Examples with Predicate java.util.function.Predicate used on opensource projects

Example 61 with Predicate

use of java.util.function.Predicate in project assertj-core by joel-costigliola.

the class IntPredicateAssert_rejects_Test method should_fail_when_predicate_accepts_some_value.

@Test
public void should_fail_when_predicate_accepts_some_value() {
    IntPredicate predicate = num -> num <= 2;
    int[] matchValues = new int[] { 1, 2, 3 };
    List<Integer> matchValuesList = IntStream.of(matchValues).boxed().collect(Collectors.toList());
    thrown.expectAssertionError(noElementsShouldMatch(matchValuesList, 1, PredicateDescription.GIVEN).create());
    assertThat(predicate).rejects(matchValues);
}

Example 62 with Predicate

use of java.util.function.Predicate in project assertj-core by joel-costigliola.

the class Iterables_assertAnyMatch_Test method should_fail_with_custom_description_if_predicate_is_met_by_no_element.

@Test
public void should_fail_with_custom_description_if_predicate_is_met_by_no_element() {
    List<String> actual = newArrayList("Luke", "Leia", "Yoda");
    Predicate<String> startsWithM = s -> s.startsWith("M");
    try {
        iterables.assertAnyMatch(info, actual, startsWithM, new PredicateDescription("custom"));
    } catch (AssertionError e) {
        verify(failures).failure(info, anyElementShouldMatch(actual, new PredicateDescription("custom")));
        return;
    }
    failBecauseExpectedAssertionErrorWasNotThrown();
}

Example 63 with Predicate

use of java.util.function.Predicate in project assertj-core by joel-costigliola.

the class SoftAssertionsPerfTest method should_be_able_to_catch_exceptions_thrown_by_all_proxied_methods.

@SuppressWarnings("unchecked")
@Test
public void should_be_able_to_catch_exceptions_thrown_by_all_proxied_methods() throws URISyntaxException {
    try {
        softly.assertThat(BigDecimal.ZERO).isEqualTo(BigDecimal.ONE);
        softly.assertThat(Boolean.FALSE).isTrue();
        softly.assertThat(false).isTrue();
        softly.assertThat(new boolean[] { false }).isEqualTo(new boolean[] { true });
        softly.assertThat(new Byte((byte) 0)).isEqualTo((byte) 1);
        softly.assertThat((byte) 2).inHexadecimal().isEqualTo((byte) 3);
        softly.assertThat(new byte[] { 4 }).isEqualTo(new byte[] { 5 });
        softly.assertThat(new Character((char) 65)).isEqualTo(new Character((char) 66));
        softly.assertThat((char) 67).isEqualTo((char) 68);
        softly.assertThat(new char[] { 69 }).isEqualTo(new char[] { 70 });
        softly.assertThat(new StringBuilder("a")).isEqualTo(new StringBuilder("b"));
        softly.assertThat(Object.class).isEqualTo(String.class);
        softly.assertThat(parseDatetime("1999-12-31T23:59:59")).isEqualTo(parseDatetime("2000-01-01T00:00:01"));
        softly.assertThat(new Double(6.0d)).isEqualTo(new Double(7.0d));
        softly.assertThat(8.0d).isEqualTo(9.0d);
        softly.assertThat(new double[] { 10.0d }).isEqualTo(new double[] { 11.0d });
        softly.assertThat(new File("a")).overridingErrorMessage("expected:<File(b)> but was:<File(a)>").isEqualTo(new File("b"));
        softly.assertThat(new Float(12f)).isEqualTo(new Float(13f));
        softly.assertThat(14f).isEqualTo(15f);
        softly.assertThat(new float[] { 16f }).isEqualTo(new float[] { 17f });
        softly.assertThat(new ByteArrayInputStream(new byte[] { (byte) 65 })).hasSameContentAs(new ByteArrayInputStream(new byte[] { (byte) 66 }));
        softly.assertThat(new Integer(20)).isEqualTo(new Integer(21));
        softly.assertThat(22).isEqualTo(23);
        softly.assertThat(new int[] { 24 }).isEqualTo(new int[] { 25 });
        softly.assertThat((Iterable<String>) Lists.newArrayList("26")).isEqualTo(Lists.newArrayList("27"));
        softly.assertThat(Lists.newArrayList("28").iterator()).contains("29");
        softly.assertThat(Lists.newArrayList("30")).isEqualTo(Lists.newArrayList("31"));
        softly.assertThat(new Long(32L)).isEqualTo(new Long(33L));
        softly.assertThat(34L).isEqualTo(35L);
        softly.assertThat(new long[] { 36L }).isEqualTo(new long[] { 37L });
        softly.assertThat(mapOf(MapEntry.entry("38", "39"))).isEqualTo(mapOf(MapEntry.entry("40", "41")));
        softly.assertThat(new Short((short) 42)).isEqualTo(new Short((short) 43));
        softly.assertThat((short) 44).isEqualTo((short) 45);
        softly.assertThat(new short[] { (short) 46 }).isEqualTo(new short[] { (short) 47 });
        softly.assertThat("48").isEqualTo("49");
        softly.assertThat(new Object() {

