[K/N][tests] Migrate various runtime/ tests ^KT-61259

native/native.tests/testData/codegen/variables/var1.kt

@@ -0,0 +1,28 @@
+import kotlin.test.*
+
+private class Integer(val value: Int) {
+    operator fun inc() = Integer(value + 1)
+}
+
+private fun foo(x: Any, y: Any) {
+    x.use()
+    y.use()
+}
+
+fun box(): String {
+    var x = Integer(0)
+
+    for (i in 0..1) {
+        val c = Integer(0)
+        if (i == 0) x = c
+    }
+
+    // x refcount is 1.
+
+    foo(x, ++x)
+    return "OK"
+}
+
+private fun Any?.use() {
+    var x = this
+}

native/native.tests/testData/codegen/variables/var2.kt

@@ -0,0 +1,25 @@
+import kotlin.test.*
+
+fun box(): String {
+    var x = Any()
+
+    for (i in 0..1) {
+        val c = Any()
+        if (i == 0) x = c
+    }
+
+    // x refcount is 1.
+
+    val y = try {
+        x
+    } finally {
+        x = Any()
+    }
+
+    y.use()
+    return "OK"
+}
+
+private fun Any?.use() {
+    var x = this
+}

native/native.tests/testData/codegen/variables/var3.kt

@@ -0,0 +1,27 @@
+import kotlin.test.*
+
+fun box(): String {
+    foo().use()
+    return "OK"
+}
+
+private fun foo(): Any {
+    var x = Any()
+
+    for (i in 0..1) {
+        val c = Any()
+        if (i == 0) x = c
+    }
+
+    // x refcount is 1.
+
+    try {
+        return x
+    } finally {
+        x = Any()
+    }
+}
+
+private fun Any?.use() {
+    var x = this
+}

native/native.tests/testData/codegen/variables/var4.kt

@@ -0,0 +1,27 @@
+import kotlin.test.*
+
+fun box(): String {
+    var x = Error()
+
+    for (i in 0..1) {
+        val c = Error()
+        if (i == 0) x = c
+    }
+
+    // x refcount is 1.
+
+    try {
+        try {
+            throw x
+        } finally {
+            x = Error()
+        }
+    } catch (e: Error) {
+        e.use()
+    }
+    return "OK"
+}
+
+private fun Any?.use() {
+    var x = this
+}