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How to use internalFirst method of org.assertj.core.api.AbstractIterableAssert class

Best Assertj code snippet using org.assertj.core.api.AbstractIterableAssert.internalFirst

Source:AbstractIterableAssert.java

...2492   * @see #first(InstanceOfAssertFactory)2493   */2494  @CheckReturnValue2495  public ELEMENT_ASSERT first() {2496    return internalFirst();2497  }2498  /**2499   * Navigate and allow to perform assertions on the first element of the {@link Iterable} under test.2500   * <p>2501   * The {@code assertFactory} parameter allows to specify an {@link InstanceOfAssertFactory}, which is used to get the2502   * assertions narrowed to the factory type.2503   * <p>2504   * Example: use of {@code String} assertions after {@code first(as(InstanceOfAssertFactories.STRING)}2505   * <pre><code class='java'> Iterable&lt;String&gt; hobbits = newArrayList("Frodo", "Sam", "Pippin");2506   *2507   * // assertion succeeds2508   * assertThat(hobbits).first(as(InstanceOfAssertFactories.STRING))2509   *                    .startsWith("Fro")2510   *                    .endsWith("do");2511   * // assertion fails2512   * assertThat(hobbits).first(as(InstanceOfAssertFactories.STRING))2513   *                    .startsWith("Pip");2514   * // assertion fails because of wrong factory type2515   * assertThat(hobbits).first(as(InstanceOfAssertFactories.INTEGER))2516   *                    .isZero();</code></pre>2517   *2518   * @param <ASSERT>      the type of the resulting {@code Assert}2519   * @param assertFactory the factory which verifies the type and creates the new {@code Assert}2520   * @return a new narrowed {@link Assert} instance for assertions chaining on the first element2521   * @throws AssertionError if the actual {@link Iterable} is empty.2522   * @throws NullPointerException if the given factory is {@code null}2523   * @since 3.14.02524   */2525  @CheckReturnValue2526  public <ASSERT extends AbstractAssert<?, ?>> ASSERT first(InstanceOfAssertFactory<?, ASSERT> assertFactory) {2527    return internalFirst().asInstanceOf(assertFactory);2528  }2529  private ELEMENT_ASSERT internalFirst() {2530    isNotEmpty();2531    return toAssert(actual.iterator().next(), navigationDescription("check first element"));2532  }2533  /**2534   * Navigate and allow to perform assertions on the last element of the {@link Iterable} under test.2535   * <p>2536   * By default available assertions after {@code last()} are {@code Object} assertions, it is possible though to2537   * get more specific assertions if you create {@code IterableAssert} with either:2538   * <ul>2539   * <li>the element assert class, see: {@link Assertions#assertThat(Iterable, Class) assertThat(Iterable, element assert class)}</li>2540   * <li>an assert factory used that knows how to create elements assertion, see: {@link Assertions#assertThat(Iterable, AssertFactory) assertThat(Iterable, element assert factory)}</li>2541   * </ul>2542   * <p>2543   * Example: default {@code Object} assertions2544   * <pre><code class='java'> // default iterable assert =&gt; element assert is ObjectAssert2545   * Iterable&lt;TolkienCharacter&gt; hobbits = newArrayList(frodo, sam, pippin);2546   *2547   * // assertion succeeds, only Object assertions are available after last()2548   * assertThat(hobbits).last()2549   *                    .isEqualTo(pippin);2550   *2551   * // assertion fails2552   * assertThat(hobbits).last()2553   *                    .isEqualTo(frodo);</code></pre>2554   * <p>2555   * If you have created the Iterable assertion using an {@link AssertFactory} or the element assert class,2556   * you will be able to chain {@code last()} with more specific typed assertion.2557   * <p>2558   * Example: use of {@code String} assertions after {@code last()}2559   * <pre><code class='java'> Iterable&lt;String&gt; hobbits = newArrayList("Frodo", "Sam", "Pippin");2560   *2561   * // assertion succeeds2562   * // String assertions are available after last()2563   * assertThat(hobbits, StringAssert.class).last()2564   *                                        .startsWith("Pi")2565   *                                        .endsWith("in");2566   * // assertion fails2567   * assertThat(hobbits, StringAssert.class).last()2568   *                                        .startsWith("Fro");</code></pre>2569   *2570   * @return the assertion on the last element2571   * @throws AssertionError if the actual {@link Iterable} is empty.2572   * @since 2.5.0 / 3.5.02573   * @see #last(InstanceOfAssertFactory)2574   */2575  @CheckReturnValue2576  public ELEMENT_ASSERT last() {2577    return internalLast();2578  }2579  /**2580   * Navigate and allow to perform