javax.annotation.concurrent.Immutable#com.helger.commons.collection.impl.CommonsHashSet源码实例Demo

@Test
public void testAll ()
{
  final ICommonsSet <Class <?>> aClasses = new CommonsHashSet <> ();
  final ICommonsSet <String> aFilenames = new CommonsHashSet <> ();
  for (final EUBL23DocumentType e : EUBL23DocumentType.values ())
  {
    assertNotNull (e.getImplementationClass ());
    assertTrue (StringHelper.hasText (e.getLocalName ()));
    assertTrue (StringHelper.hasText (e.getNamespaceURI ()));
    assertTrue (e.getAllXSDResources ().size () >= 1);
    for (final IReadableResource aRes : e.getAllXSDResources ())
      assertTrue (e.name (), aRes.exists ());
    assertNotNull (e.getSchema ());
    assertSame (e.getSchema (), e.getSchema ());
    assertSame (e, EUBL23DocumentType.valueOf (e.name ()));
    assertTrue (aClasses.add (e.getImplementationClass ()));
    assertTrue (aFilenames.add (e.getAllXSDResources ().getFirst ().getPath ()));
  }
}
 

private void _testPutRandom (final float fillFactor)
{
  final Random aRandom = new Random ();
  final int SIZE = 100 * 1000;
  final ICommonsSet <Integer> set = new CommonsHashSet <> (SIZE);
  final int [] vals = new int [SIZE];
  while (set.size () < SIZE)
    set.add (Integer.valueOf (aRandom.nextInt ()));
  int i = 0;
  for (final Integer v : set)
    vals[i++] = v.intValue ();

  final IntObjectMap <String> map = _makeMap (100, fillFactor);
  for (i = 0; i < vals.length; ++i)
  {
    assertNull ("Inserting " + vals[i], map.put (vals[i], _make (vals[i])));
    assertEquals (i + 1, map.size ());
    assertEquals (_make (vals[i]), map.get (vals[i]));
  }
  // now check the final state
  for (i = 0; i < vals.length; ++i)
    assertEquals (_make (vals[i]), map.get (vals[i]));
}
 

private void _testPutRandom (final float fillFactor)
{
  final Random aRandom = new Random ();
  final int SIZE = 100 * 1000;
  final Set <Integer> set = new CommonsHashSet <> (SIZE);
  final int [] vals = new int [SIZE];
  while (set.size () < SIZE)
    set.add (Integer.valueOf (aRandom.nextInt ()));
  int i = 0;
  for (final Integer v : set)
    vals[i++] = v.intValue ();

  final IntFloatMap map = _makeMap (100, fillFactor);
  for (i = 0; i < vals.length; ++i)
  {
    assertEquals ("Inserting " + vals[i], IntFloatMap.NO_VALUE, map.put (vals[i], vals[i]), DELTA);
    assertEquals (i + 1, map.size ());
    assertEquals (vals[i], map.get (vals[i]), DELTA);
  }
  // now check the final state
  for (i = 0; i < vals.length; ++i)
    assertEquals (vals[i], map.get (vals[i]), DELTA);
}
 

private void _testPutRandom (final float fillFactor)
{
  final Random aRandom = new Random ();
  final int SIZE = 100 * 1000;
  final Set <Integer> set = new CommonsHashSet <> (SIZE);
  final int [] vals = new int [SIZE];
  while (set.size () < SIZE)
    set.add (Integer.valueOf (aRandom.nextInt ()));
  int i = 0;
  for (final Integer v : set)
    vals[i++] = v.intValue ();

  final IntDoubleMap map = _makeMap (100, fillFactor);
  for (i = 0; i < vals.length; ++i)
  {
    assertEquals ("Inserting " + vals[i], IntDoubleMap.NO_VALUE, map.put (vals[i], vals[i]), DELTA);
    assertEquals (i + 1, map.size ());
    assertEquals (vals[i], map.get (vals[i]), DELTA);
  }
  // now check the final state
  for (i = 0; i < vals.length; ++i)
    assertEquals (vals[i], map.get (vals[i]), DELTA);
}
 

