Document QCOMPARE "toString()" with QList<MyCustomItem>

#include <QTest>

class MyClass {
   QString m_name;
public:
   MyClass(const QString& name) : m_name(name) {}
   bool operator==(const MyClass& other) const { return m_name == other.m_name; }
   QString name() const { return m_name; }
};
using MyClassList = QList<MyClass>;

// called for single element comparison
char* toString(const MyClass& mc) { return QTest::toString(mc.name()); }

namespace QTest {
// called for element comparison in QList. Without this prints "<null>"
template<> char* toString(const MyClass& mc) { return QTest::toString(mc.name()); }
}

class SimpleTest : public QObject
{
   Q_OBJECT
private slots:
   void tst_case_single_element() {
       MyClass A{"A"},B{"B"};
       QCOMPARE(A,B);
   }
   void tst_case_list_element() {
       MyClassList list_1{{"A"},{"B"}};
       MyClassList list_2{{"A"},{"C"}};
       QCOMPARE(list_1, list_2);
   }
};

QTEST_MAIN(SimpleTest)
#include "main.moc"