Testing · Junior · Question 73 of 78

What does `test.each` / `it.each` do?

test.each([
  [1, 1, 2],
  [2, 3, 5],
])("add(%i, %i) = %i", (a, b, expected) => {
  expect(add(a, b)).toBe(expected);
});

✓Correct answer: Runs the same test with different data sets
2Runs a test for each file in the folder
3Repeats the test until it passes

Explanation

Parameterized tests remove copy-paste and make edge cases easy to add.

Further reading

Test yourself

Take the Testing · Junior quiz: questions and options are shuffled, and you get a review of your mistakes at the end.