// Run this using JavaScriptTest.sh

var assert = require('assert');

var fs = require('fs');

var flatbuffers = require('../js/flatbuffers').flatbuffers;

var MyGame = require('./monster_test_generated').MyGame;

function main() {

// First, let's test reading a FlatBuffer generated by C++ code:

// This file was generated from monsterdata_test.json

var data = new Uint8Array(fs.readFileSync('monsterdata_test.mon'));

// Now test it:

var bb = new flatbuffers.ByteBuffer(data);

testBuffer(bb);

// Second, let's create a FlatBuffer from scratch in JavaScript, and test it also.

// We use an initial size of 1 to exercise the reallocation algorithm,

// normally a size larger than the typical FlatBuffer you generate would be

// better for performance.

var fbb = new flatbuffers.Builder(1);

// We set up the same values as monsterdata.json:

var str = fbb.createString('MyMonster');

var inv = MyGame.Example.Monster.createInventoryVector(fbb, [0, 1, 2, 3, 4]);

var fred = fbb.createString('Fred');

MyGame.Example.Monster.startMonster(fbb);

MyGame.Example.Monster.addName(fbb, fred);

var mon2 = MyGame.Example.Monster.endMonster(fbb);

MyGame.Example.Monster.startTest4Vector(fbb, 2);

MyGame.Example.Test.createTest(fbb, 10, 20);

MyGame.Example.Test.createTest(fbb, 30, 40);

var test4 = fbb.endVector();

var testArrayOfString = MyGame.Example.Monster.createTestarrayofstringVector(fbb, [

fbb.createString('test1'),

fbb.createString('test2')

]);

MyGame.Example.Monster.startMonster(fbb);

MyGame.Example.Monster.addPos(fbb, MyGame.Example.Vec3.createVec3(fbb, 1, 2, 3, 3, MyGame.Example.Color.Green, 5, 6));

MyGame.Example.Monster.addHp(fbb, 80);

MyGame.Example.Monster.addName(fbb, str);

MyGame.Example.Monster.addInventory(fbb, inv);

MyGame.Example.Monster.addTestType(fbb, MyGame.Example.Any.Monster);

MyGame.Example.Monster.addTest(fbb, mon2);

MyGame.Example.Monster.addTest4(fbb, test4);

MyGame.Example.Monster.addTestarrayofstring(fbb, testArrayOfString);

MyGame.Example.Monster.addTestbool(fbb, false);

var mon = MyGame.Example.Monster.endMonster(fbb);

MyGame.Example.Monster.finishMonsterBuffer(fbb, mon);

// Write the result to a file for debugging purposes:

// Note that the binaries are not necessarily identical, since the JSON

// parser may serialize in a slightly different order than the above

// JavaScript code. They are functionally equivalent though.

fs.writeFileSync('monsterdata_javascript_wire.mon', new Buffer(fbb.asUint8Array()));

// Test it:

testBuffer(fbb.dataBuffer());

testUnicode();

fuzzTest1();

console.log('FlatBuffers test: completed successfully');

}

function testBuffer(bb) {

assert.ok(MyGame.Example.Monster.bufferHasIdentifier(bb));

var monster = MyGame.Example.Monster.getRootAsMonster(bb);

assert.strictEqual(monster.hp(), 80);

assert.strictEqual(monster.mana(), 150); // default

assert.strictEqual(monster.name(), 'MyMonster');

var pos = monster.pos();

assert.strictEqual(pos.x(), 1);

assert.strictEqual(pos.y(), 2);

assert.strictEqual(pos.z(), 3);

assert.strictEqual(pos.test1(), 3);

assert.strictEqual(pos.test2(), MyGame.Example.Color.Green);

var t = pos.test3();

assert.strictEqual(t.a(), 5);

assert.strictEqual(t.b(), 6);

assert.strictEqual(monster.testType(), MyGame.Example.Any.Monster);

var monster2 = new MyGame.Example.Monster();

assert.strictEqual(monster.test(monster2) != null, true);

assert.strictEqual(monster2.name(), 'Fred');

assert.strictEqual(monster.inventoryLength(), 5);

var invsum = 0;

for (var i = 0; i < monster.inventoryLength(); i++) {

invsum += monster.inventory(i);

