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How to use isPresent method of org.assertj.core.api.AbstractOptionalAssert class

Best Assertj code snippet using org.assertj.core.api.AbstractOptionalAssert.isPresent

Source:AbstractOptionalAssert.java

...47  /**48   * Verifies that there is a value present in the actual {@link java.util.Optional}.49   * <p>50   * Assertion will pass :51   * <pre><code class='java'> assertThat(Optional.of("something")).isPresent();</code></pre>52   *53   * Assertion will fail :54   * <pre><code class='java'> assertThat(Optional.empty()).isPresent();</code></pre> 55   *56   * @return this assertion object.57   */58  public SELF isPresent() {59    assertValueIsPresent();60    return myself;61  }62  /**63   * Verifies that there is a value present in the actual {@link java.util.Optional}, it's an alias of {@link #isPresent()}.64   * <p>65   * Assertion will pass :66   * <pre><code class='java'> assertThat(Optional.of("something")).isNotEmpty();</code></pre>67   *68   * Assertion will fail :69   * <pre><code class='java'> assertThat(Optional.empty()).isNotEmpty();</code></pre>70   *71   * @return this assertion object.72   */73  public SELF isNotEmpty() {74    return isPresent();75  }76  /**77   * Verifies that the actual {@link java.util.Optional} is empty.78   * <p>79   * Assertion will pass :80   * <pre><code class='java'> assertThat(Optional.empty()).isEmpty();</code></pre>81   *82   * Assertion will fail :83   * <pre><code class='java'> assertThat(Optional.of("something")).isEmpty();</code></pre>84   *85   * @return this assertion object.86   */87  public SELF isEmpty() {88    isNotNull();89    if (actual.isPresent()) throwAssertionError(shouldBeEmpty(actual));90    return myself;91  }92  /**93   * Verifies that the actual {@link java.util.Optional} is empty (alias of {@link #isEmpty()}).94   * <p>95   * Assertion will pass :96   * <pre><code class='java'> assertThat(Optional.empty()).isNotPresent();</code></pre>97   *98   * Assertion will fail :99   * <pre><code class='java'> assertThat(Optional.of("something")).isNotPresent();</code></pre>100   *101   * @return this assertion object.102   */103  public SELF isNotPresent() {104    return isEmpty();105  }106  /**107   * Verifies that the actual {@link java.util.Optional} contains the given value (alias of {@link #hasValue(Object)}).108   * <p>109   * Assertion will pass :110   * <pre><code class='java'> assertThat(Optional.of("something")).contains("something");111   * assertThat(Optional.of(10)).contains(10);</code></pre>112   *113   * Assertion will fail :114   * <pre><code class='java'> assertThat(Optional.of("something")).contains("something else");115   * assertThat(Optional.of(20)).contains(10);</code></pre>116   *117   * @param expectedValue the expected value inside the {@link java.util.Optional}.118   * @return this assertion object.119   */120  public SELF contains(VALUE expectedValue) {121    isNotNull();122    checkNotNull(expectedValue);123    if (!actual.isPresent()) throwAssertionError(shouldContain(expectedValue));124    if (!optionalValueComparisonStrategy.areEqual(actual.get(), expectedValue))125      throwAssertionError(shouldContain(actual, expectedValue));126    return myself;127  }128  /**129   * Verifies that the actual {@link java.util.Optional} contains a value and gives this value to the given130   * {@link java.util.function.Consumer} for further assertions. Should be used as a way of deeper asserting on the131   * containing object, as further requirement(s) for the value.132   * <p>133   * Assertions will pass :134   * <pre><code class='java'> // one requirement 135   * assertThat(Optional.of(10)).hasValueSatisfying(i -&gt; { assertThat(i).isGreaterThan(9); });136   *137   * // multiple requirements138   * assertThat(Optional.of(someString)).hasValueSatisfying(s -&gt; {139   *   assertThat(s).isEqualTo("something");140   *   assertThat(s).startsWith("some");141   *   assertThat(s).endsWith("thing");142   * }); </code></pre>143   *144   * Assertions will fail :145   * <pre><code class='java'> assertThat(Optional.of("something")).hasValueSatisfying(s -&gt; {146   *     assertThat(s).isEqualTo("something else");147   *   });148   *149   * // fail because optional is empty, there is no value to perform assertion on  150   * assertThat(Optional.empty()).hasValueSatisfying(o -&gt; {});</code></pre>151   *152   * @param requirement to further assert on the object contained inside the {@link java.util.Optional}.153   * @return this assertion object.154   */155  public SELF hasValueSatisfying(Consumer<VALUE> requirement) {156    assertValueIsPresent();157    requirement.accept(actual.get());158    return myself;159  }160  /**161   * Verifies that the actual {@link Optional} contains a value which satisfies the given {@link Condition}.162   * <p>163   * Examples:164   * <pre><code class='java'> Condition&lt;TolkienCharacter&gt; isAnElf = new Condition&lt;&gt;(character -&gt; character.getRace() == ELF, "an elf"); 165   * 166   * TolkienCharacter legolas = new TolkienCharacter("Legolas", 1000, ELF);167   * TolkienCharacter frodo = new TolkienCharacter("Frodo", 33, HOBBIT);168   * 169   * // assertion succeeds170   * assertThat(Optional.of(legolas)).hasValueSatisfying(isAnElf);171   *                                     172   * // assertion fails173   * assertThat(Optional.of(frodo)).hasValueSatisfying(isAnElf);</code></pre>174   *175   * @param condition the given condition.176   * @return this assertion object.177   * @throws AssertionError       if the actual {@link Optional} is null or empty.178   * @throws NullPointerException if the given condition is {@code null}.179   * @throws AssertionError       if the actual value does not satisfy the given condition.180   * @since 3.6.0181   */182  public SELF hasValueSatisfying(Condition<? super VALUE> condition) {183    assertValueIsPresent();184    conditions.assertIs(info, actual.get(), condition);185    return myself;186  }187  /**188   * Verifies that the actual {@link java.util.Optional} contains the given value (alias of {@link #contains(Object)}).189   * <p>190   * Assertion will pass :191   * <pre><code class='java'> assertThat(Optional.of("something")).hasValue("something");192   * assertThat(Optional.of(10)).contains(10);</code></pre>193   *194   * Assertion will fail :195   * <pre><code class='java'> assertThat(Optional.of("something")).hasValue("something else");196   * assertThat(Optional.of(20)).contains(10);</code></pre>197   *198   * @param expectedValue the expected value inside the {@link java.util.Optional}.199   * @return this assertion object.200   */201  public SELF hasValue(VALUE expectedValue) {202    return contains(expectedValue);203  }204  /**205   * Verifies that the actual {@link Optional} contains a value that is an instance of the argument.206   * <p>207   * Assertions will pass:208   *209   * <pre><code class='java'> assertThat(Optional.of("something")).containsInstanceOf(String.class)210   *                                     .containsInstanceOf(Object.class);211   *212   * assertThat(Optional.of(10)).containsInstanceOf(Integer.class);</code></pre>213   *214   * Assertion will fail:215   *216   * <pre><code class='java'> assertThat(Optional.of("something")).containsInstanceOf(Integer.class);</code></pre>217   *218   * @param clazz the expected class of the value inside the {@link Optional}.219   * @return this assertion object.220   */221  public SELF containsInstanceOf(Class<?> clazz) {222    assertValueIsPresent();223    if (!clazz.isInstance(actual.get())) throwAssertionError(shouldContainInstanceOf(actual, clazz));224    return myself;225  }226  /**227   * Use field/property by field/property comparison (including inherited fields/properties) instead of relying on228   * actual type A <code>equals</code> method to compare the {@link Optional} value's object for incoming assertion229   * checks. Private fields are included but this can be disabled using230   * {@link Assertions#setAllowExtractingPrivateFields(boolean)}.231   * <p>232   * This can be handy if <code>equals</code> method of the {@link Optional} value's object to compare does not suit233   * you.234   * </p>235   * Note that the comparison is <b>not</b> recursive, if one of the fields/properties is an Object, it will be236   * compared to the other field/property using its <code>equals</code> method.237   * <p>238   * Example:239   *240   * <pre><code class='java'> TolkienCharacter frodo = new TolkienCharacter("Frodo", 33, HOBBIT);241   * TolkienCharacter frodoClone = new TolkienCharacter("Frodo", 33, HOBBIT);242   *243   * // Fail if equals has not been overridden in TolkienCharacter as equals