Jeffb2 / JUnitIn28Minutes

JUNIT Tutorial For Beginners

JUnitIn28Minutes

Git hub repository for the free Udemy course : https://www.udemy.com/junit-tutorial-for-beginners-with-java-examples/

Get started with Junit

• Course Overview
  • Section 1 Foundation
  • Section 2 First JUnit Example
  • Section 3 Second JUnit Example
  • Section 4 JUnit Simple Test Scenarios
  • Section 5 JUnit Intermediate Test Scenarios
  • Section 6 JUnit Best Practices
  • Starting Examples
• About in28Minutes
  • Our Beliefs
  • Our Approach
  • Find Us
  • Other Courses

Topics

Section 1 Foundation

• What is JUnit?
• Why Unit Testing?

Section 2 First JUnit Example

@Test Annotation

• Running JUnit
• No Failure = Success
• Basic Assert methods

Section 3 Second JUnit Example

• assertTrue and assertFalse methods
• @Before @After annotations
• @BeforeClass @AfterClass annotations

Section 4 JUnit Simple Test Scenarios

• Comparing Arrays
• Testing Exceptions
• Performance Unit Tests

Section 5 JUnit Intermediate Test Scenarios

• Parameterized Tests
• Test Suites

Section 6 JUnit Best Practices

• Naming Test Methods
• Highlight Important Values in Tests
• Handle Exceptions Properly
• Readable Assert Statements

Starting Examples

package com.in28minutes.junit.helper;

public class StringHelper {

	public String truncateAInFirst2Positions(String str) {
		if (str.length() <= 2)
			return str.replaceAll("A", "");

		String first2Chars = str.substring(0, 2);
		String stringMinusFirst2Chars = str.substring(2);

		return first2Chars.replaceAll("A", "") 
				+ stringMinusFirst2Chars;
	}

	public boolean areFirstAndLastTwoCharactersTheSame(String str) {

		if (str.length() <= 1)
			return false;
		if (str.length() == 2)
			return true;

		String first2Chars = str.substring(0, 2);

		String last2Chars = str.substring(str.length() - 2);

		return first2Chars.equals(last2Chars);
	}

}

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Our Beliefs

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Our Approach

• Problem Solution based Step by Step Hands-on Learning
• Practical, Real World Application Examples.
• We use 80-20 Rule. We discuss 20% things used 80% of time in depth. We touch upon other things briefly equipping you with enough knowledge to find out more on your own.
• We will be developing a demo application in the course, which could be reused in your projects, saving hours of your effort.
• All the code is available on Github, for most steps.

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