/**
* @param {string} val
* @return {Object}
*/
var expect = function(val) {
return {"toBe":
function (valu){
if (valu === val)
return true;
else
throw "Not Equal";
},
"notToBe":
function (valu){
if (valu !== val)
return true;
else
throw "Equal";
}
}
};
/**
* expect(5).toBe(5); // true
* expect(5).notToBe(5); // throws "Equal"
*/