assertions on the last element of the {@link Iterable} under test.2581   * <p>2582   * The {@code assertFactory} parameter allows to specify an {@link InstanceOfAssertFactory}, which is used to get the2583   * assertions narrowed to the factory type.2584   * <p>2585   * Example: use of {@code String} assertions after {@code last(as(InstanceOfAssertFactories.STRING)}2586   * <pre><code class='java'> Iterable&lt;String&gt; hobbits = newArrayList("Frodo", "Sam", "Pippin");2587   *2588   * // assertion succeeds2589   * assertThat(hobbits).last(as(InstanceOfAssertFactories.STRING))2590   *                    .startsWith("Pip")2591   *                    .endsWith("pin");2592   * // assertion fails2593   * assertThat(hobbits).last(as(InstanceOfAssertFactories.STRING))2594   *                    .startsWith("Fro");2595   * // assertion fails because of wrong factory type2596   * assertThat(hobbits).last(as(InstanceOfAssertFactories.INTEGER))2597   *                    .isZero();</code></pre>2598   *2599   * @param <ASSERT>      the type of the resulting {@code Assert}2600   * @param assertFactory the factory which verifies the type and creates the new {@code Assert}2601   * @return a new narrowed {@link Assert} instance for assertions chaining on the last element2602   * @throws AssertionError if the actual {@link Iterable} is empty.2603   * @throws NullPointerException if the given factory is {@code null}2604   * @since 3.14.02605   */2606  @CheckReturnValue2607  public <ASSERT extends AbstractAssert<?, ?>> ASSERT last(InstanceOfAssertFactory<?, ASSERT> assertFactory) {2608    return internalLast().asInstanceOf(assertFactory);2609  }2610  private ELEMENT_ASSERT internalLast() {2611    isNotEmpty();2612    return toAssert(lastElement(), navigationDescription("check last element"));2613  }2614  private ELEMENT lastElement() {2615    if (actual instanceof List) {2616      @SuppressWarnings("unchecked")2617      List<? extends ELEMENT> list = (List<? extends ELEMENT>) actual;2618      return list.get(list.size() - 1);2619    }2620    Iterator<? extends ELEMENT> actualIterator = actual.iterator();2621    ELEMENT last = actualIterator.next();2622    while (actualIterator.hasNext()) {2623      last = actualIterator.next();2624    }2625    return last;2626  }2627  /**2628   * Navigate and allow to perform assertions on the chosen element of the {@link Iterable} under test.2629   * <p>2630   * By default available assertions after {@code element(index)} are {@code Object} assertions, it is possible though to2631   * get more specific assertions if you create {@code IterableAssert} with either:2632   * <ul>2633   * <li>the element assert class, see: {@link Assertions#assertThat(Iterable, Class) assertThat(Iterable, element assert class)}</li>2634   * <li>an assert factory used that knows how to create elements assertion, see: {@link Assertions#assertThat(Iterable, AssertFactory) assertThat(Iterable, element assert factory)}</li>2635   * </ul>2636   * <p>2637   * Example: default {@code Object} assertions2638   * <pre><code class='java'> // default iterable assert =&gt; element assert is ObjectAssert2639   * Iterable&lt;TolkienCharacter&gt; hobbits = newArrayList(frodo, sam, pippin);2640   *2641   * // assertion succeeds, only Object assertions are available after element(index)2642   * assertThat(hobbits).element(1)2643   *                    .isEqualTo(sam);2644   *2645   * // assertion fails2646   * assertThat(hobbits).element(1)2647   *                    .isEqualTo(pippin);</code></pre>2648   * <p>2649   * If you have created the Iterable assertion using an {@link AssertFactory} or the element assert class,2650   * you will be able to chain {@code element(index)} with more specific typed assertion.2651   * <p>2652   * Example: use of {@code String} assertions after {@code element(index)}2653   * <pre><code class='java'> Iterable&lt;String&gt; hobbits = newArrayList("Frodo", "Sam", "Pippin");2654   *2655   * // assertion succeeds2656   * // String assertions are available after element(index)2657   * assertThat(hobbits, StringAssert.class).element(1)2658   *                                        .startsWith("Sa")2659   *                                        .endsWith("am");2660   * // assertion fails2661   * assertThat(hobbits, StringAssert.class).element(1)2662   *                                        .startsWith("Fro");</code></pre>2663   *2664   * @param index the element's index2665   * @return the assertion on the given element2666   * @throws AssertionError if the given index is out of bound.2667   * @since 2.5.0 / 3.5.02668   * @see #element(int, InstanceOfAssertFactory)2669   */2670  @CheckReturnValue2671  public ELEMENT_ASSERT