@Test
public void zip() {
List<Object> nulls = Collections.nCopies(this.lazyIterable.size(), null);
List<Object> nullsPlusOne = Collections.nCopies(this.lazyIterable.size() + 1, null);
List<Object> nullsMinusOne = Collections.nCopies(this.lazyIterable.size() - 1, null);
LazyIterable<Pair<Integer, Object>> pairs = this.lazyIterable.zip(nulls);
Assert.assertEquals(
this.lazyIterable.toSet(), pairs.collect(Functions.<Integer>firstOfPair()).toSet());
Assert.assertEquals(nulls, pairs.collect(Functions.<Object>secondOfPair(), Lists.mutable.of()));
LazyIterable<Pair<Integer, Object>> pairsPlusOne = this.lazyIterable.zip(nullsPlusOne);
Assert.assertEquals(
this.lazyIterable.toSet(), pairsPlusOne.collect(Functions.<Integer>firstOfPair()).toSet());
Assert.assertEquals(
nulls, pairsPlusOne.collect(Functions.<Object>secondOfPair(), Lists.mutable.of()));
LazyIterable<Pair<Integer, Object>> pairsMinusOne = this.lazyIterable.zip(nullsMinusOne);
Assert.assertEquals(this.lazyIterable.size() - 1, pairsMinusOne.size());
Assert.assertTrue(
this.lazyIterable.containsAllIterable(
pairsMinusOne.collect(Functions.<Integer>firstOfPair())));
Assert.assertEquals(
this.lazyIterable.zip(nulls).toSet(),
this.lazyIterable.zip(nulls, UnifiedSet.<Pair<Integer, Object>>newSet()));
}
@Test
public void testForEachUsingMap() {
// Test the default batch size calculations
IntegerSum sum1 = new IntegerSum(0);
MutableMap<String, Integer> map1 =
Interval.fromTo(1, 10000).toMap(String::valueOf, Functions.getIntegerPassThru());
ParallelIterate.forEach(map1, new SumProcedure(sum1), new SumCombiner(sum1));
Assert.assertEquals(50005000, sum1.getSum());
// Testing batch size 1
IntegerSum sum2 = new IntegerSum(0);
UnifiedMap<String, Integer> map2 =
(UnifiedMap<String, Integer>)
Interval.fromTo(1, 100).toMap(String::valueOf, Functions.getIntegerPassThru());
ParallelIterate.forEach(
map2, new SumProcedure(sum2), new SumCombiner(sum2), 1, map2.getBatchCount(map2.size()));
Assert.assertEquals(5050, sum2.getSum());
// Testing an uneven batch size
IntegerSum sum3 = new IntegerSum(0);
UnifiedMap<String, Integer> set3 =
(UnifiedMap<String, Integer>)
Interval.fromTo(1, 100).toMap(String::valueOf, Functions.getIntegerPassThru());
ParallelIterate.forEach(
set3, new SumProcedure(sum3), new SumCombiner(sum3), 1, set3.getBatchCount(13));
Assert.assertEquals(5050, sum3.getSum());
}
@Test
public void toSortedMap() {
LazyIterable<Integer> integers = this.newWith(1, 2, 3);
MutableSortedMap<Integer, String> map =
integers.toSortedMap(Functions.getIntegerPassThru(), Functions.getToString());
Verify.assertMapsEqual(TreeSortedMap.newMapWith(1, "1", 2, "2", 3, "3"), map);
Verify.assertListsEqual(FastList.newListWith(1, 2, 3), map.keySet().toList());
}
@Test
public void toMap() {
RichIterable<Integer> integers = this.newWith(1, 2, 3, 4);
MutableMap<String, String> map =
integers.toMap(Functions.getToString(), Functions.getToString());
Assert.assertEquals(
UnifiedMap.<String, String>newWithKeysValues("1", "1", "2", "2", "3", "3", "4", "4"), map);
}
@Override
@Test
public void toSortedMap() {
MutableSortedMap<String, String> map =
this.newBag().toSortedMap(Functions.getStringPassThru(), Functions.getStringPassThru());
Verify.assertEmpty(map);
Verify.assertInstanceOf(TreeSortedMap.class, map);
}
