feat: try is assignable from

Author: Samuel Vazquez

generator/graphql-kotlin-schema-generator/src/main/kotlin/com/expediagroup/graphql/generator/internal/extensions/kTypeExtensions.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2022 Expedia, Inc
+ * Copyright 2025 Expedia, Inc
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -28,7 +28,7 @@ internal fun KType.getKClass() = this.jvmErasure
 
 internal fun KType.getJavaClass(): Class<*> = this.getKClass().java
 
-internal fun KType.isSubclassOf(kClass: KClass<*>) = this.getKClass().isSubclassOf(kClass)
+internal fun KType.isSubclassOf(kClass: KClass<*>) = kClass.java.isAssignableFrom(this.getJavaClass())
 
 internal fun KType.isList() = this.isSubclassOf(List::class)
 

generator/graphql-kotlin-schema-generator/src/test/kotlin/com/expediagroup/graphql/generator/internal/extensions/KTypeExtensionsKtTest.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2022 Expedia, Inc
+ * Copyright 2025 Expedia, Inc
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -46,6 +46,8 @@ class KTypeExtensionsKtTest {
 
     class SimpleClass(val id: String) : SimpleInterface
 
+    enum class SimpleEnum { ONE, TWO, THREE }
+
     @Test
     fun getTypeOfFirstArgument() {
         assertEquals(String::class.starProjectedType, MyClass::listFun.findParameterByName("list")?.type?.getTypeOfFirstArgument())
@@ -92,6 +94,7 @@ class KTypeExtensionsKtTest {
     fun isSubclassOf() {
         assertTrue(MyClass::class.starProjectedType.isSubclassOf(MyClass::class))
         assertTrue(SimpleClass::class.starProjectedType.isSubclassOf(SimpleInterface::class))
+        assertTrue(SimpleEnum::class.starProjectedType.isSubclassOf(Enum::class))
         assertFalse(SimpleInterface::class.starProjectedType.isSubclassOf(SimpleClass::class))
         assertFalse(MyClass::class.starProjectedType.isSubclassOf(SimpleInterface::class))
     }