@Override
public OptionalInt findAny() {
Integer result =
performOperation(
TerminalFunctions.findAnyIntFunction(),
false,
(i1, i2) -> {
if (i1 != null) {
return i1;
} else {
return i2;
}
},
a -> a != null);
if (result != null) {
return OptionalInt.of(result);
} else {
return OptionalInt.empty();
}
}
@Override
public OptionalInt max() {
Integer value =
performOperation(
TerminalFunctions.maxIntFunction(),
false,
(i1, i2) -> {
if (i1 != null) {
if (i2 != null) {
return i1 > i2 ? i1 : i2;
}
return i1;
}
return i2;
},
null);
if (value == null) {
return OptionalInt.empty();
} else {
return OptionalInt.of(value);
}
}
@Override
public OptionalInt reduce(IntBinaryOperator op) {
Integer result =
performOperation(
TerminalFunctions.reduceFunction(op),
true,
(i1, i2) -> {
if (i1 != null) {
if (i2 != null) {
return op.applyAsInt(i1, i2);
}
return i1;
}
return i2;
},
null);
if (result == null) {
return OptionalInt.empty();
} else {
return OptionalInt.of(result);
}
}
public static void main(String... args) {
List<Integer> numbers = Arrays.asList(3, 4, 5, 1, 2);
Arrays.stream(numbers.toArray()).forEach(System.out::println);
int calories = Dish.menu.stream().mapToInt(Dish::getCalories).sum();
System.out.println("Number of calories:" + calories);
// max and OptionalInt
OptionalInt maxCalories = Dish.menu.stream().mapToInt(Dish::getCalories).max();
int max;
if (maxCalories.isPresent()) {
max = maxCalories.getAsInt();
} else {
// we can choose a default value
max = 1;
}
System.out.println(max);
// numeric ranges
IntStream evenNumbers = IntStream.rangeClosed(1, 100).filter(n -> n % 2 == 0);
System.out.println(evenNumbers.count());
Stream<int[]> pythagoreanTriples =
IntStream.rangeClosed(1, 100)
.boxed()
.flatMap(
a ->
IntStream.rangeClosed(a, 100)
.filter(b -> Math.sqrt(a * a + b * b) % 1 == 0)
.boxed()
.map(b -> new int[] {a, b, (int) Math.sqrt(a * a + b * b)}));
pythagoreanTriples.forEach(t -> System.out.println(t[0] + ", " + t[1] + ", " + t[2]));
}
@Test
public void should_be_able_to_catch_exceptions_thrown_by_all_proxied_methods() {
try (AutoCloseableBDDSoftAssertions softly = new AutoCloseableBDDSoftAssertions()) {
softly.then(BigDecimal.ZERO).isEqualTo(BigDecimal.ONE);
softly.then(Boolean.FALSE).isTrue();
softly.then(false).isTrue();
softly.then(new boolean[] {false}).isEqualTo(new boolean[] {true});
softly.then(new Byte((byte) 0)).isEqualTo((byte) 1);
softly.then((byte) 2).inHexadecimal().isEqualTo((byte) 3);
softly.then(new byte[] {4}).isEqualTo(new byte[] {5});
softly.then(new Character((char) 65)).isEqualTo(new Character((char) 66));
softly.then((char) 67).isEqualTo((char) 68);
softly.then(new char[] {69}).isEqualTo(new char[] {70});
softly.then(new StringBuilder("a")).isEqualTo(new StringBuilder("b"));
softly.then(Object.class).isEqualTo(String.class);
softly
.then(parseDatetime("1999-12-31T23:59:59"))
.isEqualTo(parseDatetime("2000-01-01T00:00:01"));
softly.then(new Double(6.0d)).isEqualTo(new Double(7.0d));
softly.then(8.0d).isEqualTo(9.0d);
softly.then(new double[] {10.0d}).isEqualTo(new double[] {11.0d});
softly
.then(new File("a"))
.overridingErrorMessage("expected:<File(b)> but was:<File(a)>")