element(int index) {2672    return internalElement(index);2673  }2674  /**2675   * Navigate and allow to perform assertions on the chosen element of the {@link Iterable} under test.2676   * <p>2677   * The {@code assertFactory} parameter allows to specify an {@link InstanceOfAssertFactory}, which is used to get the2678   * assertions narrowed to the factory type.2679   * <p>2680   * Example: use of {@code String} assertions after {@code element(index, as(InstanceOfAssertFactories.STRING)}2681   * <pre><code class='java'> Iterable&lt;String&gt; hobbits = newArrayList("Frodo", "Sam", "Pippin");2682   *2683   * // assertion succeeds2684   * assertThat(hobbits).element(1, as(InstanceOfAssertFactories.STRING))2685   *                    .startsWith("Sa")2686   *                    .endsWith("am");2687   * // assertion fails2688   * assertThat(hobbits).element(1, as(InstanceOfAssertFactories.STRING))2689   *                    .startsWith("Fro");2690   * // assertion fails because of wrong factory type2691   * assertThat(hobbits).element(1, as(InstanceOfAssertFactories.INTEGER))2692   *                    .isZero();</code></pre>2693   *2694   * @param <ASSERT>      the type of the resulting {@code Assert}2695   * @param index         the element's index2696   * @param assertFactory the factory which verifies the type and creates the new {@code Assert}2697   * @return a new narrowed {@link Assert} instance for assertions chaining on the element at the given index2698   * @throws AssertionError if the given index is out of bound.2699   * @throws NullPointerException if the given factory is {@code null}2700   * @since 3.14.02701   */2702  @CheckReturnValue2703  public <ASSERT extends AbstractAssert<?, ?>> ASSERT element(int index, InstanceOfAssertFactory<?, ASSERT> assertFactory) {2704    return internalElement(index).asInstanceOf(assertFactory);2705  }2706  private ELEMENT_ASSERT internalElement(int index) {2707    isNotEmpty();2708    assertThat(index).describedAs(navigationDescription("check index validity"))2709                     .isBetween(0, IterableUtil.sizeOf(actual) - 1);2710    ELEMENT elementAtIndex;2711    if (actual instanceof List) {2712      @SuppressWarnings("unchecked")2713      List<? extends ELEMENT> list = (List<? extends ELEMENT>) actual;2714      elementAtIndex = list.get(index);2715    } else {2716      Iterator<? extends ELEMENT> actualIterator = actual.iterator();2717      for (int i = 0; i < index; i++) {2718        actualIterator.next();2719      }2720      elementAtIndex = actualIterator.next();2721    }2722    return toAssert(elementAtIndex, navigationDescription("element at index " + index));2723  }2724  /**2725   * Verifies that the {@link Iterable} under test contains a single element and allows to perform assertions that element.2726   * <p>2727   * This is a shorthand for <code>hasSize(1).first()</code>.2728   * <p>2729   * By default available assertions after {@code singleElement()} are {@code Object} assertions, it is possible though to2730   * get more specific assertions if you create {@code IterableAssert} with either:2731   * <ul>2732   * <li>the element assert class, see: {@link Assertions#assertThat(Iterable, Class) assertThat(Iterable, element assert class)}</li>2733   * <li>an assert factory used that knows how to create elements assertion, see: {@link Assertions#assertThat(Iterable, AssertFactory) assertThat(Iterable, element assert factory)}</li>2734   * <li>the general <code>assertThat(Iterable)</code> and narrow down the single element with an assert factory, see: {@link #singleElement(InstanceOfAssertFactory) singleElement(element assert factory)}</li>2735   * </ul>2736   * <p>2737   * Example: default {@code Object} assertions2738   * <pre><code class='java'> List&lt;String&gt; babySimpsons = list("Maggie");2739   *2740   * // assertion succeeds, only Object assertions are available after singleElement()2741   * assertThat(babySimpsons).singleElement()2742   *                         .isEqualTo("Maggie");2743   *2744   * // assertion fails2745   * assertThat(babySimpsons).singleElement()2746   *                         .isEqualTo("Homer");2747   *2748   * // assertion fails because list contains no elements2749   * assertThat(emptyList()).singleElement();2750   *2751   *2752   * // assertion fails because list contains more than one element2753   * List&lt;String&gt; simpsons = list("Homer", "Marge", "Lisa", "Bart", "Maggie");2754   * assertThat(simpsons).singleElement();</code></pre>2755   * <p>2756   * If you have created the Iterable assertion using an {@link AssertFactory} or the element assert class,2757   * you will be able to chain {@code singleElement()} with more specific typed