101 lines
3.8 KiB
JavaScript
101 lines
3.8 KiB
JavaScript
import assert from 'assert';
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import {Optional, uint8, DecodeStream, EncodeStream} from 'restructure';
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describe('Optional', function() {
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describe('decode', function() {
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it('should not decode when condition is falsy', function() {
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const stream = new DecodeStream(new Uint8Array([0]));
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const optional = new Optional(uint8, false);
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assert.equal(optional.decode(stream), null);
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assert.equal(stream.pos, 0);
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});
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it('should not decode when condition is a function and falsy', function() {
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const stream = new DecodeStream(new Uint8Array([0]));
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const optional = new Optional(uint8, function() { return false; });
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assert.equal(optional.decode(stream), null);
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assert.equal(stream.pos, 0);
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});
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it('should decode when condition is omitted', function() {
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const stream = new DecodeStream(new Uint8Array([0]));
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const optional = new Optional(uint8);
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assert(optional.decode(stream) != null);
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assert.equal(stream.pos, 1);
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});
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it('should decode when condition is truthy', function() {
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const stream = new DecodeStream(new Uint8Array([0]));
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const optional = new Optional(uint8, true);
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assert(optional.decode(stream) != null);
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assert.equal(stream.pos, 1);
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});
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it('should decode when condition is a function and truthy', function() {
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const stream = new DecodeStream(new Uint8Array([0]));
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const optional = new Optional(uint8, function() { return true; });
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assert(optional.decode(stream) != null);
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assert.equal(stream.pos, 1);
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});
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});
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describe('size', function() {
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it('should return 0 when condition is falsy', function() {
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const stream = new DecodeStream(new Uint8Array([0]));
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const optional = new Optional(uint8, false);
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assert.equal(optional.size(), 0);
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});
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it('should return 0 when condition is a function and falsy', function() {
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const stream = new DecodeStream(new Uint8Array([0]));
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const optional = new Optional(uint8, function() { return false; });
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assert.equal(optional.size(), 0);
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});
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it('should return given type size when condition is omitted', function() {
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const stream = new DecodeStream(new Uint8Array([0]));
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const optional = new Optional(uint8);
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assert.equal(optional.size(), 1);
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});
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it('should return given type size when condition is truthy', function() {
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const stream = new DecodeStream(new Uint8Array([0]));
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const optional = new Optional(uint8, true);
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assert.equal(optional.size(), 1);
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});
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it('should return given type size when condition is a function and truthy', function() {
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const stream = new DecodeStream(new Uint8Array([0]));
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const optional = new Optional(uint8, function() { return true; });
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assert.equal(optional.size(), 1);
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});
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});
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describe('encode', function() {
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it('should not encode when condition is falsy', function() {
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const optional = new Optional(uint8, false);
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assert.deepEqual(optional.toBuffer(128), new Uint8Array(0));
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});
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it('should not encode when condition is a function and falsy', function() {
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const optional = new Optional(uint8, function() { return false; });
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assert.deepEqual(optional.toBuffer(128), new Uint8Array(0));
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});
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it('should encode when condition is omitted', function() {
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const optional = new Optional(uint8);
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assert.deepEqual(optional.toBuffer(128), new Uint8Array([128]));
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});
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it('should encode when condition is truthy', function() {
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const optional = new Optional(uint8, true);
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assert.deepEqual(optional.toBuffer(128), new Uint8Array([128]));
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});
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it('should encode when condition is a function and truthy', function() {
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const optional = new Optional(uint8, function() { return true; });
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assert.deepEqual(optional.toBuffer(128), new Uint8Array([128]));
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});
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});
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});
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