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ut_imageoperation.cpp
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/****************************************************************************************
**
** Copyright (C) 2013 Jolla Ltd.
** Contact: Marko Mattila <marko.mattila@jollamobile.com>
** All rights reserved.
**
** This file is part of Nemo Transfer Engine package.
**
** You may use this file under the terms of the GNU Lesser General
** Public License version 2.1 as published by the Free Software Foundation
** and appearing in the file license.lgpl included in the packaging
** of this file.
**
** This library is free software; you can redistribute it and/or
** modify it under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation
** and appearing in the file license.lgpl included in the packaging
** of this file.
**
** This library is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
** Lesser General Public License for more details.
**
****************************************************************************************/
#include "ut_imageoperation.h"
#include <qtest.h>
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#include <QuillMetadata>
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#include "imageoperation.h"
#include <QtDebug>
#include <QDir>
QString ut_imageoperation::createTestFile(const QString &fileName, bool writeContent)
{
QString f = QDir::tempPath() + QDir::separator() + fileName;
if (writeContent) {
QFile file(f);
file.open(QIODevice::WriteOnly);
const char * msg = "content";
file.write(msg, qstrlen(msg));
file.close();
}
return f;
}
void ut_imageoperation::testUniqueFilePath()
{
QStringList tempFiles;
tempFiles << createTestFile("img_001.jpg");
// Bad input
QCOMPARE(ImageOperation::uniqueFilePath(QString()), QString());
// Non existing file
QCOMPARE(ImageOperation::uniqueFilePath(QLatin1String("/home/nemo/Pictures/img_001.jpg")), QString());
// Existing file
QStringList tmp;
tmp << ImageOperation::uniqueFilePath(tempFiles.at(0));
QCOMPARE(tmp.last().endsWith(QLatin1String("_1.jpg")), true);
tmp.clear();
// Add two more files
tempFiles << createTestFile("img_002.jpg")
<< createTestFile("img_004.jpg");
// Create couple of temp files from the same source file. Note files must exists
// on a disk
tmp << ImageOperation::uniqueFilePath(tempFiles.at(2));
QFile::copy(tempFiles.at(2), tmp.last());
QCOMPARE(tmp.last().endsWith(QLatin1String("_1.jpg")), true);
tmp << ImageOperation::uniqueFilePath(tempFiles.at(2));
QFile::copy(tempFiles.at(2), tmp.last());
QCOMPARE(tmp.last().endsWith(QLatin1String("_2.jpg")), true);
// Remove the first file. This should handle the case that we are not getting
// a new temp file with _2.jpg as a suffix because this should take into account
// the removed files too.
QFile::remove(tmp.first());
QCOMPARE(ImageOperation::uniqueFilePath(tempFiles.at(2)).endsWith("_3.jpg"), true);
// Remove all the files generated for this test case
foreach(QString f, tmp) {
QFile::remove(f);
}
foreach(QString f, tempFiles) {
QFile::remove(f);
}
}
void ut_imageoperation::testScale()
{
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QImage img("images/testimage.jpg");
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QVERIFY(!img.isNull());
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QString filePath("images/testimage.jpg");
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QString target = ImageOperation::uniqueFilePath(filePath);
// Invalid sourceFile -> fail
QCOMPARE(ImageOperation::scaleImage("", 0.5, target), QString());
// Valid source file, invalid scaleFactor -> fail
QCOMPARE(ImageOperation::scaleImage(filePath, -1.0, target), QString());
QCOMPARE(ImageOperation::scaleImage(filePath, 0, target), QString());
QCOMPARE(ImageOperation::scaleImage(filePath, 1.0, target), QString());
