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