13 lines
504 B
JavaScript
13 lines
504 B
JavaScript
const expect = require('expect');
|
|
const groupBy = require('./groupBy.js');
|
|
|
|
test('groupBy is a Function', () => {
|
|
expect(groupBy).toBeInstanceOf(Function);
|
|
});
|
|
test('Groups the elements of an array based on the given function', () => {
|
|
expect(groupBy([6.1, 4.2, 6.3], Math.floor)).toEqual({4: [4.2], 6: [6.1, 6.3]});
|
|
});
|
|
test('Groups the elements of an array based on the given function', () => {
|
|
expect(groupBy(['one', 'two', 'three'], 'length')).toEqual({3: ['one', 'two'], 5: ['three']});
|
|
});
|