Add qFormatLogMessage()

Export the former qMessageFormatString() as qFormatLogMessage(). This
allows custom message handlers to format their messages just like the
default message handler, taking qSetMessagePattern() /
QT_MESSAGE_PATTERN into account.

The method should arguably not add the '\n' at the end, which a follow
up commit will fix.

Change-Id: Ib2a9cfda91473df079daf03bf3197e6ac63e013e
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Alex Blasche <alexander.blasche@digia.com>

1 files changed, 61 insertions, 1 deletions

diff --git a/tests/auto/corelib/global/qlogging/tst_qlogging.cpp b/tests/auto/corelib/global/qlogging/tst_qlogging.cpp
index a8027a4157..1df5404995 100644
--- a/tests/auto/corelib/global/qlogging/tst_qlogging.cpp
+++ b/tests/auto/corelib/global/qlogging/tst_qlogging.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
 ** Copyright (C) 2014 Olivier Goffart <ogoffart@woboq.com>
 ** Contact: http://www.qt-project.org/legal
 **
@@ -68,6 +68,9 @@ private slots:
     void qMessagePattern();
     void setMessagePattern();
 
+    void formatLogMessage_data();
+    void formatLogMessage();
+
 private:
     QString m_appDir;
     QStringList m_baseEnvironment;
@@ -803,6 +806,63 @@ void tst_qmessagehandler::setMessagePattern()
 #endif // !QT_NO_PROCESS
 }
 
+Q_DECLARE_METATYPE(QtMsgType)
+
+void tst_qmessagehandler::formatLogMessage_data()
+{
+    QTest::addColumn<QString>("pattern");
+    QTest::addColumn<QString>("result");
+
+    QTest::addColumn<QtMsgType>("type");
+    QTest::addColumn<QByteArray>("file");
+    QTest::addColumn<int>("line");
+    QTest::addColumn<QByteArray>("function");
+    QTest::addColumn<QByteArray>("category");
+    QTest::addColumn<QString>("message");
+
+#define BA QByteArrayLiteral
+
+    QTest::newRow("basic") << "%{type} %{file} %{line} %{function} %{message}"
+                           << "debug main.cpp 1 func msg\n"
+                           << QtDebugMsg << BA("main.cpp") << 1 << BA("func") << BA("") << "msg";
+
+    // test the if conditions
+    QString format = "[%{if-debug}D%{endif}%{if-warning}W%{endif}%{if-critical}C%{endif}%{if-fatal}F%{endif}] %{if-category}%{category}: %{endif}%{message}";
+    QTest::newRow("if-debug")
+            << format << "[D] msg\n"
+            << QtDebugMsg << BA("") << 0 << BA("func") << QByteArray() << "msg";
+    QTest::newRow("if_warning")
+            << format << "[W] msg\n"
+            << QtWarningMsg << BA("") << 0 << BA("func") << QByteArray() << "msg";
+    QTest::newRow("if_critical")
+            << format << "[C] msg\n"
+            << QtCriticalMsg << BA("") << 0 << BA("func") << QByteArray() << "msg";
+    QTest::newRow("if_fatal")
+            << format << "[F] msg\n"
+            << QtFatalMsg << BA("") << 0 << BA("func") << QByteArray() << "msg";
+    QTest::newRow("if_cat")
+            << format << "[F] cat: msg\n"
+            << QtFatalMsg << BA("") << 0 << BA("func") << BA("cat") << "msg";
+}
+
+void tst_qmessagehandler::formatLogMessage()
+{
+    QFETCH(QString, pattern);
+    QFETCH(QString, result);
+
+    QFETCH(QtMsgType, type);
+    QFETCH(QByteArray, file);
+    QFETCH(int, line);
+    QFETCH(QByteArray, function);
+    QFETCH(QByteArray, category);
+    QFETCH(QString, message);
+
+    qSetMessagePattern(pattern);
+    QMessageLogContext ctxt(file, line, function, category.isEmpty() ? 0 : category.data());
+    QString r = qFormatLogMessage(type, ctxt, message);
+    QCOMPARE(r, result);
+}
+
 
 QTEST_MAIN(tst_qmessagehandler)
 #include "tst_qlogging.moc"