Shagen Ogandzhanian
76 lines
1.6 KiB
Kotlin
Vendored
76 lines
1.6 KiB
Kotlin
Vendored
// TARGET_BACKEND: WASM
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// WITH_STDLIB
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// FILE: externals.js
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function roundTrip(x) { return x; }
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// FILE: externals.kt
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external fun roundTrip(x: EI?): EI?
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fun assertTrue(x: Boolean) {
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if (!x) error("assertTrue fail")
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}
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fun assertFalse(x: Boolean) {
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if (x) error("assertFalse fail")
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}
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external interface EI
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fun getNull(): EI? =
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js("null")
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fun getUndefined(): EI? =
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js("undefined")
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// https://youtrack.jetbrains.com/issue/KT-59294/WASM-localStorage-Cannot-read-properties-of-undefined-reading-length
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fun getStringUndefined(): String? =
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js("undefined")
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fun isJsNull(ref: EI?): Boolean =
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js("ref === null")
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fun isJsUndefined(ref: EI?): Boolean =
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js("ref === undefined")
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fun getJsNullAsNonNullable(): EI =
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js("null")
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fun getJsUndefinedAsNonNullable(): EI =
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js("undefined")
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inline fun checkNPE(body: () -> Unit) {
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var throwed = false
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try {
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body()
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} catch (e: NullPointerException) {
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throwed = true
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}
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assertTrue(throwed)
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}
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fun box(): String {
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val jsNull = getNull()
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val jsUndefined = getUndefined()
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assertTrue(jsNull == null)
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assertTrue((jsNull as Any?) == null)
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assertTrue((jsNull as Any?) === null)
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assertTrue(jsUndefined == null)
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assertTrue(getStringUndefined() == null)
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assertTrue(isJsNull(null))
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assertTrue(isJsNull(null as EI?))
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assertTrue(isJsNull(null as? EI?))
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assertTrue(isJsNull(roundTrip(null)))
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assertTrue(isJsNull(jsNull))
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assertFalse(isJsUndefined(null))
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checkNPE(::getJsNullAsNonNullable)
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checkNPE(::getJsUndefinedAsNonNullable)
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return "OK"
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} |