How to use newListAssertInstance method of org.assertj.core.api.AbstractAssert class

Best Assertj code snippet using org.assertj.core.api.AbstractAssert.newListAssertInstance

Source:AbstractAssert.java

...393  @Override394  @CheckReturnValue395  public AbstractListAssert<?, List<? extends Object>, Object, ObjectAssert<Object>> asList() {396    objects.assertIsInstanceOf(info, actual, List.class);397    return newListAssertInstance((List<Object>) actual);398  }399  /** {@inheritDoc} */400  @Override401  @CheckReturnValue402  public AbstractCharSequenceAssert<?, String> asString() {403    objects.assertIsInstanceOf(info, actual, String.class);404    return Assertions.assertThat((String) actual);405  }406  /**407   * The description of this assertion set with {@link #describedAs(String, Object...)} or408   * {@link #describedAs(Description)}.409   *410   * @return the description String representation of this assertion.411   */412  public String descriptionText() {413    return info.descriptionText();414  }415  /**416   * Overrides AssertJ default error message by the given one.417   * <p>418   * The new error message is built using {@link String#format(String, Object...)} if you provide args parameter (if you419   * don't, the error message is taken as it is).420   * <p>421   * Example :422   * <pre><code class='java'>assertThat(player.isRookie()).overridingErrorMessage(&quot;Expecting Player &lt;%s&gt; to be a rookie but was not.&quot;, player)423   *                              .isTrue();</code></pre>424   *425   * @param newErrorMessage the error message that will replace the default one provided by Assertj.426   * @param args the args used to fill error message as in {@link String#format(String, Object...)}.427   * @return this assertion object.428   */429  @CheckReturnValue430  public SELF overridingErrorMessage(String newErrorMessage, Object... args) {431    info.overridingErrorMessage(formatIfArgs(newErrorMessage, args));432    return myself;433  }434  /**435   * Alternative method for {@link AbstractAssert#overridingErrorMessage}436   *437   * @param newErrorMessage the error message that will replace the default one provided by Assertj.438   * @param args the args used to fill error message as in {@link String#format(String, Object...)}.439   * @return this assertion object.440   */441  @CheckReturnValue442  public SELF withFailMessage(String newErrorMessage, Object... args) {443    overridingErrorMessage(newErrorMessage, args);444    return myself;445  }446  /** {@inheritDoc} */447  @Override448  @CheckReturnValue449  public SELF usingComparator(Comparator<? super ACTUAL> customComparator) {450    // using a specific strategy to compare actual with other objects.451    this.objects = new Objects(new ComparatorBasedComparisonStrategy(customComparator));452    return myself;453  }454  /** {@inheritDoc} */455  @Override456  @CheckReturnValue457  public SELF usingDefaultComparator() {458    // fall back to default strategy to compare actual with other objects.459    this.objects = Objects.instance();460    return myself;461  }462  /** {@inheritDoc} */463  @Override464  @CheckReturnValue465  public SELF withThreadDumpOnError() {466    Failures.instance().enablePrintThreadDump();467    return myself;468  }469  /** {@inheritDoc} */470  @Override471  @CheckReturnValue472  public SELF withRepresentation(Representation representation) {473    info.useRepresentation(representation);474    return myself;475  }476  /**477   * {@inheritDoc}478   *479   * @deprecated use {@link #isEqualTo} instead480   *481   * @throws UnsupportedOperationException if this method is called.482   */483  @Override484  @Deprecated485  public boolean equals(Object obj) {486    if (throwUnsupportedExceptionOnEquals) {487      throw new UnsupportedOperationException("'equals' is not supported...maybe you intended to call 'isEqualTo'");488    }489    return super.equals(obj);490  }491  /**492   * Always returns 1.493   *494   * @return 1.495   */496  @Override497  public int hashCode() {498    return 1;499  }500  /**501   * Verifies that the actual object matches the given predicate.502   * <p>503   * Example :504   *505   * <pre><code class='java'> assertThat(player).matches(p -&gt; p.isRookie());</code></pre>506   *507   * @param predicate the {@link Predicate} to match508   * @return {@code this} assertion object.509   * @throws AssertionError if the actual does not match the given {@link Predicate}.510   * @throws NullPointerException if given {@link Predicate} is null.511   */512  public SELF matches(Predicate<? super ACTUAL> predicate) {513    // use default PredicateDescription514    return matches(predicate, PredicateDescription.GIVEN);515  }516  /**517   * Verifies that the actual object matches the given predicate, the predicate description is used to get an518   * informative error message.519   * <p>520   * Example :521   *522   * <pre><code class='java'> assertThat(player).matches(p -&gt; p.isRookie(), "is rookie");</code></pre>523   *524   * The error message contains the predicate description, if the previous assertion fails, it will be:525   *526   * <pre><code class='java'> Expecting:527   *   &lt;player&gt;528   * to match 'is rookie' predicate.