private void _testPutRandom (final float fillFactor)
{
  final Random aRandom = new Random ();
  final int SIZE = 100 * 1000;
  final ICommonsSet <Integer> set = new CommonsHashSet <> (SIZE);
  final int [] vals = new int [SIZE];
  while (set.size () < SIZE)
    set.add (Integer.valueOf (aRandom.nextInt ()));
  int i = 0;
  for (final Integer v : set)
    vals[i++] = v.intValue ();

  final IntIntMap map = _makeMap (100, fillFactor);
  for (i = 0; i < vals.length; ++i)
  {
    assertEquals (0, map.put (vals[i], vals[i]));
    assertEquals (i + 1, map.size ());
    assertEquals (vals[i], map.get (vals[i]));
  }
  // now check the final state
  for (i = 0; i < vals.length; ++i)
    assertEquals (vals[i], map.get (vals[i]));
}
 

@Nonnull
private MapBasedNamespaceContext _addMapping (@Nonnull final String sPrefix,
                                              @Nonnull final String sNamespaceURI,
                                              final boolean bAllowOverwrite)
{
  ValueEnforcer.notNull (sPrefix, "Prefix");
  ValueEnforcer.notNull (sNamespaceURI, "NamespaceURI");
  if (!bAllowOverwrite && m_aPrefix2NS.containsKey (sPrefix))
    throw new IllegalArgumentException ("The prefix '" +
                                        sPrefix +
                                        "' is already registered to '" +
                                        m_aPrefix2NS.get (sPrefix) +
                                        "'!");

  if (sPrefix.equals (XMLConstants.DEFAULT_NS_PREFIX))
    m_sDefaultNamespaceURI = sNamespaceURI;
  m_aPrefix2NS.put (sPrefix, sNamespaceURI);
  m_aNS2Prefix.computeIfAbsent (sNamespaceURI, x -> new CommonsHashSet <> ()).add (sPrefix);
  return this;
}
 

@Test
public void testStringCombination2 ()
{
  final ICommonsList <String> aElements = new CommonsArrayList <> (A, B, B, C);
  final CombinationGenerator <String> x = new CombinationGenerator <> (aElements, 0);
  assertEquals (BigInteger.ONE, x.getTotalCombinations ());
  assertEquals (BigInteger.ONE, x.getCombinationsLeft ());

  final ICommonsList <ICommonsList <String>> aResultsWithDuplicates = new CommonsArrayList <> ();
  final ICommonsSet <ICommonsList <String>> aResultsWithoutDuplicates = new CommonsHashSet <> ();
  while (x.hasNext ())
  {
    final ICommonsList <String> aResult = x.next ();
    aResultsWithDuplicates.add (aResult);
    aResultsWithoutDuplicates.add (aResult);
  }
  assertEquals (1, aResultsWithDuplicates.size ());
  assertEquals (1, aResultsWithoutDuplicates.size ());
}
 

@Ignore ("Simply wrong assumption")
@Test
public void testRedundancy ()
{
  final ICommonsList <String> aInputList = new CommonsArrayList <> ("a", "b", "c", "d", "e", "f", "g", "h");

  // Build all permutations of the input list, using all available slots
  final ICommonsSet <ICommonsList <String>> aSimplePermutations = new CommonsHashSet <> ();
  CombinationGenerator.addAllPermutations (aInputList, aInputList.size (), aSimplePermutations);

  // Flexible combination generator
  final ICommonsSet <ICommonsList <String>> aFlexiblePermutations = CombinationGeneratorFlexible.getCombinations (aInputList,
                                                                                                                  true);
  assertTrue (aFlexiblePermutations.size () >= aSimplePermutations.size ());

  // Now the assumptions: I assume that all permutations from the flexible
  // generator are also contained in all permutations
  for (final ICommonsList <String> aList : aFlexiblePermutations)
    assertTrue (aList.toString (), aSimplePermutations.contains (aList));
}
 