assertion.2758   * <p>2759   * Example: use of {@code String} assertions after {@code singleElement()}2760   * <pre><code class='java'> List&lt;String&gt; babySimpsons = list("Maggie");2761   *2762   * // assertion succeeds2763   * // String assertions are available after singleElement()2764   * assertThat(babySimpsons, StringAssert.class).singleElement()2765   *                                             .startsWith("Mag");2766   *2767   * // InstanceOfAssertFactories.STRING is an AssertFactory for String assertions2768   * assertThat(babySimpsons, InstanceOfAssertFactories.STRING).singleElement()2769   *                                                           .startsWith("Mag");2770   * // better readability with import static InstanceOfAssertFactories.STRING and Assertions.as2771   * assertThat(babySimpsons, as(STRING)).singleElement()2772   *                                     .startsWith("Mag");2773   *2774   * // assertions fail2775   * assertThat(babySimpsons, StringAssert.class).singleElement()2776   *                                             .startsWith("Lis");2777   * // failure as the single element is not an int/Integer2778   * assertThat(babySimpsons, IntegerAssert.class).singleElement()2779   *                                              .startsWith("Lis");</code></pre>2780   *2781   * @return the assertion on the first element2782   * @throws AssertionError if the actual {@link Iterable} does not contain exactly one element.2783   * @since 3.17.02784   * @see #singleElement(InstanceOfAssertFactory)2785   */2786  @CheckReturnValue2787  public ELEMENT_ASSERT singleElement() {2788    return internalSingleElement();2789  }2790  /**2791   * Verifies that the {@link Iterable} under test contains a single element and allows to perform assertions on that element.<br>2792   * The assertions are strongly typed according to the given {@link AssertFactory} parameter.2793   * <p>2794   * This is a shorthand for <code>hasSize(1).first(assertFactory)</code>.2795   * <p>2796   * Example: use of {@code String} assertions after {@code singleElement(as(STRING)}2797   * <pre><code class='java'> import static org.assertj.core.api.InstanceOfAssertFactories.STRING;2798   * import static org.assertj.core.api.InstanceOfAssertFactories.INTEGER;2799   * import static org.assertj.core.api.Assertions.as; // syntactic sugar2800   *2801   * List&lt;String&gt; babySimpsons = list("Maggie");2802   *2803   * // assertion succeeds2804   * assertThat(babySimpsons).singleElement(as(STRING))2805   *                         .startsWith("Mag");2806   *2807   * // assertion fails2808   * assertThat(babySimpsons).singleElement(as(STRING))2809   *                         .startsWith("Lis");2810   *2811   * // assertion fails because of wrong factory type2812   * assertThat(babySimpsons).singleElement(as(INTEGER))2813   *                         .isZero();2814   *2815   * // assertion fails because list contains no elements2816   * assertThat(emptyList()).singleElement(as(STRING));2817   *2818   * // assertion fails because list contains more than one element2819   * List&lt;String&gt; simpsons = list("Homer", "Marge", "Lisa", "Bart", "Maggie");2820   * assertThat(simpsons).singleElement(as(STRING));</code></pre>2821   *2822   * @param <ASSERT>      the type of the resulting {@code Assert}2823   * @param assertFactory the factory which verifies the type and creates the new {@code Assert}2824   * @return a new narrowed {@link Assert} instance for assertions chaining on the single element2825   * @throws AssertionError if the actual {@link Iterable} does not contain exactly one element.2826   * @throws NullPointerException if the given factory is {@code null}.2827   * @since 3.17.02828   */2829  @CheckReturnValue2830  public <ASSERT extends AbstractAssert<?, ?>> ASSERT singleElement(InstanceOfAssertFactory<?, ASSERT> assertFactory) {2831    return internalSingleElement().asInstanceOf(assertFactory);2832  }2833  private ELEMENT_ASSERT internalSingleElement() {2834    iterables.assertHasSize(info, actual, 1);2835    return internalFirst();2836  }2837  protected abstract ELEMENT_ASSERT toAssert(ELEMENT value, String description);2838  protected String navigationDescription(String propertyName) {2839    String text = descriptionText();2840    if (Strings.isNullOrEmpty(text)) {2841      text = removeAssert(this.getClass().getSimpleName());2842    }2843    return text + " " + propertyName;2844  }2845  private static String removeAssert(String text) {2846    return text.endsWith(ASSERT) ? text.substring(0, text.length() - ASSERT.length()) : text;2847  }2848  /**2849   * Filters the iterable under test keeping only elements matching the given {@link Predicate}....

