Test duplicated custom

Author: fugerit79

fj-core/src/main/resources/core/util/props_utils/duplicated_custom.properties

@@ -0,0 +1,4 @@
+key1=one
+key2=two
+key3=three
+key2=four

fj-core/src/test/java/test/org/fugerit/java/core/util/TestPropsUtils.java

@@ -8,10 +8,18 @@
 import java.io.IOException;
 import java.util.Collection;
 import java.util.Map;
+import java.util.stream.Collectors;
 
 @Slf4j
 public class TestPropsUtils {
 
+    @Test
+    public void testDuplicatedCustom() throws IOException {
+        Collection<Map.Entry<String,String>> duplicated = PropsUtils.findDuplicatedKeys( "file://src/main/resources/core/util/props_utils/duplicated_custom.properties" ).getDuplications();
+        log.info( "duplicated count : {}, keys : {}", duplicated.size(), duplicated.stream().map( e -> e.getKey() ).collect( Collectors.toSet() ) );
+        Assert.assertNotNull( duplicated );
+    }
+
     @Test
     public void testDuplicated1File() throws IOException {
         Collection<Map.Entry<String,String>> duplicated = PropsUtils.findDuplicatedKeys( "file://src/main/resources/core/util/props_utils/duplicated_1.properties" ).getDuplications();