-
Notifications
You must be signed in to change notification settings - Fork 86
/
findLastIndex.spec.js
48 lines (39 loc) · 1.09 KB
/
findLastIndex.spec.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
import { findLastIndex } from './findLastIndex.js'
test('happy', () => {
const result = findLastIndex(x => x > 1, [ 1, 1, 1, 2, 3, 4, 1 ])
expect(result).toBe(5)
expect(findLastIndex(x => x === 0, [ 0, 1, 1, 2, 3, 4, 1 ])).toBe(0)
})
test('with curry', () => {
expect(findLastIndex(x => x > 1)([ 1, 1, 1, 2, 3, 4, 1 ])).toBe(5)
})
const obj1 = { x : 100 }
const obj2 = { x : 200 }
const a = [ 11, 10, 9, 'cow', obj1, 8, 7, 100, 200, 300, obj2, 4, 3, 2, 1, 0 ]
const even = function (x){
return x % 2 === 0
}
const gt100 = function (x){
return x > 100
}
const isStr = function (x){
return typeof x === 'string'
}
const xGt100 = function (o){
return o && o.x > 100
}
test('ramda 1', () => {
expect(findLastIndex(even, a)).toBe(15)
expect(findLastIndex(gt100, a)).toBe(9)
expect(findLastIndex(isStr, a)).toBe(3)
expect(findLastIndex(xGt100, a)).toBe(10)
})
test('ramda 2', () => {
expect(findLastIndex(even, [ 'zing' ])).toBe(-1)
})
test('ramda 3', () => {
expect(findLastIndex(even, [ 2, 3, 5 ])).toBe(0)
})
test('ramda 4', () => {
expect(findLastIndex(even, [])).toBe(-1)
})