Wait for the file manager to finish copying every entry

tools/chatgui/tests/test_member_files_browser.cpp

@@ -180,11 +180,16 @@ private slots:
                 QPoint source = tree->viewport()->mapToGlobal(tree->visualItemRect(tree->topLevelItem(0)).center());
                 QFile control(nativeDestination + "/source-position"); QVERIFY(control.open(QIODevice::WriteOnly));
                 control.write(QByteArray::number(source.x()) + ' ' + QByteArray::number(source.y())); control.close();
-                QTRY_VERIFY_WITH_TIMEOUT(QFile::exists(nativeDestination + "/folder/many-119.txt"), 60000);
-                QFile received(nativeDestination + "/folder/nested/deep.txt"); QVERIFY(received.open(QIODevice::ReadOnly));
-                QCOMPARE(received.readAll(), QByteArray("folder/nested/deep.txt"));
-                QVERIFY(QFileInfo(nativeDestination + "/folder/empty").isDir());
-                QVERIFY(QFileInfo(nativeDestination + "/loose.txt").isFile());
+                auto allCopied = [&] {
+                    QStringList files{"loose.txt", "folder/inside.txt", "folder/nested/deep.txt"};
+                    for (int i = 0; i < 120; ++i) files.append(QString("folder/many-%1.txt").arg(i));
+                    for (const auto& path : files) {
+                        QFile received(nativeDestination + '/' + path);
+                        if (!received.open(QIODevice::ReadOnly) || received.readAll() != path.toUtf8()) return false;
+                    }
+                    return QFileInfo(nativeDestination + "/folder/empty").isDir();
+                };
+                QTRY_VERIFY_WITH_TIMEOUT(allCopied(), 60000);
                 QCOMPARE(transfers.size(), 126); // По три исходных файла и ещё 120 в native drag.
             }
             requestStarted = {}; transferStarted = {};