internalFirst

Using AI Code Generation

1public class Main {2    public static void main(String[] args) {3        List<Integer> list = new ArrayList<>();4        list.add(1);5        list.add(2);6        list.add(3);7        list.add(4);8        list.add(5);9        list.add(6);10        list.add(7);11        list.add(8);12        list.add(9);13        list.add(10);14        Assertions.assertThat(list).internalFirst().isEqualTo(1);15    }16}17	at org.junit.Assert.assertEquals(Assert.java:115)18	at org.junit.Assert.assertEquals(Assert.java:144)19	at org.assertj.core.api.AbstractAssert.isEqualTo(AbstractAssert.java:85)

internalFirst

Using AI Code Generation

1import static org.assertj.core.api.Assertions.*;2import java.util.ArrayList;3import java.util.Arrays;4import java.util.List;5import org.assertj.core.api.AbstractIterableAssert;6import org.assertj.core.api.Assertions;7import org.assertj.core.api.Condition;8import org.assertj.core.api.ObjectAssert;9import org.assertj.core.api.ObjectAssertFactory;10import org.assertj.core.api.ObjectAssertFactoryBase;11import org.assertj.core.api.SoftAssertions;12import org.assertj.core.api.SoftAssertionsProvider;13import org.assertj.core.api.ThrowableAssert;14import org.assertj.core.api.ThrowableAssertAlternative;15import org.assertj.core.api.ThrowableAssertBase;16import org.assertj.core.api.ThrowableAssertCatchClause;17import org.assertj.core.api.ThrowableAssertNoCause;18import org.assertj.core.api.ThrowableAssertNoCauseAlternative;19import org.assertj.core.api.ThrowableAssertThrownBy;20import org.assertj.core.api.ThrowableAssertThrownByAlternative;21import org.assertj.core.api.ThrowableAssertWithCause;22import org.assertj.core.api.ThrowableAssertWithCauseAlternative;23import org.assertj.core.api.ThrowableAssertWithCauseFactory;24import org.assertj.core.api.ThrowableAssertWithCauseFactoryBase;25import org.assertj.core.api.ThrowableAssertWithCauseProvider;26import org.assertj.core.api.ThrowableAssertWithCauseProviderBase;27import org.assertj.core.api.ThrowableAssertWithCauseProviderBaseNoCause;28import org.assertj.core.api.ThrowableAssertWithCauseProviderBaseWithCause;29import org.assertj.core.api.ThrowableAssertWithCauseProviderNoCause;30import org.assertj.core.api.ThrowableAssertWithCauseProviderWithCause;31import org.assertj.core.api.ThrowableAssertWithMessage;32import org.assertj.core.api.ThrowableAssertWithMessageAlternative;33import org.assertj.core.api.ThrowableAssertWithMessageFactory;34import org.assertj.core.api.ThrowableAssertWithMessageFactoryBase;35import org.assertj.core.api.ThrowableAssertWithMessageProvider;36import org.assertj.core.api.ThrowableAssertWithMessageProviderBase;37import org.assertj.core.api.ThrowableAssertWithMessageProviderNoCause;38import org.assertj.core.api.ThrowableAssertWithMessageProviderWithCause;39import org.assertj.core.api.ThrowableAssertWithMessageProviderWithCauseBase;40import org.assertj.core.api.ThrowableAssertWithMessageProviderWithCauseBaseNoCause;41import org.assertj.core.api.ThrowableAssertWithMessageProviderWithCauseBaseWithCause;42import org.assertj.core.api.ThrowableAssertWithMessageProviderWithCauseNoCause;43import org.assertj.core.api.ThrowableAssertWithMessageProviderWithCauseWithCause;44import org.assertj.core.api.Throwable

