testlib: Feed test log messages to Apple Unified Logging

QtTestLib uses its own message handler for plain text logging, so it doesn't
go though the logic in qDefaultMessageHandler that dispatches logging to
alternate logging sinks.

Building on the approach of Android and Windows, we log to AUL from the
plain text logger. A future improvement in this area would be to make
QtTestLib make more use of the infrastructure in qlogging.cpp, but this
is a bigger task and requires a better overview of the requirements.

The AUL code has been isolated into a wrapper, to allow logging both
to AUl and to e.g. the QPlainTextLogger. This is needed so that we
short circuit the plain text logger in case AUL already has handled
printing to stderr.

Change-Id: Iee0c3902190bd081b7ffbaf77c41b3118ce7f6da
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>

1 files changed, 96 insertions, 0 deletions

diff --git a/src/testlib/qappletestlogger_p.h b/src/testlib/qappletestlogger_p.h
new file mode 100644
index 0000000000..83bc679e03
--- /dev/null
+++ b/src/testlib/qappletestlogger_p.h
@@ -0,0 +1,96 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtTest module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** 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-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QAPPLETESTLOGGER_P_H
+#define QAPPLETESTLOGGER_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtTest/private/qabstracttestlogger_p.h>
+
+#include <QtCore/private/qcore_mac_p.h>
+
+QT_BEGIN_NAMESPACE
+
+#if defined(QT_USE_APPLE_UNIFIED_LOGGING)
+class QAppleTestLogger : public QAbstractTestLogger
+{
+public:
+    static bool debugLoggingEnabled();
+
+    QAppleTestLogger(QAbstractTestLogger *logger);
+
+    void startLogging() override
+    { m_logger->startLogging(); }
+    void stopLogging() override
+    { m_logger->stopLogging(); }
+
+    void enterTestFunction(const char *function) override;
+     void leaveTestFunction() override
+    { m_logger->leaveTestFunction(); }
+
+    void addIncident(IncidentTypes type, const char *description,
+                     const char *file = 0, int line = 0) override;
+    void addMessage(QtMsgType, const QMessageLogContext &,
+            const QString &) override;
+
+    void addBenchmarkResult(const QBenchmarkResult &result) override
+    { m_logger->addBenchmarkResult(result); }
+
+    void addMessage(MessageTypes type, const QString &message,
+                            const char *file = 0, int line = 0) override
+    { m_logger->addMessage(type, message, file, line); }
+
+private:
+    QScopedPointer<QAbstractTestLogger> m_logger;
+};
+#endif
+
+QT_END_NAMESPACE
+
+#endif // QAPPLETESTLOGGER_P_H