CLI Prompts Test

Write e2e tests for CLI apps with ease.

Installation

 $ npm install --save-dev cli-prompts-test

API

runTest(args, answers, options?)

• args: CLI args to pass in.
• answers: answers to be passed to stdout (simulate user input).
• options: Optionally specify the testPath (defaults to process.cwd()) and timeout (defaults to 500ms) between keystrokes.

Usage

 // cli.js

const enquirer = require("enquirer");

const choices = ['First option', 'Second option', 'Third option'];

enquirer
  .prompt({
    type: "select",
    name: "option",
    message: "Choose from below",
    choices,
  })
  .then(({ option }) => {
    console.log(`You chose ${option}`);
  });

 // test.js

const runTest, { DOWN, ENTER } = require("cli-prompts-test");

const cliPath = `${__dirname}/cli.js`;

describe("cli-prompts-test", () => {
  it("picks first option", async () => {
    const { exitCode, stdout } = await runTest(
      [cliPath],
      [ENTER]
    );

    // Assertions
    expect(exitCode).toBe(0);
    expect(stdout).toContain("You chose First option");
  });

  it("picks second option", async () => {
    const { exitCode, stdout } = await runTest(
      [cliPath],
      [`${DOWN}${ENTER}`]
    );

    // Assertions
    expect(exitCode).toBe(0);
    expect(stdout).toContain("You chose Second option");
  });

  it("picks third option", async () => {
    const { exitCode, stdout } = await runTest(
      [cliPath],
      [`${DOWN}${DOWN}${ENTER}`]
    );

    // Assertions
    expect(exitCode).toBe(0);
    expect(stdout).toContain("You chose Third option");
  });
});

Find an example here.