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How to use OptionalAssert method of org.assertj.core.api.OptionalAssert class

Best Assertj code snippet using org.assertj.core.api.OptionalAssert.OptionalAssert

Source:OptionalAssertionsExamples.java

...30 * {@link Optional} assertions example.31 *32 * @author Joel Costigliola33 */34public class OptionalAssertionsExamples extends AbstractAssertionsExamples {35  @Test36  public void optional_assertions_examples() {37    Optional<String> optional = Optional.of("Test");38    assertThat(optional).isPresent()39                        .containsInstanceOf(String.class)40                        .contains("Test");41    Optional<Object> emptyOptional = Optional.empty();42    assertThat(emptyOptional).isEmpty();43    String someString = "something";44    assertThat(Optional.of(someString)).containsSame(someString);45    assertThat(Optional.of(someString)).hasValueSatisfying(s -> {46      assertThat(s).isEqualTo("something");47      assertThat(s).startsWith("some");48      assertThat(s).endsWith("thing");49    });50    Condition<TolkienCharacter> isAnElf = new Condition<>(character -> character.getRace() == Race.ELF, "an elf");51    assertThat(Optional.of(legolas)).hasValueSatisfying(isAnElf);52    assertThat(Optional.of(legolas)).satisfiesAnyOf(tc -> then(tc).isEmpty(), tc -> then(tc.get().getRace()).isEqualTo(Race.ELF));53    assertThat(Optional.empty()).satisfiesAnyOf(tc -> then(tc).isEmpty(), tc -> then(true).isFalse());54    // log some error messages to have a look at them55    try {56      assertThat(emptyOptional).isPresent();57    } catch (AssertionError e) {58      logAssertionErrorMessage("OptionalAssert.isPresent", e);59    }60    try {61      assertThat(emptyOptional).contains("Test");62    } catch (AssertionError e) {63      logAssertionErrorMessage("OptionalAssert.contains", e);64    }65    try {66      assertThat(optional).contains("Foo");67    } catch (AssertionError e) {68      logAssertionErrorMessage("OptionalAssert.contains", e);69    }70    try {71      assertThat(optional).isEmpty();72    } catch (AssertionError e) {73      logAssertionErrorMessage("OptionalAssert.isEmpty", e);74    }75    try {76      assertThat(optional).hasValueSatisfying(s -> {77        assertThat(s).isEqualTo("Not Test");78      });79    } catch (AssertionError e) {80      logAssertionErrorMessage("OptionalAssert.containing", e);81    }82    try {83      assertThat(emptyOptional).hasValueSatisfying(o -> {});84    } catch (AssertionError e) {85      logAssertionErrorMessage("OptionalAssert.containing", e);86    }87  }88  @Test89  public void primitives_optional_assertions_examples() {90    OptionalInt optional = OptionalInt.of(12);91    assertThat(optional).isPresent()92                        .hasValue(12);93    OptionalDouble emptyOptional = OptionalDouble.empty();94    assertThat(emptyOptional).isEmpty();95  }96  @Test97  public void optional_comparator_assertions_examples() {98    Optional<String> optional = Optional.of("YODA");99    assertThat(optional).usingValueComparator(caseInsensitiveStringComparator)100                        .hasValue("yoda")101                        .contains("yoda");102  }103  @Test104  public void map_optional_assertion_example() {105    Optional<String> optional = Optional.of("YODA");106    assertThat(optional).map(String::length)107                        .hasValue(4);108  }109  @Test110  public void hasValueSatisfying_with_condition_assertion_example() {111    assertThat(Optional.of("Yoda")).hasValueSatisfying(JEDI);112    Condition<TolkienCharacter> isAnElf = new Condition<>(character -> character.getRace() == ELF, "an elf");113    TolkienCharacter legolas = new TolkienCharacter("Legolas", 1000, ELF);114    TolkienCharacter frodo = new TolkienCharacter("Frodo", 33, HOBBIT);115    // assertion succeeds116    assertThat(Optional.of(legolas)).hasValueSatisfying(isAnElf);117    try {118      assertThat(Optional.of(frodo)).hasValueSatisfying(isAnElf);119    } catch (AssertionError e) {120      logAssertionErrorMessage("OptionalAssert.hasValueSatisfying with condition", e);121    }122  }123  @Test124  public void flatMap_optional_assertion_example() {125    Function<String, Optional<String>> UPPER_CASE_OPTIONAL_STRING = s -> s == null ? Optional.empty()126        : Optional.of(s.toUpperCase());127    // assertions succeed128    assertThat(Optional.of("something")).contains("something")129                                        .flatMap(UPPER_CASE_OPTIONAL_STRING)130                                        .contains("SOMETHING");131    assertThat(Optional.<String> empty()).flatMap(UPPER_CASE_OPTIONAL_STRING)132                                         .isEmpty();133    assertThat(Optional.<String> ofNullable(null)).flatMap(UPPER_CASE_OPTIONAL_STRING)134                                                  .isEmpty();...