.isEqualTo(new File("b"));
softly.then(new Float(12f)).isEqualTo(new Float(13f));
softly.then(14f).isEqualTo(15f);
softly.then(new float[] {16f}).isEqualTo(new float[] {17f});
softly
.then(new ByteArrayInputStream(new byte[] {(byte) 65}))
.hasSameContentAs(new ByteArrayInputStream(new byte[] {(byte) 66}));
softly.then(new Integer(20)).isEqualTo(new Integer(21));
softly.then(22).isEqualTo(23);
softly.then(new int[] {24}).isEqualTo(new int[] {25});
softly.then((Iterable<String>) Lists.newArrayList("26")).isEqualTo(Lists.newArrayList("27"));
softly.then(Lists.newArrayList("28").iterator()).contains("29");
softly.then(Lists.newArrayList("30")).isEqualTo(Lists.newArrayList("31"));
softly.then(new Long(32L)).isEqualTo(new Long(33L));
softly.then(34L).isEqualTo(35L);
softly.then(new long[] {36L}).isEqualTo(new long[] {37L});
softly
.then(Maps.mapOf(MapEntry.entry("38", "39")))
.isEqualTo(Maps.mapOf(MapEntry.entry("40", "41")));
softly.then(new Short((short) 42)).isEqualTo(new Short((short) 43));
softly.then((short) 44).isEqualTo((short) 45);
softly.then(new short[] {(short) 46}).isEqualTo(new short[] {(short) 47});
softly.then("48").isEqualTo("49");
softly
.then(
new Object() {
@Override
public String toString() {
return "50";
}
})
.isEqualTo(
new Object() {
@Override
public String toString() {
return "51";
}
});
softly
.then(
new Object[] {
new Object() {
@Override
public String toString() {
return "52";
}
}
})
.isEqualTo(
new Object[] {
new Object() {
@Override
public String toString() {
return "53";
}
}
});
final IllegalArgumentException illegalArgumentException =
new IllegalArgumentException("IllegalArgumentException message");
softly.then(illegalArgumentException).hasMessage("NullPointerException message");
softly.then(Optional.of("not empty")).isEqualTo("empty");
softly.then(OptionalInt.of(0)).isEqualTo(1);
softly.then(OptionalDouble.of(0.0)).isEqualTo(1.0);
softly.then(OptionalLong.of(0L)).isEqualTo(1L);
softly.then(LocalTime.of(12, 00)).isEqualTo(LocalTime.of(13, 00));
softly
.then(OffsetTime.of(12, 0, 0, 0, ZoneOffset.UTC))
.isEqualTo(OffsetTime.of(13, 0, 0, 0, ZoneOffset.UTC));
softly.then(OffsetDateTime.MIN).isEqualTo(OffsetDateTime.MAX);
} catch (SoftAssertionError e) {
List<String> errors = e.getErrors();
assertThat(errors).hasSize(45);
assertThat(errors.get(0)).isEqualTo("expected:<[1]> but was:<[0]>");
assertThat(errors.get(1)).isEqualTo("expected:<[tru]e> but was:<[fals]e>");
assertThat(errors.get(2)).isEqualTo("expected:<[tru]e> but was:<[fals]e>");
assertThat(errors.get(3)).isEqualTo("expected:<[[tru]e]> but was:<[[fals]e]>");
assertThat(errors.get(4)).isEqualTo("expected:<[1]> but was:<[0]>");
assertThat(errors.get(5)).isEqualTo("expected:<0x0[3]> but was:<0x0[2]>");
assertThat(errors.get(6)).isEqualTo("expected:<[[5]]> but was:<[[4]]>");
assertThat(errors.get(7)).isEqualTo("expected:<'[B]'> but was:<'[A]'>");
assertThat(errors.get(8)).isEqualTo("expected:<'[D]'> but was:<'[C]'>");
assertThat(errors.get(9)).isEqualTo("expected:<['[F]']> but was:<['[E]']>");
assertThat(errors.get(10)).isEqualTo("expected:<[b]> but was:<[a]>");
assertThat(errors.get(11))
