/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

#include "testrunner.h"

#include <QtTest/QtTest>

#include <QDir>

#include <stdio.h>

const char testCaseElement[] = "TestCase";

const char testFunctionElement[] = "TestFunction";

const char incidentElement[] = "Incident";

const char descriptionElement[] = "Description";

const char nameAttr[] = "name";

const char typeAttr[] = "type";

const char fileAttr[] = "file";

const char lineAttr[] = "line";

const char attrValueFail[] = "fail";

TestRunner::TestRunner(const QString& name, const QString& combinedOutputFileName)

: mTestCount(0),

  mParsingIncidentElement(false),

  mParsingDescriptionElement(false),

  mCurrentTestFailed(false),

  mCurrentTestFailureLine(0),

  mCombinedOutputFileName(combinedOutputFileName)

{

    mTestRunParams.append(name);

    mTestRunParams.append("-xml");

    mTestRunParams.append("-o");

    mHomeDir = QDir::homePath();

    mTestRunParams.append(QString()); // Initial result file name

    if (!mHomeDir.endsWith(QString::fromAscii("/")))

        mHomeDir += QString::fromAscii("/");

}

TestRunner::~TestRunner()

{

}

int TestRunner::runTests(QObject& testObject)

{

    QString className(testObject.metaObject()->className());

    printf("Running tests for %s ... ", className.toUtf8().data());

    QString resultFileName = mHomeDir + className + ".xml";

    mTestRunParams.replace(mTestRunParams.count()-1,resultFileName);

    int errorsBefore = mErrors.count();

    int error = QTest::qExec(&testObject, mTestRunParams);

    parse(resultFileName);

    mResultFiles.append(resultFileName);

    printf("Failures: %d\n",mErrors.count()-errorsBefore);

    fflush(stdout);

    return error;

}

void TestRunner::printResults()

{

    printf("\nTests executed: %d\n",mTestCount);

    if (mErrors.count() > 0) {

        printf("Failures (%d):\n", mErrors.count());

        foreach(QString error, mErrors) {

            printf("\n%s", error.toUtf8().data());

        }

        printf("\n");

    } else {

        printf("All passed.\n\n");

    }

    fflush(stdout);

    combineResults();

}

void TestRunner::parse(const QString& fileName)

{

    QFile file(fileName);

    QXmlInputSource inputSource(&file);

    QXmlSimpleReader reader;

    reader.setContentHandler(this);

    reader.parse(inputSource);

}

bool TestRunner::startElement(

    const QString& /*namespaceURI*/, 

    const QString& /*localName*/, 

    const QString& qName, 

    const QXmlAttributes& atts)

{

    if (qName == QString::fromAscii(testFunctionElement)) {

        mTestCount++;

        mCurrentTestName = atts.value(QString::fromAscii(nameAttr));

        return true;

    }

    if (qName == QString::fromAscii(incidentElement)) {

        mParsingIncidentElement = true;

        if (atts.value(QString::fromAscii(typeAttr)) == QString::fromAscii(attrValueFail)) {

            mCurrentTestFailed = true;

            mCurrentTestFile = atts.value(QString::fromAscii(fileAttr));

            mCurrentTestFailureLine = atts.value(QString::fromAscii(lineAttr)).toInt();

        }

        return true;

    }

    mParsingDescriptionElement =

        (qName == QString::fromAscii(descriptionElement));

    return true;

}

bool TestRunner::endElement(

    const QString& /*namespaceURI*/,

    const QString& /*localName*/,

    const QString& qName)

{

    if (qName == QString::fromAscii(incidentElement)) {

        mParsingIncidentElement = false;

        mCurrentTestFailed = false;

        return true;

    }

    if (qName == QString::fromAscii(descriptionElement)) {

        mParsingDescriptionElement = false;

    }    

    return true;

}

bool TestRunner::characters(const QString& ch)

{

    if (mParsingIncidentElement && 

        mParsingDescriptionElement &&

        mCurrentTestFailed) {

        QByteArray testResult = mCurrentTestName.toAscii() + " failed:\n";

        testResult += "File: ";

        testResult += mCurrentTestFile.toAscii();

        testResult += "\n";

        testResult += "Line: ";

        testResult += QByteArray::number(mCurrentTestFailureLine);

        testResult += "\n";

        testResult += "Reason: ";

        testResult += ch.toAscii();

        testResult += "\n";

        mErrors.append(QString::fromAscii(testResult.data()));

    }

    return true;

}

void TestRunner::combineResults()

{

    if ( mCombinedOutputFileName.isEmpty() ){

        return;

    }

        mCombinedOutputFileName.prepend( mHomeDir );

    }

    QFile file(mCombinedOutputFileName);

    if (!file.open(QIODevice::WriteOnly)){

        return;

    }

    QXmlStreamWriter writer(&file);

    writer.setAutoFormatting(true);

    writer.writeStartDocument();

    QString caseName;

    foreach ( QString resultFile, mResultFiles ){

        QFile readFile( resultFile );

        if ( resultFile != mCombinedOutputFileName && readFile.open(QIODevice::ReadOnly) ){

            QXmlStreamReader reader(&readFile);

            appendToXml(writer, reader, caseName);

            readFile.close();

        }

    }

    writer.writeEndDocument();

    file.close();

}

void TestRunner::appendToXml(QXmlStreamWriter& writer, QXmlStreamReader& reader, QString& caseName)

{

    while (!reader.atEnd()) {

        QXmlStreamReader::TokenType type = reader.readNext();

        if ( type == QXmlStreamReader::StartDocument  || 

             type == QXmlStreamReader::EndDocument ){

            // Ignored

        } else if ( reader.name() == testCaseElement ){

            if ( type == QXmlStreamReader::StartElement ){

                QString tempCaseName = reader.attributes().value(nameAttr).toString();

                if ( caseName.isEmpty() && type == QXmlStreamReader::StartElement){

                    writer.writeStartElement(testCaseElement);

                    writer.writeAttribute(nameAttr, mTestRunParams.at(0));

                }

                caseName = tempCaseName;

            }  

        } else if ( type == QXmlStreamReader::StartElement ) {

            if ( reader.name() == testFunctionElement ){

                QString tempFuncName = reader.attributes().value(nameAttr).toString();

                if ( !tempFuncName.isEmpty() ){

                    writer.writeStartElement(testFunctionElement);

                    writer.writeAttribute(nameAttr, caseName + "::" + tempFuncName);

                }

            } else {

                writer.writeCurrentToken( reader );

            }

        } else {

            writer.writeCurrentToken( reader );

        }

    }

}