[K/N] Migrate some runtime/basic tests to new testing infra ^KT-61259

kotlin-native/runtime/test/utils/AnyTest.kt

@@ -0,0 +1,36 @@
+/*
+ * Copyright 2010-2023 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package test.utils
+
+import kotlin.test.*
+
+private class TopLevel
+
+private fun Any.toStringWithoutHashCode(): String {
+    val string = toString()
+    assertEquals(1, string.count { it == '@' }, "Invalid toString() value: $string")
+    return string.substringBefore('@')
+}
+
+class AnyTest {
+    @Test
+    fun testToString() {
+        assertEquals("test.utils.TopLevel", TopLevel().toStringWithoutHashCode())
+
+        class Local1
+        assertEquals("test.utils.AnyTest\$testToString\$Local1", Local1().toStringWithoutHashCode())
+
+        assertEquals("test.utils.AnyTest\$testToString\$1", object {}.toStringWithoutHashCode())
+
+        fun localFun() {
+            class Local2
+            assertEquals("test.utils.AnyTest\$testToString\$localFun\$Local2", Local2().toStringWithoutHashCode())
+
+            assertEquals("test.utils.AnyTest\$testToString\$localFun\$1", object {}.toStringWithoutHashCode())
+        }
+        localFun()
+    }
+}