37 lines
1.1 KiB
JavaScript
37 lines
1.1 KiB
JavaScript
const expect = require('expect');
|
|
const chunk = require('./chunk.js');
|
|
|
|
test('chunk is a Function', () => {
|
|
expect(chunk).toBeInstanceOf(Function);
|
|
});
|
|
test('chunk([1, 2, 3, 4, 5], 2) returns [[1,2],[3,4],[5]] ', () => {
|
|
expect(chunk([1, 2, 3, 4, 5], 2)).toEqual([[1,2],[3,4][5]]);
|
|
});
|
|
test('chunk([]) returns []', () => {
|
|
expect(chunk([])).toEqual([])
|
|
});
|
|
test('chunk(123) returns []', () => {
|
|
expect(chunk(123)).toEqual([])
|
|
});
|
|
test('chunk({ a: 123}) returns []', () => {
|
|
expect(chunk({ a: 123})).toEqual([])
|
|
});
|
|
test('chunk(string, 2) returns [ st, ri, ng ]', () => {
|
|
expect(chunk('string', 2)).toEqual( [ 'st', 'ri', 'ng' ])
|
|
});
|
|
test('chunk() throws an error', () => {
|
|
expect(chunk()).toThrow();
|
|
});
|
|
test('chunk(undefined) throws an error', () => {
|
|
expect(chunk(undefined)).toThrow();
|
|
});
|
|
test('chunk(null) throws an error', () => {
|
|
expect(chunk(null)).toThrow();
|
|
});
|
|
let start = new Date().getTime();
|
|
chunk('This is a string', 2);
|
|
let end = new Date().getTime();
|
|
test('chunk(This is a string, 2) takes less than 2s to run', () => {
|
|
expect((end - start) < 2000).toBeTruthy();
|
|
});
|