New J2K: add test data for #KT-16662, #KT-15991, #KT-12050

nj2k/testData/newJ2k/issues/kt-16662.java

@@ -0,0 +1,38 @@
+import java.io.Serializable;
+
+class BaseEntity implements Serializable {
+    private static final long serialVersionUID = 1L;
+    private Long id;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+}
+
+class AuditableEntity extends BaseEntity {
+    private String createdBy;
+    private String modifiedBy;
+
+    public String getCreatedBy() {
+        return createdBy;
+    }
+
+    public void setCreatedBy(String createdBy) {
+        this.createdBy = createdBy;
+    }
+
+    public String getModifiedBy() {
+        return modifiedBy;
+    }
+
+    public void setModifiedBy(String modifiedBy) {
+        this.modifiedBy = modifiedBy;
+    }
+
+    private static final long serialVersionUID = 2L;
+
+}

nj2k/testData/newJ2k/issues/kt-16662.kt

@@ -0,0 +1,18 @@
+import java.io.Serializable
+
+internal open class BaseEntity : Serializable {
+    var id: Long? = null
+
+    companion object {
+        private const val serialVersionUID = 1L
+    }
+}
+
+internal class AuditableEntity : BaseEntity() {
+    var createdBy: String? = null
+    var modifiedBy: String? = null
+
+    companion object {
+        private const val serialVersionUID = 2L
+    }
+}