Fixes #465 Maps without author can be updated by anyone

Author: bukajsytlos

src/main/java/com/faforever/api/map/MapService.java

@@ -45,7 +45,6 @@
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
-import java.util.Objects;
 import java.util.Optional;
 import java.util.regex.Pattern;
 import java.util.stream.Collectors;
@@ -343,12 +342,10 @@ private Optional<Map> validateMapMetadata(MapLuaAccessor mapLua, MapNameBuilder
     Optional<Map> existingMapOptional = mapRepository.findOneByDisplayName(displayName);
     existingMapOptional
       .ifPresent(existingMap -> {
-        Optional.ofNullable(existingMap.getAuthor())
-          .filter(existingMapAuthor -> !Objects.equals(existingMapAuthor, author))
-          .ifPresent(existingMapAuthor -> {
-            throw ApiException.of(ErrorCode.MAP_NOT_ORIGINAL_AUTHOR, existingMap.getDisplayName());
-          });
-
+        final Player existingMapAuthor = existingMap.getAuthor();
+        if (existingMapAuthor == null || !existingMapAuthor.equals(author)) {
+          throw ApiException.of(ErrorCode.MAP_NOT_ORIGINAL_AUTHOR, existingMap.getDisplayName());
+        }
         if (existingMap.getVersions().stream()
           .anyMatch(mapVersion -> mapVersion.getVersion() == newVersion)) {
           throw ApiException.of(ErrorCode.MAP_VERSION_EXISTS, existingMap.getDisplayName(), newVersion);

src/test/java/com/faforever/api/map/MapServiceTest.java

@@ -282,6 +282,19 @@ void notCorrectAuthor() {
       uploadFails(ErrorCode.MAP_NOT_ORIGINAL_AUTHOR, "command_conquer_rush.v0007.zip");
     }
 
+    @Test
+    void annonymousAuthor() {
+      when(fafApiProperties.getMap()).thenReturn(mapProperties);
+
+      Player me = new Player();
+      me.setId(1);
+
+      com.faforever.api.data.domain.Map map = new com.faforever.api.data.domain.Map().setAuthor(null);
+      when(mapRepository.findOneByDisplayName(any())).thenReturn(Optional.of(map));
+
+      uploadFails(ErrorCode.MAP_NOT_ORIGINAL_AUTHOR, "command_conquer_rush.v0007.zip");
+    }
+
     @Test
     void versionExistsAlready() {
       when(fafApiProperties.getMap()).thenReturn(mapProperties);