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How to use Predicates method of org.assertj.core.internal.Predicates class

Best Assertj code snippet using org.assertj.core.internal.Predicates.Predicates

Source:AssertJChainSimplificationCheck.java

...60        predicates.add(nextPredicate);61      }62      nextPredicateOpt = MethodTreeUtils.consecutiveMethodInvocation(nextPredicate);63    }64    boolean wasIssueRaised = checkPredicatesForSimplification(65      predicates, CONTEXT_FREE_SIMPLIFIERS, SimplifierWithoutContext::simplify,66      (predicate, simplification) -> createIssueBuilder(predicate, simplification).report()67    );68    // We do not continue when we have already raised an issue to avoid potentially conflicting issue reports. If we69    // have more than one predicate we also avoid continuing to avoid FP on cases such as:70    // assertThat(Integer.valueOf(1).compareTo(2)).isGreaterThan(1).isLessThan(10)71    // We also want to ignore all assertion chains that contain methods besides predicates and messages, such as those72    // that change the assertion context, as that level of complexity is not handled by this rule. The extraction73    // function is such an example:74    // assertThat(frodo).extracting("name", as(InstanceOfAssertFactories.STRING)).startsWith("Fro");75    if (wasIssueRaised || predicates.size() > 1) {76      return;77    }78    checkPredicatesForSimplification(79      predicates, SIMPLIFIERS_WITH_CONTEXT, (simplifier, predicate) -> simplifier.simplify(subjectMit, predicate),80      (predicate, simplification) -> createIssueBuilder(predicate, simplification)81        .withSecondaries(new JavaFileScannerContext.Location("This can be simplified", subjectMit.arguments().get(0)))82        .report()83    );84  }85  private InternalJavaIssueBuilder createIssueBuilder(MethodInvocationTree predicate, AssertJChainSimplificationIndex.Simplification simplification) {86    InternalJavaIssueBuilder builder = QuickFixHelper.newIssue(context)87      .forRule(this)88      .onTree(ExpressionUtils.methodName(predicate))89      .withMessage(ISSUE_MESSAGE_FORMAT_STRING, simplification.getReplacement());90    simplification.getQuickFix().ifPresent(builder::withQuickFixes);91    return builder;92  }93  /**94   * @return {@code true} when an issue was reported, {@code false} otherwise.95   */96  private static <T> boolean checkPredicatesForSimplification(97    List<MethodInvocationTree> predicates,98    Map<String, List<T>> simplifiers,99    BiFunction<T, MethodInvocationTree, Optional<AssertJChainSimplificationIndex.Simplification>> simplificationMethod,100    BiConsumer<MethodInvocationTree, AssertJChainSimplificationIndex.Simplification> reportingMethod) {101    AssertJChainSimplificationHelper.BooleanFlag issueRaised = new AssertJChainSimplificationHelper.BooleanFlag();102    predicates.forEach(predicate -> {103      String predicateName = ExpressionUtils.methodName(predicate).name();104      if (simplifiers.containsKey(predicateName)) {105        simplifiers.get(predicateName).stream()106          .map(simplifier -> simplificationMethod.apply(simplifier, predicate))107          .filter(Optional::isPresent)108          .map(Optional::get)109          .findFirst()110          .ifPresent(replacement -> {...

Source:Predicates.java

...13package org.assertj.core.internal;14import static org.assertj.core.util.Preconditions.checkNotNull;15import java.util.function.Predicate;16import org.assertj.core.util.VisibleForTesting;17public class Predicates {18  private static final Predicates INSTANCE = new Predicates();19  /**20   * Returns the singleton instance of this class.21   * @return the singleton instance of this class.22   */23  public static Predicates instance() {24    return INSTANCE;25  }26  @VisibleForTesting27  Failures failures = Failures.instance();28  @VisibleForTesting29  Predicates() {}30  /**31   * Asserts the the given <code>{@link Predicate}</code> is not null.32   * @param predicate the given {@code Predicate}.33   * @throws NullPointerException if the given {@code Predicate} is {@code null}.34   */35  public void assertIsNotNull(Predicate<?> predicate) {36    checkNotNull(predicate, "The predicate to evaluate should not be null");37  }38}...

Predicates

Using AI Code Generation

1public class PredicatesTest {2    public void test() {3        String[] array = {"a", "b", "c"};4        assertThat(array).haveAtLeastOne(Predicates.instanceOf(String.class));5    }6}7public class PredicatesTest {8    public void test() {9        String[] array = {"a", "b", "c"};10        assertThat(array).haveAtLeastOne(Predicates.instanceOf(String.class));11    }12}13    at org.assertj.core.api.AbstractIterableAssert.hasAtLeastOneElementOfType(AbstractIterableAssert.java:392)14    at org.assertj.core.api.AbstractIterableAssert.hasAtLeastOneElementOfType(AbstractIterableAssert.java:377)15    at org.assertj.core.api.AbstractIterableAssert.hasAtLeastOneElementOfType(AbstractIterableAssert.java:42)16    at org.assertj.core.api.AbstractIterableAssert.haveAtLeastOne(AbstractIterableAssert.java:370)17    at org.assertj.core.api.AbstractIterableAssert.haveAtLeastOne(AbstractIterableAssert.java:35)18    at PredicatesTest.test(PredicatesTest.java:7)19    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)20    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)21    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)22    at java.lang.reflect.Method.invoke(Method.java:498)23    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)24    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)25    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)26    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)27    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)

