Introduce Q_PROPERTY attribute REQUIRED

This is meant to correspond to required properties in QML.

Change-Id: I2645981e13f7423bc86b48370c165b3cfe2aaa62
Task-number: QTBUG-81561
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>

1 files changed, 24 insertions, 0 deletions

diff --git a/tests/auto/tools/moc/tst_moc.cpp b/tests/auto/tools/moc/tst_moc.cpp
index 6b202f79a6..0f801fe902 100644
--- a/tests/auto/tools/moc/tst_moc.cpp
+++ b/tests/auto/tools/moc/tst_moc.cpp
@@ -719,6 +719,7 @@ private slots:
     void cxx17Namespaces();
     void cxxAttributes();
     void mocJsonOutput();
+    void requiredProperties();
 
 signals:
     void sigWithUnsignedArg(unsigned foo);
@@ -4025,6 +4026,29 @@ void tst_Moc::mocJsonOutput()
     QVERIFY2(actualOutput == expectedOutput, showPotentialDiff(actualOutput, expectedOutput).constData());
 }
 
+class RequiredTest :public QObject
+{
+    Q_OBJECT
+
+    Q_PROPERTY(int required MEMBER m_required REQUIRED)
+    Q_PROPERTY(int notRequired MEMBER m_notRequired)
+
+private:
+    int m_required;
+    int m_notRequired;
+};
+
+void tst_Moc::requiredProperties()
+{
+    QMetaObject mo = RequiredTest::staticMetaObject;
+    QMetaProperty required = mo.property(mo.indexOfProperty("required"));
+    QVERIFY(required.isValid());
+    QVERIFY(required.isRequired());
+    QMetaProperty notRequired = mo.property(mo.indexOfProperty("notRequired"));
+    QVERIFY(notRequired.isValid());
+    QVERIFY(!notRequired.isRequired());
+}
+
 QTEST_MAIN(tst_Moc)
 
 // the generated code must compile with QT_NO_KEYWORDS