internalFirst

Using AI Code Generation

1assertThat(new ArrayList<>()).usingElementComparatorOnFields("name").containsExactly(new Person("John"), new Person("Jane"));2assertThat(new ArrayList<>()).usingElementComparatorOnFields("name").containsExactlyInAnyOrder(new Person("John"), new Person("Jane"));3assertThat(new ArrayList<>()).usingElementComparatorOnFields("name").containsExactlyInAnyOrderElementsOf(new ArrayList<>());4assertThat(new ArrayList<>()).usingElementComparatorOnFields("name").containsExactlyElementsOf(new ArrayList<>());5assertThat(new ArrayList<>()).usingElementComparatorOnFields("name").containsExactlyInAnyOrder(new Person("John"), new Person("Jane"));6assertThat(new ArrayList<>()).usingElementComparatorOnFields("name").containsExactlyInAnyOrderElementsOf(new ArrayList<>());7assertThat(new ArrayList<>()).usingElementComparatorOnFields("name").containsExactlyElementsOf(new ArrayList<>());8assertThat(new ArrayList<>()).usingElementComparatorOnFields("name").containsExactlyInAnyOrder(new Person("John"), new Person("Jane"));9assertThat(new ArrayList<>()).usingElementComparatorOnFields("name").containsExactlyInAnyOrderElementsOf(new ArrayList<>());10assertThat(new ArrayList<>()).usingElementComparatorOnFields("name").containsExactlyElementsOf(new ArrayList<>());11assertThat(new ArrayList<>()).usingElementComparatorOnFields("name").containsExactlyInAnyOrder(new Person("John"), new Person("Jane"));12assertThat(new ArrayList<>()).usingElementComparatorOnFields("name").containsExactlyInAnyOrderElementsOf(new ArrayList<>());

internalFirst

Using AI Code Generation

1import org.assertj.core.api.SoftAssertions;2import org.assertj.core.api.SoftAssertionError;3import java.util.ArrayList;4import java.util.List;5public class AssertJSoftAssertions {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        list.add(4);12        list.add(5);13        SoftAssertions softly = new SoftAssertions();14        softly.assertThat(list).internalFirst().isEqualTo(1);15        softly.assertThat(list).internalFirst().isEqualTo(2);16        softly.assertThat(list).internalFirst().isEqualTo(3);17        softly.assertThat(list).internalFirst().isEqualTo(4);18        softly.assertThat(list).internalFirst().isEqualTo(5);19        try {20            softly.assertAll();21        } catch (SoftAssertionError e) {22            System.out.println(e.getMessage());23        }24    }25}

