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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() })