I got a function which receives two numbers (integer), returning an array with the firsts (numbers) multiple of (value) like countBy(value, number).
e.g.
countBy(1, 10) returns [1, 2, 3, 4, 5, 5, 7, 8, 9, 10]
countyBy(2, 5) returns [2, 4, 6, 8, 10]
So, what matcher should be used to test if the function receives only numbers (integer) ? I did a lot of tests but still did not find a solution.
it ('Verify if are received and returned only numbers', () => {
expect(typeof countBy(2, 5)).toBe('number');
});
Does anybody can give me a light?
try this
const targetArray = [1, 2, 3, 4, 5, 5, 7, 8, 9, 10];
test("Verify if are received and returned only numbers", () => {
targetArray.forEach((target) => {
expect(typeof target).toBe("number");
});
});