front_end/ui/legacy/components/object_ui/JavaScriptREPL.test.ts

// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import * as ObjectUI from './object_ui.js';

describe('JavaScriptREPL', () => {
  describe('wrapObjectLiteral', () => {
    const {wrapObjectLiteral} = ObjectUI.JavaScriptREPL.JavaScriptREPL;

    it('wraps simple object literals in parens', () => {
      assert.strictEqual(wrapObjectLiteral('{a: 10}'), '({a: 10})');
      assert.strictEqual(wrapObjectLiteral('{a:1, b:2}'), '({a:1, b:2})');
      assert.strictEqual(wrapObjectLiteral('{a: 10};'), '({a: 10})');
      assert.strictEqual(wrapObjectLiteral('\n { a: 10}\n;\n  ; '), '({a: 10})');
    });

    it('wraps nested object literals in parens', () => {
      assert.strictEqual(wrapObjectLiteral('{x: {y: {z: 1}}}'), '({x: {y: {z: 1}}})');
    });

    it('leaves object literals with syntax errors untouched', () => {
      assert.strictEqual(wrapObjectLiteral('{a: {}'), '{a: {}');
      assert.strictEqual(wrapObjectLiteral('{a: [}]};'), '{a: [}]};');
      assert.strictEqual(wrapObjectLiteral('{ a: 4 }),({ b: 7 }'), '{ a: 4 }),({ b: 7 }');
    });

    it('leaves blocks untouched', () => {
      assert.strictEqual(wrapObjectLiteral('{a = 10}'), '{a = 10}');
      assert.strictEqual(wrapObjectLiteral('{var a = 1; eval("{ a:1, b:2 }");}'), '{var a = 1; eval("{ a:1, b:2 }");}');
      assert.strictEqual(wrapObjectLiteral('{ for (var i = 0; i < 5; ++i); }'), '{ for (var i = 0; i < 5; ++i); }');
      assert.strictEqual(wrapObjectLiteral('{ let a = 4; a; }'), '{ let a = 4; a; }');
      assert.strictEqual(wrapObjectLiteral('{ let a = 4; }; { let b = 5; };'), '{ let a = 4; }; { let b = 5; };');
    });

    it('leaves expressions untouched', () => {
      assert.strictEqual(wrapObjectLiteral('{} + {}'), '{} + {}');
      assert.strictEqual(wrapObjectLiteral('{} + []'), '{} + []');
      assert.strictEqual(wrapObjectLiteral('{} + 2'), '{} + 2');
      assert.strictEqual(wrapObjectLiteral('{ a: 4 } + { a: 5 }'), '{ a: 4 } + { a: 5 }');
      assert.strictEqual(wrapObjectLiteral('{a: 1} + 2'), '{a: 1} + 2');
      assert.strictEqual(wrapObjectLiteral('{a: 1}, {b: 2}'), '{a: 1}, {b: 2}');
    });
  });
});