QCborMap: add missing comparator to QCborValueConstRef

And ensure all combination of CBOR types are tested.

Amends e5ebb9022ab9e00ab01d0bce527755da77083217

Change-Id: I5f663c2f9f4149af84fefffd17c02d352cd41f3f
Reviewed-by: Tatiana Borisova <tatiana.borisova@qt.io>

src/corelib/serialization/qcbormap.cpp

@@ -19,7 +19,7 @@ using namespace QtCbor;
     \brief The QCborMap class is used to hold an associative container representable in CBOR.
 
     \compares strong
-    \compareswith strong QCborValue
+    \compareswith strong QCborValue QCborValueConstRef
     \endcompareswith
 
     This class can be used to hold an associative container in CBOR, a map

src/corelib/serialization/qcbormap.h

@@ -326,6 +326,19 @@ private:
     }
     Q_DECLARE_STRONGLY_ORDERED(QCborMap, QCborValue)
 
+    friend bool comparesEqual(const QCborMap &lhs, const QCborValueConstRef &rhs) noexcept
+    {
+        return lhs.compare(rhs.toMap()) == 0;
+    }
+
+    friend Qt::strong_ordering compareThreeWay(const QCborMap &lhs,
+                                               const QCborValueConstRef &rhs) noexcept
+    {
+        int c = lhs.compare(rhs.toMap());
+        return Qt::compareThreeWay(c, 0);
+    }
+    Q_DECLARE_STRONGLY_ORDERED(QCborMap, QCborValueConstRef)
+
     explicit QCborMap(QCborContainerPrivate &dd) noexcept;
     QExplicitlySharedDataPointer<QCborContainerPrivate> d;
 };

tests/auto/corelib/serialization/qcborvalue/tst_qcborvalue.cpp

@@ -452,17 +452,25 @@ void tst_QCborValue::extendedTypes_data()
 
 void tst_QCborValue::compareCompiles()
 {
+    // homogeneous types
     QTestPrivate::testAllComparisonOperatorsCompile<QCborValue>();
     QTestPrivate::testAllComparisonOperatorsCompile<QCborValueRef>();
     QTestPrivate::testAllComparisonOperatorsCompile<QCborValueConstRef>();
     QTestPrivate::testAllComparisonOperatorsCompile<QCborArray>();
     QTestPrivate::testAllComparisonOperatorsCompile<QCborMap>();
+
+    // QCborValue, Ref and ConstRef
     QTestPrivate::testAllComparisonOperatorsCompile<QCborValueRef, QCborValueConstRef>();
     QTestPrivate::testAllComparisonOperatorsCompile<QCborValueConstRef, QCborValue>();
     QTestPrivate::testAllComparisonOperatorsCompile<QCborValueRef, QCborValue>();
-    QTestPrivate::testAllComparisonOperatorsCompile<QCborValueConstRef, QCborArray>();
+
-    QTestPrivate::testAllComparisonOperatorsCompile<QCborValueRef, QCborArray>();
+    // QCbor{Array,Map} <=> QCborValue{,Ref,ConstRef}
+    QTestPrivate::testAllComparisonOperatorsCompile<QCborArray, QCborValue>();
+    QTestPrivate::testAllComparisonOperatorsCompile<QCborArray, QCborValueRef>();
+    QTestPrivate::testAllComparisonOperatorsCompile<QCborArray, QCborValueConstRef>();
     QTestPrivate::testAllComparisonOperatorsCompile<QCborMap, QCborValue>();
+    QTestPrivate::testAllComparisonOperatorsCompile<QCborMap, QCborValueRef>();
+    QTestPrivate::testAllComparisonOperatorsCompile<QCborMap, QCborValueConstRef>();
 }
 
 void tst_QCborValue::extendedTypes()