Source:TestHelper.java

...14package jp.root42.indolently;15import java.util.Optional;16import jp.root42.indolently.ref.$;17import org.assertj.core.api.Assertions;18import org.assertj.core.api.OptionalAssert;19/**20 * @author root42 Inc.21 * @version $22 */23@SuppressWarnings("OptionalUsedAsFieldOrParameterType")24public final class TestHelper {25    private TestHelper() {}26    public static <VALUE> OptionalAssert<VALUE> assertThat(final Optional<VALUE> actual) {27        return Assertions.assertThat(actual);28    }29    public static <VALUE> OptionalAssert<VALUE> assertThat(final $<VALUE> actual) { return assertThat$(actual); }30    public static <VALUE> OptionalAssert<VALUE> assertThat$(final $<VALUE> actual) {31        return new OptionalAssert<>(actual.opt) {32            @SuppressWarnings("rawtypes")33            @Override34            public OptionalAssert<VALUE> isEqualTo(final Object expected) {35                if (expected instanceof $) {36                    this.objects.assertEqual(this.info, this.actual, (($) expected).opt);37                } else {38                    this.objects.assertEqual(this.info, this.actual, expected);39                }40                return this.myself;41            }42            @SuppressWarnings("rawtypes")43            @Override44            public OptionalAssert<VALUE> isNotEqualTo(final Object other) {45                if (other instanceof $) {46                    this.objects.assertNotEqual(this.info, this.actual, (($) other).opt);47                } else {48                    this.objects.assertNotEqual(this.info, this.actual, other);49                }50                return this.myself;51            }52        };53    }54}...

OptionalAssert

Using AI Code Generation

1package org.example;2import java.util.Optional;3import org.assertj.core.api.Assertions;4public class App {5    public static void main(String[] args) {6        Optional<String> optional = Optional.of("a");7        Assertions.assertThat(optional).isPresent();8    }9}10OpenJDK Runtime Environment (build 11.0.2+9)11OpenJDK 64-Bit Server VM (build 11.0.2+9, mixed mode)

OptionalAssert

Using AI Code Generation

1import java.util.Optional;2import org.assertj.core.api.OptionalAssert;3public class OptionalAssertTest {4	public static void main(String[] args) {5		Optional<String> optional = Optional.of("test");6		OptionalAssert.assertThat(optional).hasValue("test");7	}8}9	at org.assertj.core.api.OptionalAssert.hasValue(OptionalAssert.java:75)10	at OptionalAssertTest.main(OptionalAssertTest.java:11)

OptionalAssert

Using AI Code Generation

1import java.util.Optional;2import org.assertj.core.api.Assertions;3public class OptionalAssert {4public static void main(String[] args) {5Optional<String> opt = Optional.of("hello");6Assertions.assertThat(opt).isPresent().contains("hello");7}8}

