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

Best Assertj code snippet using org.assertj.core.api.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 org.junit.jupiter.api.Test;3import static org.assertj.core.api.Assertions.assertThat;4import static org.assertj.core.api.Assertions.assertThatThrownBy;5import static org.assertj.core.api.Assertions.catchThrowable;6import static org.assertj.core.api.Assertions.catchThrowableOfType;7import static org.assertj.core.api.Assertions.catchThrowableWithCause;8import static org.assertj.core.api.Assertions.catchThrowableWithCauseOfType;9import static org.assertj.core.api.Assertions.catchThrowableWithMessage;10import static org.assertj.core.api.Assertions.catchThrowableWithMessageContaining;11import static org.assertj.core.api.Assertions.catchThrowableWithMessageMatching;12import static org.assertj.core.api.Assertions.catchThrowableWithMessageStartingWith;13import static org.assertj.core.api.Assertions.catchThrowableWithMessageEndingWith;14import static org.assertj.core.api.Assertions.catchThrowableWithMessageContainingAll;15import static org.assertj.core.api.Assertions.catchThrowableWithMessageMatchingAll;16import static org.assertj.core.api.Assertions.catchThrowableWithMessageStartingWithAll;17import static org.assertj.core.api.Assertions.catchThrowableWithMessageEndingWithAll;18import static org.assertj.core.api.Assertions.catchThrowableWithMessageContainingAny;19import static org.assertj.core.api.Assertions.catchThrowableWithMessageMatchingAny;20import static org.assertj.core.api.Assertions.catchThrowableWithMessageStartingWithAny;21import static org.assertj.core.api.Assertions.catchThrowableWithMessageEndingWithAny;22import static org.assertj.core.api.Assertions.catchThrowableWithMessageContainingSequence;23import static org.assertj.core.api.Assertions.catchThrowableWithMessageContainingAllSequence;24import static org.assertj.core.api.Assertions.catchThrowableWithMessageContainingAnySequence;25import static org.assertj.core.api.Assertions.catchThrowableWithMessageMatchingSequence;26import static org.assertj.core.api.Assertions.catchThrowableWithMessageMatchingAllSequence;27import static org.assertj.core.api.Assertions.catchThrowableWithMessageMatchingAnySequence;28import static org.assertj.core.api.Assertions.catchThrowableWithMessageStartingWithSequence;29import static org.assertj.core.api.Assertions.catchThrowableWithMessageStartingWithAllSequence;30import static org.assertj.core.api.Assertions.catchThrowableWithMessageStartingWithAnySequence;31import static org.assertj.core.api.Assertions.catchThrowableWithMessageEndingWithSequence;32import static org.assertj.core.api.Assertions.catchThrowableWithMessageEndingWithAllSequence;33import static org.assertj.core.api.Assertions.catchThrowableWithMessageEndingWithAnySequence;34import static org.assertj.core.api.Assertions.catchThrowableWithMessageMatchingPattern;35import static org.assertj.core.api.Assertions.catchThrowableWithMessageMatchingAllPattern;36import static org.assertj.core.api.Assertions.catchThrowableWithMessageMatchingAnyPattern;37import static org.assertj.core.api.Assertions.catchThrowableWithMessageMatchingPattern

OptionalAssert

Using AI Code Generation

1package com.mycompany.app;2import static org.assertj.core.api.Assertions.assertThat;3import static org.assertj.core.api.Assertions.assertThatThrownBy;4import java.util.Optional;5import org.junit.Test;6public class OptionalAssertTest {7    public void testOptionalAssert() {8        Optional<String> optional = Optional.of("Hello");9        assertThat(optional).isPresent();10        assertThat(optional).hasValue("Hello");11        assertThat(optional).hasValueSatisfying(s -> assertThat(s).startsWith("H"));12        assertThat(optional).contains("Hello");13        assertThat(optional).containsInstanceOf(String.class);14        assertThat(optional).containsInstanceOf(Object.class);15        assertThat(optional).containsSame("Hello");16        assertThat(optional).containsExactly("Hello");17        assertThat(optional).containsExactlyInAnyOrder("Hello");18        assertThat(optional).containsExactlyInAnyOrderElementsOf(Optional.of("Hello"));19        assertThat(optional).containsExactlyElementsOf(Optional.of("Hello"));20        assertThat(optional).isEqualTo(Optional.of("Hello"));21        assertThat(optional).isNotEqualTo(Optional.of("Hello"));22        assertThat(optional).hasValueSatisfying(s -> assertThat(s).startsWith("H"));23        assertThat(optional).hasValueSatisfying(s -> assertThat(s).startsWith("H"));24        assertThat(optional).hasValueSatisfying(s -> assertThat(s).startsWith("H"));25    }26    public void testOptionalAssertEmpty() {27        Optional<String> optional = Optional.empty();28        assertThat(optional).isNotPresent();29        assertThat(optional).isEmpty();30        assertThat(optional).hasValueSatisfying(s -> assertThat(s).startsWith("H"));31        assertThat(optional).isEmpty();