            @Override
            public String toString() {
                return "50";
            }
        }).isEqualTo(new Object() {

            @Override
            public String toString() {
                return "51";
            }
        });
        softly.assertThat(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.assertThat(illegalArgumentException).hasMessage("NullPointerException message");
        softly.assertThatThrownBy(new ThrowingCallable() {

            @Override
            public void call() throws Exception {
                throw new Exception("something was wrong");
            }
        }).hasMessage("something was good");
        softly.assertThat(mapOf(MapEntry.entry("54", "55"))).contains(MapEntry.entry("1", "2"));
        softly.assertThat(LocalTime.of(12, 00)).isEqualTo(LocalTime.of(13, 00));
        softly.assertThat(OffsetTime.of(12, 0, 0, 0, ZoneOffset.UTC)).isEqualTo(OffsetTime.of(13, 0, 0, 0, ZoneOffset.UTC));
        softly.assertThat(Optional.of("not empty")).isEqualTo("empty");
        softly.assertThat(OptionalInt.of(0)).isEqualTo(1);
        softly.assertThat(OptionalDouble.of(0.0)).isEqualTo(1.0);
        softly.assertThat(OptionalLong.of(0L)).isEqualTo(1L);
        softly.assertThat(new URI("http://assertj.org")).hasPort(8888);
        softly.assertThat(CompletableFuture.completedFuture("done")).hasFailed();
        softly.assertThat((Predicate<String>) s -> s.equals("something")).accepts("something else");
        softly.assertThat((IntPredicate) s -> s == 1).accepts(2);
        softly.assertThat((LongPredicate) s -> s == 1).accepts(2);
        softly.assertThat((DoublePredicate) s -> s == 1).accepts(2);
        softly.assertAll();
        fail("Should not reach here");
    } catch (SoftAssertionError e) {
        List<String> errors = e.getErrors();
        assertThat(errors).hasSize(52);
        assertThat(errors.get(0)).startsWith("expected:<[1]> but was:<[0]>");
        assertThat(errors.get(1)).startsWith("expected:<[tru]e> but was:<[fals]e>");
        assertThat(errors.get(2)).startsWith("expected:<[tru]e> but was:<[fals]e>");
        assertThat(errors.get(3)).startsWith("expected:<[[tru]e]> but was:<[[fals]e]>");
        assertThat(errors.get(4)).startsWith("expected:<[1]> but was:<[0]>");
        assertThat(errors.get(5)).startsWith("expected:<0x0[3]> but was:<0x0[2]>");
        assertThat(errors.get(6)).startsWith("expected:<[[5]]> but was:<[[4]]>");
        assertThat(errors.get(7)).startsWith("expected:<'[B]'> but was:<'[A]'>");
        assertThat(errors.get(8)).startsWith("expected:<'[D]'> but was:<'[C]'>");
        assertThat(errors.get(9)).startsWith("expected:<['[F]']> but was:<['[E]']>");
        assertThat(errors.get(10)).startsWith("expected:<[b]> but was:<[a]>");
        assertThat(errors.get(11)).startsWith("expected:<java.lang.[String]> but was:<java.lang.[Object]>");
        assertThat(errors.get(12)).startsWith("expected:<[2000-01-01T00:00:01].000> but was:<[1999-12-31T23:59:59].000>");
        assertThat(errors.get(13)).startsWith("expected:<[7].0> but was:<[6].0>");
        assertThat(errors.get(14)).startsWith("expected:<[9].0> but was:<[8].0>");
        assertThat(errors.get(15)).startsWith("expected:<[1[1].0]> but was:<[1[0].0]>");
        assertThat(errors.get(16)).startsWith("expected:<File(b)> but was:<File(a)>");
        assertThat(errors.get(17)).startsWith("expected:<1[3].0f> but was:<1[2].0f>");
        assertThat(errors.get(18)).startsWith("expected:<1[5].0f> but was:<1[4].0f>");