@Test
public void toSortedMap() {
MutableSortedMap<Integer, String> map =
this.newBag().toSortedMap(Integer::valueOf, Functions.<String>getPassThru());
Verify.assertMapsEqual(
this.newBag().toMap(Integer::valueOf, Functions.<String>getPassThru()), map);
Verify.assertListsEqual(Interval.oneTo(this.numKeys()), map.keySet().toList());
}
@Test
public void collectWith() {
ImmutableCollection<Integer> integers = this.classUnderTest();
ImmutableCollection<String> expected =
integers.collect(Functions.chain(Functions.getToString(), StringFunctions.append("!")));
ImmutableCollection<String> actual =
integers.collectWith((argument1, argument2) -> argument1 + argument2, "!");
Assert.assertEquals(expected, actual);
}
@Test
public void getIfAbsentPutWithKey() {
MutableMapIterable<Integer, Integer> map = this.newMapWithKeysValues(1, 1, 2, 2, 3, 3);
Assert.assertNull(map.get(4));
Assert.assertEquals(
Integer.valueOf(4), map.getIfAbsentPutWithKey(4, Functions.getIntegerPassThru()));
Assert.assertEquals(
Integer.valueOf(3), map.getIfAbsentPutWithKey(3, Functions.getIntegerPassThru()));
Verify.assertContainsKeyValue(Integer.valueOf(4), Integer.valueOf(4), map);
}
@Test
public void toMapWithFunctions() {
String tokens = "1:Ted|2:Mary";
Function<String, String> stringPassThruFunction = Functions.getPassThru();
MutableMap<Integer, String> results =
StringIterate.tokensToMap(
tokens, "|", ":", Functions.getStringToInteger(), stringPassThruFunction);
Verify.assertSize(2, results);
Verify.assertContainsKeyValue(1, "Ted", results);
Verify.assertContainsKeyValue(2, "Mary", results);
}
@Test
public void collect_target() {
ImmutableBag<String> strings = this.newBag();
HashBag<String> target = HashBag.<String>newBag();
HashBag<String> actual = strings.collect(Functions.getStringPassThru(), target);
Assert.assertEquals(strings, actual);
Assert.assertSame(target, actual);
Assert.assertEquals(
strings,
strings.collect(Functions.getStringPassThru(), FastList.<String>newList()).toBag());
}
@Test
public void aggregateByNonMutating() {
Function0<Integer> valueCreator = Functions0.value(0);
Function2<Integer, Integer, Integer> sumAggregator = Functions2.integerAddition();
MapIterable<String, Integer> actual =
this.classUnderTest().aggregateBy(Functions.getToString(), valueCreator, sumAggregator);
MapIterable<String, Integer> expected =
this.classUnderTest()
.toBag()
.aggregateBy(Functions.getToString(), valueCreator, sumAggregator);
Assert.assertEquals(expected, actual);
}
@Test
public void aggregateByMutating() {
Procedure2<Counter, Integer> sumAggregator = Counter::add;
MapIterable<String, Counter> actual =
this.classUnderTest()
.aggregateInPlaceBy(Functions.getToString(), Counter::new, sumAggregator);
MapIterable<String, Counter> expected =
this.classUnderTest()
.toBag()
.aggregateInPlaceBy(Functions.getToString(), Counter::new, sumAggregator);
Assert.assertEquals(expected, actual);
}
@Test
public void toSortedMap_with_comparator() {
MutableSortedMap<Integer, String> map =
this.newBag()
.toSortedMap(
Comparators.<Integer>reverseNaturalOrder(),
Integer::valueOf,
Functions.<String>getPassThru());
Verify.assertMapsEqual(
this.newBag().toMap(Integer::valueOf, Functions.<String>getPassThru()), map);
Verify.assertListsEqual(Interval.fromTo(this.numKeys(), 1), map.keySet().toList());
