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unit tests for parser generator

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This commit is contained in:
Robin Appelman 2017-08-12 02:54:47 +02:00
commit d3b893223b
4 changed files with 100 additions and 6 deletions
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src/tests/unit/Parser/Packet/ParserGeneratorTest.ts Normal file
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import * as assert from 'assert';
import {make} from '../../../../Parser/Packet/ParserGenerator';
import {BitStream} from 'bit-buffer';
function getStream(data: string) {
const buffer = new Buffer(data);
return new BitStream(buffer);
}
function assertParser(definition: string, stream: BitStream, expected: any, length: number) {
const {parser} = make('packetName', definition);
expected.packetType = 'packetName';
const start = stream.index;
assert.deepEqual(expected, parser(stream));
assert.equal(length, stream.index - start, 'Unexpected number of bits consumed from stream');
}
suite('Parser generator', () => {
test('Empty parser', () => {
assertParser('', getStream('dummy'), {}, 0);
});
test('Fixed string', () => {
assertParser('foo{s3}', getStream('dummy'), {foo: 'dum'}, 3 * 8);
});
test('Null terminated string', () => {
assertParser('foo{s}', getStream('dummy'), {foo: 'dummy'}, 5 * 8);
});
test('Boolean', () => {
const stream = new BitStream(new ArrayBuffer(64));
stream.writeBoolean(1);
stream.writeBoolean(0);
stream.writeASCIIString('remaining');
stream.index = 0;
assertParser('foo{b}', stream, {foo: true}, 1);
assertParser('foo{b}', stream, {foo: false}, 1);
});
test('Unsigned Int', () => {
const stream = new BitStream(new ArrayBuffer(64));
stream.writeUint8(0b11111111);
stream.writeUint8(0b00001100);
stream.writeUint8(0b11111111);
stream.writeASCIIString('remaining');
stream.index = 0;
assertParser('foo{u2}', stream, {foo: 3}, 2);
assertParser('foo{u8}', stream, {foo: 0b00111111}, 8);
assertParser('foo{u12}', stream, {foo: 0b0000111111000011}, 12);
});
test('Signed Int', () => {
const stream = new BitStream(new ArrayBuffer(64));
stream.writeUint8(0b11111111);
stream.writeUint8(0b00001100);
stream.writeUint8(0b11111111);
stream.writeASCIIString('remaining');
stream.index = 0;
assertParser('foo{2}', stream, {foo: -1}, 2);
assertParser('foo{8}', stream, {foo: 63}, 8);
assertParser('foo{12}', stream, {foo: -61}, 12);
});
test('Variable length', () => {
const stream = new BitStream(new ArrayBuffer(64));
stream.writeUint8(0b11111111);
stream.writeUint8(0b00001100);
stream.writeASCIIString('remaining');
stream.index = 0;
assertParser('length{u2}foo{$length}', stream, {length: 3, foo: 7}, 5);
});
test('Float32', () => {
const stream = new BitStream(new ArrayBuffer(64));
stream.writeFloat32(12.234233856201172);
stream.writeASCIIString('remaining');
stream.index = 0;
assertParser('foo{f32}', stream, {foo: 12.234233856201172}, 32);
});
});