Ilya Gorbunov
85af1f5d38
Make copyOfRange implementation non-inline in order not to expose copyOfRangeToIndexCheck implementation detail. It will be possible to make the function non-inline itself later without that JvmName trick, when apiVersion 1.2 support is discontinued. #KT-19489
96 lines
2.5 KiB
Kotlin
96 lines
2.5 KiB
Kotlin
/*
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* Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
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* that can be found in the license/LICENSE.txt file.
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*/
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package test.collections
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import kotlin.test.*
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class ListSpecificTest {
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val data = listOf("foo", "bar")
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val empty = listOf<String>()
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@Test
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fun _toString() {
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assertEquals("[foo, bar]", data.toString())
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}
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@Test
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fun tail() {
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val data = listOf("foo", "bar", "whatnot")
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val actual = data.drop(1)
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assertEquals(listOf("bar", "whatnot"), actual)
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}
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@Test
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fun slice() {
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val list = listOf('A', 'B', 'C', 'D')
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assertEquals(emptyList(), list.slice(IntRange.EMPTY))
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// ABCD
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// 0123
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assertEquals(listOf('B', 'C', 'D'), list.slice(1..3))
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assertEquals(listOf('D', 'C', 'B'), list.slice(3 downTo 1))
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val iter = listOf(2, 0, 3)
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assertEquals(listOf('C', 'A', 'D'), list.slice(iter))
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for (range in listOf(-1 until 0, 0 until 2, 2..2)) {
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val bounds = "range: $range"
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val exClass = IndexOutOfBoundsException::class
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assertFailsWith(exClass, bounds) { listOf("x").slice(range) }
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assertFailsWith(exClass, bounds) { listOf("x").slice(range.asIterable()) }
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}
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}
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@Test
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fun getOr() {
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expect("foo") { data.get(0) }
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expect("bar") { data.get(1) }
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assertFails { data.get(2) }
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assertFails { data.get(-1) }
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assertFails { empty.get(0) }
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expect("foo") { data.getOrElse(0, { "" }) }
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expect("zoo") { data.getOrElse(-1, { "zoo" }) }
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expect("zoo") { data.getOrElse(2, { "zoo" }) }
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expect("zoo") { empty.getOrElse(0) { "zoo" } }
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expect(null) { empty.getOrNull(0) }
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}
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@Test
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fun lastIndex() {
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assertEquals(-1, empty.lastIndex)
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assertEquals(1, data.lastIndex)
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}
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@Test
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fun indexOfLast() {
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expect(-1) { data.indexOfLast { it.contains("p") } }
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expect(1) { data.indexOfLast { it.length == 3 } }
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expect(-1) { empty.indexOfLast { it.startsWith('f') } }
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}
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@Test
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fun mutableList() {
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val items = listOf("beverage", "location", "name")
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var list = listOf<String>()
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for (item in items) {
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list += item
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}
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assertEquals(3, list.size)
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assertEquals("beverage,location,name", list.joinToString(","))
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}
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@Test
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fun testNullToString() {
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assertEquals("[null]", listOf<String?>(null).toString())
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}
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}
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