Abduqodiri Qurbonzoda
76 lines
3.0 KiB
Kotlin
76 lines
3.0 KiB
Kotlin
/*
|
|
* Copyright 2010-2021 JetBrains s.r.o. and Kotlin Programming Language contributors.
|
|
* Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
|
|
*/
|
|
|
|
package test.collections
|
|
|
|
import kotlin.collections.builders.*
|
|
import kotlin.test.*
|
|
|
|
@Suppress("INVISIBLE_MEMBER")
|
|
class ListBuilderTest {
|
|
@Test
|
|
@Suppress("PLATFORM_CLASS_MAPPED_TO_KOTLIN", "UNCHECKED_CAST")
|
|
fun toArray() {
|
|
val numberOfElements = 5
|
|
val expected = ArrayList<Int>().apply { addAll(0 until numberOfElements) }
|
|
val builder = ListBuilder<Int>().apply { addAll(0 until numberOfElements) }
|
|
|
|
fun testToArray(getter: List<Int>.() -> Array<Any?>) {
|
|
assertTrue(expected.getter() contentEquals builder.getter())
|
|
assertTrue(expected.subList(2, 4).getter() contentEquals builder.subList(2, 4).getter())
|
|
}
|
|
|
|
testToArray { (this as java.util.Collection<Int>).toArray() }
|
|
}
|
|
|
|
@Test
|
|
@Suppress("PLATFORM_CLASS_MAPPED_TO_KOTLIN", "UNCHECKED_CAST")
|
|
fun toArrayDestination() {
|
|
val numberOfElements = 5
|
|
val expected = ArrayList<Int>().apply { addAll(0 until numberOfElements) }
|
|
val builder = ListBuilder<Int>().apply { addAll(0 until numberOfElements) }
|
|
|
|
fun testToArray(destSize: Int, getter: List<Int>.(Array<Int>) -> Array<Int>) {
|
|
repeat(2) { index ->
|
|
val expectedDest = Array(destSize) { -it - 1 }
|
|
val builderDest = Array(destSize) { -it - 1 }
|
|
|
|
val takeSubList = index == 1
|
|
val expectedResult = (if (!takeSubList) expected else expected.subList(2, 4)).getter(expectedDest)
|
|
val builderResult = (if (!takeSubList) builder else builder.subList(2, 4)).getter(builderDest)
|
|
|
|
if (expectedResult.size <= expectedDest.size) {
|
|
assertSame(expectedDest, expectedResult)
|
|
assertSame(builderDest, builderResult)
|
|
}
|
|
assertTrue(expectedResult contentEquals builderResult)
|
|
}
|
|
}
|
|
|
|
testToArray(0) { (this as java.util.Collection<Int>).toArray(it) }
|
|
testToArray(numberOfElements - 1) { (this as java.util.Collection<Int>).toArray(it) }
|
|
testToArray(numberOfElements) { (this as java.util.Collection<Int>).toArray(it) }
|
|
testToArray(numberOfElements + 1) { (this as java.util.Collection<Int>).toArray(it) }
|
|
testToArray(numberOfElements + 2) { (this as java.util.Collection<Int>).toArray(it) }
|
|
}
|
|
|
|
@Test
|
|
fun capacityOverflow() {
|
|
val builderSize = 15
|
|
val giantListSize = Int.MAX_VALUE - builderSize + 1
|
|
|
|
val giantList = object : AbstractList<String>() {
|
|
override val size: Int get() = giantListSize
|
|
override fun get(index: Int): String = "element"
|
|
}
|
|
|
|
buildList {
|
|
repeat(builderSize) { add("element") }
|
|
|
|
assertFails { addAll(giantList) }
|
|
assertEquals(builderSize, size)
|
|
}
|
|
}
|
|
} |