.toContain(item)
Use .toContain
when you want to check that an item is in an array. For testing the items in the array, this uses ===
, a strict equality check. .toContain
can also check whether a string is a substring of another string.
For example, if getAllFlavors()
returns an array of flavors and you want to be sure that lime
is in there, you can write:
test('the flavor list contains lime', () => {
expect(getAllFlavors()).toContain('lime');
});