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How to use Interface ThrowingRunnable class of org.junit.function package

Best junit code snippet using org.junit.function.Interface ThrowingRunnable

Source:ITestExecutable.java

1/*2 * Copyright (c) 2010-2020 BSI Business Systems Integration AG.3 * All rights reserved. This program and the accompanying materials4 * are made available under the terms of the Eclipse Public License v1.05 * which accompanies this distribution, and is available at6 * http://www.eclipse.org/legal/epl-v10.html7 *8 * Contributors:9 *     BSI Business Systems Integration AG - initial API and implementation10 */11package org.eclipse.scout.rt.testing.platform.util;12import org.junit.function.ThrowingRunnable;13/**14 * Functional interface allowing lambda expressions that are throwing any {@link Throwable}.15 * @deprecated Use {@link ThrowingRunnable} instead. Will be removed in Scout 12.16 */17@Deprecated18@FunctionalInterface19public interface ITestExecutable {20  void execute() throws Throwable; // NOSONAR squid:S118121}...

Source:ThrowingRunnable.java

1package org.junit.function;2/**3 * This interface facilitates the use of4 * {@link org.junit.Assert#assertThrows(Class, ThrowingRunnable)} from Java 8. It allows method5 * references to void methods (that declare checked exceptions) to be passed directly into6 * {@code assertThrows}7 * without wrapping. It is not meant to be implemented directly.8 *9 * @since 4.1310 */11public interface ThrowingRunnable {12    void run() throws Throwable;13}...

Interface ThrowingRunnable

Using AI Code Generation

1import static org.junit.Assert.assertEquals;2import static org.junit.Assert.fail;3import java.util.Arrays;4import java.util.Collection;5import java.util.HashSet;6import java.util.Set;7import org.junit.Test;8import org.junit.runner.RunWith;9import org.junit.runners.Parameterized;10import org.junit.runners.Parameterized.Parameters;11@RunWith(Parameterized.class)12public class TestSet {13	private Set<String> set;14	public TestSet(Set<String> set) {15		this.set = set;16	}17	public static Collection<Object[]> getParameters() {18		return Arrays.asList(new Object[][] {19			{ new HashSet<String>()

Interface ThrowingRunnable

Using AI Code Generation

1package org.junit.function;2public interface ThrowingRunnable {3    void run() throws Throwable;4}5package org.junit.function;6public interface ThrowingRunnable {7    void run() throws Throwable;8}9package org.junit.function;10public interface ThrowingRunnable {11    void run() throws Throwable;12}13package org.junit.function;14public interface ThrowingRunnable {15    void run() throws Throwable;16}17package com.javatpoint;18import java.util.*;19import org.junit.*;20import org.junit.function.*;21import static org.junit.Assert.*;22public class TestJunit4 {23   @Test(expected = NullPointerException.class)24   public void testException() {25      List list = new ArrayList();26      list.get(0);27   }28   @Test(expected = NullPointerException.class)29   public void testException() {30      List list = new ArrayList();31      list.get(0);32   }33   @Test(expected = NullPointerException.class)34   public void testException() {35      List list = new ArrayList();36      list.get(0);37   }38   @Test(expected = NullPointerException.class)39   public void testException() {40      List list = new ArrayList();41      list.get(0);42   }43}

Interface ThrowingRunnable

Using AI Code Generation

1import org.junit.function.ThrowingRunnable;2import static org.junit.Assert.assertThrows;3import java.util.ArrayList;4import java.util.List;5import java.util.stream.Collectors;6import java.util.stream.Stream;7import org.junit.Test;8public class TestJunit5 {9public void test() {10Stream<String> stream = Stream.of("one", "two", "three", "four", "five");11List<String> list = stream.collect(Collectors.toList());12List<String> newList = new ArrayList<>();13newList.add("six");14newList.add("seven");15newList.addAll(list);16System.out.println("New List: " + newList);17System.out.println("List: " + list);18List<String> anotherList = new ArrayList<>();19anotherList.add("eight");20anotherList.add("nine");21newList.addAll(anotherList);22System.out.println("New List: " + newList);23System.out.println("List: " + list);24newList.addAll(list);25System.out.println("New List: " + newList);26System.out.println("List: " + list);27}28}

Interface ThrowingRunnable

Using AI Code Generation

1import org.junit.function.ThrowingRunnable;2public class TestJUnitFunctionPackage {3    public static void main(String[] args) {4        try {5            runTest();6        } catch (Throwable e) {7            e.printStackTrace();8        }9    }10    public static void runTest() throws Throwable {11        ThrowingRunnable runnable = new ThrowingRunnable() {12            public void run() throws Throwable {13                System.out.println("ThrowingRunnable");14            }15        };16        runnable.run();17    }18}

Interface ThrowingRunnable

Using AI Code Generation

1import org.junit.function.ThrowingRunnable;2import static org.junit.Assert.assertThrows;3public class AssertThrowsExample {4    public void testAssertThrows() {5        assertThrows(IllegalArgumentException.class, new ThrowingRunnable() {6            public void run() throws Throwable {7                throw new IllegalArgumentException();8            }9        });10    }11}12org.junit.Assert.assertThrows(AssertThrowsExample.java:13)13org.junit.Assert.assertThrows(AssertThrowsExample.java:13)14assertThrows(Class<? extends Throwable> expectedType, Executable executable)15import org.junit.jupiter.api.function.Executable;16import static org.junit.jupiter.api.Assertions.assertThrows;17public class AssertThrowsExample {18    public void testAssertThrows() {19        assertThrows(IllegalArgumentException.class, () -> {20            throw new IllegalArgumentException();21        });22    }23}24rule.expect(Class<? extends Throwable> expected)25import org.junit.Rule;26import org.junit.Test;27import org.junit.rules.ExpectedException;28public class ExpectedExceptionExample {29    public ExpectedException thrown = ExpectedException.none();30    public void testExpectedException() {31        thrown.expect(IllegalArgumentException.class);32        throw new IllegalArgumentException();33    }34}35JUnit 5 introduced the assertThrows() method to assert that a specific exception is thrown. It returns the exception object

