import Core from "../lib/core";

const Patterns = Core.Patterns;

const BitString = Core.BitString;

import Enum from "../lib/enum";

import chai from 'chai';

var expect = chai.expect;

function is_match(pattern, expr, guard = () => true){

return Patterns.match_no_throw(pattern, expr, guard) != null;

}

describe('BitString', function(){

describe('creation', function(){

it('create properly', function(){

let bs = new BitString(BitString.integer(1));

expect(is_match(bs.value, [1])).to.equal(true);

bs = new BitString(BitString.binary("foo"));

expect(is_match(bs.value, [102, 111, 111])).to.equal(true);

bs = new BitString(BitString.integer(0), BitString.binary("foo"));

expect(is_match(bs.value, [0, 102, 111, 111])).to.equal(true);

bs = new BitString(BitString.float(3.14));

expect(is_match(bs.value, [64, 9, 30, 184, 81, 235, 133, 31])).to.equal(true);

bs = new BitString(BitString.signed(BitString.integer(-100)));

expect(is_match(bs.value, [156])).to.equal(true);

});

});

describe('UTF conversions', function(){

it('toUTF8Array', function(){

let bs = BitString.toUTF8Array("fo≈");

expect(is_match(bs, [102, 111, 226, 137, 136])).to.equal(true);

});

it('toUTF16Array', function(){

let bs = BitString.toUTF16Array("fo≈");

expect(is_match(bs, [0, 102, 0, 111, 34, 72])).to.equal(true);

});

it('toUTF32Array', function(){

let bs = BitString.toUTF32Array("fo≈");

expect(is_match(bs, [0, 0, 0, 102, 0, 0, 0, 111, 0, 0, 34, 72])).to.equal(true);

});

});

describe('Float conversions', function(){

it('float32ToBytes', function(){

let bs = BitString.float32ToBytes(3.14);

expect(is_match(bs, [64, 72, 245, 195])).to.equal(true);

});

it('float64ToBytes', function(){

let bs = BitString.float64ToBytes(3.14);

expect(is_match(bs, [64, 9, 30, 184, 81, 235, 133, 31])).to.equal(true);

});

});

});