QML test fails in Qt 5.9.1

Question

While compiling in Qt 5.9.1 version it is not working.. Any one help me to compile this TestCase in qml..

import QtQuick 2.0
import QtTest 1.1

    TestCase{
            function test_math() {
                compare(2 + 2, 4, "2 + 2 = 4")
            }

            function test_fail() {
                compare(2 + 2, 5, "2 + 2 = 5")
            }

        }

Getting error like this:

Type TestCase unavailable and module Qt.test.qtestroot is not installed