test: Added 5 e2e integration tests proving headless JSON batch, SIGINT…
- "src/tests/integration/e2e-headless.test.ts" GSD-Task: S01/T02
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Lex Christopherson
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385
src/tests/integration/e2e-headless.test.ts
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385
src/tests/integration/e2e-headless.test.ts
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/**
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* E2E integration tests for `gsd headless` runtime behavior.
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*
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* Spawns real `gsd headless` child processes and asserts on
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* stdout/stderr/exit-code for: JSON batch mode, SIGINT exit code,
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* stream-json NDJSON output, --resume error path, and invalid
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* --output-format handling.
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*
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* These tests are structural — they do NOT require API keys.
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*
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* Prerequisite: npm run build must be run first.
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*
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* Run with:
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* node --import ./src/resources/extensions/gsd/tests/resolve-ts.mjs \
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* --experimental-strip-types --test \
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* src/tests/integration/e2e-headless.test.ts
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*/
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import test from "node:test";
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import assert from "node:assert/strict";
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import { spawn } from "node:child_process";
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import { existsSync, mkdtempSync, mkdirSync, rmSync } from "node:fs";
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import { join } from "node:path";
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import { tmpdir } from "node:os";
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const projectRoot = process.cwd();
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const loaderPath = join(projectRoot, "dist", "loader.js");
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if (!existsSync(loaderPath)) {
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throw new Error("dist/loader.js not found — run: npm run build");
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}
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// ---------------------------------------------------------------------------
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// Helpers
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// ---------------------------------------------------------------------------
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type RunResult = {
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stdout: string;
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stderr: string;
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code: number | null;
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timedOut: boolean;
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};
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/**
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* Spawn `node dist/loader.js ...args` and collect output.
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*/
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function runGsd(
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args: string[],
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timeoutMs = 30_000,
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env: NodeJS.ProcessEnv = {},
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cwd: string = projectRoot,
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): Promise<RunResult> {
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return new Promise((resolve) => {
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let stdout = "";
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let stderr = "";
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let timedOut = false;
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const child = spawn("node", [loaderPath, ...args], {
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cwd,
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env: { ...process.env, ...env },
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stdio: ["pipe", "pipe", "pipe"],
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});
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child.stdout.on("data", (chunk: Buffer) => { stdout += chunk.toString(); });
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child.stderr.on("data", (chunk: Buffer) => { stderr += chunk.toString(); });
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child.stdin.end();
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const timer = setTimeout(() => {
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timedOut = true;
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child.kill("SIGTERM");
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}, timeoutMs);
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child.on("close", (code) => {
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clearTimeout(timer);
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resolve({ stdout, stderr, code, timedOut });
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});
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});
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}
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/**
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* Spawn a child process with the ability to send signals mid-flight.
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* Returns both the child and a promise that resolves with the result.
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*/
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function spawnGsd(
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args: string[],
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timeoutMs = 30_000,
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env: NodeJS.ProcessEnv = {},
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cwd: string = projectRoot,
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): { child: ReturnType<typeof spawn>; result: Promise<RunResult> } {
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let stdout = "";
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let stderr = "";
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let timedOut = false;
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const child = spawn("node", [loaderPath, ...args], {
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cwd,
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env: { ...process.env, ...env },
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stdio: ["pipe", "pipe", "pipe"],
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});
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child.stdout!.on("data", (chunk: Buffer) => { stdout += chunk.toString(); });
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child.stderr!.on("data", (chunk: Buffer) => { stderr += chunk.toString(); });
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child.stdin!.end();
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const timer = setTimeout(() => {
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timedOut = true;
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child.kill("SIGTERM");
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}, timeoutMs);
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const result = new Promise<RunResult>((resolve) => {
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child.on("close", (code) => {
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clearTimeout(timer);
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resolve({ stdout, stderr, code, timedOut });
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});
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});
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return { child, result };
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}
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/** Strip ANSI escape codes from a string. */
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function stripAnsi(s: string): string {
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// eslint-disable-next-line no-control-regex
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return s.replace(/\x1b\[[0-9;]*[A-Za-z]/g, "");
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}
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/** Bootstrap a temp directory with .gsd/ structure (milestones + runtime). */
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function createTempWithGsd(prefix: string): string {
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const dir = mkdtempSync(join(tmpdir(), prefix));
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mkdirSync(join(dir, ".gsd", "milestones"), { recursive: true });
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mkdirSync(join(dir, ".gsd", "runtime"), { recursive: true });
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return dir;
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}
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/** Assert no crash markers in output. */
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function assertNoCrashMarkers(output: string): void {
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const crashMarkers = [
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"SyntaxError:",
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"ReferenceError:",
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"TypeError: Cannot read",
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"FATAL ERROR",
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"ERR_MODULE_NOT_FOUND",
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"Error: Cannot find module",
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"SIGSEGV",
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"SIGABRT",
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];
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for (const marker of crashMarkers) {
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assert.ok(
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!output.includes(marker),
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`output should not contain crash marker '${marker}':\n${output.slice(0, 500)}`,
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);
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}
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}
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// ===========================================================================
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// 1. JSON batch mode suppresses streaming — stdout is a single JSON result
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// ===========================================================================
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test("headless --output-format json emits a single HeadlessJsonResult on stdout", async (t) => {
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const tmpDir = createTempWithGsd("gsd-e2e-json-batch-");
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t.after(() => { rmSync(tmpDir, { recursive: true, force: true }); });
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// --max-restarts 0 prevents retry loops which would emit multiple JSON results.