        assertThat(errors.get(19)).startsWith("expected:<[1[7].0f]> but was:<[1[6].0f]>");
        assertThat(errors.get(20)).startsWith(format("%nInputStreams do not have same content:%n%n" + "Changed content at line 1:%n" + "expecting:%n" + "  [\"B\"]%n" + "but was:%n" + "  [\"A\"]%n"));
        assertThat(errors.get(21)).startsWith("expected:<2[1]> but was:<2[0]>");
        assertThat(errors.get(22)).startsWith("expected:<2[3]> but was:<2[2]>");
        assertThat(errors.get(23)).startsWith("expected:<[2[5]]> but was:<[2[4]]>");
        assertThat(errors.get(24)).startsWith("expected:<[\"2[7]\"]> but was:<[\"2[6]\"]>");
        assertThat(errors.get(25)).startsWith(format("%nExpecting:%n" + " <[\"28\"]>%n" + "to contain:%n" + " <[\"29\"]>%n" + "but could not find:%n" + " <[\"29\"]>%n"));
        assertThat(errors.get(26)).startsWith("expected:<[\"3[1]\"]> but was:<[\"3[0]\"]>");
        assertThat(errors.get(27)).startsWith("expected:<3[3]L> but was:<3[2]L>");
        assertThat(errors.get(28)).startsWith("expected:<3[5]L> but was:<3[4]L>");
        assertThat(errors.get(29)).startsWith("expected:<[3[7]L]> but was:<[3[6]L]>");
        assertThat(errors.get(30)).startsWith("expected:<{\"[40\"=\"41]\"}> but was:<{\"[38\"=\"39]\"}>");
        assertThat(errors.get(31)).startsWith("expected:<4[3]> but was:<4[2]>");
        assertThat(errors.get(32)).startsWith("expected:<4[5]> but was:<4[4]>");
        assertThat(errors.get(33)).startsWith("expected:<[4[7]]> but was:<[4[6]]>");
        assertThat(errors.get(34)).startsWith("expected:<\"4[9]\"> but was:<\"4[8]\">");
        assertThat(errors.get(35)).startsWith("expected:<5[1]> but was:<5[0]>");
        assertThat(errors.get(36)).startsWith("expected:<[5[3]]> but was:<[5[2]]>");
        assertThat(errors.get(37)).startsWith(format("%nExpecting message:%n" + " <\"NullPointerException message\">%n" + "but was:%n" + " <\"IllegalArgumentException message\">"));
        assertThat(errors.get(38)).startsWith(format("%nExpecting message:%n" + " <\"something was good\">%n" + "but was:%n" + " <\"something was wrong\">"));
        assertThat(errors.get(39)).startsWith(format("%nExpecting:%n" + " <{\"54\"=\"55\"}>%n" + "to contain:%n" + " <[MapEntry[key=\"1\", value=\"2\"]]>%n" + "but could not find:%n" + " <[MapEntry[key=\"1\", value=\"2\"]]>%n"));
        assertThat(errors.get(40)).startsWith("expected:<1[3]:00> but was:<1[2]:00>");
        assertThat(errors.get(41)).startsWith("expected:<1[3]:00Z> but was:<1[2]:00Z>");
        assertThat(errors.get(42)).startsWith("expected:<[\"empty\"]> but was:<[Optional[not empty]]>");
        assertThat(errors.get(43)).startsWith("expected:<[1]> but was:<[OptionalInt[0]]>");
        assertThat(errors.get(44)).startsWith("expected:<[1.0]> but was:<[OptionalDouble[0.0]]>");
        assertThat(errors.get(45)).startsWith("expected:<[1L]> but was:<[OptionalLong[0]]>");
        assertThat(errors.get(46)).contains("Expecting port of");
        assertThat(errors.get(47)).contains("to have failed");
        assertThat(errors.get(48)).startsWith(format("%nExpecting:%n  <given predicate>%n" + "to accept <\"something else\"> but it did not."));
        assertThat(errors.get(49)).startsWith(format("%nExpecting:%n  <given predicate>%n" + "to accept <2> but it did not."));
        assertThat(errors.get(50)).startsWith(format("%nExpecting:%n  <given predicate>%n" + "to accept <2L> but it did not."));
        assertThat(errors.get(51)).startsWith(format("%nExpecting:%n  <given predicate>%n" + "to accept <2.0> but it did not."));
    }
}