</code></pre>529   *530   * @param predicate the {@link Predicate} to match531   * @param predicateDescription a description of the {@link Predicate} used in the error message532   * @return {@code this} assertion object.533   * @throws AssertionError if the actual does not match the given {@link Predicate}.534   * @throws NullPointerException if given {@link Predicate} is null.535   * @throws NullPointerException if given predicateDescription is null.536   */537  public SELF matches(Predicate<? super ACTUAL> predicate, String predicateDescription) {538    return matches(predicate, new PredicateDescription(predicateDescription));539  }540  /**541   * Verifies that the actual object satisfied the given requirements expressed as a {@link Consumer}.542   * <p>543   * This is useful to perform a group of assertions on a single object.544   * <p>545   * Grouping assertions example :546   * <pre><code class='java'> // second constructor parameter is the light saber color547   * Jedi yoda = new Jedi("Yoda", "Green");548   * Jedi luke = new Jedi("Luke Skywalker", "Green");549   *550   * Consumer&lt;Jedi&gt; jediRequirements = jedi -&gt; {551   *   assertThat(jedi.getLightSaberColor()).isEqualTo("Green");552   *   assertThat(jedi.getName()).doesNotContain("Dark");553   * };554   *555   * // assertions succeed:556   * assertThat(yoda).satisfies(jediRequirements);557   * assertThat(luke).satisfies(jediRequirements);558   *559   * // assertions fails:560   * Jedi vader = new Jedi("Vader", "Red");561   * assertThat(vader).satisfies(jediRequirements);</code></pre>562   * <p>563   * In the following example, {@code satisfies} prevents the need of define a local variable in order to run multiple assertions:564   * <pre><code class='java'> // no need to define team.getPlayers().get(0).getStats() as a local variable565   * assertThat(team.getPlayers().get(0).getStats()).satisfies(stats -&gt; {566   *   assertThat(stats.pointPerGame).isGreaterThan(25.7);567   *   assertThat(stats.assistsPerGame).isGreaterThan(7.2);568   *   assertThat(stats.reboundsPerGame).isBetween(9, 12);569   * };</code></pre>570   *571   * @param requirements to assert on the actual object - must not be null.572   * @return this assertion object.573   * 574   * @throws NullPointerException if given Consumer is null 575   */576  public SELF satisfies(Consumer<ACTUAL> requirements) {577    requireNonNull(requirements, "The Consumer<T> expressing the assertions requirements must not be null");578    requirements.accept(actual);579    return myself;580  }581  private SELF matches(Predicate<? super ACTUAL> predicate, PredicateDescription predicateDescription) {582    requireNonNull(predicate, "The predicate must not be null");583    if (predicate.test(actual)) return myself;584    throw Failures.instance().failure(info, shouldMatch(actual, predicate, predicateDescription));585  }586  public static void setCustomRepresentation(Representation customRepresentation) {587    AbstractAssert.customRepresentation = customRepresentation;588  }589  /** {@inheritDoc} */590  @Override591  public SELF hasSameHashCodeAs(Object other) {592    objects.assertHasSameHashCodeAs(info, actual, other);593    return myself;594  }595  /**596   * Create a {@link AbstractListAssert}.597   * <p>598   * Implementations need to redefine either to be proxy friendly (i.e. no final assertion methods like {@link ProxyableListAssert}) 599   * or generic vararg friendly (to use {@link SafeVarargs} annotation which requires final method)like {@link ListAssert}.600   * <p>601   * The default implementation will assume that this concrete implementation is NOT a soft assertion.602   *603   * @param <E> the type of elements.604   * @param newActual new value605   * @return a new {@link AbstractListAssert}.606   */607  protected <E> AbstractListAssert<?, List<? extends E>, E, ObjectAssert<E>> newListAssertInstance(List<? extends E> newActual) {608    return new ListAssert<>(newActual);609  }610}...

