Add test for @ExportObjCClass

backend.native/tests/interop/objc/objcSmoke.def

@@ -1,3 +1,4 @@
 language = Objective-C
 headers = Foundation/NSArray.h Foundation/NSValue.h Foundation/NSString.h Foundation/NSStream.h
-headerFilter = **/smoke.h Foundation/NSArray.h Foundation/NSValue.h Foundation/NSString.h Foundation/NSStream.h
+headerFilter = **/smoke.h Foundation/NSArray.h Foundation/NSValue.h Foundation/NSString.h Foundation/NSStream.h \
+    objc/objc.h

backend.native/tests/interop/objc/smoke.kt

@@ -28,6 +28,7 @@ fun run() {
     testInitWithCustomSelector()
     testAllocNoRetain()
     testNSOutputStreamToMemoryConstructor()
+    testExportObjCClass()
 
     assertEquals(2, ForwardDeclaredEnum.TWO.value)
 
@@ -439,6 +440,19 @@ fun testNSOutputStreamToMemoryConstructor() {
     assertTrue(stream is NSOutputStream)
 }
 
+private const val TestExportObjCClass1Name = "TestExportObjCClass"
+@ExportObjCClass(TestExportObjCClass1Name) class TestExportObjCClass1 : NSObject()
+
+@ExportObjCClass class TestExportObjCClass2 : NSObject()
+
+fun testExportObjCClass() {
+    assertEquals(TestExportObjCClass1Name, TestExportObjCClass1().objCClassName)
+    assertEquals("TestExportObjCClass2", TestExportObjCClass2().objCClassName)
+}
+
+private val Any.objCClassName: String
+    get() = object_getClassName(this)!!.toKString()
+
 fun nsArrayOf(vararg elements: Any): NSArray = NSMutableArray().apply {
     elements.forEach {
         this.addObject(it as ObjCObject)