default implementation only compares references244   * assertThat(Optional.of(frodo)).contains(frodoClone);245   *246   * // frodo and frodoClone are equals when doing a field by field comparison.247   * assertThat(Optional.of(frodo)).usingFieldByFieldValueComparator().contains(frodoClone);</code></pre>248   *249   * @return {@code this} assertion object.250   */251  @CheckReturnValue252  public SELF usingFieldByFieldValueComparator() {253    return usingValueComparator(new FieldByFieldComparator());254  }255  /**256   * Use given custom comparator instead of relying on actual type A <code>equals</code> method to compare the257   * {@link Optional} value's object for incoming assertion checks.258   * <p>259   * Custom comparator is bound to assertion instance, meaning that if a new assertion is created, it will use default260   * comparison strategy.261   * <p>262   * Examples :263   *264   * <pre><code class='java'> TolkienCharacter frodo = new TolkienCharacter("Frodo", 33, HOBBIT);265   * TolkienCharacter frodoClone = new TolkienCharacter("Frodo", 33, HOBBIT);266   *267   * // Fail if equals has not been overridden in TolkienCharacter as equals default implementation only compares references268   * assertThat(Optional.of(frodo)).contains(frodoClone);269   *270   * // frodo and frodoClone are equals when doing a field by field comparison.271   * assertThat(Optional.of(frodo)).usingValueComparator(new FieldByFieldComparator()).contains(frodoClone);</code></pre>272   *273   * @param customComparator the comparator to use for incoming assertion checks.274   * @throws NullPointerException if the given comparator is {@code null}.275   * @return {@code this} assertion object.276   */277  @CheckReturnValue278  public SELF usingValueComparator(Comparator<? super VALUE> customComparator) {279    optionalValueComparisonStrategy = new ComparatorBasedComparisonStrategy(customComparator);280    return myself;281  }282  /**283   * Revert to standard comparison for incoming assertion {@link Optional} value checks.284   * <p>285   * This method should be used to disable a custom comparison strategy set by calling286   * {@link #usingValueComparator(Comparator)}.287   *288   * @return {@code this} assertion object.289   */290  @CheckReturnValue291  public SELF usingDefaultValueComparator() {292    // fall back to default strategy to compare actual with other objects.293    optionalValueComparisonStrategy = StandardComparisonStrategy.instance();294    return myself;295  }296  /**297   * Verifies that the actual {@link java.util.Optional} contains the instance given as an argument (i.e. it must be the298   * same instance).299   * <p>300   * Assertion will pass :301   *302   * <pre><code class='java'> String someString = "something";303   * assertThat(Optional.of(someString)).containsSame(someString);304   *305   * // Java will create the same 'Integer' instance when boxing small ints306   * assertThat(Optional.of(10)).containsSame(10);</code></pre>307   *308   * Assertion will fail :309   *310   * <pre><code class='java'> // not even equal:311   * assertThat(Optional.of("something")).containsSame("something else");312   * assertThat(Optional.of(20)).containsSame(10);313   *314   * // equal but not the same: 315   * assertThat(Optional.of(new String("something"))).containsSame(new String("something"));316   * assertThat(Optional.of(new Integer(10))).containsSame(new Integer(10));</code></pre>317   *318   * @param expectedValue the expected value inside the {@link java.util.Optional}.319   * @return this assertion object.320   */321  public SELF containsSame(VALUE expectedValue) {322    isNotNull();323    checkNotNull(expectedValue);324    if (!actual.isPresent()) throwAssertionError(shouldContain(expectedValue));325    if (actual.get() != expectedValue) throwAssertionError(shouldContainSame(actual, expectedValue));326    return myself;327  }328  /**329   * Call {@link Optional#flatMap(Function) flatMap} on the {@code Optional} under test, assertions chained afterwards are performed on the {@code Optional} resulting from the flatMap call.330   * <p>331   * Examples:332   * <pre><code class='java'> Function&lt;String, Optional&lt;String&gt;&gt; UPPER_CASE_OPTIONAL_STRING = 333   *       s -&gt; s == null ? Optional.empty() : Optional.of(s.toUpperCase());334   * 335   * // assertions succeed336   * assertThat(Optional.of("something")).contains("something")337   *                                     .flatMap(UPPER_CASE_OPTIONAL_STRING)338   *                                     .contains("SOMETHING");339   *                                     340   * assertThat(Optional.