Answers for "jest expect one or another"

2

jest assert if empty array

expect(expected).toEqual([])
Posted by: Guest on June-16-2020
3

expect any function jest

expect(something).toEqual(expect.any(Function))
Posted by: Guest on November-27-2020
0

Jest toContain

# 1. Use '.toContain' when you want to check that an item is in an array.
# 2 '.toContain' can also check whether a string is a substring of another string.
test('the flavor list contains lime', () => {
  expect(['lime', 'mangle']).toContain('lime');
});

test('the flavor list contains lime', () => {
  expect("lime juice").toContain('lime');
});
Posted by: Guest on November-23-2020

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