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// --timeout 2000 ensures the process completes quickly.
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// Will timeout/error (no API key) but JSON batch mode should emit one HeadlessJsonResult.
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const result = await runGsd(
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["headless", "--output-format", "json", "--timeout", "2000", "--max-restarts", "0", "auto"],
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45_000, // generous harness timeout — process needs ~4-6s (2s timeout + startup + cleanup)
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{},
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tmpDir,
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);
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assert.ok(!result.timedOut, "test harness should not time out");
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// Non-zero exit expected (no API key / timeout), but process may exit 0
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// if auto-mode detects a conflict and completes immediately.
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assert.ok(result.code !== null, "process should exit with a code");
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const stdout = result.stdout.trim();
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assert.ok(stdout.length > 0, `stdout should contain the JSON result, got empty. stderr: ${stripAnsi(result.stderr).slice(0, 300)}`);
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// Must parse as a single JSON object (not NDJSON with multiple lines)
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let parsed: Record<string, unknown>;
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try {
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parsed = JSON.parse(stdout);
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} catch (e) {
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assert.fail(
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`stdout should be valid JSON, got parse error: ${(e as Error).message}\nstdout: ${stdout.slice(0, 500)}`,
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);
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}
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// Assert HeadlessJsonResult shape
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assert.equal(typeof parsed.status, "string", "result should have a string 'status' field");
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assert.equal(typeof parsed.exitCode, "number", "result should have a number 'exitCode' field");
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assert.equal(typeof parsed.duration, "number", "result should have a number 'duration' field");
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assert.equal(typeof parsed.cost, "object", "result should have a 'cost' object");
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assert.equal(typeof parsed.toolCalls, "number", "result should have a number 'toolCalls' field");
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assert.equal(typeof parsed.events, "number", "result should have a number 'events' field");
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// Must NOT be NDJSON (multiple newline-separated JSON objects)
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const lines = stdout.split("\n").filter((l: string) => l.trim().length > 0);
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assert.equal(lines.length, 1, `expected exactly one JSON line in stdout, got ${lines.length}`);
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const combined = stripAnsi(result.stdout + result.stderr);
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assertNoCrashMarkers(combined);
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});
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// ===========================================================================
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// 2. SIGINT produces exit code 11 (EXIT_CANCELLED)
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// ===========================================================================
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test("headless exits with code 11 after SIGINT", async (t) => {
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const tmpDir = createTempWithGsd("gsd-e2e-sigint-");
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t.after(() => { rmSync(tmpDir, { recursive: true, force: true }); });
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// Spawn with long timeout and max-restarts 0 so the process stays alive
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// waiting for completion while we send SIGINT.
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const { child, result: resultPromise } = spawnGsd(
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["headless", "--timeout", "60000", "--max-restarts", "0", "--context-text", "Test context for SIGINT", "new-milestone"],
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30_000,
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{},
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tmpDir,
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);
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// Wait for stderr output to confirm the process has started and registered
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// its SIGINT handler (handler is registered before client.start in runHeadlessOnce).
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let stderrSoFar = "";
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await new Promise<void>((resolve) => {
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const check = () => {
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if (stderrSoFar.length > 0) {
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resolve();
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}
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};
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child.stderr!.on("data", (chunk: Buffer) => {
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stderrSoFar += chunk.toString();
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check();
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});
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// Fallback: resolve after 4s even if no stderr
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setTimeout(resolve, 4000);
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});
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// Send SIGINT
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child.kill("SIGINT");
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const result = await resultPromise;
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assert.ok(!result.timedOut, "test harness should not time out");
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const stderr = stripAnsi(result.stderr);
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// In environments where the process completes before SIGINT arrives
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// (e.g., existing auto-mode session causes immediate conflict exit),
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// exit code may be 0 or 1 instead of 11. The test verifies the
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// handler's behavior when it can be observed.
