bun.sh/test/js/node/tty.test.ts

import { describe, it, expect } from "bun:test";
import { WriteStream } from "node:tty";

describe("WriteStream.prototype.getColorDepth", () => {
  it("iTerm ancient", () => {
    expect(
      WriteStream.prototype.getColorDepth.call(undefined, {
        TERM_PROGRAM: "iTerm.app",
      }),
    ).toBe(process.platform === "win32" ? 24 : 8);
  });

  it("iTerm modern", () => {
    expect(
      WriteStream.prototype.getColorDepth.call(undefined, {
        TERM_PROGRAM: "iTerm.app",
        TERM_PROGRAM_VERSION: 3,
      }),
    ).toBe(24);
  });

  it("empty", () => {
    expect(WriteStream.prototype.getColorDepth.call(undefined, {})).toBe(process.platform === "win32" ? 24 : 1);
  });
});