OptionalAssert

Using AI Code Generation

1import static org.assertj.core.api.Assertions.assertThat;2import java.util.Optional;3public class OptionalAssertExample {4   public static void main(String[] args) {5      Optional<String> optional = Optional.of("OptionalAssert");6      assertThat(optional).isPresent();7      assertThat(optional).contains("OptionalAssert");8   }9}10import static org.assertj.core.api.Assertions.assertThat;11import java.util.Optional;12public class OptionalAssertExample {13   public static void main(String[] args) {14      Optional<String> optional = Optional.of("OptionalAssert");15      assertThat(optional).isPresent();16      assertThat(optional).contains("OptionalAssert");17   }18}19import static org.assertj.core.api.Assertions.assertThat;20import java.util.Optional;21public class OptionalAssertExample {22   public static void main(String[] args) {23      Optional<String> optional = Optional.of("OptionalAssert");24      assertThat(optional).isPresent();25      assertThat(optional).contains("OptionalAssert");26   }27}28import static org.assertj.core.api.Assertions.assertThat;29import java.util.Optional;30public class OptionalAssertExample {31   public static void main(String[] args) {32      Optional<String> optional = Optional.of("OptionalAssert");33      assertThat(optional).isPresent();34      assertThat(optional).contains("OptionalAssert");35   }36}37import static org.assertj.core.api.Assertions.assertThat;38import java.util.Optional;39public class OptionalAssertExample {40   public static void main(String[] args) {41      Optional<String> optional = Optional.of("OptionalAssert");42      assertThat(optional).isPresent();43      assertThat(optional).contains("OptionalAssert");44   }45}46import static org.assertj.core.api.Assertions.assertThat;47import java.util.Optional;48public class OptionalAssertExample {49   public static void main(String[] args

OptionalAssert

Using AI Code Generation

1import org.assertj.core.api.Assertions;2import org.junit.Test;3import java.util.Optional;4public class OptionalAssertTest {5    public void testAssert() {6        Assertions.assertThat(Optional.of("test")).hasValue("test");7    }8}9	at org.junit.Assert.assertEquals(Assert.java:115)10	at org.junit.Assert.assertEquals(Assert.java:144)11	at org.assertj.core.api.AbstractAssert.isEqualTo(AbstractAssert.java:69)12	at org.assertj.core.api.OptionalAssert.hasValue(OptionalAssert.java:52)13	at OptionalAssertTest.testAssert(OptionalAssertTest.java:11)

OptionalAssert

Using AI Code Generation

1import org.assertj.core.api.OptionalAssert;2import org.assertj.core.api.Assertions;3public class OptionalAssertExample {4   public static void main(String args[]) {5      Optional<String> opt = Optional.of("Hello");6      OptionalAssert<String> optAssert = Assertions.assertThat(opt);7      optAssert.isPresent();8      optAssert.isEmpty();9   }10}

OptionalAssert

Using AI Code Generation

1import org.assertj.core.api.OptionalAssert;2import java.util.Optional;3public class OptionalAssertDemo {4    public static void main(String args[]) {5        Optional<String> opt = Optional.of("Hello");6        OptionalAssert<String> optAssert = new OptionalAssert<String>(opt);7        optAssert.isPresent();8    }9}

OptionalAssert

Using AI Code Generation

1import org.assertj.core.api.Assertions;2import org.junit.jupiter.api.Test;3import java.util.Optional;4public class OptionalAssertTest {5    public void testOptionalAssert() {6        Optional<String> optional = Optional.of("test");7        Assertions.assertThat(optional).contains("test").isPresent();8    }9}10at org.assertj.core.api.OptionalAssert.contains(OptionalAssert.java:77)11at org.assertj.core.api.OptionalAssert.contains(OptionalAssert.java:32)12at OptionalAssertTest.testOptionalAssert(OptionalAssertTest.java:16)

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