Example 64 with Predicate

use of java.util.function.Predicate in project assertj-core by joel-costigliola.

the class BDDSoftAssertionsTest method should_be_able_to_catch_exceptions_thrown_by_all_proxied_methods.

@SuppressWarnings("unchecked")
@Test
public void should_be_able_to_catch_exceptions_thrown_by_all_proxied_methods() throws URISyntaxException {
    try {
        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(mapOf(MapEntry.entry("38", "39"))).isEqualTo(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.thenThrownBy(new ThrowingCallable() {

            @Override
            public void call() throws Exception {
                throw new Exception("something was wrong");
            }
        }).hasMessage("something was good");
        softly.then(mapOf(MapEntry.entry("54", "55"))).contains(MapEntry.entry("1", "2"));
        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(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(new URI("http://assertj.org")).hasPort(8888);
        softly.then(CompletableFuture.completedFuture("done")).hasFailed();
        softly.then((Predicate<String>) s -> s.equals("something")).accepts("something else");
        softly.then((IntPredicate) s -> s == 1).accepts(2);
        softly.then((LongPredicate) s -> s == 1).accepts(2);
        softly.then((DoublePredicate) s -> s == 1).accepts(2);
        softly.assertAll();
        fail("Should not reach here");
    } catch (SoftAssertionError e) {
        List<String> errors = e.getErrors();
        assertThat(errors).hasSize(52);
        assertThat(errors.get(0)).startsWith("expected:<[1]> but was:<[0]>");
        assertThat(errors.get(1)).startsWith("expected:<[tru]e> but was:<[fals]e>");
        assertThat(errors.get(2)).startsWith("expected:<[tru]e> but was:<[fals]e>");
        assertThat(errors.get(3)).startsWith("expected:<[[tru]e]> but was:<[[fals]e]>");
        assertThat(errors.get(4)).startsWith("expected:<[1]> but was:<[0]>");
        assertThat(errors.get(5)).startsWith("expected:<0x0[3]> but was:<0x0[2]>");
        assertThat(errors.get(6)).startsWith("expected:<[[5]]> but was:<[[4]]>");
        assertThat(errors.get(7)).startsWith("expected:<'[B]'> but was:<'[A]'>");
        assertThat(errors.get(8)).startsWith("expected:<'[D]'> but was:<'[C]'>");
        assertThat(errors.get(9)).startsWith("expected:<['[F]']> but was:<['[E]']>");
        assertThat(errors.get(10)).startsWith("expected:<[b]> but was:<[a]>");
        assertThat(errors.get(11)).startsWith("expected:<java.lang.[String]> but was:<java.lang.[Object]>");
        assertThat(errors.get(12)).startsWith("expected:<[2000-01-01T00:00:01].000> but was:<[1999-12-31T23:59:59].000>");
        assertThat(errors.get(13)).startsWith("expected:<[7].0> but was:<[6].0>");
        assertThat(errors.get(14)).startsWith("expected:<[9].0> but was:<[8].0>");
        assertThat(errors.get(15)).startsWith("expected:<[1[1].0]> but was:<[1[0].0]>");
        assertThat(errors.get(16)).startsWith("expected:<File(b)> but was:<File(a)>");
        assertThat(errors.get(17)).startsWith("expected:<1[3].0f> but was:<1[2].0f>");
        assertThat(errors.get(18)).startsWith("expected:<1[5].0f> but was:<1[4].0f>");
        assertThat(errors.get(19)).startsWith("expected:<[1[7].0f]> but was:<[1[6].0f]>");
        assertThat(errors.get(20)).startsWith(format("%nInputStreams do not have same content:%n%n" + "Changed content at line 1:%n" + "expecting:%n" + "  [\"B\"]%n" + "but was:%n" + "  [\"A\"]%n"));
        assertThat(errors.get(21)).startsWith("expected:<2[1]> but was:<2[0]>");