@Test
public void testList ()
{
  final ICommonsList <String> aCont = new CommonsArrayList <> ("a", "b", "c");
  assertTrue (EqualsHelper.equalsCollection (aCont, aCont));
  assertTrue (EqualsHelper.equalsCollection (aCont, CollectionHelper.makeUnmodifiable (aCont)));
  assertTrue (EqualsHelper.equalsCollection (aCont, Collections.synchronizedList (aCont)));
  assertTrue (EqualsHelper.equalsCollection (aCont, new CommonsArrayList <> (aCont)));
  assertTrue (EqualsHelper.equalsCollection (aCont, new CommonsLinkedList <> (aCont)));
  assertTrue (EqualsHelper.equalsCollection (aCont, new CommonsVector <> (aCont)));
  assertTrue (EqualsHelper.equalsCollection (aCont, new NonBlockingStack <> (aCont)));
  assertTrue (EqualsHelper.equalsCollection (new CommonsArrayList <String> (), new CommonsLinkedList <String> ()));
  assertTrue (EqualsHelper.equalsCollection (new NonBlockingStack <String> (), new CommonsVector <String> ()));
  assertTrue (EqualsHelper.equalsCollection (new NonBlockingStack <String> (), new Stack <String> ()));

  assertFalse (EqualsHelper.equalsCollection (aCont, new CommonsLinkedList <String> ()));
  assertFalse (EqualsHelper.equalsCollection (new CommonsLinkedList <String> (), aCont));
  assertFalse (EqualsHelper.equalsCollection (aCont, new CommonsArrayList <String> ()));
  assertFalse (EqualsHelper.equalsCollection (aCont, new CommonsArrayList <> ("a", "b")));
  assertFalse (EqualsHelper.equalsCollection (aCont, new CommonsArrayList <> ("A", "b", "c")));
  assertFalse (EqualsHelper.equalsCollection (aCont, new CommonsArrayList <> ("a", "B", "c")));
  assertFalse (EqualsHelper.equalsCollection (aCont, new CommonsArrayList <> ("a", "b", "C")));
  assertFalse (EqualsHelper.equalsCollection (aCont, new CommonsArrayList <> ("a", "b", "c", "d")));
  assertFalse (EqualsHelper.equalsCollection (aCont, new CommonsHashSet <> ("a", "b", "c")));
  assertFalse (EqualsHelper.equalsCollection (aCont, ArrayHelper.newArray ("a", "b", "c")));
}
 

@Test
public void testSet ()
{
  final ICommonsSet <String> aCont = new CommonsHashSet <> ("a", "b", "c");
  assertTrue (EqualsHelper.equalsCollection (aCont, aCont));
  assertTrue (EqualsHelper.equalsCollection (aCont, CollectionHelper.makeUnmodifiable (aCont)));
  assertTrue (EqualsHelper.equalsCollection (aCont, Collections.synchronizedSet (aCont)));
  assertTrue (EqualsHelper.equalsCollection (aCont, new CommonsHashSet <> (aCont)));
  assertTrue (EqualsHelper.equalsCollection (aCont, new CommonsLinkedHashSet <> (aCont)));
  assertTrue (EqualsHelper.equalsCollection (aCont, new CommonsTreeSet <> (aCont)));
  assertTrue (EqualsHelper.equalsCollection (new CommonsHashSet <String> (), new CommonsLinkedHashSet <String> ()));
  assertTrue (EqualsHelper.equalsCollection (new CommonsTreeSet <String> (), new CommonsHashSet <String> ()));

