Ilya Gorbunov
71 lines
2.1 KiB
Kotlin
71 lines
2.1 KiB
Kotlin
/*
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* Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
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* Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
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*/
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package test.properties.delegation.map
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import kotlin.test.*
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class ValByMapExtensionsTest {
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val map: Map<String, String> = hashMapOf("a" to "all", "b" to "bar", "c" to "code")
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val genericMap = mapOf<String, Any?>("i" to 1, "x" to 1.0)
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val mmapOut: MutableMap<String, out String> = mutableMapOf("g" to "out", "g1" to "in")
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val genericMmapOut: MutableMap<String, out Any?> = mmapOut
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val a by map
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val b: String by map
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val c: Any by map
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val d: String? by map
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val e: String by map.withDefault { "default" }
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val f: String? by map.withDefault { null }
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val g: String by mmapOut
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val g1: String by genericMmapOut
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// val n: Int by map // prohibited by type system
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val i: Int by genericMap
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val x: Double by genericMap
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@Test fun doTest() {
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assertEquals("all", a)
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assertEquals("bar", b)
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assertEquals("code", c)
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assertEquals("default", e)
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assertEquals(null, f)
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assertEquals("out", g)
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assertEquals("in", g1)
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assertEquals(1, i)
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assertEquals(1.0, x)
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assertFailsWith<NoSuchElementException> { d }
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}
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}
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class VarByMapExtensionsTest {
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val map = hashMapOf<String, Any?>("a" to "all", "b" to null, "c" to 1, "xProperty" to 1.0)
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val map2: MutableMap<String, CharSequence> = hashMapOf("a2" to "all")
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var a: String by map
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var b: Any? by map
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var c: Int by map
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var d: String? by map
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var a2: String by map2.withDefault { "empty" }
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//var x: Int by map2 // prohibited by type system
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@Test fun doTest() {
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assertEquals("all", a)
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assertEquals(null, b)
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assertEquals(1, c)
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c = 2
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assertEquals(2, c)
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assertEquals(2, map["c"])
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assertEquals("all", a2)
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map2.remove("a2")
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assertEquals("empty", a2)
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assertFailsWith<NoSuchElementException> { d }
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map["d"] = null
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assertEquals(null, d)
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}
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} |