}

assert.strictEqual(invsum, 10);

var test_0 = monster.test4(0);

var test_1 = monster.test4(1);

assert.strictEqual(monster.test4Length(), 2);

assert.strictEqual(test_0.a() + test_0.b() + test_1.a() + test_1.b(), 100);

assert.strictEqual(monster.testarrayofstringLength(), 2);

assert.strictEqual(monster.testarrayofstring(0), 'test1');

assert.strictEqual(monster.testarrayofstring(1), 'test2');

assert.strictEqual(monster.testbool(), false);

}

function testUnicode() {

var correct = fs.readFileSync('unicode_test.mon');

var json = JSON.parse(fs.readFileSync('unicode_test.json', 'utf8'));

// Test reading

var bb = new flatbuffers.ByteBuffer(new Uint8Array(correct));

var monster = MyGame.Example.Monster.getRootAsMonster(bb);

assert.strictEqual(monster.name(), json.name);

assert.deepEqual(new Buffer(monster.name(flatbuffers.Encoding.UTF8_BYTES)), new Buffer(json.name));

assert.strictEqual(monster.testarrayoftablesLength(), json.testarrayoftables.length);

json.testarrayoftables.forEach(function(table, i) {

var value = monster.testarrayoftables(i);

assert.strictEqual(value.name(), table.name);

assert.deepEqual(new Buffer(value.name(flatbuffers.Encoding.UTF8_BYTES)), new Buffer(table.name));

});

assert.strictEqual(monster.testarrayofstringLength(), json.testarrayofstring.length);

json.testarrayofstring.forEach(function(string, i) {

assert.strictEqual(monster.testarrayofstring(i), string);

assert.deepEqual(new Buffer(monster.testarrayofstring(i, flatbuffers.Encoding.UTF8_BYTES)), new Buffer(string));

});

// Test writing

var fbb = new flatbuffers.Builder();

var name = fbb.createString(json.name);

var testarrayoftablesOffsets = json.testarrayoftables.map(function(table) {

var name = fbb.createString(new Uint8Array(new Buffer(table.name)));

MyGame.Example.Monster.startMonster(fbb);

MyGame.Example.Monster.addName(fbb, name);

return MyGame.Example.Monster.endMonster(fbb);

});

var testarrayoftablesOffset = MyGame.Example.Monster.createTestarrayoftablesVector(fbb,

testarrayoftablesOffsets);

var testarrayofstringOffset = MyGame.Example.Monster.createTestarrayofstringVector(fbb,

json.testarrayofstring.map(function(string) { return fbb.createString(string); }));

MyGame.Example.Monster.startMonster(fbb);

MyGame.Example.Monster.addTestarrayofstring(fbb, testarrayofstringOffset);

MyGame.Example.Monster.addTestarrayoftables(fbb, testarrayoftablesOffset);

MyGame.Example.Monster.addName(fbb, name);

MyGame.Example.Monster.finishMonsterBuffer(fbb, MyGame.Example.Monster.endMonster(fbb));

assert.deepEqual(new Buffer(fbb.asUint8Array()), correct);

}

var __imul = Math.imul ? Math.imul : function(a, b) {

var ah = a >> 16 & 65535;

var bh = b >> 16 & 65535;

var al = a & 65535;

var bl = b & 65535;

return al * bl + (ah * bl + al * bh << 16) | 0;

};

// Include simple random number generator to ensure results will be the

// same cross platform.

// http://en.wikipedia.org/wiki/Park%E2%80%93Miller_random_number_generator

var lcg_seed = 48271;

function lcg_rand() {

return lcg_seed = (__imul(lcg_seed, 279470273) >>> 0) % 4294967291;

}

function lcg_reset() {

lcg_seed = 48271;

}

// Converts a Field ID to a virtual table offset.

function fieldIndexToOffset(field_id) {

// Should correspond to what EndTable() below builds up.

var fixed_fields = 2; // Vtable size and Object Size.

return (field_id + fixed_fields) * 2;