.isEqualTo("expected:<java.lang.[String]> but was:<java.lang.[Object]>");
assertThat(errors.get(12))
.isEqualTo("expected:<[2000-01-01T00:00:01].000> but was:<[1999-12-31T23:59:59].000>");
assertThat(errors.get(13)).isEqualTo("expected:<[7].0> but was:<[6].0>");
assertThat(errors.get(14)).isEqualTo("expected:<[9].0> but was:<[8].0>");
assertThat(errors.get(15)).isEqualTo("expected:<[1[1].0]> but was:<[1[0].0]>");
assertThat(errors.get(16)).isEqualTo("expected:<File(b)> but was:<File(a)>");
assertThat(errors.get(17)).isEqualTo("expected:<1[3].0f> but was:<1[2].0f>");
assertThat(errors.get(18)).isEqualTo("expected:<1[5].0f> but was:<1[4].0f>");
assertThat(errors.get(19)).isEqualTo("expected:<[1[7].0f]> but was:<[1[6].0f]>");
assertThat(errors.get(20))
.isEqualTo(
String.format(
"%nInputStreams do not have same content:"
+ System.getProperty("line.separator")
+ "line:<1>, expected:<B> but was:<A>"));
assertThat(errors.get(21)).isEqualTo("expected:<2[1]> but was:<2[0]>");
assertThat(errors.get(22)).isEqualTo("expected:<2[3]> but was:<2[2]>");
assertThat(errors.get(23)).isEqualTo("expected:<[2[5]]> but was:<[2[4]]>");
assertThat(errors.get(24)).isEqualTo("expected:<[\"2[7]\"]> but was:<[\"2[6]\"]>");
assertThat(errors.get(25))
.isEqualTo(
String.format(
"%nExpecting:%n"
+ " <[\"28\"]>%n"
+ "to contain:%n"
+ " <[\"29\"]>%n"
+ "but could not find:%n"
+ " <[\"29\"]>%n"));
assertThat(errors.get(26)).isEqualTo("expected:<[\"3[1]\"]> but was:<[\"3[0]\"]>");
assertThat(errors.get(27)).isEqualTo("expected:<3[3]L> but was:<3[2]L>");
assertThat(errors.get(28)).isEqualTo("expected:<3[5]L> but was:<3[4]L>");
assertThat(errors.get(29)).isEqualTo("expected:<[3[7]L]> but was:<[3[6]L]>");
assertThat(errors.get(30))
.isEqualTo("expected:<{\"[40\"=\"41]\"}> but was:<{\"[38\"=\"39]\"}>");
assertThat(errors.get(31)).isEqualTo("expected:<4[3]> but was:<4[2]>");
assertThat(errors.get(32)).isEqualTo("expected:<4[5]> but was:<4[4]>");
assertThat(errors.get(33)).isEqualTo("expected:<[4[7]]> but was:<[4[6]]>");
assertThat(errors.get(34)).isEqualTo("expected:<\"4[9]\"> but was:<\"4[8]\">");
assertThat(errors.get(35)).isEqualTo("expected:<5[1]> but was:<5[0]>");
assertThat(errors.get(36)).isEqualTo("expected:<[5[3]]> but was:<[5[2]]>");
assertThat(errors.get(37))
.isEqualTo(
String.format(
"%nExpecting message:%n"
+ " <\"NullPointerException message\">%n"
+ "but was:%n"
+ " <\"IllegalArgumentException message\">"));
assertThat(errors.get(38))
.isEqualTo("expected:<[\"empty\"]> but was:<[Optional[not empty]]>");
assertThat(errors.get(39)).isEqualTo("expected:<[1]> but was:<[OptionalInt[0]]>");
assertThat(errors.get(40)).isEqualTo("expected:<[1.0]> but was:<[OptionalDouble[0.0]]>");
assertThat(errors.get(41)).isEqualTo("expected:<[1L]> but was:<[OptionalLong[0]]>");
assertThat(errors.get(42)).isEqualTo("expected:<1[3]:00> but was:<1[2]:00>");
assertThat(errors.get(43)).isEqualTo("expected:<1[3]:00Z> but was:<1[2]:00Z>");
assertThat(errors.get(44))
.isEqualTo(
"expected:<[+999999999-12-31T23:59:59.999999999-]18:00> but was:<[-999999999-01-01T00:00+]18:00>");
return;
}
fail("Should not reach here");
}