63 lines
2.3 KiB
TypeScript
63 lines
2.3 KiB
TypeScript
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import { describe, expect, test } from "bun:test";
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import { bunEnv, bunExe, tempDir } from "harness";
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import path from "node:path";
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describe("process.stdout.end() flushes pending writes before callback", () => {
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test("large write followed by end() with process.exit in callback", async () => {
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using dir = tempDir("issue-25432", {
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"test.js": `
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const output = Buffer.alloc(200000, 120).toString() + "\\n";
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process.stdout.write(output);
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process.stdout.end(() => { process.exit(0); });
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`,
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});
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// Use a shell pipe to detect truncation — Bun.spawn's own pipe reader
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// doesn't reproduce the issue because it drains fully after child exit.
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const result = Bun.spawnSync({
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cmd: ["sh", "-c", `"${bunExe()}" "${path.join(String(dir), "test.js")}" 2>/dev/null | wc -c`],
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env: bunEnv,
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stdout: "pipe",
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stderr: "pipe",
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});
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const byteCount = parseInt(result.stdout.toString().trim(), 10);
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expect(byteCount).toBe(200001);
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expect(result.exitCode).toBe(0);
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});
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test("overridden write with .bind() pattern from issue", async () => {
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using dir = tempDir("issue-25432-bind", {
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"test.js": `
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const originalStdoutWrite = process.stdout.write.bind(process.stdout);
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process.stdout.write = function(chunk, ...args) {
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return process.stderr.write(chunk, ...args);
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};
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const output = JSON.stringify({
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items: Array.from({ length: 1000 }, (_, i) => ({
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id: i,
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name: "Item " + i,
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description: "Description for item " + i + " with extra padding text to increase total size.",
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metadata: { index: i, category: "Cat " + (i % 10) }
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}))
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}, null, 2);
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originalStdoutWrite(output);
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originalStdoutWrite("\\n");
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process.stdout.end(() => { process.exit(0); });
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`,
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});
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const result = Bun.spawnSync({
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cmd: ["sh", "-c", `"${bunExe()}" "${path.join(String(dir), "test.js")}" 2>/dev/null | wc -c`],
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env: bunEnv,
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stdout: "pipe",
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stderr: "pipe",
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});
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const byteCount = parseInt(result.stdout.toString().trim(), 10);
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// The JSON output should be ~216KB, not truncated at 64KB/128KB
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expect(byteCount).toBeGreaterThan(200000);
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expect(result.exitCode).toBe(0);
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});
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});
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