}
@Override
@Test
public void toSortedMap_with_comparator() {
MutableSortedMap<String, String> map =
this.newBag()
.toSortedMap(
Comparators.<String>reverseNaturalOrder(),
Functions.getStringPassThru(),
Functions.getStringPassThru());
Verify.assertEmpty(map);
Verify.assertInstanceOf(TreeSortedMap.class, map);
Assert.assertEquals(Comparators.<String>reverseNaturalOrder(), map.comparator());
}
@Test
public void toSortedMap_with_comparator() {
LazyIterable<Integer> integers = this.newWith(1, 2, 3);
MutableSortedMap<Integer, String> map =
integers.toSortedMap(
Comparators.<Integer>reverseNaturalOrder(),
Functions.getIntegerPassThru(),
Functions.getToString());
Verify.assertMapsEqual(
TreeSortedMap.newMapWith(
Comparators.<Integer>reverseNaturalOrder(), 1, "1", 2, "2", 3, "3"),
map);
Verify.assertListsEqual(FastList.newListWith(3, 2, 1), map.keySet().toList());
}
@Test
public void zipWithIndex() {
LazyIterable<Pair<Integer, Integer>> pairs = this.lazyIterable.zipWithIndex();
Assert.assertEquals(
this.lazyIterable.toSet(), pairs.collect(Functions.<Integer>firstOfPair()).toSet());
Assert.assertEquals(
Interval.zeroTo(this.lazyIterable.size() - 1).toSet(),
pairs.collect(Functions.<Integer>secondOfPair(), UnifiedSet.<Integer>newSet()));
Assert.assertEquals(
this.lazyIterable.zipWithIndex().toSet(),
this.lazyIterable.zipWithIndex(UnifiedSet.<Pair<Integer, Integer>>newSet()));
}
@Test
public void toMap() {
MutableMap<String, String> map =
this.newBag().toMap(Functions.<String>getPassThru(), Functions.<String>getPassThru());
for (int i = 1; i <= this.numKeys(); i++) {
String key = String.valueOf(i);
Assert.assertTrue(map.containsKey(key));
Assert.assertEquals(key, map.get(key));
}
String missingKey = "0";
Assert.assertFalse(map.containsKey(missingKey));
Assert.assertNull(map.get(missingKey));
}
@Test
public void collectIfOver100() {
ArrayList<Integer> list = new ArrayList<Integer>(Interval.oneTo(101));
ArrayList<Class<?>> result =
ArrayListIterate.collectIf(list, Predicates.equal(101), Functions.getToClass());
Assert.assertEquals(FastList.newListWith(Integer.class), result);
}
@Test
public void defaultValue() {
CaseFunction<Foo, String> function =
Functions.caseDefault(
Functions.getFixedValue("Yow!"),
Predicates.attributeGreaterThan(Foo.TO_VALUE, 5.0D),
Functions.getFixedValue("Patience, grasshopper"));
Assert.assertEquals("Yow!", function.valueOf(new Foo("", 1.0D)));
function.setDefault(Functions.getFixedValue("Patience, young grasshopper"));
Assert.assertEquals("Patience, grasshopper", function.valueOf(new Foo("", 6.0D)));
Assert.assertEquals("Patience, young grasshopper", function.valueOf(new Foo("", 1.0D)));
Verify.assertContains("CaseFunction", function.toString());
}
@Test
public void basicCase() {
CaseFunction<Integer, Integer> function = new CaseFunction<>();
function.addCase(ignored -> true, Functions.getIntegerPassThru());
Integer fortyTwo = 42;
Assert.assertEquals(fortyTwo, function.valueOf(fortyTwo));
}
@Test
public void collect_value() {
ImmutableMap<String, Integer> map = this.newMapWithKeysValues("1", 1, "2", 2, "3", 3, "4", 4);
MutableSet<String> collect = map.collect(Functions.getToString()).toSet();
UnifiedSet<String> collectToTarget = map.collect(String::valueOf, UnifiedSet.<String>newSet());
