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// Copyright (C) 2022 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include <QtCore/QtCore>
#include <QtCore/private/qstdweb_p.h>
#include <qtwasmtestlib.h>
#include "emscripten.h"
using qstdweb::ArrayBuffer;
using qstdweb::Uint8Array;
using qstdweb::Blob;
using qstdweb::BlobIODevice;
using qstdweb::Uint8ArrayIODevice;
class WasmIoDevicesTest: public QObject
{
Q_OBJECT
private slots:
void blobIODevice();
void uint8ArrayIODevice();
};
// Creates a test arraybuffer with byte values [0..size] % 256 * 2
char testByteValue(int i) { return (i % 256) * 2; }
ArrayBuffer createTestArrayBuffer(int size)
{
ArrayBuffer buffer(size);
Uint8Array array(buffer);
for (int i = 0; i < size; ++i)
array.val().set(i, testByteValue(i));
return buffer;
}
void WasmIoDevicesTest::blobIODevice()
{
if (!qstdweb::canBlockCallingThread()) {
QtWasmTest::completeTestFunction(QtWasmTest::TestResult::Skip, "requires asyncify");
return;
}
// Create test buffer and BlobIODevice
const int bufferSize = 16;
BlobIODevice blobDevice(Blob::fromArrayBuffer(createTestArrayBuffer(bufferSize)));
// Read back byte for byte from the device
QWASMVERIFY(blobDevice.open(QIODevice::ReadOnly));
for (int i = 0; i < bufferSize; ++i) {
char byte;
blobDevice.seek(i);
blobDevice.read(&byte, 1);
QWASMCOMPARE(byte, testByteValue(i));
}
blobDevice.close();
QWASMVERIFY(!blobDevice.open(QIODevice::WriteOnly));
QWASMSUCCESS();
}
void WasmIoDevicesTest::uint8ArrayIODevice()
{
// Create test buffer and Uint8ArrayIODevice
const int bufferSize = 1024;
Uint8Array array(createTestArrayBuffer(bufferSize));
Uint8ArrayIODevice arrayDevice(array);
// Read back byte for byte from the device
QWASMVERIFY(arrayDevice.open(QIODevice::ReadWrite));
for (int i = 0; i < bufferSize; ++i) {
char byte;
arrayDevice.seek(i);
arrayDevice.read(&byte, 1);
QWASMCOMPARE(byte, testByteValue(i));
}
// Write a different set of bytes
QWASMCOMPARE(arrayDevice.seek(0), true);
for (int i = 0; i < bufferSize; ++i) {
char byte = testByteValue(i + 1);
arrayDevice.seek(i);
QWASMCOMPARE(arrayDevice.write(&byte, 1), 1);
}
// Verify that the original array was updated
QByteArray copy = QByteArray::fromEcmaUint8Array(array.val());
for (int i = 0; i < bufferSize; ++i)
QWASMCOMPARE(copy.at(i), testByteValue(i + 1));
arrayDevice.close();
QWASMSUCCESS();
}
int main(int argc, char **argv)
{
auto testObject = std::make_shared<WasmIoDevicesTest>();
QtWasmTest::initTestCase<QCoreApplication>(argc, argv, testObject);
return 0;
}
#include "iodevices_main.moc"
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