1 package net.pterodactylus.sone.utils
3 import com.google.common.base.Optional
4 import org.hamcrest.MatcherAssert.assertThat
5 import org.hamcrest.Matchers.equalTo
6 import org.hamcrest.Matchers.nullValue
10 * Test for [Optional] utils.
15 fun `present optional can be transformed with let`() {
16 val optional = Optional.of(1)
17 assertThat(optional.let { it + 1 }, equalTo(2))
21 fun `empty optional is transform to null with let`() {
22 val optional = Optional.absent<Int>()
23 assertThat(optional.let { it + 1 }, nullValue())
27 fun `1 as optional is correct optional`() {
28 val optional = 1.asOptional()
29 assertThat(optional.get(), equalTo(1))
33 fun `null as optional is asent optional`() {
34 val optional = null.asOptional()
35 assertThat(optional.isPresent, equalTo(false))