        assertThat(errors.get(22)).startsWith("expected:<2[3]> but was:<2[2]>");
        assertThat(errors.get(23)).startsWith("expected:<[2[5]]> but was:<[2[4]]>");
        assertThat(errors.get(24)).startsWith("expected:<[\"2[7]\"]> but was:<[\"2[6]\"]>");
        assertThat(errors.get(25)).startsWith(format("%nExpecting:%n" + " <[\"28\"]>%n" + "to contain:%n" + " <[\"29\"]>%n" + "but could not find:%n" + " <[\"29\"]>%n"));
        assertThat(errors.get(26)).startsWith("expected:<[\"3[1]\"]> but was:<[\"3[0]\"]>");
        assertThat(errors.get(27)).startsWith("expected:<3[3]L> but was:<3[2]L>");
        assertThat(errors.get(28)).startsWith("expected:<3[5]L> but was:<3[4]L>");
        assertThat(errors.get(29)).startsWith("expected:<[3[7]L]> but was:<[3[6]L]>");
        assertThat(errors.get(30)).startsWith("expected:<{\"[40\"=\"41]\"}> but was:<{\"[38\"=\"39]\"}>");
        assertThat(errors.get(31)).startsWith("expected:<4[3]> but was:<4[2]>");
        assertThat(errors.get(32)).startsWith("expected:<4[5]> but was:<4[4]>");
        assertThat(errors.get(33)).startsWith("expected:<[4[7]]> but was:<[4[6]]>");
        assertThat(errors.get(34)).startsWith("expected:<\"4[9]\"> but was:<\"4[8]\">");
        assertThat(errors.get(35)).startsWith("expected:<5[1]> but was:<5[0]>");
        assertThat(errors.get(36)).startsWith("expected:<[5[3]]> but was:<[5[2]]>");
        assertThat(errors.get(37)).startsWith(format("%nExpecting message:%n" + " <\"NullPointerException message\">%n" + "but was:%n" + " <\"IllegalArgumentException message\">"));
        assertThat(errors.get(38)).startsWith(format("%nExpecting message:%n" + " <\"something was good\">%n" + "but was:%n" + " <\"something was wrong\">"));
        assertThat(errors.get(39)).startsWith(format("%nExpecting:%n" + " <{\"54\"=\"55\"}>%n" + "to contain:%n" + " <[MapEntry[key=\"1\", value=\"2\"]]>%n" + "but could not find:%n" + " <[MapEntry[key=\"1\", value=\"2\"]]>%n"));
        assertThat(errors.get(40)).startsWith("expected:<1[3]:00> but was:<1[2]:00>");
        assertThat(errors.get(41)).startsWith("expected:<1[3]:00Z> but was:<1[2]:00Z>");
        assertThat(errors.get(42)).startsWith("expected:<[\"empty\"]> but was:<[Optional[not empty]]>");
        assertThat(errors.get(43)).startsWith("expected:<[1]> but was:<[OptionalInt[0]]>");
        assertThat(errors.get(44)).startsWith("expected:<[1.0]> but was:<[OptionalDouble[0.0]]>");
        assertThat(errors.get(45)).startsWith("expected:<[1L]> but was:<[OptionalLong[0]]>");
        assertThat(errors.get(46)).contains("Expecting port of");
        assertThat(errors.get(47)).contains("to have failed");
        assertThat(errors.get(48)).startsWith(format("%nExpecting:%n  <given predicate>%n" + "to accept <\"something else\"> but it did not."));
        assertThat(errors.get(49)).startsWith(format("%nExpecting:%n  <given predicate>%n" + "to accept <2> but it did not."));
        assertThat(errors.get(50)).startsWith(format("%nExpecting:%n  <given predicate>%n" + "to accept <2L> but it did not."));
        assertThat(errors.get(51)).startsWith(format("%nExpecting:%n  <given predicate>%n" + "to accept <2.0> but it did not."));
    }
}

Example 65 with Predicate

use of java.util.function.Predicate in project assertj-core by joel-costigliola.

the class WithAssertions_delegation_Test method withAssertions_assertThat_intPredicate_Test.

@Test
public void withAssertions_assertThat_intPredicate_Test() {
    IntPredicate predicate = i -> i == 0;
    assertThat(predicate).accepts(0);
}