&lt;String&gt;empty()).flatMap(UPPER_CASE_OPTIONAL_STRING)341   *                                     .isEmpty();342   *                                     343   * assertThat(Optional.&lt;String&gt;ofNullable(null)).flatMap(UPPER_CASE_OPTIONAL_STRING)344   *                                              .isEmpty();345   *                                     346   * // assertion fails347   * assertThat(Optional.of("something")).flatMap(UPPER_CASE_OPTIONAL_STRING)348   *                                     .contains("something");</code></pre>349   *350   * @param <U> the type wrapped in the {@link Optional} after the {@link Optional#flatMap(Function) flatMap} operation.351   * @param mapper the {@link Function} to use in the {@link Optional#flatMap(Function) flatMap} operation.352   * @return a new {@link AbstractOptionalAssert} for assertions chaining on the flatMap of the Optional.353   * @throws AssertionError if the actual {@link Optional} is null.354   * @since 3.6.0355   */356  @CheckReturnValue357  public <U> AbstractOptionalAssert<?, U> flatMap(Function<? super VALUE, Optional<U>> mapper) {358    isNotNull();359    return assertThat(actual.flatMap(mapper));360  }361  /**362   * Call {@link Optional#map(Function) map} on the {@code Optional} under test, assertions chained afterwards are performed on the {@code Optional} resulting from the map call.363   * <p>364   * Examples:365   * <pre><code class='java'> // assertions succeed 366   * assertThat(Optional.&lt;String&gt;empty()).map(String::length)367   *                                     .isEmpty();368   * 369   * assertThat(Optional.of("42")).contains("42")370   *                              .map(String::length)371   *                              .contains(2);372   *                              373   * // assertion fails374   * assertThat(Optional.of("42")).map(String::length)375   *                              .contains(3);</code></pre>376   *377   * @param <U> the type wrapped in the {@link Optional} after the {@link Optional#map(Function) map} operation.378   * @param mapper the {@link Function} to use in the {@link Optional#map(Function) map} operation.379   * @return a new {@link AbstractOptionalAssert} for assertions chaining on the map of the Optional.380   * @throws AssertionError if the actual {@link Optional} is null.381   * @since 3.6.0382   */383  @CheckReturnValue384  public <U> AbstractOptionalAssert<?, U> map(Function<? super VALUE, ? extends U> mapper) {385    isNotNull();386    return assertThat(actual.map(mapper));387  }388  /**389   * Verifies that the actual {@link Optional} is not {@code null} and not empty and returns an Object assertion 390   * that allows chaining (object) assertions on the optional value.391   * <p>392   * Note that it is only possible to return Object assertions after calling this method due to java generics limitations.  393   * <p>394   * Example:395   * <pre><code class='java'> TolkienCharacter frodo = new TolkienCharacter("Frodo", 33, HOBBIT);396   * TolkienCharacter sam = new TolkienCharacter("Sam", 38, null);397   *398   * // assertion succeeds since all frodo's fields are set399   * assertThat(Optional.of(frodo)).get().hasNoNullFields();400   *401   * // assertion does not succeed because sam does not have its race set402   * assertThat(Optional.of(sam)).get().hasNoNullFields();</code></pre>403   *404   * @return a new {@link AbstractObjectAssert} for assertions chaining on the value of the Optional.405   * @throws AssertionError if the actual {@link Optional} is null.406   * @throws AssertionError if the actual {@link Optional} is empty.407   * @since 3.9.0408   */409  @CheckReturnValue410  public AbstractObjectAssert<?, VALUE> get() {411    isPresent();412    return assertThat(actual.get());413  }414  private void checkNotNull(Object expectedValue) {415    checkArgument(expectedValue != null, "The expected value should not be <null>.");416  }417  private void assertValueIsPresent() {418    isNotNull();419    if (!actual.isPresent()) throwAssertionError(shouldBePresent(actual));420  }421}...

