[FIR] Add test cases to prove resolution of backlog tickets

^KT-41728 Fixed ^KT-46586 Fixed ^KT-49696 Fixed ^KT-51160 Fixed ^KT-53308 Fixed
2023-11-07 10:12:13 -06:00
parent 2b82726f1d
commit 6df97dd199
15 changed files with 484 additions and 0 deletions
@@ -0,0 +1,82 @@
+// !OPT_IN: kotlin.contracts.ExperimentalContracts
+// WITH_STDLIB
+// ISSUE: KT-51160
+
+import kotlin.contracts.*
+
+sealed interface AsyncStatus<out T : Any> {
+    val value: T?
+
+    data class Pending<out T : Any>(
+        override val value: T? = null,
+    ) : AsyncStatus<T>
+
+    sealed interface Terminal<out T : Any> : AsyncStatus<T>
+
+    data class Error<out T : Any>(
+        val error: Throwable,
+        override val value: T? = null,
+    ) : Terminal<T>
+
+    data class Success<out T : Any>(
+        override val value: T,
+    ) : Terminal<T>
+}
+
+fun <T : Any> AsyncStatus<T>.isPending(): Boolean {
+    contract {
+        returns(true) implies (this@isPending is AsyncStatus.Pending)
+        returns(false) implies (this@isPending is AsyncStatus.Terminal)
+    }
+    return (this is AsyncStatus.Pending)
+}
+
+fun <T : Any> AsyncStatus<T>.isSuccess(): Boolean {
+    contract { returns(true) implies (this@isSuccess is AsyncStatus.Success) }
+    return (this is AsyncStatus.Success)
+}
+
+fun <T : Any> AsyncStatus.Terminal<T>.isSuccess(): Boolean {
+    contract {
+        returns(true) implies (this@isSuccess is AsyncStatus.Success)
+        returns(false) implies (this@isSuccess is AsyncStatus.Error)
+    }
+    return (this is AsyncStatus.Success)
+}
+
+fun <T : Any> AsyncStatus<T>.isError(): Boolean {
+    contract { returns(true) implies (this@isError is AsyncStatus.Error) }
+    return (this is AsyncStatus.Error)
+}
+
+fun <T : Any> AsyncStatus.Terminal<T>.isError(): Boolean {
+    contract {
+        returns(true) implies (this@isError is AsyncStatus.Error)
+        returns(false) implies (this@isError is AsyncStatus.Success)
+    }
+    return (this is AsyncStatus.Error)
+}
+
+fun <T : Any> AsyncStatus<T>.isTerminal(): Boolean {
+    contract {
+        returns(true) implies (this@isTerminal is AsyncStatus.Terminal)
+        returns(false) implies (this@isTerminal is AsyncStatus.Pending)
+    }
+    return (this is AsyncStatus.Terminal)
+}
+
+fun main() {
+    val foo = AsyncStatus.Pending<String>()
+    if (!foo.isPending()) {
+        if (<!DEBUG_INFO_SMARTCAST!>foo<!>.isSuccess()) {
+            nonNullPrint(<!TYPE_MISMATCH!>foo.value<!>)
+        }
+        if (<!DEBUG_INFO_SMARTCAST!>foo<!>.isError()) {
+            foo.<!UNRESOLVED_REFERENCE!>error<!>.<!DEBUG_INFO_MISSING_UNRESOLVED!>printStackTrace<!>()
+        }
+    }
+}
+
+fun nonNullPrint(printMe: String) {
+    println(printMe)
+}