[K/N] Migrate some cinterop tests to new test infra

native/native.tests/testData/CInterop/executable/funptr/funptr.kt

@@ -0,0 +1,48 @@
+// OUT_DATA_FILE: funptr.out
+/*
+ * Copyright 2010-2023 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the LICENSE file.
+ */
+@file:OptIn(kotlinx.cinterop.ExperimentalForeignApi::class)
+
+import kotlinx.cinterop.*
+import funptr.*
+import kotlin.test.*
+
+typealias NotSoLongSignatureFunction = (
+    Int, Int, Int, Int, Int, Int, Int, Int, Int, Int, Int,
+    Int, Int, Int, Int, Int, Int, Int, Int, Int, Int, Int
+) -> Int
+
+fun main(args: Array<String>) {
+    val atoiPtr = getAtoiPtr()!!
+
+    val getPrintIntPtrPtr = getGetPrintIntPtrPtr()!!
+    val printIntPtr = getPrintIntPtrPtr()!!.reinterpret<CFunction<(Int) -> Unit>>()
+
+    val fortyTwo = memScoped {
+        atoiPtr("42".cstr.getPointer(memScope))
+    }
+
+    printIntPtr(fortyTwo)
+
+    printIntPtr(
+            getDoubleToIntPtr()!!(
+                    getAddPtr()!!(5.1, 12.2)
+            )
+    )
+
+    val isIntPositivePtr = getIsIntPositivePtr()!!
+
+    printIntPtr(isIntPositivePtr(42).ifThenOneElseZero())
+    printIntPtr(isIntPositivePtr(-42).ifThenOneElseZero())
+
+    assertEquals(getMaxUIntGetter()!!(), UInt.MAX_VALUE)
+
+    val longSignaturePtr: COpaquePointer? = getLongSignatureFunctionPtr()
+    val notSoLongSignaturePtr: CPointer<CFunction<NotSoLongSignatureFunction>>? = getNotSoLongSignatureFunctionPtr()
+    printIntPtr(notSoLongSignaturePtr!!.invoke(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0))
+    printIntPtr(notSoLongSignatureFunction(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0))
+}
+
+fun Boolean.ifThenOneElseZero() = if (this) 1 else 0