#104 Adding additional unit test.

phileas-model/src/main/java/ai/philterd/phileas/model/policy/filters/strategies/dynamic/SurnameFilterStrategy.java

@@ -137,7 +137,7 @@ public Replacement getReplacement(String label, String context, String documentI
             }
 
             replacement = maskCharacter.repeat(characters);
-            
+
         } else if(StringUtils.equalsIgnoreCase(strategy, RANDOM_REPLACE)) {
 
             // Default to document scope.

phileas-model/src/test/java/ai/philterd/test/phileas/model/policy/filters/strategies/AbstractFilterStrategyTest.java

@@ -231,7 +231,7 @@ public void replacement10() throws Exception {
     }
 
     @Test
-    public void replacementWithMaskCharacter() throws Exception {
+    public void replacementWithMaskCharacterForSameLength() throws Exception {
 
         final AnonymizationService anonymizationService = Mockito.mock(AnonymizationService.class);
         final AnonymizationCacheService anonymizationCacheService = Mockito.mock(AnonymizationCacheService.class);
@@ -240,6 +240,7 @@ public void replacementWithMaskCharacter() throws Exception {
 
         final AbstractFilterStrategy strategy = getFilterStrategy();
         strategy.setStrategy(AbstractFilterStrategy.MASK);
+        strategy.setMaskLength("same");
 
         final String token = "token";
         final Replacement replacement = strategy.getReplacement("name", "context", "docId", token, WINDOW, null, null, anonymizationService, null);
@@ -249,6 +250,27 @@ public void replacementWithMaskCharacter() throws Exception {
 
     }
 
+    @Test
+    public void replacementWithMaskCharacterForSetLength() throws Exception {
+
+        final AnonymizationService anonymizationService = Mockito.mock(AnonymizationService.class);
+        final AnonymizationCacheService anonymizationCacheService = Mockito.mock(AnonymizationCacheService.class);
+
+        when(anonymizationService.getAnonymizationCacheService()).thenReturn(anonymizationCacheService);
+
+        final AbstractFilterStrategy strategy = getFilterStrategy();
+        strategy.setStrategy(AbstractFilterStrategy.MASK);
+        strategy.setMaskCharacter("#");
+        strategy.setMaskLength("10");
+
+        final String token = "token";
+        final Replacement replacement = strategy.getReplacement("name", "context", "docId", token, WINDOW, null, null, anonymizationService, null);
+
+        Assertions.assertEquals(replacement.getReplacement(), "##########");
+        Assertions.assertEquals(replacement.getReplacement().length(), 10);
+
+    }
+
     @Test
     public void evaluateCondition1() throws IOException {