hyperframes/packages/cli/src/ui/progress.test.ts

import { afterEach, describe, expect, it } from "vitest";

import { renderProgress } from "./progress.js";

const originalWrite = process.stdout.write.bind(process.stdout);
const originalIsTTY = process.stdout.isTTY;

afterEach(() => {
  process.stdout.write = originalWrite;
  Object.defineProperty(process.stdout, "isTTY", {
    value: originalIsTTY,
    configurable: true,
  });
});

describe("renderProgress", () => {
  it("emits line-delimited updates when stdout is not a TTY", () => {
    let output = "";
    Object.defineProperty(process.stdout, "isTTY", {
      value: false,
      configurable: true,
    });
    process.stdout.write = ((chunk: string | Uint8Array) => {
      output += String(chunk);
      return true;
    }) as typeof process.stdout.write;

    renderProgress(42, "Capturing frames");

    expect(output).toMatch(/Capturing frames\n$/);
    expect(output).not.toContain("\r");
  });
});