Use getParentTreeCursor() in Assertions (#621)

* Use `getParentTreeCursor()` in `Assertions`

* Apply suggestions from code review

Author: timtebeek

src/main/java/org/openrewrite/kotlin/Assertions.java

@@ -478,18 +478,15 @@ private boolean inImport() {
         }
 
         private boolean isClassName() {
-            Cursor parent = getCursor().getParent();
-            return parent != null && parent.getValue() instanceof J.ClassDeclaration;
+            return getCursor().getParentTreeCursor().getValue() instanceof J.ClassDeclaration;
         }
 
         private boolean isMethodName() {
-            Cursor parent = getCursor().getParent();
-            return parent != null && parent.getValue() instanceof J.MethodDeclaration;
+            return getCursor().getParentTreeCursor().getValue() instanceof J.MethodDeclaration;
         }
 
         private boolean isMethodInvocationName() {
-            Cursor parent = getCursor().getParent();
-            return parent != null && parent.getValue() instanceof J.MethodInvocation;
+            return getCursor().getParentTreeCursor().getValue() instanceof J.MethodInvocation;
         }
 
         private boolean isFieldAccess(J.Identifier ident) {
@@ -515,8 +512,7 @@ private boolean isNewClass(J.Identifier ident) {
         }
 
         private boolean isTypeParameter() {
-            return getCursor().getParent() != null &&
-                   getCursor().getParent().getValue() instanceof J.TypeParameter;
+            return getCursor().getParentTreeCursor().getValue() instanceof J.TypeParameter;
         }
 
         private boolean isMemberReference(J.Identifier ident) {
@@ -550,8 +546,8 @@ private boolean isLabel() {
         }
 
         private boolean isAnnotationField(J.Identifier ident) {
-            Cursor parent = getCursor().getParent();
-            return parent != null && parent.getValue() instanceof J.Assignment &&
+            Cursor parent = getCursor().getParentTreeCursor();
+            return parent.getValue() instanceof J.Assignment &&
                    (ident == ((J.Assignment) parent.getValue()).getVariable() && getCursor().firstEnclosing(J.Annotation.class) != null);
         }
 

src/test/java/org/openrewrite/kotlin/KotlinTypeMappingTest.java

@@ -395,7 +395,7 @@ void coneFlexibleType() {
               kotlin(
                 """
                   import java.lang.invoke.TypeDescriptor.OfField
-                  
+
                   abstract class Foo<T> : OfField<Foo<Any>>
                   """, spec -> spec.afterRecipe(cu -> {
                     AtomicBoolean found = new AtomicBoolean(false);
@@ -737,7 +737,7 @@ void parameterizedType() {
               kotlin(
                 """
                   import java.util.ArrayList
-                  
+
                   class Foo {
                       val l: ArrayList<String> = ArrayList<String>()
                   }
@@ -862,7 +862,7 @@ void privateToThisModifier() {
                   @file:Suppress("UNUSED_VARIABLE")
                   class A<in T>(t: T) {
                       private val t: T = t // visibility for t is PRIVATE_TO_THIS
-                  
+
                       fun test() {
                           val x: T = t // correct
                           val y: T = this.t // also correct
@@ -882,7 +882,7 @@ void javaTypeFullyQualified() {
                   @file:Suppress("UNUSED_PARAMETER")
                   open class Object<T>
                   class Test(name: String, any: Any)
-                  
+
                   fun <T> foo(name: String) =
                       Test(name, object : Object<T>() {})
                   """
@@ -937,7 +937,7 @@ void packageStaticModifier() {
               kotlin(
                 """
                   import java.rmi.server.RemoteStub
-                  
+
                   class A : RemoteStub()
                   """
               )
@@ -976,7 +976,7 @@ interface A
                   interface B
                   interface C
                   interface D
-                  
+
                   class KotlinTypeGoat<T, S>  where   S : A, T : D, S : B, T : C
                   """, spec -> spec.afterRecipe(cu -> {
                       AtomicBoolean found = new AtomicBoolean(false);
@@ -1611,7 +1611,7 @@ class C
                           }
                       }
                   }
-                  
+
                   val x = A.B.A.C()
                   """,
                 spec -> spec.afterRecipe(cu -> {