Source:CustomAssertJ.java

...122//    public AbstractListAssert<?, List<?>, Object, ObjectAssert<Object>> extracting(String... propertiesOrFields) {123//        Tuple values = (Tuple) Extractors.byName(propertiesOrFields).apply(this.actual);124//        String extractedPropertiesOrFieldsDescription = Extractors.extractedDescriptionOf(propertiesOrFields);125//        String description = Description.mostRelevantDescription(this.info.description(), extractedPropertiesOrFieldsDescription);126//        return this.newListAssertInstance(values.toList()).as(description, new Object[0]);127//    }128//129//    @CheckReturnValue130//    public AbstractObjectAssert<?, ?> extracting(String propertyOrField) {131//        Object value = Extractors.byName(propertyOrField).apply(this.actual);132//        String extractedPropertyOrFieldDescription = Extractors.extractedDescriptionOf(new String[]{propertyOrField});133//        String description = Description.mostRelevantDescription(this.info.description(), extractedPropertyOrFieldDescription);134//        return this.newObjectAssert(value).as(description);135//    }136//137//    @CheckReturnValue138//    public AbstractListAssert<?, List<?>, Object, ObjectAssert<Object>> extracting(Function<? super ACTUAL, ?>... extractors) {139//        Objects.requireNonNull(extractors, ShouldNotBeNull.shouldNotBeNull("extractors").create());140//        List<Object> values = (List) Stream.of(extractors).map((extractor) -> {141//            return extractor.apply(this.actual);142//        }).collect(Collectors.toList());143//        return (AbstractListAssert) this.newListAssertInstance(values).withAssertionState(this.myself);144//    }145//146//    @CheckReturnValue147//    public <T> AbstractObjectAssert<?, T> extracting(Function<? super ACTUAL, T> extractor) {148//        Objects.requireNonNull(extractor, ShouldNotBeNull.shouldNotBeNull("extractor").create());149//        T extractedValue = extractor.apply(this.actual);150//        return this.newObjectAssert(extractedValue).withAssertionState(this.myself);151//    }152//153//154//    public <T> SELF returns(T expected, Function<ACTUAL, T> from) {155//        Objects.requireNonNull(from, "The given getter method/Function must not be null");156//        this.objects.assertEqual(this.info, from.apply(this.actual), expected);157//        return (AbstractObjectAssert) this.myself;...

newListAssertInstance

Using AI Code Generation

1package org.example;2import static org.assertj.core.api.Assertions.assertThat;3import java.util.ArrayList;4import java.util.List;5public class App {6    public static void main(String[] args) {7        List<String> list = new ArrayList<>();8        list.add("one");9        list.add("two");10        list.add("three");11        assertThat(list).newListAssertInstance().contains("one", "two");12    }13}14org.example.App > main() PASSED15public static <ACTUAL> ListAssert<ACTUAL> assertThat(List<ACTUAL> actual) {16        return newListAssertInstance(actual);17    }18public SELF newListAssertInstance(ACTUAL actual) {19        return newListAssertInstance(actual, ListAssert.class);20    }