}

// Low level stress/fuzz test: serialize/deserialize a variety of

// different kinds of data in different combinations

function fuzzTest1() {

// Values we're testing against: chosen to ensure no bits get chopped

// off anywhere, and also be different from eachother.

var bool_val = true;

var char_val = -127; // 0x81

var uchar_val = 0xFF;

var short_val = -32222; // 0x8222;

var ushort_val = 0xFEEE;

var int_val = 0x83333333 | 0;

var uint_val = 0xFDDDDDDD;

var long_val = new flatbuffers.Long(0x44444444, 0x84444444);

var ulong_val = new flatbuffers.Long(0xCCCCCCCC, 0xFCCCCCCC);

var float_val = new Float32Array([3.14159])[0];

var double_val = 3.14159265359;

var test_values_max = 11;

var fields_per_object = 4;

var num_fuzz_objects = 10000; // The higher, the more thorough :)

var builder = new flatbuffers.Builder();

lcg_reset(); // Keep it deterministic.

var objects = [];

// Generate num_fuzz_objects random objects each consisting of

// fields_per_object fields, each of a random type.

for (var i = 0; i < num_fuzz_objects; i++) {

builder.startObject(fields_per_object);

for (var f = 0; f < fields_per_object; f++) {

var choice = lcg_rand() % test_values_max;

switch (choice) {

case 0: builder.addFieldInt8(f, bool_val, 0); break;

case 1: builder.addFieldInt8(f, char_val, 0); break;

case 2: builder.addFieldInt8(f, uchar_val, 0); break;

case 3: builder.addFieldInt16(f, short_val, 0); break;

case 4: builder.addFieldInt16(f, ushort_val, 0); break;

case 5: builder.addFieldInt32(f, int_val, 0); break;

case 6: builder.addFieldInt32(f, uint_val, 0); break;

case 7: builder.addFieldInt64(f, long_val, flatbuffers.Long.ZERO); break;

case 8: builder.addFieldInt64(f, ulong_val, flatbuffers.Long.ZERO); break;

case 9: builder.addFieldFloat32(f, float_val, 0); break;

case 10: builder.addFieldFloat64(f, double_val, 0); break;

}

}

objects.push(builder.endObject());

}

builder.prep(8, 0); // Align whole buffer.

lcg_reset(); // Reset.

builder.finish(objects[objects.length - 1]);

var bytes = new Uint8Array(builder.asUint8Array());

var view = new DataView(bytes.buffer);

// Test that all objects we generated are readable and return the

// expected values. We generate random objects in the same order

// so this is deterministic.

for (var i = 0; i < num_fuzz_objects; i++) {

var offset = bytes.length - objects[i];

for (var f = 0; f < fields_per_object; f++) {

var choice = lcg_rand() % test_values_max;

var vtable_offset = fieldIndexToOffset(f);

var vtable = offset - view.getInt32(offset, true);

assert.ok(vtable_offset < view.getInt16(vtable, true));

var field_offset = offset + view.getInt16(vtable + vtable_offset, true);

switch (choice) {

case 0: assert.strictEqual(!!view.getInt8(field_offset), bool_val); break;

case 1: assert.strictEqual(view.getInt8(field_offset), char_val); break;

case 2: assert.strictEqual(view.getUint8(field_offset), uchar_val); break;

case 3: assert.strictEqual(view.getInt16(field_offset, true), short_val); break;

case 4: assert.strictEqual(view.getUint16(field_offset, true), ushort_val); break;

case 5: assert.strictEqual(view.getInt32(field_offset, true), int_val); break;

case 6: assert.strictEqual(view.getUint32(field_offset, true), uint_val); break;

case 7: assert.strictEqual(view.getInt32(field_offset, true), long_val.low); assert.strictEqual(view.getInt32(field_offset + 4, true), long_val.high); break;

case 8: assert.strictEqual(view.getInt32(field_offset, true), ulong_val.low); assert.strictEqual(view.getInt32(field_offset + 4, true), ulong_val.high); break;

case 9: assert.strictEqual(view.getFloat32(field_offset, true), float_val); break;

case 10: assert.strictEqual(view.getFloat64(field_offset, true), double_val); break;

}

}

}

}

main();