  assertFalse (EqualsHelper.equalsCollection (aCont, new CommonsHashSet <String> ()));
  assertFalse (EqualsHelper.equalsCollection (new CommonsHashSet <String> (), aCont));
  assertFalse (EqualsHelper.equalsCollection (aCont, new CommonsTreeSet <String> ()));
  assertFalse (EqualsHelper.equalsCollection (aCont, new CommonsHashSet <> ("a", "b")));
  assertFalse (EqualsHelper.equalsCollection (aCont, new CommonsHashSet <> ("A", "b", "c")));
  assertFalse (EqualsHelper.equalsCollection (aCont, new CommonsHashSet <> ("a", "B", "c")));
  assertFalse (EqualsHelper.equalsCollection (aCont, new CommonsHashSet <> ("a", "b", "C")));
  assertFalse (EqualsHelper.equalsCollection (aCont, new CommonsHashSet <> ("a", "b", "c", "d")));
  assertFalse (EqualsHelper.equalsCollection (aCont, new CommonsArrayList <> ("a", "b", "c")));
  assertFalse (EqualsHelper.equalsCollection (aCont, ArrayHelper.newArray ("a", "b", "c")));
}
 

@Test
public void testMap ()
{
  final StringMap aMap = new StringMap ("a", "b").add ("c", "d");
  assertTrue (EqualsHelper.equalsCollection (aMap, aMap));
  assertTrue (EqualsHelper.equalsCollection (aMap, CollectionHelper.makeUnmodifiable (aMap)));
  assertTrue (EqualsHelper.equalsCollection (aMap, Collections.synchronizedMap (aMap)));
  assertTrue (EqualsHelper.equalsCollection (aMap, new StringMap ("a", "b").add ("c", "d")));
  assertTrue (EqualsHelper.equalsCollection (new CommonsHashMap <Integer, Integer> (), new CommonsHashMap <Double, Float> ()));

  assertFalse (EqualsHelper.equalsCollection (aMap, new CommonsHashMap <Integer, Integer> ()));
  assertFalse (EqualsHelper.equalsCollection (new CommonsHashMap <Integer, Integer> (), aMap));
  assertFalse (EqualsHelper.equalsCollection (aMap, new StringMap ("a", "b")));
  assertFalse (EqualsHelper.equalsCollection (aMap, new StringMap ("A", "b").add ("c", "d")));
  assertFalse (EqualsHelper.equalsCollection (aMap, new StringMap ("a", "B").add ("c", "d")));
  assertFalse (EqualsHelper.equalsCollection (aMap, new StringMap ("a", "b").add ("C", "d")));
  assertFalse (EqualsHelper.equalsCollection (aMap, new StringMap ("a", "b").add ("c", "D")));
  assertFalse (EqualsHelper.equalsCollection (aMap, new StringMap ("a", "b").add ("c", "d").add ("e", "f")));
  assertFalse (EqualsHelper.equalsCollection (aMap, new CommonsArrayList <> ("a", "b", "c")));
  assertFalse (EqualsHelper.equalsCollection (aMap, new CommonsHashSet <> ("a", "b", "c")));
  assertFalse (EqualsHelper.equalsCollection (aMap, ArrayHelper.newArray ("a", "b", "c")));
}
 

@Test
public void testArray ()
{
  final String [] aArray = ArrayHelper.newArray ("a", "b", "c");
  assertTrue (EqualsHelper.equalsCollection (aArray, aArray));
  assertTrue (EqualsHelper.equalsCollection (aArray, ArrayHelper.newArray ("a", "b", "c")));
  assertTrue (EqualsHelper.equalsCollection (new String [0], new String [] {}));

  assertFalse (EqualsHelper.equalsCollection (aArray, new String [0]));
  assertFalse (EqualsHelper.equalsCollection (new String [0], aArray));
  assertFalse (EqualsHelper.equalsCollection (aArray, ArrayHelper.newArray ("a", "b")));
  assertFalse (EqualsHelper.equalsCollection (aArray, ArrayHelper.newArray ("A", "b", "c")));
  assertFalse (EqualsHelper.equalsCollection (aArray, ArrayHelper.newArray ("a", "B", "c")));
  assertFalse (EqualsHelper.equalsCollection (aArray, ArrayHelper.newArray ("a", "b", "C")));
  assertFalse (EqualsHelper.equalsCollection (aArray, ArrayHelper.newArray ("a", "b", "c", "d")));
  assertFalse (EqualsHelper.equalsCollection (aArray, new CommonsArrayList <> ("a", "b", "c")));
  assertFalse (EqualsHelper.equalsCollection (aArray, new CommonsHashSet <> ("a", "b", "c")));
}
 

