Dmitry Petrov
02d8c7527e
Assume that changing a return type from T to T? is not a binary-compatible change.
34 lines
639 B
Kotlin
Vendored
34 lines
639 B
Kotlin
Vendored
// WITH_RUNTIME
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// MODULE: lib
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// FILE: a.kt
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class A(val x : Int, val y : A?)
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// MODULE: main(lib)
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// FILE: safeCallWithElvisMultipleFiles.kt
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import kotlin.test.assertEquals
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fun check(a : A?) : Int {
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return a?.y?.x ?: (a?.x ?: 3)
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}
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fun checkLeftAssoc(a : A?) : Int {
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return (a?.y?.x ?: a?.x) ?: 3
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}
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fun box() : String {
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val a1 = A(2, A(1, null))
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val a2 = A(2, null)
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val a3 = null
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assertEquals(1, check(a1))
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assertEquals(2, check(a2))
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assertEquals(3, check(a3))
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assertEquals(1, checkLeftAssoc(a1))
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assertEquals(2, checkLeftAssoc(a2))
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assertEquals(3, checkLeftAssoc(a3))
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return "OK"
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}
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