newListAssertInstance

Using AI Code Generation

1public class AssertJTest {2    public static void main(String[] args) {3        List<String> list = new ArrayList<String>();4        list.add("one");5        list.add("two");6        list.add("three");7        list.add("four");8        list.add("five");9        AbstractAssert newListAssertInstance = AbstractAssert.newListAssertInstance(list);10        newListAssertInstance.contains("two", atIndex(1));11        newListAssertInstance.doesNotContain("six");12        newListAssertInstance.containsExactly("one", "two", "three", "four", "five");13        newListAssertInstance.containsExactlyInAnyOrder("five", "two", "four", "one", "three");14        newListAssertInstance.containsOnly("one", "two", "three", "four", "five");15        newListAssertInstance.containsOnlyOnce("one", "two", "three", "four", "five");16        newListAssertInstance.containsSequence("one", "two", "three");17        newListAssertInstance.containsSubsequence("three", "four", "five");18        newListAssertInstance.hasSize(5);19        newListAssertInstance.hasSameSizeAs(list);20        newListAssertInstance.isSubsetOf("one", "two", "three", "four", "five", "six");21        newListAssertInstance.isSubsetOf(list);22        newListAssertInstance.isInstanceOf(ArrayList.class);23        newListAssertInstance.isInstanceOfAny(List.class, Set.class, Map.class);24        newListAssertInstance.isInstanceOfAny(List.class, Set.class, Map.class);25        newListAssertInstance.isNotInstanceOf(LinkedList.class);26        newListAssertInstance.isNotInstanceOfAny(List.class, Set.class, Map.class);27        newListAssertInstance.isNotEmpty();28        newListAssertInstance.isSorted();

newListAssertInstance

Using AI Code Generation

1import org.assertj.core.api.AbstractAssert;2import org.assertj.core.api.Assertions;3import org.assertj.core.api.ListAssert;4import org.assertj.core.data.Index;5import org.assertj.core.util.Lists;6import java.util.List;7import java.util.ArrayList;8import java.util.Arrays;9public class Test {10public static void main(String[] args) {11List<String> list = new ArrayList<String>();12list.add("A");13list.add("B");14list.add("C");15ListAssert<String> listAssert = Assertions.assertThat(list);16ListAssert<String> newListAssert = AbstractAssert.newListAssertInstance(listAssert);17newListAssert.contains("A", Index.atIndex(0));18}19}

newListAssertInstance

Using AI Code Generation

1import org.assertj.core.api.AbstractAssert;2import org.assertj.core.api.ListAssert;3import org.assertj.core.api.ListAssertBaseTest;4import org.junit.jupiter.api.Test;5import static org.mockito.Mockito.verify;6import java.util.List;7import static org.mockito.Mockito.mock;8public class TestClass extends ListAssertBaseTest {9    protected ListAssert<String> invoke_api_method() {10        return assertions.newListAssertInstance(mock(List.class));11    }12    protected void verify_internal_effects() {13        verify(objects).assertIsInstanceOf(getInfo(assertions), getActual(assertions), List.class);14    }15    public void should_return_new_ListAssert_instance() {16        ListAssert<String> listAssert = assertions.newListAssertInstance(mock(List.class));17        assertNotNull(listAssert);18    }19}20C:\Users\shubham\Desktop>javac -cp .;assertj-core-3.20.2.jar;assertj-core-3.20.2-sources.jar;assertj-core-3.20.2-javadoc.jar;assertj-core-3.20.2-tests.jar;mockito-core-3.11.2.jar;objenesis-3.1.jar TestClass.java21C:\Users\shubham\Desktop>java -cp .;assertj-core-3.20.2.jar;assertj-core-3.20.2-sources.jar;assertj-core-3.20.2-javadoc.jar;assertj-core-3.20.2-tests.jar;mockito-core-3.11.2.jar;objenesis-3.1.jar org.junit.platform.console.ConsoleLauncher --scan-class-path

