java sealed types: permits list highlighting (IDEA-243471)

GitOrigin-RevId: ca4b23403d6926d1c093eb0e2774020a98d83773

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/advHighlightingSealedTypes/PermitsList.java

@@ -0,0 +1,20 @@
+package p;
+interface I0 <error descr="Invalid permits clause: 'I0' must be sealed">permits</error> I {}
+
+sealed interface I extends I0 permits <error descr="Cannot resolve symbol 'Unresolved'">Unresolved</error>, <error descr="Duplicate class: 'p.I1'">I1</error>, <error descr="Duplicate class: 'p.I1'">I1</error>{}
+non-sealed interface I1 extends I {}
+
+sealed interface <error descr="Sealed class must have subclasses">A</error> {}
+class Usage {
+  {
+    class Local implements <error descr="Local classes must not extend sealed classes">A</error> {}
+    A a = new <error descr="Anonymous classes must not extend sealed classes">A</error>() {};
+  }
+}
+
+
+sealed interface Indirect permits <error descr="Invalid permits clause: 'IndirectInheritor' must directly implement 'Indirect'">IndirectInheritor</error>, MiddleMan {}
+non-sealed interface MiddleMan extends Indirect {}
+final class IndirectInheritor implements MiddleMan {}
+
+sealed class AnotherPackage permits <error descr="Class is not allowed to extend sealed class from another package">p1.P1</error> {}