I am spying a JS method. I want to return different things based on actual argument to the method. I tried callFake and tried to access arguments using arguments[0] but it says arguments[0] is undefined. Here is the code -
spyOn(testService, 'testParam').and.callFake(function() {
var rValue = {};
if(arguments[0].indexOf("foo") !== -1){
return rValue;
}
else{
return {1};
}
})
This is suggested here - Any way to modify Jasmine spies based on arguments?
But it does not work for me.
Use of arguments should work just fine. Also on a side note could you paste your entire object under test- though that's not the source of the issue.
Here is how I used it. See it in action here
var testObj = {
'sample': "This is a sample string",
'methodUnderTest': function(param) {
console.log(param);
return param;
}
};
testObj.methodUnderTest("You'll notice this string on console");
describe('dummy Test Suite', function() {
it('test param passed in', function() {
spyOn(testObj, 'methodUnderTest').and.callFake(function() {
var param = arguments[0];
if (param === 5) {
return "five";
}
return param;
});
var val = testObj.methodUnderTest(5);
expect(val).toEqual('five');
var message = "This string is not printed on console";
val = testObj.methodUnderTest(message);
expect(val).toEqual(message);
});
});