export function twoFer( arg : string ): string
{
if( arg !== "")
{
return "One for " + arg + ", one for me.";
}
return "One for you, one for me." ;
}
I am not able to understand what am I doing wrong. This is failing in the case when no argument is supplied.
describe('TwoFer', () => {
it('no name given', () => {
const expected = 'One for you, one for me.'
expect(twoFer()).toEqual(expected)
})
})
Output:
TEST FAILURE
Error: expect(received).toEqual(expected) // deep equality
Expected: "One for you, one for me."
Received: "One for undefined, one for me."
A string parameter not specified doesn't contain an empty string; it contains undefined. You would want something like this:
export function twoFer(arg?: string): string
{
if(typeof arg !== "undefined") {
return "One for " + arg + ", one for me.";
}
return "One for you, one for me.";
}
UPDATE:
Alternatively, you can make arg a parameter with a default value instead to reduce redundancy.
export function twoFer(arg = "you"): string
{
return "One for " + arg + ", one for me.";
}