// Proper source file, proper scale factor, proper target file
QString result = ImageOperation::scaleImage(filePath, 0.5, target);
QCOMPARE(result, target);
QImage resImage(result);
QCOMPARE(resImage.size(), img.size()*0.5);
QFile::remove(result);
result = ImageOperation::scaleImage(filePath, 0.1, target);
resImage.load(result);
QCOMPARE(resImage.size(), img.size()*0.1);
QFile::remove(result);
result = ImageOperation::scaleImage(filePath, 0.9, target);
resImage.load(result);
QVERIFY(qAbs(resImage.width() - img.width()*0.9) < 2);
QVERIFY(qAbs(resImage.height() - img.height()*0.9) < 2);
QFile::remove(result);
}
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void ut_imageoperation::testScaleToSize()
{
QImage img("images/testimage.jpg");
QVERIFY(!img.isNull());
QString filePath("images/testimage.jpg");
QString target = ImageOperation::uniqueFilePath(filePath);
QFileInfo f("images/testimage.jpg");
int targetSize = f.size() * 0.5;
// Invalid sourceFile -> fail
QCOMPARE(ImageOperation::scaleImageToSize("", targetSize, target), QString());
// Valid source file, invalid targetSize -> fail
QCOMPARE(ImageOperation::scaleImageToSize(filePath, -1.0, target), QString());
QCOMPARE(ImageOperation::scaleImageToSize(filePath, 0, target), QString());
QCOMPARE(ImageOperation::scaleImageToSize(filePath, targetSize*40, target), QString());
// Proper source file, proper scale factor, proper target file
QString result = ImageOperation::scaleImageToSize(filePath, targetSize, target);
QCOMPARE(result, target);
QImage tImg(result);
QFileInfo f2(result);
QVERIFY(f2.size() <= targetSize);
QVERIFY(tImg.width() < img.width());
QVERIFY(tImg.height() < img.height());
QFile::remove(result);
}
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void ut_imageoperation::testDropMetadata()
{
// NOTE: The test image doesn't contain all metadata fields such as
// title description, but it contains the most essential fields related
// to location and the author.
// First make sure that there is metadata
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QCOMPARE(QuillMetadata::canRead("images/testimage.jpg"), true);
QuillMetadata md("images/testimage.jpg");
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QCOMPARE(md.isValid(), true);
QVariant creator = md.entry(QuillMetadata::Tag_Creator);
QVariant city = md.entry(QuillMetadata::Tag_City);
QVariant country = md.entry(QuillMetadata::Tag_Country);
QVariant location= md.entry(QuillMetadata::Tag_Location);
QVariant lat = md.entry(QuillMetadata::Tag_GPSLatitude);
QVariant lon = md.entry(QuillMetadata::Tag_GPSLongitude);
// These shound't be null for the original image
QCOMPARE(creator.isNull(), false);
QCOMPARE(city.isNull(), false);
QCOMPARE(country.isNull(), false);
QCOMPARE(location.isNull(),false);
QCOMPARE(lat.isNull(), false);
QCOMPARE(lon.isNull(), false);
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QString path = ImageOperation::removeImageMetadata("images/testimage.jpg");
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QVERIFY(!path.isNull());
QCOMPARE(QFile::exists(path), true);
QCOMPARE(QuillMetadata::canRead(path), true);
QuillMetadata md2(path);
QCOMPARE(md2.isValid(), true);
creator = md2.entry(QuillMetadata::Tag_Creator);
city = md2.entry(QuillMetadata::Tag_City);
country = md2.entry(QuillMetadata::Tag_Country);
location= md2.entry(QuillMetadata::Tag_Location);
lat = md2.entry(QuillMetadata::Tag_GPSLatitude);
lon = md2.entry(QuillMetadata::Tag_GPSLongitude);
// After removing metadata these should be fine.
QCOMPARE(creator.isNull(), true);
QCOMPARE(city.isNull(), true);
QCOMPARE(country.isNull(), true);
QCOMPARE(location.isNull(),true);
QCOMPARE(lat.isNull(), true);
QCOMPARE(lon.isNull(), true);
// Remove the test image
QFile::remove(path);
}
/*
QTEST_MAIN(ut_imageoperation)
#include "ut_imageoperation.moc"
*/