prefer-each.md

Pattern: Manual loops in test cases

Issue: -

Description

Using manual loops for test cases can be error-prone and reduce code clarity. The each method provides a cleaner way to write parameterized tests, improving readability and maintainability.

Examples

Example of incorrect code:

for (const item of items) {
  describe(item, () => {
    expect(item).toBe("foo");
  });
}

Example of correct code:

describe.each(items)("item", (item) => {
  expect(item).toBe("foo");
});