[Jest] Restore the Original Implementation of a Mocked JavaScript Function with jest.spyOn

2021-02-02 10:18

阅读：700

标签：method class origin nal code ati original als span

We can use ‘jest.spyOn‘, similr to ‘spyOn‘ in Jasmine.

jest.spyOn(utils, ‘getWinner‘)

We get ‘getWinner‘ as a method.

Jest has mockImplementation:

// from

utils.getWinner = jest.fn((p1, p2) => p2)

// to

utils.getWinner.mockImplementation((p1, p2) => p2)

We can also do the cleanup after the test:

  // cleanup
  utils.getWinner.mockRestore()

[Jest] Restore the Original Implementation of a Mocked JavaScript Function with jest.spyOn

标签：method class origin nal code ati original als span

原文地址：https://www.cnblogs.com/Answer1215/p/12808917.html

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