Source:AssertJOptionalRules.java

...35          optionalAssert.isNotEmpty(), optionalAssert.isNotEqualTo(Optional.empty()));36    }37    @AfterTemplate38    AbstractOptionalAssert<?, T> after(AbstractOptionalAssert<?, T> optionalAssert) {39      return optionalAssert.isPresent();40    }41  }42  static final class AssertThatOptionalIsPresent<T> {43    @BeforeTemplate44    AbstractAssert<?, ?> before(Optional<T> optional) {45      return Refaster.anyOf(46          assertThat(optional.isPresent()).isTrue(), assertThat(optional.isEmpty()).isFalse());47    }48    @AfterTemplate49    @UseImportPolicy(STATIC_IMPORT_ALWAYS)50    OptionalAssert<T> after(Optional<T> optional) {51      return assertThat(optional).isPresent();52    }53  }54  static final class AbstractOptionalAssertIsEmpty<T> {55    @BeforeTemplate56    AbstractAssert<?, ?> before(AbstractOptionalAssert<?, T> optionalAssert) {57      return Refaster.anyOf(58          optionalAssert.isNotPresent(), optionalAssert.isEqualTo(Optional.empty()));59    }60    @AfterTemplate61    AbstractOptionalAssert<?, T> after(AbstractOptionalAssert<?, T> optionalAssert) {62      return optionalAssert.isEmpty();63    }64  }65  static final class AssertThatOptionalIsEmpty<T> {66    @BeforeTemplate67    AbstractAssert<?, ?> before(Optional<T> optional) {68      return Refaster.anyOf(69          assertThat(optional.isEmpty()).isTrue(), assertThat(optional.isPresent()).isFalse());70    }71    @AfterTemplate72    @UseImportPolicy(STATIC_IMPORT_ALWAYS)73    OptionalAssert<T> after(Optional<T> optional) {74      return assertThat(optional).isEmpty();75    }76  }77  static final class AbstractOptionalAssertHasValue<T> {78    @BeforeTemplate79    AbstractAssert<?, ?> before(AbstractOptionalAssert<?, T> optionalAssert, T value) {80      return Refaster.anyOf(81          optionalAssert.get().isEqualTo(value),82          optionalAssert.isEqualTo(Optional.of(value)),83          optionalAssert.contains(value),84          optionalAssert.isPresent().hasValue(value));85    }86    @AfterTemplate87    AbstractOptionalAssert<?, T> after(AbstractOptionalAssert<?, T> optionalAssert, T value) {88      return optionalAssert.hasValue(value);89    }90  }91  static final class AbstractOptionalAssertContainsSame<T> {92    @BeforeTemplate93    AbstractAssert<?, ?> before(AbstractOptionalAssert<?, T> optionalAssert, T value) {94      return Refaster.anyOf(95          optionalAssert.get().isSameAs(value), optionalAssert.isPresent().isSameAs(value));96    }97    @AfterTemplate98    AbstractOptionalAssert<?, T> after(AbstractOptionalAssert<?, T> optionalAssert, T value) {99      return optionalAssert.containsSame(value);100    }101  }102  static final class AssertThatOptionalHasValueMatching<T> {103    @BeforeTemplate104    AbstractOptionalAssert<?, T> before(Optional<T> optional, Predicate<? super T> predicate) {105      return assertThat(optional.filter(predicate)).isPresent();106    }107    @AfterTemplate108    @UseImportPolicy(STATIC_IMPORT_ALWAYS)109    AbstractObjectAssert<?, T> after(Optional<T> optional, Predicate<? super T> predicate) {110      return assertThat(optional).get().matches(predicate);111    }112  }113}...

isPresent

Using AI Code Generation

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

isPresent

Using AI Code Generation

1import java.util.Optional;2import org.assertj.core.api.Assertions;3public class AssertJOptionalExample {4    public static void main(String[] args) {5        Optional<String> optional = Optional.of("Hello World");6        Assertions.assertThat(optional).isPresent();7        Assertions.assertThat(optional).isPresent().contains("Hello World").contains("Hello");8    }9}10org.assertj.core.api.Assertions.assertThat(AbstractOptionalAssert.java:37)11org.assertj.core.api.Assertions.assertThat(AbstractOptionalAssert.java:30)12AssertJOptionalExample.main(AssertJOptionalExample.java:9)13java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)14java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)15java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)16java.base/java.lang.reflect.Method.invoke(Method.java:566)17org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:675)18org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60)19org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131)20org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:149)21org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:140)22org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:84)23org.junit.jupiter.engine.execution.ExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(ExecutableInvoker.java:115)24org.junit.jupiter.engine.execution.ExecutableInvoker.lambda$invoke$0(ExecutableInvoker.java:105)25org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106)26org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64)27org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45)28org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37)29org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:104)30org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:98)31org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$6(TestMethodTestDescriptor.java:210)32org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)