OptionalAssert

Using AI Code Generation

1import static org.assertj.core.api.Assertions.assertThat;2import java.util.Optional;3public class OptionalAssert {4   public static void main(String[] args) {5      OptionalAssert optionalAssert = new OptionalAssert();6      optionalAssert.testOptionalAssert();7   }8   public void testOptionalAssert() {9      Optional<String> optional = Optional.of("abc");10      assertThat(optional).isPresent().hasValue("abc");11      assertThat(optional).isNotNull();12   }13}14BUILD SUCCESSFUL (total time: 0 seconds)15Java 8 Optional Class – isPresent(), get() and ifPresent()16Java 8 Optional Class – orElse() and orElseGet()17Java 8 Optional Class – orElseThrow()18Java 8 Optional Class – filter()19Java 8 Optional Class – map()20Java 8 Optional Class – flatMap()21Java 8 Optional Class – ofNullable()22Java 8 Optional Class – isPresent(), get() and ifPresent() Java 8 Optional Class – ofNullable() »

OptionalAssert

Using AI Code Generation

1package com.automationrhapsody.junit5;2import org.junit.jupiter.api.Test;3import static org.assertj.core.api.Assertions.assertThat;4public class OptionalAssertTest {5    public void testOptionalAssert() {6        assertThat(Optional.of("Test")).isPresent();7    }8}

OptionalAssert

Using AI Code Generation

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

OptionalAssert

Using AI Code Generation

1import org.assertj.core.api.OptionalAssert;2import org.assertj.core.api.Assertions;3import java.util.Optional;4public class AssertJOptional {5	public static void main(String[] args) {6		Optional<String> optional = Optional.of("Hello World");7		OptionalAssert<String> optionalAssert = Assertions.assertThat(optional);8		optionalAssert.isPresent();9		optionalAssert.hasValue("Hello World");10	}11}

OptionalAssert

Using AI Code Generation

1import static org.assertj.core.api.Assertions.assertThat;2import static org.assertj.core.api.Assertions.assertThatThrownBy;3import java.util.Optional;4import org.junit.Test;5public class OptionalsTest {6	public void givenOptional_whenIsPresentWorks_thenCorrect() {7		Optional<String> opt = Optional.of("bam");8		assertThat(opt.isPresent()).isTrue();9		assertThat(opt.get()).isEqualTo("bam");10	}11	public void givenOptional_whenIsPresentWorks_thenCorrect2() {12		Optional<String> opt = Optional.empty();13		assertThat(opt.isPresent()).isFalse();14	}15	public void givenOptional_whenIfPresentWorks_thenCorrect() {16		Optional<String> opt = Optional.of("bam");17		opt.ifPresent(name -> assertThat(name).isEqualTo("bam"));18	}19	public void givenOptional_whenIfPresentWorks_thenCorrect2() {20		Optional<String> opt = Optional.empty();21		opt.ifPresent(name -> assertThat(name).isEqualTo("bam"));22	}23	public void givenOptional_whenOrElseWorks_thenCorrect() {24		Optional<String> opt = Optional.of("bam");25		assertThat(opt.orElse("fallback")).isEqualTo("bam");26	}27	public void givenOptional_whenOrElseWorks_thenCorrect2() {28		Optional<String> opt = Optional.empty();29		assertThat(opt.orElse("fallback")).isEqualTo("fallback");30	}31	public void givenOptional_whenOrElseGetWorks_thenCorrect() {32		Optional<String> opt = Optional.of("bam");33		assertThat(opt.orElseGet(() -> "fallback")).isEqualTo("bam");34	}35	public void givenOptional_whenOrElseGetWorks_thenCorrect2() {36		Optional<String> opt = Optional.empty();37		assertThat(opt.orElseGet(() -> "fallback")).isEqualTo("fallback");38	}39	public void givenOptional_whenOrElseThrowWorks_thenCorrect() {40		Optional<String> opt = Optional.of("bam");41		assertThat(opt.orElseThrow(IllegalArgumentException::new)).isEqualTo("bam");42	}43	public void givenOptional_whenOrElseThrowWorks_thenCorrect2() {44		Optional<String> opt = Optional.empty();45		assertThatThrownBy(() -> opt.orElseThrow(IllegalArgumentException::new))46				.isInstanceOf(IllegalArgumentException.class);47	}48	public void givenOptional_whenMapWorks_thenCorrect() {49		Optional<String> opt = Optional.of("bam");50		assertThat(opt.map(String::toUpperCase).get()).isEqualTo("BAM");51	}

OptionalAssert

Using AI Code Generation

1import org.assertj.core.api.OptionalAssert;2import java.util.Optional;3public class OptionalAssertTest {4   public static void main(String[] args) {5      Optional<String> opt = Optional.of("Java");6      OptionalAssert<String> optionalAssert = new OptionalAssert<String>(opt);7      optionalAssert.isPresent();8      optionalAssert.contains("Java");9   }10}

OptionalAssert

Using AI Code Generation

1import static org.assertj.core.api.Assertions.*;2import java.util.Optional;3public class OptionalAssertExample {4    public static void main(String[] args) {5        Optional<String> opt = Optional.of("Java");6        OptionalAssert<String> optAssert = assertThat(opt);7        optAssert.isPresent();8        optAssert.hasValue("Java");9        optAssert.hasValueSatisfying(s -> assertThat(s).startsWith("J"));10        assertThat(opt)11                .isPresent()12                .hasValue("Java")13                .hasValueSatisfying(s -> assertThat(s).startsWith("J"));14        Optional<String> emptyOpt = Optional.empty();15        OptionalAssert<String> emptyOptAssert = assertThat(emptyOpt);16        emptyOptAssert.isEmpty();17    }18}

OptionalAssert

Using AI Code Generation

1import org.assertj.core.api.*;2public class OptionalAssertExample {3    public static void main(String[] args) {4        Integer nullValue = null;5        OptionalAssert.assertThat(Optional.ofNullable(nullValue)).isEmpty();6    }7}

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