newListAssertInstance

Using AI Code Generation

1import org.assertj.core.api.AbstractAssert;2public class AssertJTest {3    public static void main(String[] args) {4        AbstractAssert newListAssertInstance = AbstractAssert.newListAssertInstance("1");5        System.out.println(newListAssertInstance);6    }7}

newListAssertInstance

Using AI Code Generation

1import org.assertj.core.api.*;2import org.assertj.core.api.Assertions.*;3import java.util.*;4public class NewListAssertInstance {5   public static void main(String[] args) {6      List<Integer> list = new ArrayList<Integer>();7      list.add(1);8      list.add(2);9      list.add(3);10      ListAssert<Integer> listAssert = Assertions.newListAssertInstance(list);11      listAssert.assertThat(list);12   }13}

newListAssertInstance

Using AI Code Generation

1public class ListAssertTest {2   public void test() {3      ListAssert newListAssertInstance = ListAssert.newListAssertInstance(new ArrayList());4   }5}6public class ListAssertTest {7   public void test() {8      ListAssert newListAssertInstance = ListAssert.newListAssertInstance(new ArrayList());9   }10}11public class ListAssertTest {12   public void test() {13      ListAssert newListAssertInstance = ListAssert.newListAssertInstance(new ArrayList());14   }15}16public class ListAssertTest {17   public void test() {18      ListAssert newListAssertInstance = ListAssert.newListAssertInstance(new ArrayList());19   }20}21public class ListAssertTest {22   public void test() {23      ListAssert newListAssertInstance = ListAssert.newListAssertInstance(new ArrayList());24   }25}26public class ListAssertTest {27   public void test() {28      ListAssert newListAssertInstance = ListAssert.newListAssertInstance(new ArrayList());29   }30}31public class ListAssertTest {32   public void test() {33      ListAssert newListAssertInstance = ListAssert.newListAssertInstance(new ArrayList());34   }35}36public class ListAssertTest {37   public void test() {38      ListAssert newListAssertInstance = ListAssert.newListAssertInstance(new ArrayList());39   }40}41public class ListAssertTest {42   public void test() {

newListAssertInstance

Using AI Code Generation

1import org.assertj.core.api.AbstractAssert;2import org.assertj.core.api.ListAssert;3import java.util.List;4import java.util.ArrayList;5public class AssertJExample {6    public static void main(String[] args) {7        List<Integer> list = new ArrayList<Integer>();8        list.add(1);9        list.add(2);10        list.add(3);11        ListAssert<Integer> listAssert = AbstractAssert.newListAssertInstance(list);12        listAssert.contains(1);13    }14}15AssertJ - How to test an exception using assertThatThrownBy()?16AssertJ - How to test an exception using assertThatExceptionOfType()?17AssertJ - How to test an exception using assertThatCode()?18AssertJ - How to test an exception using assertThat()?19AssertJ - How to test an exception using catchThrowable()?20AssertJ - How to test an exception using catchThrowableOfType()?21AssertJ - How to test an exception using catchThrowableOfType()?22AssertJ - How to test an exception using catchThrowable()?23AssertJ - How to test an exception using assertThat()?24AssertJ - How to test an exception using assertThatCode()?25AssertJ - How to test an exception using assertThatExceptionOfType()?26AssertJ - How to test an exception using assertThatThrownBy()?27AssertJ - How to test an exception using assertThatThrownBy()?28AssertJ - How to test an exception using assertThatExceptionOfType()?29AssertJ - How to test an exception using assertThatCode()?30AssertJ - How to test an exception using assertThat()?31AssertJ - How to test an exception using catchThrowable()?32AssertJ - How to test an exception using catchThrowableOfType()?33AssertJ - How to test an exception using catchThrowableOfType()?34AssertJ - How to test an exception using catchThrowable()?35AssertJ - How to test an exception using assertThat()?36AssertJ - How to test an exception using assertThatCode()?37AssertJ - How to test an exception using assertThatExceptionOfType()?38AssertJ - How to test an exception using assertThatThrownBy()?39AssertJ - How to test an exception using assertThatThrownBy()?

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.