QTest and QFETCH

[ManuMies]

Is there any simple way to read the test data from file instead of manually defining the test data with _data-functions? Or do I just have to make a file reader...


And when I create test class, which uses private slots as test cases, can I still use private functions without messing up the testcases?

[wysota]

Is there any simple way to read the test data from file instead of manually defining the test data with _data-functions? Or do I just have to make a file reader...

Read data from file/db from within the _data() method and fill the test vector with it.

And when I create test class, which uses private slots as test cases, can I still use private functions without messing up the testcases?

Yes, just don't declare them as slots.

[ManuMies]

Thanks, that's what I thought.

And other thing about testing, is there any way to monitor the heapsize with testcases, so I can check if my code is leaking memory? Like UHEAP macros in symbian?

__UHEAP_MARK;
QString* string = new QString();
string->copy("test");
delete string;
__UHEAP_MARKEND;

__UHEAP_MARK;
QString* string = new QString();
string->copy("test");
delete string;
__UHEAP_MARKEND;

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[wysota]

Qt itself doesn't have such capabilities. There are dedicated tools for that such as Valgrind.

[ManuMies]

Are you saying that there is no way to see, how much memory qt application has currently allocated? Then is it possible by using native C?

[wysota]

Are you saying that there is no way to see, how much memory qt application has currently allocated?

Not by using means built into Qt.

Then is it possible by using native C?

For Linux there is a way. There are system calls returning such information and you can also look into /proc/ to see details about your process. For other platforms - that I do not know.

[auba]

To get back to the original question... I'm trying to read my test cases from an XML file. There I wanted to define the columns and the rows. First case is checking if the program has the right name

TDataLoader::fillData(meth) {  
QDomElement m = m_Root.firstChildElement(meth);
QDomElement cols = m.firstChildElement(tagColumns);
for(QDomElement col=cols.firstChildElement(tagColumn); !col.isNull(); col=col.nextSiblingElement(tagColumn)) {
  QString name = col.attribute(entryName);
  QString type = col.attribute(entryType).toLower();
  // Simplifying: here is type checking
  QTest::addColumn<QString>(name.toLatin1());
}
 ...
 QDomElement rows = m.firstChildElement(tagRows);
 for(QDomElement row=rows.firstChildElement(tagRow); !row.isNull(); row=row.nextSiblingElement(tagRow)) {
   QString name = row.attribute(entryName);
   QTestData& values = QTest::newRow(name.toLatin1());
   QDomNamedNodeMap attrs = row.attributes();
    for(int i=0; i<attrs.count(); i++) {
        QDomNode node = attrs.item(i);
        // Simplifying: needs type casting
        values << row.attribute(node.nodeName());
   }
}
}

TDataLoader::fillData(meth) {  
QDomElement m = m_Root.firstChildElement(meth);
QDomElement cols = m.firstChildElement(tagColumns);
for(QDomElement col=cols.firstChildElement(tagColumn); !col.isNull(); col=col.nextSiblingElement(tagColumn)) {
  QString name = col.attribute(entryName);
  QString type = col.attribute(entryType).toLower();
  // Simplifying: here is type checking
  QTest::addColumn<QString>(name.toLatin1());
}
 ...
 QDomElement rows = m.firstChildElement(tagRows);
 for(QDomElement row=rows.firstChildElement(tagRow); !row.isNull(); row=row.nextSiblingElement(tagRow)) {
   QString name = row.attribute(entryName);
   QTestData& values = QTest::newRow(name.toLatin1());
   QDomNamedNodeMap attrs = row.attributes();
    for(int i=0; i<attrs.count(); i++) {
        QDomNode node = attrs.item(i);
        // Simplifying: needs type casting
        values << row.attribute(node.nodeName());
   }
}
}

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In the test method, I call fillData with the method's name (m_Data is the instance of the data loader):

void TTestRunner::testProgram_data()
{
    m_Data.fillData("testProgram");
}
void TTestRunner::testProgram()
{
    QFETCH(QString, title);
    QCOMPARE(QCoreApplication::applicationName(), title);
}

void TTestRunner::testProgram_data()
{
    m_Data.fillData("testProgram");
}
void TTestRunner::testProgram()
{
    QFETCH(QString, title);
    QCOMPARE(QCoreApplication::applicationName(), title);
}

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but what I get is an error:

QFETCH: Requested testdata 'title' not available, check your _data function.

QFETCH: Requested testdata 'title' not available, check your _data function.

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Is it wrong to add additional data to the QTestData reference or am I missing something? The XML file is read correctly:

<?xml version="1.0" encoding="utf-8" ?>
<Data>
    <testProgram>
        <columns>
            <column name="title" type="QString" />
        </columns>
        <rows>
            <row name="title" value="targs" />
        </rows>
    </testProgram>
</Data>

<?xml version="1.0" encoding="utf-8" ?>
<Data>
    <testProgram>
        <columns>
            <column name="title" type="QString" />
        </columns>
        <rows>
            <row name="title" value="targs" />
        </rows>
    </testProgram>
</Data>

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[wysota]

QTest::addColumn<QString>(name.toLatin1());

QTest::addColumn<QString>(name.toLatin1());

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This should be:

QTest::addColumn<QString>("title");

QTest::addColumn<QString>("title");

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