isPresent

Using AI Code Generation

1import org.assertj.core.api.Assertions;2import org.junit.Test;3import java.util.Optional;4public class OptionalTest {5    public void testOptional() {6        Optional<String> opt = Optional.of("abc");7        Assertions.assertThat(opt).isPresent();8    }9}

isPresent

Using AI Code Generation

1package org.example;2import java.util.Optional;3import org.assertj.core.api.Assertions;4public class Example1 {5    public static void main(String[] args) {6        Optional<String> optional = Optional.of("Value");7        Assertions.assertThat(optional).isPresent();8    }9}10org.example.Example1 > main() PASSED11package org.example;12import java.util.Optional;13import org.assertj.core.api.Assertions;14public class Example2 {15    public static void main(String[] args) {16        Optional<String> optional = Optional.empty();17        Assertions.assertThat(optional).isPresent();18    }19}20org.example.Example2 > main() FAILED21	at org.example.Example2.main(Example2.java:11)22package org.example;23import java.util.Optional;24import org.assertj.core.api.Assertions;25public class Example3 {26    public static void main(String[] args) {27        Optional<String> optional = Optional.of("Value");28        Assertions.assertThat(optional).isNotPresent();29    }30}31org.example.Example3 > main() FAILED32	at org.example.Example3.main(Example3.java:11)33package org.example;34import java.util.Optional;35import org.assertj.core.api.Assertions;36public class Example4 {37    public static void main(String[] args) {38        Optional<String> optional = Optional.empty();39        Assertions.assertThat(optional).isNotPresent();40    }41}42org.example.Example4 > main() PASSED

isPresent

Using AI Code Generation

1import static org.assertj.core.api.Assertions.assertThat;2import java.util.Optional;3public class AssertJAssertThatOptionalIsPresent {4    public static void main(String[] args) {5        Optional<String> opt = Optional.empty();6        assertThat(opt).as("Optional is empty").isNotPresent();7        opt = Optional.of("AssertJ");8        assertThat(opt).as("Optional is not empty").isPresent();9    }10}

isPresent

Using AI Code Generation

1import java.util.Optional;2import org.assertj.core.api.Assertions;3import org.junit.Test;4public class AssertJOptionalTest {5    public void whenCreateEmptyOptional_thenCorrect() {6        Optional<String> opt = Optional.empty();7        Assertions.assertThat(opt).isNotPresent();8    }9}10import java.util.Optional;11import org.assertj.core.api.Assertions;12import org.junit.Test;13public class AssertJOptionalTest {14    public void whenCreateOptionalWithNull_thenCorrect() {15        Optional<String> opt = Optional.ofNullable(null);16        Assertions.assertThat(opt).isNotPresent();17    }18}19import java.util.Optional;20import org.assertj.core.api.Assertions;21import org.junit.Test;22public class AssertJOptionalTest {23    public void whenCreateOptionalWithValue_thenCorrect() {24        Optional<String> opt = Optional.of("value");25        Assertions.assertThat(opt).isPresent();26    }27}28import java.util.Optional;29import org.assertj.core.api.Assertions;30import org.junit.Test;31public class AssertJOptionalTest {32    public void whenCreateOptionalWithValue_thenCorrect() {33        Optional<String> opt = Optional.of("value");34        Assertions.assertThat(opt).isPresent();35        Assertions.assertThat(opt).contains("value");36    }37}38import java.util.Optional;39import org.assertj.core.api.Assertions;40import org.junit.Test;41public class AssertJOptionalTest {42    public void whenCreateOptionalWithValue_thenCorrect() {43        Optional<String> opt = Optional.of("value");44        Assertions.assertThat(opt).isPresent();45        Assertions.assertThat(opt).contains("value");46        Assertions.assertThat(opt.get()).isEqualTo("value");47    }48}

isPresent

Using AI Code Generation

1import java.util.Optional;2import org.assertj.core.api.AbstractOptionalAssert;3import org.assertj.core.api.Assertions;4import org.junit.Test;5public class AssertjOptionalExample {6    public void testOptional() {7        Optional<String> optional = Optional.of("test");8        AbstractOptionalAssert<?, ?> optionalAssert = Assertions.assertThat(optional);9        optionalAssert.isPresent();10    }11}12Related posts: AssertJ OptionalAssert isNotPresent() Method Example AssertJ OptionalAssert contains() Method Example Asser

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