Function tests

test/parallel/test-repl-preview.js:59–266

(options)

}

async function tests(options) {
  const repl = new REPLServer({
    prompt: PROMPT,
    stream: new REPLStream(),
    ignoreUndefined: true,
    useColors: true,
    ...options
  });

  repl.inputStream.run([
    'function foo(x) { return x; }',
    'function koo() { console.log("abc"); }',
    'a = undefined;',
  ]);

  const testCases = [{
    input: 'foo',
    noPreview: '[Function: foo]',
    preview: [
      'foo',
      '\x1B[90m[Function: foo]\x1B[39m\x1B[11G\x1B[1A\x1B[1B\x1B[2K\x1B[1A\r',
      '\x1B[36m[Function: foo]\x1B[39m',
    ]
  }, {
    input: 'koo',
    noPreview: '[Function: koo]',
    preview: [
      'k\x1B[90moo\x1B[39m\x1B[9G',
      '\x1B[90m[Function: koo]\x1B[39m\x1B[9G\x1B[1A\x1B[1B\x1B[2K\x1B[1A' +
        '\x1B[0Ko\x1B[90mo\x1B[39m\x1B[10G',
      '\x1B[90m[Function: koo]\x1B[39m\x1B[10G\x1B[1A\x1B[1B\x1B[2K\x1B[1A' +
        '\x1B[0Ko',
      '\x1B[90m[Function: koo]\x1B[39m\x1B[11G\x1B[1A\x1B[1B\x1B[2K\x1B[1A\r',
      '\x1B[36m[Function: koo]\x1B[39m',
    ]
  }, {
    input: 'a',
    noPreview: 'repl > ', // No "undefined" output.
    preview: ['a\r'] // No "undefined" preview.
  }, {
    input: " { b: 1 }['b'] === 1",
    noPreview: '\x1B[33mtrue\x1B[39m',
    preview: [
      " { b: 1 }['b']",
      '\x1B[90m1\x1B[39m\x1B[22G\x1B[1A\x1B[1B\x1B[2K\x1B[1A ',
      '\x1B[90m1\x1B[39m\x1B[23G\x1B[1A\x1B[1B\x1B[2K\x1B[1A=== 1',
      '\x1B[90mtrue\x1B[39m\x1B[28G\x1B[1A\x1B[1B\x1B[2K\x1B[1A\r',
      '\x1B[33mtrue\x1B[39m',
    ]
  }, {
    input: "{ b: 1 }['b'] === 1;",
    noPreview: '\x1B[33mfalse\x1B[39m',
    preview: [
      "{ b: 1 }['b']",
      '\x1B[90m1\x1B[39m\x1B[21G\x1B[1A\x1B[1B\x1B[2K\x1B[1A ',
      '\x1B[90m1\x1B[39m\x1B[22G\x1B[1A\x1B[1B\x1B[2K\x1B[1A=== 1',
      '\x1B[90mtrue\x1B[39m\x1B[27G\x1B[1A\x1B[1B\x1B[2K\x1B[1A;',
      '\x1B[90mfalse\x1B[39m\x1B[28G\x1B[1A\x1B[1B\x1B[2K\x1B[1A\r',