react-native/Libraries/LogBox/Data/__tests__/LogBoxLogParser-test.js

/**
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @emails oncall+react_native
 * @format
 * @flow strict-local
 */

'use strict';

jest.mock('../../../Core/Devtools/parseErrorStack', () => {
  return {__esModule: true, default: jest.fn(() => [])};
});

const LogBoxLogParser = require('../LogBoxLogParser').default;

describe('LogBoxLogParser', () => {
  it('parses strings', () => {
    expect(LogBoxLogParser({args: ['A']})).toEqual({
      componentStack: [],
      stack: [],
      category: 'A',
      message: {
        content: 'A',
        substitutions: [],
      },
    });
  });

  it('parses strings with arguments', () => {
    expect(LogBoxLogParser({args: ['A', 'B', 'C']})).toEqual({
      componentStack: [],
      stack: [],
      category: 'A B C',
      message: {
        content: 'A B C',
        substitutions: [],
      },
    });
  });

  it('parses formatted strings', () => {
    expect(LogBoxLogParser({args: ['%s', 'A']})).toEqual({
      componentStack: [],
      stack: [],
      category: '\ufeff%s',
      message: {
        content: 'A',
        substitutions: [
          {
            length: 1,
            offset: 0,
          },
        ],
      },
    });
  });

  it('parses formatted strings with insufficient arguments', () => {
    expect(LogBoxLogParser({args: ['%s %s', 'A']})).toEqual({
      componentStack: [],
      stack: [],
      category: '\ufeff%s %s',
      message: {
        content: 'A %s',
        substitutions: [
          {
            length: 1,
            offset: 0,
          },
          {
            length: 2,
            offset: 2,
          },
        ],
      },
    });
  });

  it('parses formatted strings with excess arguments', () => {
    expect(LogBoxLogParser({args: ['%s', 'A', 'B']})).toEqual({
      componentStack: [],
      stack: [],
      category: '\ufeff%s B',
      message: {
        content: 'A B',
        substitutions: [
          {
            length: 1,
            offset: 0,
          },
        ],
      },
    });
  });

  it('treats "%s" in arguments as literals', () => {
    expect(LogBoxLogParser({args: ['%s', '%s', 'A']})).toEqual({
      componentStack: [],
      stack: [],
      category: '\ufeff%s A',
      message: {
        content: '%s A',
        substitutions: [
          {
            length: 2,
            offset: 0,
          },
        ],
      },
    });
  });

  it('detects a component stack in the second argument', () => {
    expect(
      LogBoxLogParser({
        args: [
          'Some kind of message',
          '\n    in MyComponent (at filename.js:1)\n    in MyOtherComponent (at filename2.js:1)',
        ],
      }),
    ).toEqual({
      componentStack: [
        {component: 'MyComponent', location: 'filename.js:1'},
        {component: 'MyOtherComponent', location: 'filename2.js:1'},
      ],
      stack: [],
      category: 'Some kind of message',
      message: {
        content: 'Some kind of message',
        substitutions: [],
      },
    });
  });

  it('detects a component stack in the nth argument', () => {
    expect(
      LogBoxLogParser({
        args: [
          'Some kind of message',
          'Some other kind of message',
          '\n    in MyComponent (at filename.js:1)\n    in MyOtherComponent (at filename2.js:1)',
          'Some third kind of message',
        ],
      }),
    ).toEqual({
      componentStack: [
        {component: 'MyComponent', location: 'filename.js:1'},
        {component: 'MyOtherComponent', location: 'filename2.js:1'},
      ],
      stack: [],
      category:
        'Some kind of message Some other kind of message Some third kind of message',
      message: {
        content:
          'Some kind of message Some other kind of message Some third kind of message',
        substitutions: [],
      },
    });
  });
});