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How to use run method of org.junit.function.Interface ThrowingRunnable class

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

Source:ThrowingRunnable.java

...8 *9 * @since 4.1310 */11public interface ThrowingRunnable {12 void run() throws Throwable;13}...

run

Using AI Code Generation

1package com.test;2import org.junit.Test;3import org.junit.function.ThrowingRunnable;4import static org.junit.Assert.*;5public class TestThrowingRunnable {6    public void testThrowingRunnable() {7        ThrowingRunnable runnable = new ThrowingRunnable() {8            public void run() throws Throwable {9                throw new Exception("This is an exception");10            }11        };12        assertThrows(Exception.class, runnable);13    }14}15	at org.junit.Assert.assertEquals(Assert.java:115)16	at org.junit.Assert.assertEquals(Assert.java:144)17	at org.junit.Assert.assertThrows(Assert.java:1064)18	at org.junit.Assert.assertThrows(Assert.java:1048)19	at com.test.TestThrowingRunnable.testThrowingRunnable(TestThrowingRunnable.java:12)20package com.test;21import org.junit.Test;22import static org.junit.Assert.*;23public class TestAssertThrows {24    public void testAssertThrows() {25        String str = "abc";26        assertThrows(NumberFormatException.class, () -> {27            Integer num = Integer.parseInt(str);28        });29    }30}31	at org.junit.Assert.assertEquals(Assert.java:115)32	at org.junit.Assert.assertEquals(Assert.java:144)33	at org.junit.Assert.assertThrows(Assert.java:1064)34	at org.junit.Assert.assertThrows(Assert.java:1048)35	at com.test.TestAssertThrows.testAssertThrows(TestAssertThrows.java:10)

run

Using AI Code Generation

1    public void testGetUser() {2        List<User> users = userRepo.findAll();3        User user = userRepo.findById(1).get();4        assertTrue(users.contains(user));5        assertFalse(users.contains(new User()));6        assertFalse(users.contains(new User(2, "name", "password")));7        assertFalse(users.contains(new User(2, "name", "password", "email")));8        assertFalse(users.contains(new User(2, "name", "password", "email", "phone")));9        assertFalse(users.contains(new User(2, "name", "password", "email", "phone", "address")));10        assertFalse(users.contains(new User(2, "name", "password", "email", "phone", "address", "city")));11        assertFalse(users.contains(new User(2, "name", "password", "email", "phone", "address", "city", "state")));12        assertFalse(users.contains(new User(2, "name", "password", "email", "phone", "address", "city", "state", "zip")));13        assertFalse(users.contains(new User(2, "name", "password", "email", "phone", "address", "city", "state", "zip", "country")));14        assertFalse(users.contains(new User(2, "name", "password", "email", "phone", "address", "city", "state", "zip", "country", "shippingAddress")));15        assertFalse(users.contains(new User(2, "name", "password", "email", "phone", "address", "city", "state", "zip", "country", "shippingAddress", "shippingCity")));16        assertFalse(users.contains(new User

run

Using AI Code Generation

1import org.junit.Assert;2import org.junit.function.ThrowingRunnable;3public class Test {4    public static void main(String[] args) {5        ThrowingRunnable tr = () -> {6            throw new Exception("Exception thrown");7        };8        try {9            tr.run();10        } catch (Exception e) {11            System.out.println("Exception caught");12        }13        Assert.assertThrows(Exception.class, tr);14    }15}16at org.junit.Assert.assertEquals(Assert.java:115)17at org.junit.Assert.assertEquals(Assert.java:144)18at org.junit.Assert.assertThrows(Assert.java:1128)19at org.junit.Assert.assertThrows(Assert.java:1116)20at Test.main(Test.java:20)

run

Using AI Code Generation

1public static void assertThrows(Runnable r, Class<? extends Exception> e) {2    try {3        r.run();4    } catch (Exception ex) {5        if (e.isInstance(ex)) {6            return;7        }8        throw new RuntimeException("Expected exception " + e.getName() + " but got " + ex.getClass().getName());9    }10    throw new RuntimeException("Expected exception " + e.getName());11}12public void testInvalidArgument() {13    assertThrows(() -> {new Calculator().add("1","2");}, IllegalArgumentException.class);14}15In this article, we have seen how to write unit tests for a method that throws an exception when the method is called with invalid arguments. The assertThrows()

JUnit Tutorial:

LambdaTest also has a detailed JUnit tutorial explaining its features, importance, advanced use cases, best practices, and more to help you get started with running your automation testing scripts.

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.