Merge pull request #17 from dhis2/TECH-1449

fix: Implement readable toString for PredictableRandomizer [TECH-1449]

Author: enricocolasante

src/main/java/org/hisp/dhis/utils/PredictableRandomizer.java

@@ -47,8 +47,11 @@ public class PredictableRandomizer implements Randomizer {
 
     private final Faker faker;
 
+    private final long seed;
+
     public PredictableRandomizer( long seed )
     {
+        this.seed = seed;
         this.rnd = new Random( seed );
         this.faker = new Faker( rnd );
     }
@@ -79,12 +82,6 @@ public <T> List<T> randomElementsFromList( List<T> list, int size )
         return resultList;
     }
 
-    @Override
-    public String randomString()
-    {
-        return this.faker.programmingLanguage().name();
-    }
-
     public String randomString( int size )
     {
         return this.faker.lorem().characters( size, true, false );
@@ -132,11 +129,6 @@ public String randomNationalId() {
         return this.faker.idNumber().valid();
     }
 
-    @Override
-    public Date randomAdultBirthday() {
-        return this.faker.date().birthday( 18, 80 );
-    }
-
     @Override
     public Date randomBirthday(int minAge, int maxAge){
         return this.faker.date().birthday( minAge, maxAge );
@@ -191,4 +183,9 @@ private LocalDate toLocalDate( Date dateToConvert )
     {
         return dateToConvert.toInstant().atZone( ZoneId.systemDefault() ).toLocalDate();
     }
+
+    @Override
+    public String toString() {
+        return "PredictableRandomizer("+ this.seed +")";
+    }
 }

src/main/java/org/hisp/dhis/utils/Randomizer.java

@@ -49,7 +49,9 @@ default <T> T randomElementFromList( List<T> list )
      *
      * @return a String
      */
-    String randomString();
+    default String randomString(){
+        return randomString(randomInt(20));
+    }
 
     /**
      * Returns random string of alphabetical characters.
@@ -125,7 +127,9 @@ default <T> T randomElementFromList( List<T> list )
      *
      * @return a birthday date
      */
-    Date randomAdultBirthday();
+    default Date randomAdultBirthday(){
+        return randomBirthday(18, 80);
+    };
 
     /**
      * Generates random birthday date with age
@@ -141,7 +145,7 @@ default <T> T randomElementFromList( List<T> list )
      * @param wordCount number of words in the text
      * @return a long text
      */
-    String randomLongText(int wordCount );
+    String randomLongText( int wordCount );
 
     /**
      * Generates random phone number