@Test
public void testIterable ()
{
  final Iterable <String> aCont = new MockIterable ("a", "b", "c");
  assertTrue (EqualsHelper.equalsCollection (aCont, aCont));
  assertTrue (EqualsHelper.equalsCollection (aCont, new MockIterable ("a", "b", "c")));
  assertTrue (EqualsHelper.equalsCollection (new MockIterable (), new MockIterable ()));

  assertFalse (EqualsHelper.equalsCollection (aCont, new MockIterable ()));
  assertFalse (EqualsHelper.equalsCollection (new MockIterable (), aCont));
  assertFalse (EqualsHelper.equalsCollection (aCont, new MockIterable ("a", "b")));
  assertFalse (EqualsHelper.equalsCollection (aCont, new MockIterable ("A", "b", "c")));
  assertFalse (EqualsHelper.equalsCollection (aCont, new MockIterable ("a", "B", "c")));
  assertFalse (EqualsHelper.equalsCollection (aCont, new MockIterable ("a", "b", "C")));
  assertFalse (EqualsHelper.equalsCollection (aCont, new MockIterable ("a", "b", "c", "d")));
  assertFalse (EqualsHelper.equalsCollection (aCont, new CommonsHashSet <> ("a", "b", "c")));
  assertFalse (EqualsHelper.equalsCollection (aCont, ArrayHelper.newArray ("a", "b", "c")));
}
 

@Test
public void testCtor ()
{
  NonBlockingStack <String> st = new NonBlockingStack <> ();
  assertTrue (st.isEmpty ());
  assertFalse (st.iterator ().hasNext ());
  st = new NonBlockingStack <> ("s", "t");
  assertEquals (2, st.size ());
  assertEquals ("s", st.firstElement ());
  assertTrue (st.iterator ().hasNext ());
  st = new NonBlockingStack <> ((String []) null);
  assertTrue (st.isEmpty ());
  assertFalse (st.iterator ().hasNext ());
  st = new NonBlockingStack <> (new CommonsArrayList <> ("s", "t"));
  assertEquals (2, st.size ());
  assertEquals ("s", st.firstElement ());
  assertTrue (st.iterator ().hasNext ());
  st = new NonBlockingStack <> (new CommonsHashSet <String> ());
  assertTrue (st.isEmpty ());
  assertFalse (st.iterator ().hasNext ());
  st = new NonBlockingStack <> (new NonBlockingStack <> ("s", "t"));
  assertEquals (2, st.size ());
  assertEquals ("s", st.firstElement ());
  assertTrue (st.iterator ().hasNext ());
}
 

@Test
public void testGetDifference ()
{
  final ICommonsList <String> l1 = newList ("Hello", "Welt", "from", "Vienna");
  final ICommonsList <String> l2 = newList ("Welt", "from");

  // Result should be "Hello" and "Vienna"
  final Set <String> ret = getDifference (l1, l2);
  assertNotNull (ret);
  assertEquals (2, ret.size ());
  assertTrue (ret.contains ("Hello"));
  assertFalse (ret.contains ("Welt"));
  assertFalse (ret.contains ("from"));
  assertTrue (ret.contains ("Vienna"));

  assertEquals (4, getDifference (l1, new CommonsVector <String> ()).size ());
  assertEquals (4, getDifference (l1, null).size ());
  assertEquals (0, getDifference (new CommonsHashSet <String> (), l2).size ());
  assertEquals (0, getDifference (null, l2).size ());
}
 