internalFirst

Using AI Code Generation

1assertThat( Arrays.asList(1, 2, 3) ).usingElementComparatorOnFields("name").contains( new Person("John", 30) );2assertThat( Arrays.asList(1, 2, 3) ).usingElementComparatorOnFields("name").containsExactly( new Person("John", 30) );3assertThat( Arrays.asList(1, 2, 3) ).usingElementComparatorOnFields("name").containsOnly( new Person("John", 30) );4assertThat( Arrays.asList(1, 2, 3) ).usingElementComparatorOnFields("name").containsOnlyOnce( new Person("John", 30) );5assertThat( Arrays.asList(1, 2, 3) ).usingElementComparatorOnFields("name").containsSequence( new Person("John", 30) );6assertThat( Arrays.asList(1, 2, 3) ).usingElementComparatorOnFields("name").containsSubsequence( new Person("John", 30) );7assertThat( Arrays.asList(1, 2, 3) ).usingElementComparatorOnFields("name").doesNotContain( new Person("John", 30) );8assertThat( Arrays.asList(1, 2, 3) ).usingElementComparatorOnFields("name").doesNotContainNull();9assertThat( Arrays.asList(1, 2, 3) ).usingElementComparatorOnFields("name").doesNotHaveDuplicates();10assertThat( Arrays.asList(1, 2, 3) ).usingElementComparatorOnFields("name").endsWith( new Person("John", 30) );11assertThat( Arrays.asList(1, 2, 3) ).usingElementComparatorOnFields("name").isSubsetOf( new Person("John", 30) );12assertThat( Arrays.asList(1, 2, 3) ).usingElementComparatorOnFields("name").startsWith( new Person("John", 30) );13assertThat( Arrays.asList(1, 2, 3) ).usingDefaultComparator().contains( new Person("John", 30) );14assertThat( Arrays.asList(1, 2, 3) ).usingDefaultComparator().containsExactly( new Person("John", 30) );15assertThat( Arrays.asList(1, 2, 3) ).usingDefaultComparator().containsOnly( new Person("John", 30)

internalFirst

Using AI Code Generation

1public SELF internalFirst(Predicate<? super ELEMENT> predicate) {2    return internalFirst(predicate, "first element");3}4public SELF first(Predicate<? super ELEMENT> predicate) {5    assertFirst(predicate);6    return myself;7}8public SELF assertFirst(Predicate<? super ELEMENT actual> predicate) {9    assertNotNull(info, actual);10    if (actual.isEmpty()) {11        throw failures.failure(info, shouldBeNotEmpty(actual));12    }13    if (!predicate.test(actual.get(0))) {14        throw failures.failure(info, shouldBeFirst(actual, predicate));15    }16    return myself;17}18public SELF assertFirst(Predicate<? super ELEMENT actual> predicate, String description) {19    assertNotNull(info, actual);20    if (actual.isEmpty()) {21        throw failures.failure(info, shouldBeNotEmpty(actual));22    }23    if (!predicate.test(actual.get(0))) {24        throw failures.failure(info, shouldBeFirst(actual, predicate, description));25    }26    return myself;27}28public SELF assertFirst(Predicate<? super ELEMENT actual> predicate, String description, Object... args) {29    assertNotNull(info, actual);30    if (actual.isEmpty()) {31        throw failures.failure(info, shouldBeNotEmpty(actual));32    }33    if (!predicate.test(actual.get(0))) {34        throw failures.failure(info, shouldBeFirst(actual, predicate, description, args));35    }36    return myself;37}38public SELF assertFirst(Predicate<? super ELEMENT actual> predicate, String description, Object arg0, Object arg1) {39    assertNotNull(info, actual);40    if (actual.isEmpty()) {41        throw failures.failure(info, shouldBeNotEmpty(actual));42    }43    if (!predicate.test(actual.get(0))) {44        throw failures.failure(info, shouldBeFirst(actual, predicate, description, arg0, arg1));45    }46    return myself;47}48public SELF assertFirst(Predicate<? super ELEMENT actual> predicate, String description, Object arg0, Object arg1, Object arg2) {49    assertNotNull(info, actual);50    if (actual.isEmpty()) {51        throw failures.failure(info, shouldBeNotEmpty(actual));52    }53    if (!predicate.test(actual.get(0))) {

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