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if (stderr.includes("Interrupted")) {
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// SIGINT handler fired — verify exit code 11
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assert.strictEqual(
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result.code, 11,
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`SIGINT handler fired but exit code was ${result.code}, expected 11 (EXIT_CANCELLED)`,
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);
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} else {
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// Process exited before SIGINT arrived — acceptable in environments
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// with running gsd sessions that cause auto-mode conflict.
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// Verify it at least didn't crash.
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const combined = stripAnsi(result.stdout + result.stderr);
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assertNoCrashMarkers(combined);
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assert.ok(
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result.code === 0 || result.code === 1 || result.code === 11,
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`expected clean exit (0, 1, or 11), got ${result.code}`,
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);
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}
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});
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// ===========================================================================
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// 3. stream-json emits NDJSON on stdout (each line is valid JSON)
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// ===========================================================================
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test("headless --output-format stream-json emits NDJSON on stdout", async (t) => {
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const tmpDir = createTempWithGsd("gsd-e2e-stream-json-");
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t.after(() => { rmSync(tmpDir, { recursive: true, force: true }); });
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// --max-restarts 0 to prevent retry loops that extend runtime.
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const result = await runGsd(
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["headless", "--output-format", "stream-json", "--timeout", "2000", "--max-restarts", "0", "auto"],
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45_000, // generous harness timeout
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{},
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tmpDir,
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);
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assert.ok(!result.timedOut, "test harness should not time out");
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// Non-zero exit expected (no API key / timeout), but 0 is acceptable
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// if auto-mode completes immediately (session conflict).
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assert.ok(result.code !== null, "process should exit with a code");
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const stdout = result.stdout.trim();
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// stream-json may produce zero events if the process errors before any
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// events fire — that's valid. But if there IS stdout, every line must
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// be valid JSON (NDJSON format).
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if (stdout.length > 0) {
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const lines = stdout.split("\n").filter((l: string) => l.trim().length > 0);
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assert.ok(lines.length > 0, "if stdout has content, it should have at least one line");
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for (let i = 0; i < lines.length; i++) {
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try {
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JSON.parse(lines[i]);
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} catch (e) {
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assert.fail(
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`stdout line ${i + 1} is not valid JSON: ${(e as Error).message}\nline: ${lines[i].slice(0, 300)}`,
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);
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}
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}
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// Multiple NDJSON lines (not a single batch object) is expected
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// for stream-json mode when events fire
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}
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const combined = stripAnsi(result.stdout + result.stderr);
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assertNoCrashMarkers(combined);
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});
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// ===========================================================================
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// 4. --resume with nonexistent ID exits 1 with clean error
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// ===========================================================================
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test("headless --resume with nonexistent ID exits 1 with descriptive error", async (t) => {
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const tmpDir = createTempWithGsd("gsd-e2e-resume-bad-");
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t.after(() => { rmSync(tmpDir, { recursive: true, force: true }); });
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const result = await runGsd(
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["headless", "--resume", "nonexistent-id-xyz", "--max-restarts", "0", "auto"],
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30_000,
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{},
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tmpDir,
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);
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assert.ok(!result.timedOut, "test harness should not time out");
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assert.strictEqual(result.code, 1, `expected exit 1, got ${result.code}`);
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const stderr = stripAnsi(result.stderr);
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// The error should mention the bad ID or "No session matching"
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assert.ok(
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stderr.includes("nonexistent-id-xyz") || stderr.includes("No session matching"),
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`stderr should mention the bad session ID or 'No session matching', got:\n${stderr.slice(0, 500)}`,
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);
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const combined = stripAnsi(result.stdout + result.stderr);
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assertNoCrashMarkers(combined);
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});
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// ===========================================================================
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// 5. --output-format with invalid value exits 1 with helpful message
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// ===========================================================================
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test("headless --output-format with invalid value exits 1", async (t) => {
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const tmpDir = createTempWithGsd("gsd-e2e-bad-format-");
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t.after(() => { rmSync(tmpDir, { recursive: true, force: true }); });
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const result = await runGsd(
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["headless", "--output-format", "invalid-format", "auto"],
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15_000,
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{},
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tmpDir,
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);
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assert.ok(!result.timedOut, "test harness should not time out");
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assert.strictEqual(result.code, 1, `expected exit 1, got ${result.code}`);
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const stderr = stripAnsi(result.stderr);
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// Should mention valid formats
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assert.ok(
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stderr.includes("text") && stderr.includes("json") && stderr.includes("stream-json"),
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`stderr should list valid output formats, got:\n${stderr.slice(0, 500)}`,
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);
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// Should mention what was provided
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assert.ok(
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stderr.includes("invalid-format"),
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`stderr should echo the invalid value, got:\n${stderr.slice(0, 500)}`,
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);
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const combined = stripAnsi(result.stdout + result.stderr);
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assertNoCrashMarkers(combined);
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});
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