James Strachan
43 lines
878 B
Kotlin
43 lines
878 B
Kotlin
package test.standard
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import kotlin.*
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import kotlin.test.*
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import org.junit.Test as test
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class GetOrElseTest {
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val v1: String? = "hello"
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val v2: String? = null
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var counter = 0
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test fun defaultValue() {
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assertEquals("hello", v1?: "bar")
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expect("hello") {
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v1?: "bar"
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}
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}
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test fun defaultValueOnNull() {
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assertEquals("bar", v2?: "bar")
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expect("bar") {
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v2?: "bar"
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}
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}
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fun calculateBar(): String {
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counter++
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return "bar"
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}
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test fun lazyDefaultValue() {
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counter = 0
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assertEquals("hello", v1?: calculateBar())
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assertEquals(counter, 0, "counter should not be incremented yet")
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assertEquals("bar", v2?: calculateBar())
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assertEquals(counter, 1, "counter should be incremented in the default function")
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}
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}
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