Predicates

Using AI Code Generation

1public class 1 {2    public static void main(String[] args) {3        Predicates predicates = new Predicates();4        Object object = null;5        System.out.println(predicates.isNotNull().test(object));6    }7}8Java String isBlank() Method9Java String strip() Method10Java String stripLeading() Method11Java String stripTrailing() Method12Java String lines() Method13Java String repeat() Method14Java String transform() Method15Java String join() Method16Java String format() Method17Java String indent() Method18Java String translateEscapes() Method19Java String toCodePoints() Method20Java String chars() Method21Java String codePoints() Method22Java String toUpperCase() Method23Java String toLowerCase() Method24Java String toCharArray() Method25Java String intern() Method26Java String compareTo() Method27Java String compareToIgnoreCase() Method28Java String concat() Method29Java String contains() Method30Java String contentEquals() Method31Java String endsWith() Method32Java String equals() Method33Java String equalsIgnoreCase() Method34Java String getBytes() Method35Java String getChars() Method36Java String hashCode() Method37Java String indexOf() Method38Java String isEmpty() Method39Java String lastIndexOf() Method40Java String length() Method41Java String matches() Method42Java String offsetByCodePoints() Method43Java String regionMatches() Method44Java String replace() Method45Java String replaceAll() Method46Java String replaceFirst() Method47Java String split() Method48Java String startsWith() Method49Java String subSequence() Method50Java String substring() Method51Java String toCharArray() Method52Java String toString() Method53Java String trim()

Predicates

Using AI Code Generation

1import org.assertj.core.api.Assertions;2import org.assertj.core.api.Condition;3import org.assertj.core.internal.Predicates;4import org.junit.Test;5public class PredicatesTest {6    public void testPredicates() {7        Condition<Object> nullCondition = new Condition<>(Predicates::isNull, "is null");8        Assertions.assertThat(null).is(nullCondition);9    }10}11import org.assertj.core.api.Assertions;12import org.assertj.core.api.Condition;13import org.assertj.core.internal.Predicates;14import org.junit.Test;15public class PredicatesTest {16    public void testPredicates() {17        Condition<Object> nullCondition = new Condition<>(Predicates.not(Predicates::isNull), "is not null");18        Assertions.assertThat(null).is(nullCondition);19    }20}21import org.assertj.core.api.Assertions;22import org.assertj.core.api.Condition;23import org.assertj.core.internal.Predicates;24import org.junit.Test;25public class PredicatesTest {26    public void testPredicates() {27        Condition<Object> nullCondition = new Condition<>(Predicates.instanceOf(String.class), "is instance of String");28        Assertions.assertThat(null).is(nullCondition);29    }30}

Predicates

Using AI Code Generation

1import org.assertj.core.internal.Predicates;2import org.junit.Test;3import static org.assertj.core.api.Assertions.assertThat;4public class AssertJExample1 {5   public void test() {6      assertThat(Predicates.areNotEqual(new Object(), new Object())).isTrue();7   }8}9at org.junit.Assert.assertEquals(Assert.java:115)10at org.junit.Assert.assertEquals(Assert.java:144)11at org.assertj.core.api.AbstractBooleanAssert.isEqualTo(AbstractBooleanAssert.java:89)12at org.assertj.core.api.AbstractBooleanAssert.isTrue(AbstractBooleanAssert.java:101)13at AssertJExample1.test(AssertJExample1.java:13)14at org.assertj.core.api.AbstractBooleanAssert.isEqualTo(AbstractBooleanAssert.java:89)15at org.assertj.core.api.AbstractBooleanAssert.isTrue(AbstractBooleanAssert.java:101)16at AssertJExample1.test(AssertJExample1.java:13)

Predicates

Using AI Code Generation

1import static org.assertj.core.api.Assertions.assertThat;2import static org.assertj.core.api.Assertions.assertThatThrownBy;3import static org.assertj.core.api.Assertions.catchThrowable;4import static org.assertj.core.internal.Predicates.instanceOf;5import org.junit.Test;6public class AssertJTest {7	public void test() {8		assertThat("Test").is(instanceOf(String.class));9		assertThatThrownBy(() -> assertThat("Test").is(instanceOf(Integer.class)))10				.hasMessage("Expecting actual:%n" + "  \"Test\"%n" + "to be an instance of:%n" + "  <java.lang.Integer>%n"11						+ "but was instance of:%n" + "  <java.lang.String>.");12	}13}14	at org.junit.Assert.assertEquals(Assert.java:115)15	at org.junit.Assert.assertEquals(Assert.java:144)16	at org.assertj.core.api.AbstractThrowableAssert.hasMessage(AbstractThrowableAssert.java:100)17	at org.assertj.core.api.Assertions_assertThat_with_Throwable_Test.assert_with_Throwable(Assertions_assertThat_with_Throwable_Test.java:51)18	at org.assertj.core.api.Assertions_assertThat_with_Throwable_Test.should_allow_assertion_on_throwable_caught_by_catchThrowable(Assertions_assertThat_with_Throwable_Test.java:37)19	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)20	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)21	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)22	at java.lang.reflect.Method.invoke(Method.java:498)23	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)24	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)25	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)26	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)27	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)

Predicates

Using AI Code Generation

1import org.assertj.core.api.*;2import org.assertj.core.internal.*;3class Main {4  public static void main(String[] args) {5    AssertionInfo info = new AssertionInfo();6    Object obj = new Object();7    boolean result = Predicates.instance().isPredicate(info, obj);8    System.out.println("Result: " + result);9  }10}

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