@Test
public void testAll ()
{
  final ICommonsSet <Class <?>> aClasses = new CommonsHashSet <> ();
  final ICommonsSet <String> aFilenames = new CommonsHashSet <> ();
  for (final EUBL22DocumentType e : EUBL22DocumentType.values ())
  {
    assertNotNull (e.getImplementationClass ());
    assertTrue (StringHelper.hasText (e.getLocalName ()));
    assertTrue (StringHelper.hasText (e.getNamespaceURI ()));
    assertTrue (e.getAllXSDResources ().size () >= 1);
    for (final IReadableResource aRes : e.getAllXSDResources ())
      assertTrue (e.name (), aRes.exists ());
    assertNotNull (e.getSchema ());
    assertSame (e.getSchema (), e.getSchema ());
    assertSame (e, EUBL22DocumentType.valueOf (e.name ()));
    assertTrue (aClasses.add (e.getImplementationClass ()));
    assertTrue (aFilenames.add (e.getAllXSDResources ().getFirst ().getPath ()));
  }
}
 

@Nonnull
@ReturnsMutableCopy
@CodingStyleguideUnaware
public Set <Map.Entry <KEYTYPE, VALUETYPE>> entrySet ()
{
  final ICommonsSet <Map.Entry <KEYTYPE, VALUETYPE>> aSet = new CommonsHashSet <> (size ());
  if (m_bHasElement)
    aSet.add (new MapEntry <> (m_aKey, m_aValue));
  return aSet;
}
 

@Override
@Nonnull
@ReturnsMutableCopy
protected final CommonsHashSet <VALUETYPE> createNewCollection ()
{
  return new CommonsHashSet <> ();
}
 

@Override
@Nonnull
@ReturnsMutableCopy
protected final CommonsHashSet <VALUETYPE> createNewCollection ()
{
  return new CommonsHashSet <> ();
}
 

@Override
@Nonnull
@ReturnsMutableCopy
protected final CommonsHashSet <VALUETYPE> createNewCollection ()
{
  return new CommonsHashSet <> ();
}
 

@Override
@Nonnull
@ReturnsMutableCopy
protected final CommonsHashSet <VALUETYPE> createNewCollection ()
{
  return new CommonsHashSet <> ();
}
 

@Override
@Nonnull
@ReturnsMutableCopy
protected final CommonsHashSet <VALUETYPE> createNewCollection ()
{
  return new CommonsHashSet <> ();
}
 

@Nonnull
@ReturnsMutableCopy
public ICommonsSet <IMutableDirectedGraphNode> getAllFromNodes ()
{
  final ICommonsSet <IMutableDirectedGraphNode> ret = new CommonsHashSet <> ();
  if (m_aIncoming != null)
    CollectionHelper.findAllMapped (m_aIncoming.values (), IMutableDirectedGraphRelation::getFrom, ret::add);
  return ret;
}
 

@Nonnull
@ReturnsMutableCopy
public ICommonsSet <IMutableDirectedGraphNode> getAllToNodes ()
{
  final ICommonsSet <IMutableDirectedGraphNode> ret = new CommonsHashSet <> ();
  if (m_aOutgoing != null)
    CollectionHelper.findAllMapped (m_aOutgoing.values (), IMutableDirectedGraphRelation::getTo, ret::add);
  return ret;
}
 

@Test
public void testCycles2 ()
{
  final SimpleDirectedGraph sg = new SimpleDirectedGraph ();
  for (int i = 1; i <= 6; ++i)
    sg.createNode (Integer.toString (i));

  // first cycle
  sg.createRelation ("1", "2");
  assertFalse (sg.containsCycles ());
  sg.createRelation ("2", "3");
  assertFalse (sg.containsCycles ());
  sg.createRelation ("3", "1");
  assertTrue (sg.containsCycles ());

  // Second cycle
  sg.createRelation ("4", "5");
  assertTrue (sg.containsCycles ());
  sg.createRelation ("5", "6");
  assertTrue (sg.containsCycles ());
  sg.createRelation ("6", "4");
  assertTrue (sg.containsCycles ());

  final ICommonsSet <String> aRelationIDs1 = sg.getAllRelationIDs ();
  final ICommonsSet <String> aRelationIDs2 = new CommonsHashSet <> ();
  sg.forEachRelation (x -> aRelationIDs2.add (x.getID ()));
  assertTrue (EqualsHelper.equalsCollection (aRelationIDs1, aRelationIDs2));
}
 