switch (map.size()) {
case 1:
Verify.assertContainsAll(collect, "1");
Verify.assertContainsAll(collectToTarget, "1");
break;
case 2:
Verify.assertContainsAll(collect, "1", "2");
Verify.assertContainsAll(collectToTarget, "1", "2");
break;
case 3:
Verify.assertContainsAll(collect, "1", "2", "3");
Verify.assertContainsAll(collectToTarget, "1", "2", "3");
break;
case 4:
Verify.assertContainsAll(collect, "1", "2", "3", "4");
Verify.assertContainsAll(collectToTarget, "1", "2", "3", "4");
break;
default:
Verify.assertEmpty(collect);
break;
}
}
@Test
public void toSortedSetBy() {
this.unmodifiableCollection = this.newWith("2", "4", "1", "3");
MutableSortedSet<String> set =
this.unmodifiableCollection.toSortedSetBy(Functions.getStringToInteger());
Verify.assertSortedSetsEqual(TreeSortedSet.newSetWith("1", "2", "3", "4"), set);
}
@Test
public void collectOver100() {
ArrayList<Integer> list = new ArrayList<Integer>(Interval.oneTo(101));
ArrayList<Class<?>> newCollection = ArrayListIterate.collect(list, Functions.getToClass());
Verify.assertSize(101, newCollection);
Verify.assertContains(Integer.class, newCollection);
}
@Test
public void collectIf() {
ImmutableCollection<Integer> integers = this.classUnderTest();
Assert.assertEquals(
integers,
integers.collectIf(Predicates.instanceOf(Integer.class), Functions.getIntegerPassThru()));
}
@Override
@Test
public void ifPresentApply() {
Integer absentKey = this.size() + 1;
ImmutableSortedMap<Integer, String> classUnderTest = this.classUnderTest();
Assert.assertNull(classUnderTest.ifPresentApply(absentKey, Functions.<String>getPassThru()));
}
@Test
public void groupByWithOptimisedList() {
ArrayList<Integer> list = new ArrayList<Integer>(Interval.toReverseList(1, 105));
MutableMultimap<String, Integer> target = new FastListMultimap<String, Integer>();
MutableMultimap<String, Integer> result =
ArrayListIterate.groupBy(list, Functions.getToString(), target);
Assert.assertEquals(result.get("105"), FastList.newListWith(105));
}
@Test
public void collectIf() {
Assert.assertEquals(
FastList.newListWith("1", "2", "3"),
this.newWith(1, 2, 3)
.collectIf(Predicates.instanceOf(Integer.class), Functions.getToString())
.toList());
}
@Test
public void collectIfWithTarget() {
ImmutableBag<String> strings = this.newBag();
Assert.assertEquals(
strings,
strings.collectIf(
String.class::isInstance, Functions.getStringPassThru(), HashBag.<String>newBag()));
}
@Test
public void collectWith_target() {
ImmutableCollection<Integer> integers = this.classUnderTest();
MutableCollection<String> expected =
this.<String>newMutable()
.with("?")
.withAll(
integers.collect(
Functions.chain(Functions.getToString(), StringFunctions.append("!"))));
MutableCollection<String> targetCollection = this.<String>newMutable().with("?");
MutableCollection<String> actual =
integers.collectWith(
(argument1, argument2) -> argument1 + argument2, "!", targetCollection);
Assert.assertEquals(expected, actual);
Assert.assertSame(targetCollection, actual);
}
@Test
public void flatCollect() {
RichIterable<String> actual =
this.classUnderTest().flatCollect(integer -> Lists.fixedSize.of(String.valueOf(integer)));
ImmutableCollection<String> expected = this.classUnderTest().collect(Functions.getToString());
Assert.assertEquals(expected, actual);
}