64 lines
1.4 KiB
JavaScript
64 lines
1.4 KiB
JavaScript
"use strict"
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var wcwidth = require('../')
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var test = require('tape')
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test('handles regular strings', function(t) {
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t.strictEqual(wcwidth('abc'), 3)
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t.end()
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})
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test('handles multibyte strings', function(t) {
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t.strictEqual(wcwidth('字的模块'), 8)
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t.end()
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})
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test('handles multibyte characters mixed with regular characters', function(t) {
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t.strictEqual(wcwidth('abc 字的模块'), 12)
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t.end()
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})
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test('ignores control characters e.g. \\n', function(t) {
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t.strictEqual(wcwidth('abc\n字的模块\ndef'), 14)
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t.end()
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})
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test('ignores bad input', function(t) {
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t.strictEqual(wcwidth(''), 0)
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t.strictEqual(wcwidth(3), 0)
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t.strictEqual(wcwidth({}), 0)
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t.strictEqual(wcwidth([]), 0)
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t.strictEqual(wcwidth(), 0)
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t.end()
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})
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test('ignores nul (charcode 0)', function(t) {
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t.strictEqual(wcwidth(String.fromCharCode(0)), 0)
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t.end()
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})
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test('ignores nul mixed with chars', function(t) {
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t.strictEqual(wcwidth('a' + String.fromCharCode(0) + '\n字的'), 5)
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t.end()
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})
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test('can have custom value for nul', function(t) {
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t.strictEqual(wcwidth.config({
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nul: 10
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})(String.fromCharCode(0) + 'a字的'), 15)
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t.end()
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})
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test('can have custom control char value', function(t) {
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t.strictEqual(wcwidth.config({
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control: 1
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})('abc\n字的模块\ndef'), 16)
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t.end()
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})
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test('negative custom control chars == -1', function(t) {
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t.strictEqual(wcwidth.config({
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control: -1
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})('abc\n字的模块\ndef'), -1)
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t.end()
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})
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