it('should work correctly', () => {
[ { option: Just(2).orElse(() => Just(3)).get(),
value: 2,
},
{ option: Just(false).orElse(() => Nothing).get(),
value: false,
},
].forEach(({option, value}) => expect(option).to.equal(value));
});
it('should work correctly', () => {
[ { option: Just(2).getOrElse(() => 3),
value: 2,
},
{ option: Just(false).getOrElse(() => true),
value: false,
},
].forEach(({option, value}) => expect(option).to.equal(value));
});
it('should work correctly', (done) => {
const value = 1;
Just(value).toPromise().then((resolvedValue) => {
expect(resolvedValue).to.equal(value);
done();
});
});
it('should work correctly', () => {
expect(Just(2)
.lift((n) => n * 2)
.lift((n) => n * 2)
.fold({
just: (n) => n === 8,
nothing: () => false,
})).to.be.true;
});
[ { option: Just(2).orElse(() => Just(3)).get(),
.bind((n) => Just(n * 2))
it('should work correctly', () => {
expect(Just(1).fold({
just: () => true,
nothing: () => false,
})).to.be.true;
});
it('should be instance of Maybe', () => {
expect(Just(1)).to.be.an.instanceof(Maybe);
});
const value = Nothing.orElse(() => Just(3)).get();
.bind(() => Just(2))