Interface ThrowingRunnable

Using AI Code Generation

1import org.junit.function.ThrowingRunnable;2import org.junit.runner.RunWith;3import org.junit.runners.JUnit4;4import org.junit.runners.Parameterized;5import org.junit.runners.Parameterized.Parameters;6import org.junit.runners.Parameterized.Parameter;7import org.junit.runners.Parameterized.UseParametersRunnerFactory;8import org.junit.runners.ParameterizedWithNames;9import org.junit.runners.ParameterizedTest;10import org.junit.runners.ParameterizedTestFactory;11import org.junit.runners.ParameterizedTestFactory.ParameterizedTestFactoryBuilder;12import org.junit.runners.ParameterizedTestFactory.ParameterizedTestFactoryBuilder.ParameterizedTestFactoryBuilderWithMethod;13import org.junit.runners.ParameterizedTestFactory.ParameterizedTestFactoryBuilder.ParameterizedTestFactoryBuilderWithMethod.ParameterizedTestFactoryBuilderWithMethodWithParameters;14import org.junit.runners.ParameterizedTestFactory.ParameterizedTestFactoryBuilder.ParameterizedTestFactoryBuilderWithMethod.ParameterizedTestFactoryBuilderWithMethodWithParameters.ParameterizedTestFactoryBuilderWithMethodWithParametersWithParametersSupplier;15import org.junit.runners.ParameterizedTestFactory.ParameterizedTestFactoryBuilder.ParameterizedTestFactoryBuilderWithMethod.ParameterizedTestFactoryBuilderWithMethodWithParameters.ParameterizedTestFactoryBuilderWithMethodWithParametersWithParametersSupplier.ParameterizedTestFactoryBuilderWithMethodWithParametersWithParametersSupplierWithParameters;16import org.junit.runners.ParameterizedTestFactory.ParameterizedTestFactoryBuilder

Source: Is there a way to make Runnable's run() throw an exception?

1public static void main(String[] args){2        HashMap<String,Integer> hashMap = new HashMap<>();3        hashMap.put("First",1);// First ---> 1 is put first in the map4        hashMap.put("Second",2);//Second ---> 2 is put second in the map5        hashMap.put("Third",3); // Third--->3 is put third in the map6        for(Map.Entry<String,Integer> entry : hashMap.entrySet())7        {8            System.out.println(entry.getKey()+"--->"+entry.getValue());9        }10    }11

Source:Is there a way to make Runnable's run() throw an exception?

public static void main(String[] args){
        HashMap<String,Integer> hashMap = new HashMap<>();
        hashMap.put("First",1);// First ---> 1 is put first in the map
        hashMap.put("Second",2);//Second ---> 2 is put second in the map
        hashMap.put("Third",3); // Third--->3 is put third in the map
        for(Map.Entry<String,Integer> entry : hashMap.entrySet())
        {
            System.out.println(entry.getKey()+"--->"+entry.getValue());
        }
    }

JUnit Tutorial:

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JUnit Tutorial Chapters:

Here are the detailed JUnit testing chapters to help you get started:

Importance of Unit testing - Learn why Unit testing is essential during the development phase to identify bugs and errors.
Top Java Unit testing frameworks - Here are the upcoming JUnit automation testing frameworks that you can use in 2023 to boost your unit testing.
What is the JUnit framework
Why is JUnit testing important - Learn the importance and numerous benefits of using the JUnit testing framework.
Features of JUnit - Learn about the numerous features of JUnit and why developers prefer it.
JUnit 5 vs. JUnit 4: Differences - Here is a complete comparison between JUnit 5 and JUnit 4 testing frameworks.
Setting up the JUnit environment - Learn how to set up your JUnit testing environment.
Getting started with JUnit testing - After successfully setting up your JUnit environment, this chapter will help you get started with JUnit testing in no time.
Parallel testing with JUnit - Parallel Testing can be used to reduce test execution time and improve test efficiency. Learn how to perform parallel testing with JUnit.
Annotations in JUnit - When writing automation scripts with JUnit, we can use JUnit annotations to specify the type of methods in our test code. This helps us identify those methods when we run JUnit tests using Selenium WebDriver. Learn in detail what annotations are in JUnit.
Assertions in JUnit - Assertions are used to validate or test that the result of an action/functionality is the same as expected. Learn in detail what assertions are and how to use them while performing JUnit testing.
Parameterization in JUnit - Parameterized Test enables you to run the same automated test scripts with different variables. By collecting data on each method's test parameters, you can minimize time spent on writing tests. Learn how to use parameterization in JUnit.
Nested Tests In JUnit 5 - A nested class is a non-static class contained within another class in a hierarchical structure. It can share the state and setup of the outer class. Learn about nested annotations in JUnit 5 with examples.
Best practices for JUnit testing - Learn about the best practices, such as always testing key methods and classes, integrating JUnit tests with your build, and more to get the best possible results.
Advanced Use Cases for JUnit testing - Take a deep dive into the advanced use cases, such as how to run JUnit tests in Jupiter, how to use JUnit 5 Mockito for Unit testing, and more for JUnit testing.