QmlProfiler: Test that attachToWaitingApplication tries to connect

Change-Id: Ic71cb60b70e9b68e455795511594a6be5739eb5f
Task-number: QTCREATORBUG-19496
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

src/plugins/qmlprofiler/tests/qmlprofilertool_test.cpp

@@ -0,0 +1,65 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt Creator.
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+****************************************************************************/
+
+#include "qmlprofilertool_test.h"
+
+#include <qmlprofiler/qmlprofilerclientmanager.h>
+#include <qmlprofiler/qmlprofilerattachdialog.h>
+#include <utils/url.h>
+
+#include <QTcpServer>
+#include <QtTest>
+
+namespace QmlProfiler {
+namespace Internal {
+
+void QmlProfilerToolTest::testAttachToWaitingApplication()
+{
+    QmlProfilerTool *profilerTool = QmlProfilerTool::instance();
+    QTcpServer server;
+    QUrl serverUrl = Utils::urlFromLocalHostAndFreePort();
+    QVERIFY(serverUrl.port() >= 0);
+    QVERIFY(serverUrl.port() <= std::numeric_limits<quint16>::max());
+    server.listen(QHostAddress(serverUrl.host()), static_cast<quint16>(serverUrl.port()));
+    QSignalSpy connectionSpy(&server, SIGNAL(newConnection()));
+
+    QTimer timer;
+    timer.setInterval(100);
+    connect(&timer, &QTimer::timeout, this, [&]() {
+        if (auto activeModal
+                = qobject_cast<QmlProfilerAttachDialog *>(QApplication::activeModalWidget())) {
+            activeModal->setPort(serverUrl.port());
+            activeModal->accept();
+        }
+    });
+
+    timer.start();
+    profilerTool->attachToWaitingApplication();
+
+    QTRY_VERIFY(connectionSpy.count() > 0);
+}
+
+} // namespace Internal
+} // namespace QmlProfiler