[java] report access to package-private members declared in production code from tests (IDEA-372858)

GitOrigin-RevId: 6f046186e0f0a587e1aaab31dd55b9f76a28db96

java/java-tests/testData/ig/com/siyeh/igtest/dependency/suspicious_package_private_access/depTests/xxx/AnotherPackagePrivateClass.java

@@ -0,0 +1,3 @@
+package xxx;
+
+class AnotherPackagePrivateClass {}

java/java-tests/testData/ig/com/siyeh/igtest/dependency/suspicious_package_private_access/depTests/xxx/PackagePrivateClassTest.java

@@ -0,0 +1,15 @@
+package xxx;
+
+public class PackagePrivateClassTest extends PublicClass {
+  public void test1() {
+    new <warning descr="Class xxx.PackagePrivateClass is package-private and used in tests, but declared in the production source">PackagePrivateClass</warning>();
+  }
+  
+  public void test2() {
+    new AnotherPackagePrivateClass();
+  }
+
+  @Override
+  public void <warning descr="Method packagePrivateMethod() in tests overrides a package-private method from class xxx.PublicClass which is declared in the production source">packagePrivateMethod</warning>(){
+  }
+}