fix build & tests

Author: timo-abele

src/main/java/org/openrewrite/staticanalysis/LambdaBlockToExpression.java

@@ -92,17 +92,22 @@ private static boolean hasLambdaArgument(J.MethodInvocation method) {
         return hasLambdaArgument;
     }
 
-        // Check whether a method has overloading methods in the declaring class
-    static boolean hasAmbiguousMethodOverloading(J.MethodInvocation method) {
+    // Check whether a method has overloading methods in the declaring class
+    private static boolean hasAmbiguousMethodOverloading(J.MethodInvocation method) {
         JavaType.Method methodType = method.getMethodType();
+        String methodName = methodType.getName();
+        return methodType != null && hasAmbiguousMethodOverloading(methodType, method.getArguments(), methodName);
+    }
 
-        if(methodType == null) {
-            return false;
-        }
-        int numberOfArguments = method.getArguments().size();
+    static boolean hasAmbiguousMethodOverloading(MethodCall method) {
+        JavaType.Method methodType = method.getMethodType();
+        String methodName = methodType.getName();
+        return methodType != null && hasAmbiguousMethodOverloading(methodType, method.getArguments(), methodName);
+    }
 
     // TODO this is actually more complex in the presence of generics and inheritance
-        String methodName = methodType.getName();
+    static boolean hasAmbiguousMethodOverloading(JavaType.Method methodType, List<Expression> arguments, String methodName) {
+        int numberOfArguments = arguments.size();
 
         //all methods of the given type
         List<JavaType.Method> methodsOfType = Optional.of(methodType)
@@ -128,7 +133,7 @@ static boolean hasAmbiguousMethodOverloading(J.MethodInvocation method) {
         // then there is no ambiguity
         for (int i = 0; i < numberOfArguments; i++) {
             int finalI = i;
-            if (method.getArguments().get(i) instanceof J.Lambda) {
+            if (arguments.get(i) instanceof J.Lambda) {
                 long distinctElementsCount = potentiallyOverLoadedMethods.stream()
                     .map(m -> m.getParameterTypes().get(finalI))
                     .distinct().count();

src/main/java/org/openrewrite/staticanalysis/RemoveRedundantTypeCast.java

@@ -24,7 +24,7 @@
 import java.util.List;
 import java.util.Set;
 
-import static org.openrewrite.staticanalysis.LambdaBlockToExpression.hasMethodOverloading;
+import static org.openrewrite.staticanalysis.LambdaBlockToExpression.hasAmbiguousMethodOverloading;
 
 @Incubating(since = "7.23.0")
 public class RemoveRedundantTypeCast extends Recipe {
@@ -74,8 +74,7 @@ public J visitTypeCast(J.TypeCast typeCast, ExecutionContext ctx) {
                 } else if (parentValue instanceof MethodCall) {
                     MethodCall methodCall = (MethodCall) parentValue;
                     JavaType.Method methodType = methodCall.getMethodType();
-                    int numberOfArguments = methodCall.getArguments().size();
-                    if (methodType == null || hasMethodOverloading(methodType, numberOfArguments)) {
+                    if (methodType == null || hasAmbiguousMethodOverloading(methodCall)) {
                         return visited;
                     } else if (!methodType.getParameterTypes().isEmpty()) {
                         List<Expression> arguments = methodCall.getArguments();