\x1b[201~");
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processInput("b");
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expect(emittedSequences).toEqual(["a", "b"]);
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expect(emittedPaste).toEqual(["pasted"]);
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});
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it("should handle paste with newlines", () => {
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processInput("\x1b[200~line1\nline2\nline3\x1b[201~");
|
|
|
|
expect(emittedPaste).toEqual(["line1\nline2\nline3"]);
|
|
expect(emittedSequences).toEqual([]);
|
|
});
|
|
|
|
it("should handle paste with unicode", () => {
|
|
processInput("\x1b[200~Hello \u4e16\u754c \u{1f389}\x1b[201~");
|
|
|
|
expect(emittedPaste).toEqual(["Hello \u4e16\u754c \u{1f389}"]);
|
|
expect(emittedSequences).toEqual([]);
|
|
});
|
|
|
|
it("assembles paste when the end marker is split across chunks", () => {
|
|
processInput("\x1b[200~hello world\x1b[201");
|
|
expect(emittedPaste).toEqual([]);
|
|
|
|
processInput("~");
|
|
expect(emittedPaste).toEqual(["hello world"]);
|
|
expect(emittedSequences).toEqual([]);
|
|
});
|
|
|
|
it("assembles paste when the start and end markers arrive one byte at a time", () => {
|
|
for (const ch of "\x1b[200~ab\x1b[201~") {
|
|
processInput(ch);
|
|
}
|
|
expect(emittedPaste).toEqual(["ab"]);
|
|
expect(emittedSequences).toEqual([]);
|
|
});
|
|
|
|
it("preserves trailing input after a boundary-split end marker", () => {
|
|
processInput("\x1b[200~paste\x1b");
|
|
processInput("[201~x");
|
|
expect(emittedPaste).toEqual(["paste"]);
|
|
expect(emittedSequences).toEqual(["x"]);
|
|
});
|
|
|
|
it("does not end the paste on a partial end-marker prefix in the body", () => {
|
|
// Body contains the first five bytes of the end marker but no `~`.
|
|
processInput("\x1b[200~before\x1b[201");
|
|
expect(emittedPaste).toEqual([]);
|
|
|
|
processInput("after\x1b[201~");
|
|
expect(emittedPaste).toEqual(["before\x1b[201after"]);
|
|
expect(emittedSequences).toEqual([]);
|
|
});
|
|
|
|
it("reconstructs a large paste delivered in many small chunks", () => {
|
|
const content = "0123456789abcdef".repeat(8192); // 128 KB
|
|
processInput("\x1b[200~");
|
|
for (let i = 0; i < content.length; i += 64) {
|
|
processInput(content.slice(i, i + 64));
|
|
}
|
|
processInput("\x1b[201~");
|
|
|
|
expect(emittedPaste).toEqual([content]);
|
|
expect(emittedSequences).toEqual([]);
|
|
});
|
|
});
|
|
|
|
describe("Paste Recovery", () => {
|
|
it("recovers from a lost end marker via the inactivity watchdog", async () => {
|
|
buffer = new StdinBuffer({ timeout: 10, pasteTimeout: 20 });
|
|
const pastes: string[] = [];
|
|
const data: string[] = [];
|
|
buffer.on("paste", d => pastes.push(d));
|
|
buffer.on("data", s => data.push(s));
|
|
|
|
buffer.process("\x1b[200~lost marker content");
|
|
expect(pastes).toEqual([]);
|
|
|
|
await waitUntil(() => pastes.length > 0);
|
|
expect(pastes).toEqual(["lost marker content"]);
|
|
|
|
// Input is alive again after recovery.
|
|
buffer.process("a");
|
|
expect(data).toEqual(["a"]);
|
|
});
|
|
|
|
it("re-arms the watchdog while paste chunks keep arriving", async () => {
|
|
buffer = new StdinBuffer({ timeout: 10, pasteTimeout: 50 });
|
|
const pastes: string[] = [];
|
|
buffer.on("paste", d => pastes.push(d));
|
|
|
|
buffer.process("\x1b[200~part1 ");
|
|
await Bun.sleep(20);
|
|
buffer.process("part2");
|
|
await Bun.sleep(20);
|
|
expect(pastes).toEqual([]); // still inside the re-armed window
|
|
|
|
buffer.process("\x1b[201~");
|
|
expect(pastes).toEqual(["part1 part2"]);
|
|
});
|
|
|
|
it("aborts paste mode when the byte cap is exceeded", () => {
|
|
buffer = new StdinBuffer({ timeout: 10, pasteByteLimit: 8 });
|
|
const pastes: string[] = [];
|
|
const data: string[] = [];
|
|
buffer.on("paste", d => pastes.push(d));
|
|
buffer.on("data", s => data.push(s));
|
|
|
|
buffer.process("\x1b[200~0123456789abcdef");
|
|
expect(pastes).toEqual(["0123456789abcdef"]);
|
|
|
|
buffer.process("x");
|
|
expect(data).toEqual(["x"]);
|
|
});
|
|
});
|
|
|
|
describe("Destroy", () => {
|
|
it("should clear buffer on destroy", () => {
|
|
processInput("\x1b[<35");
|
|
expect(buffer.getBuffer()).toBe("\x1b[<35");
|
|
|
|
buffer.destroy();
|
|
expect(buffer.getBuffer()).toBe("");
|
|
});
|
|
|
|
it("should clear pending timeouts on destroy", async () => {
|
|
processInput("\x1b[<35");
|
|
buffer.destroy();
|
|
|
|
// Wait longer than timeout
|
|
await Bun.sleep(15);
|
|
|
|
// Should not have emitted anything
|
|
expect(emittedSequences).toEqual([]);
|
|
});
|
|
});
|
|
});
|