Unable to run qunit tests for SAP UI5 applications

[hpooj93]

Gruntfile consists :

module.exports = function (grunt) {
'use strict';
grunt.initConfig({
qunit: {
all: ['/webapp/test/unit/unitTests.qunit.html']
}
});
grunt.loadNpmTasks('grunt-contrib-qunit');
grunt.registerTask('default', ['qunit']);
};

Qunit runs but not able to read the test cases as it shows zero test cases