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/*
* Copyright 2018 Allan Wang
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package ca.allanwang.kau.kotlin
import org.junit.Test
import kotlin.test.assertEquals
/**
* Created by Allan Wang on 2017-08-05.
*
* Test code for [kauRemoveIf]
*/
class StreamsTest {
@Test
fun basic() {
val items = mutableListOf(0, 1, 2, 3, 4, 5, 6, 7, 8, 9)
items.kauRemoveIf { it % 2 == 0 }
assertEquals(listOf(1, 3, 5, 7, 9), items)
}
@Test
fun objectReference() {
data class Potato(val id: Int)
val thePotato = Potato(9)
val items = mutableListOf<Potato>()
val result = mutableListOf<Potato>()
for (i in 0..11) {
val potato = Potato(i)
items.add(potato)
result.add(potato)
}
items.add(3, thePotato)
assertEquals(result.size + 1, items.size, "Invalid list addition")
assertEquals(2, items.filter { it.id == 9 }.size, "Invalid number of potatoes with id 9")
items.kauRemoveIf { it === thePotato } // removal by reference
assertEquals(result.size, items.size, "Invalid list size after removal")
assertEquals(result, items)
items.kauRemoveIf { it == thePotato } // removal by equality
assertEquals(result.size - 1, items.size, "Invalid list removal based on equality")
}
}
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