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How to use BlockJUnit4RunnerWithParametersFactory class of org.junit.runners.parameterized package

Best junit code snippet using org.junit.runners.parameterized.BlockJUnit4RunnerWithParametersFactory

BlockJUnit4RunnerWithParametersFactory

Using AI Code Generation

1package com.automationintesting.unit;2import org.junit.Test;3import org.junit.runner.RunWith;4import org.junit.runners.Parameterized;5import org.junit.runners.Parameterized.Parameters;6import java.util.Arrays;7import java.util.Collection;8import static org.junit.Assert.assertEquals;9@RunWith(Parameterized.class)10public class ParameterisedTest {11    private int expected;12    private int valueOne;13    private int valueTwo;14    public static Collection<Integer[]> getTestParameters() {15        return Arrays.asList(new Integer[][] {16                { 3, 1, 2 },17                { 4, 2, 2 },18                { 5, 3, 2 }19        });20    }21    public ParameterisedTest(int expected, int valueOne, int valueTwo) {22        this.expected = expected;23        this.valueOne = valueOne;24        this.valueTwo = valueTwo;25    }26    public void sum() {27        Calculator calculator = new Calculator();28        assertEquals(expected, calculator.add(valueOne, valueTwo));29    }30}

BlockJUnit4RunnerWithParametersFactory

Using AI Code Generation

1import org.junit.runner.RunWith;2import org.junit.runners.Parameterized;3import org.junit.runners.Parameterized.Parameters;4import java.util.Arrays;5import java.util.Collection;6@RunWith(Parameterized.class)7public class TestClass {8    private int input;9    private int expected;10    public TestClass(int input, int expected) {11        this.input = input;12        this.expected = expected;13    }14    public static Collection<Object[]> data() {15        Object[][] data = new Object[][]{ { 1, 1 }, { 2, 2 }, { 3, 3 }, { 4, 5 } };16        return Arrays.asList(data);17    }18}19JUnit provides some useful annotations to run tests. For example, @Test(expected=Exception.class) annotation is used to specify expected exception for test method. Similarly, @Test(timeout=100) annotation is used to specify timeout

BlockJUnit4RunnerWithParametersFactory

Using AI Code Generation

1import org.junit.runners.Parameterized;2import org.junit.runners.Parameterized.Parameters;3import org.junit.runners.Parameterized.Parameter;4import org.junit.runners.Parameterized.UseParametersRunnerFactory;5import org.junit.runner.RunWith;6import org.junit.Test;7import static org.junit.Assert.assertEquals;8import java.util.Arrays;9import java.util.Collection;10@RunWith(Parameterized.class)11@UseParametersRunnerFactory(BlockJUnit4RunnerWithParametersFactory.class)12public class TestClass {13@Parameter(0)14public int m1;15@Parameter(1)16public int m2;17@Parameter(2)18public int result;19public static Collection<Object[]> data() {20Object[][] data = new Object[][] { { 1, 2, 3 }, { 5, 3, 8 }, { 121, 4, 125 }, { 11, 5, 16 } };21return Arrays.asList(data);22}23public void testAdd() {24assertEquals(result, m1 + m2);25}26}27[INFO] --- maven-surefire-plugin:2.20.1:test (default-test) @ junit-4.12-tests ---28[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ junit-4.12-tests ---29[INFO] --- maven-source-plugin:3.0.1:jar-no-fork (attach-sources) @ junit-4.12-tests ---

BlockJUnit4RunnerWithParametersFactory

Using AI Code Generation

1@RunWith(Parameterized.class)2public class ParameterizedTest {3	@Parameter(0)4	public int m1;5	@Parameter(1)6	public int m2;7	@Parameter(2)8	public int result;9	public static Collection<Object[]> data() {10		Object[][] data = new Object[][] {{1,2,3}, {5,3,8}, {121,4,125}};11		return Arrays.asList(data);12	}13	public ParameterizedTest(int m1, int m2, int result) {14		this.m1 = m1;15		this.m2 = m2;16		this.result = result;17	}18	public void test() {19		assertEquals(result, m1+m2);20	}21}22@RunWith(Parameterized.class)23public class ParameterizedTest {24	@Parameter(0)25	public int m1;26	@Parameter(1)27	public int m2;28	@Parameter(2)29	public int result;30	public static Collection<Object[]> data() {31		Object[][] data = new Object[][] {{1,2,3}, {5,3,8}, {121,4,125}};32		return Arrays.asList(data);33	}34	public ParameterizedTest(int m1, int m2, int result) {35		this.m1 = m1;36		this.m2 = m2;37		this.result = result;38	}39	public void test() {40		assertEquals(result, m1+m2);41	}42}43@RunWith(Parameterized.class)44public class ParameterizedTest {45	@Parameter(0)46	public int m1;47	@Parameter(1)48	public int m2;49	@Parameter(2)50	public int result;51	public static Collection<Object[]> data() {52		Object[][] data = new Object[][] {{1,2,

BlockJUnit4RunnerWithParametersFactory

Using AI Code Generation

1@RunWith(Parameterized.class)2@Parameterized.UseParametersRunnerFactory(BlockJUnit4RunnerWithParametersFactory.class)3public class TestClass {4    private String param;5    public TestClass(String param) {6        this.param = param;7    }8    public static Collection<String[]> data() {9        return Arrays.asList(new String[][]{10                {"param1"},11                {"param2"},12                {"param3"},13                {"param4"},14                {"param5"},15                {"param6"},16                {"param7"},17                {"param8"},18                {"param9"},19                {"param10"}20        });21    }22    public void testMethod() {23        System.out.println("parameter is: " + param);24    }25}26@ValueSource(ints = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10})

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.