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1"use strict"
2
3var wcwidth = require('../')
4var test = require('tape')
5
6test('handles regular strings', function(t) {
7  t.strictEqual(wcwidth('abc'), 3)
8  t.end()
9})
10
11test('handles multibyte strings', function(t) {
12  t.strictEqual(wcwidth('字的模块'), 8)
13  t.end()
14})
15
16test('handles multibyte characters mixed with regular characters', function(t) {
17  t.strictEqual(wcwidth('abc 字的模块'), 12)
18  t.end()
19})
20
21test('ignores control characters e.g. \\n', function(t) {
22  t.strictEqual(wcwidth('abc\n字的模块\ndef'), 14)
23  t.end()
24})
25
26test('ignores bad input', function(t) {
27  t.strictEqual(wcwidth(''), 0)
28  t.strictEqual(wcwidth(3), 0)
29  t.strictEqual(wcwidth({}), 0)
30  t.strictEqual(wcwidth([]), 0)
31  t.strictEqual(wcwidth(), 0)
32  t.end()
33})
34
35test('ignores nul (charcode 0)', function(t) {
36  t.strictEqual(wcwidth(String.fromCharCode(0)), 0)
37  t.end()
38})
39
40test('ignores nul mixed with chars', function(t) {
41  t.strictEqual(wcwidth('a' + String.fromCharCode(0) + '\n字的'), 5)
42  t.end()
43})
44
45test('can have custom value for nul', function(t) {
46  t.strictEqual(wcwidth.config({
47    nul: 10
48  })(String.fromCharCode(0) + 'a字的'), 15)
49  t.end()
50})
51
52test('can have custom control char value', function(t) {
53  t.strictEqual(wcwidth.config({
54    control: 1
55  })('abc\n字的模块\ndef'), 16)
56  t.end()
57})
58
59test('negative custom control chars == -1', function(t) {
60  t.strictEqual(wcwidth.config({
61    control: -1
62  })('abc\n字的模块\ndef'), -1)
63  t.end()
64})
65