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'use strict';
const assert = require('assert').strict;
const Dashycode = require('./../../dist/lib/dashycode');
describe('Dashycode', () => {
const ascii = Array.from({ length: 0x80 }, (v, i) => i);
const iso88591 = Array.from({ length: 0x80 }, (v, i) => i + 0x80);
const utf16 = Array.from({ length: 0xFF00 }, (v, i) => i + 0x100);
const latinL = Array.from({ length: 26 }, (v, i) => i + 0x60);
const latinU = Array.from({ length: 26 }, (v, i) => i + 0x41);
const encoded = new Map();
const encode = codepoint => {
const character = String.fromCodePoint(codepoint);
const dashycode = Dashycode.encode(character);
assert.equal(encoded.has(dashycode), false);
encoded.set(dashycode, character);
};
const decode = dashycode => {
const character = Dashycode.decode(dashycode);
assert.equal(encoded.get(dashycode), character);
};
const transcode = plaintext => function () {
const ciphertext = Dashycode.encode(plaintext);
assert.equal(Dashycode.decode(ciphertext), plaintext);
};
const transcodeWithSets = (set1, set2) => function () {
for (let bitmask = 0; bitmask <= 0xFFFF; bitmask++) {
let plaintext = '';
for (let i = 0; i < 16; i++) {
plaintext += (bitmask & 1 << i) ? set1[i] : set2[i];
}
const ciphertext = Dashycode.encode(plaintext);
assert.equal(Dashycode.decode(ciphertext), plaintext);
}
};
it('should encode all codepoints uniquely', () => {
for (const codepoint of [...ascii, ...iso88591, ...utf16]) {
encode(codepoint);
}
});
it('should decode all codepoints accurately', () => {
for (const dashycode of encoded.keys()) {
decode(dashycode);
}
});
it('should transcode multiple spaces in a row', transcode('ayy lmao'));
it('should transcode strings beginning with a space', transcode(' ayy lmao'));
it('should transcode strings ending with a space', transcode('ayy lmao '));
it('should transcode UTF-16 surrogate pairs', transcode('\uDC00\uD800'));
it('should transcode mixtures of uppercase and lowercase characters', transcodeWithSets(latinL, latinU));
it('should transcode mixtures of alphanumeric and ASCII codepoints', transcodeWithSets(latinL, ascii));
it('should transcode mixtures of alphanumeric and ISO-8859-1 codepoints', transcodeWithSets(latinL, iso88591));
it('should transcode mixtures of alphanumeric and UTF-16 codepoints', transcodeWithSets(latinL, utf16));
it('should transcode mixtures of ASCII and ISO-8859-1 codepoints', transcodeWithSets(ascii, iso88591));
it('should transcode mixtures of ASCII and UTF-16 codepoints', transcodeWithSets(ascii, utf16));
it('should transcode mixtures of ISO-8859-1 and UTF-16 codepoints', transcodeWithSets(iso88591, utf16));
after(() => {
encoded.clear();
});
});
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