Add test for overriding methods of Any from Swift

kotlin-native/backend.native/tests/objcexport/expectedLazy.h

@@ -663,6 +663,16 @@ __attribute__((swift_name("ArraysInitBlock")))
 - (NSString *)log __attribute__((swift_name("log()")));
 @end;
 
+__attribute__((objc_subclassing_restricted))
+__attribute__((swift_name("OverrideMethodsOfAnyKt")))
+@interface KtOverrideMethodsOfAnyKt : KtBase
+
+/**
+ @note This method converts all Kotlin exceptions to errors.
+*/
++ (BOOL)testObj:(id)obj other:(id)other swift:(BOOL)swift error:(NSError * _Nullable * _Nullable)error __attribute__((swift_name("test(obj:other:swift:)")));
+@end;
+
 __attribute__((objc_subclassing_restricted))
 __attribute__((swift_name("ThrowsEmptyKt")))
 @interface KtThrowsEmptyKt : KtBase

kotlin-native/backend.native/tests/objcexport/overrideMethodsOfAny.kt

@@ -0,0 +1,18 @@
+package overrideMethodsOfAny
+
+import kotlin.test.*
+
+@Throws(Throwable::class)
+fun test(obj: Any, other: Any, swift: Boolean) {
+    if (!swift) {
+        // Doesn't work for Swift, see https://youtrack.jetbrains.com/issue/KT-44613.
+        assertEquals(42, obj.hashCode())
+        assertTrue(obj.equals(other))
+    }
+
+    assertTrue(obj.equals(obj))
+    assertFalse(obj.equals(null))
+    assertFalse(obj.equals(Any()))
+
+    assertEquals("toString", obj.toString())
+}

kotlin-native/backend.native/tests/objcexport/overrideMethodsOfAny.swift

@@ -0,0 +1,43 @@
+/*
+ * Copyright 2010-2021 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.
+ */
+
+import Kt
+
+private class SwiftOverridingMethodsOfAny : Hashable, Equatable, CustomStringConvertible {
+    var hashValue: Int { return 42 }
+
+    static func == (lhs: SwiftOverridingMethodsOfAny, rhs: SwiftOverridingMethodsOfAny) -> Bool {
+        return true
+    }
+
+    var description: String { return "toString" }
+}
+
+private func testSwift() throws {
+    try OverrideMethodsOfAnyKt.test(obj: SwiftOverridingMethodsOfAny(), other: SwiftOverridingMethodsOfAny(), swift: true)
+}
+
+private class ObjCOverridingMethodsOfAny : NSObject {
+    override var hash: Int { return 42 }
+
+    override func isEqual(_ other: Any?) -> Bool {
+        return other is ObjCOverridingMethodsOfAny
+    }
+
+    override var description: String { return "toString" }
+}
+
+private func testObjC() throws {
+    try OverrideMethodsOfAnyKt.test(obj: ObjCOverridingMethodsOfAny(), other: ObjCOverridingMethodsOfAny(), swift: false)
+}
+
+class OverrideMethodsOfAnyTests : SimpleTestProvider {
+    override init() {
+        super.init()
+
+        test("TestSwift", testSwift)
+        test("TestObjC", testObjC)
+    }
+}