pragma Strict
import QtQml
import TestTypes

QtObject {
    id: self

    property QtObject nullObject
    property QtObject nonNullObject: QtObject {}
    property QtObject sameNonNullObject: nonNullObject
    property QtObject derivedObject: Person {name: "patron"}

    property bool derivedIsNotNull: derivedObject !== null
    property bool nullObjectIsNull: nullObject === null
    property bool nonNullObjectIsNotNull: null !== nonNullObject
    property bool compareSameObjects: sameNonNullObject === nonNullObject
    property bool compareDifferentObjects: derivedObject !== nonNullObject
    property bool compareObjectWithNullObject: nullObject !== nonNullObject

    // Above tests should hold true for the weak comparisons
    property bool nonStrict_derivedIsNotNull: derivedObject != null
    property bool nonStrict_nullObjectIsNull: nullObject == null
    property bool nonStrict_nonNullObjectIsNotNull: null != nonNullObject
    property bool nonStrict_compareSameObjects: sameNonNullObject == nonNullObject
    property bool nonStrict_compareDifferentObjects: derivedObject != nonNullObject
    property bool nonStrict_compareObjectWithNullObject: nullObject != nonNullObject
}