68 lines
1.6 KiB
JavaScript
68 lines
1.6 KiB
JavaScript
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"use strict";
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var test = require("tape");
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var getLength = require("./index");
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var browserGetLength = require("./browser");
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function repeat(string, times) {
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return new Array(times + 1).join(string);
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}
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// Test writing files to the fs
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//
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try {
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var blns = require("./vendor/big-list-of-naughty-strings/blns.json");
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}
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catch (err) {
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console.error("Error: Cannot load file './vendor/big-list-of-naughty-strings/blns.json'");
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console.error();
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console.error("Make sure you've initialized git submodules by running");
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console.error();
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console.error(" git submodule update --init");
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console.error();
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process.exit(1);
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}
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// 8-byte, 4-character string
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var THUMB = "👍🏽";
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// Tests run against both implementations
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[getLength, browserGetLength].forEach(function(getLength) {
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// Strings with known lengths
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[
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["", 0],
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["a", 1],
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["☃", 3],
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["a☃", 4],
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[repeat("a", 250) + '\uD800\uDC00', 254],
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[repeat("a", 251) + '\uD800\uDC00', 255],
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[repeat("a", 252) + '\uD800\uDC00', 256],
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[THUMB, 8],
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[THUMB[0], 3],
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[THUMB[1], 3],
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[THUMB[2], 3],
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[THUMB[3], 3],
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[THUMB.slice(0, 2), 4],
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[THUMB.slice(2, 4), 4],
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[THUMB.slice(1, 3), 6],
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].forEach(function(desc) {
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var string = desc[0];
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var length = desc[1];
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test(JSON.stringify(string) + "=" + length, function(t) {
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t.equal(getLength(string), length);
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t.end();
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});
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});
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// Make sure result matches Buffer.byteLength for various strings
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blns.forEach(function(str) {
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test(JSON.stringify(str), function(t) {
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t.equal(getLength(str), Buffer.byteLength(str));
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t.end();
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});
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});
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});
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