@Test
public void testRead ()
{
  ICommonsList <String> aList = new CommonsArrayList <> ();
  final IReadableResource aRes = new ClassPathResource ("xml/list.xml");
  XMLListHandler.readList (aRes, aList);
  assertEquals (3, aList.size ());
  assertTrue (aList.contains ("item1"));

  assertNotNull (XMLListHandler.readList (aRes));
  assertNull (XMLListHandler.readList (new ClassPathResource ("test1.txt")));
  assertEquals (3, XMLListHandler.readList (aRes).size ());
  assertTrue (XMLListHandler.readList (aRes).contains ("item1"));

  assertTrue (XMLListHandler.writeList (aList, new NonBlockingByteArrayOutputStream ()).isSuccess ());

  final String sXML = "<root><item/><item value='a' /><item value='a' /></root>";
  aList = XMLListHandler.readList (new StringInputStreamProvider (sXML, StandardCharsets.ISO_8859_1));
  assertNotNull (aList);
  assertEquals (2, aList.size ());
  assertEquals ("a", aList.get (0));
  assertEquals ("a", aList.get (1));

  final ICommonsSet <String> aSet = new CommonsHashSet <> ();
  XMLListHandler.readList (new StringInputStreamProvider (sXML, StandardCharsets.ISO_8859_1), aSet);
  assertEquals (1, aSet.size ());
  assertTrue (aSet.contains ("a"));

  assertTrue (XMLListHandler.writeList (aList, new NonBlockingByteArrayOutputStream ()).isSuccess ());
  assertTrue (XMLListHandler.writeList (aList, new ByteArrayOutputStreamProvider ()).isSuccess ());
}
 

@Test
public void testIterator ()
{
  final Iterator <Charset> iterator = tested.charsets ();
  final ICommonsSet <Charset> found = new CommonsHashSet<> ();
  while (iterator.hasNext ())
    found.add (iterator.next ());
  assertEquals (3, found.size ());
  final Charset charset1 = tested.charsetForName ("x-IMAP4-modified-UTF7");
  final Charset charset2 = tested.charsetForName ("UTF-7");
  final Charset charset3 = tested.charsetForName ("X-UTF-7-OPTIONAL");
  assertTrue (found.contains (charset1));
  assertTrue (found.contains (charset2));
  assertTrue (found.contains (charset3));
}
 

/**
 * Generate all combinations without duplicates.
 *
 * @param aElements
 *        the elements to distribute to the specified slots (may be empty!)
 * @return a set of slot allocations representing all possible combinations
 */
@Nonnull
@ReturnsMutableCopy
public ICommonsSet <ICommonsList <DATATYPE>> getCombinations (@Nonnull final ICommonsList <DATATYPE> aElements)
{
  ValueEnforcer.notNull (aElements, "Elements");

  final ICommonsSet <ICommonsList <DATATYPE>> aAllResults = new CommonsHashSet <> ();
  iterateAllCombinations (aElements, aAllResults::add);
  return aAllResults;
}
 

/**
 * Get all contained locales that consist only of a non-empty language.
 *
 * @return a set with all contained languages, except "all" and "independent"
 */
@Nonnull
@ReturnsMutableCopy
public ICommonsSet <Locale> getAllLanguages ()
{
  final ICommonsSet <Locale> ret = new CommonsHashSet <> ();
  for (final Locale aLocale : getAllLocales ())
  {
    final String sLanguage = aLocale.getLanguage ();
    if (StringHelper.hasText (sLanguage))
      ret.add (getLocale (sLanguage, null, null));
  }
  return ret;
}
 

/**
 * @return a set with all contained language locales. Never <code>null</code>.
 */
@Nonnull
@ReturnsMutableCopy
public ICommonsSet <Locale> getAllLanguageLocales ()
{
  return m_aRWLock.readLockedGet ( () -> {
    final LocaleCache aLC = LocaleCache.getInstance ();
    return new CommonsHashSet <> (m_aLanguages, sLanguage -> aLC.getLocale (sLanguage, "", ""));
  });
}