Test Automation 101Intro to Java Test Frameworks

Who am I?LimTestertwitter : lsim001www.codinglegends.com

What are we going to learn● Setting up a test project from scratch● How to write a test using JUnit● How to write a test using TestNG

Good habits● Consistent naming convensions of

tests● Atomic● Single assertion

Common terminology● Test suite● Test class● Test● Before and After test hooks

○ class○ test

● Assertions

Tools you need● Git● Maven● Java IDE (Eclipse or IntelliJ)

What to test against● The world famous calculator program● Get the code from Github

○ git clone git@github.com:limsim/intro-to-java-test-frameworks-start.git

Different ways of running test● From command line run mvn test● Use IDE ● (You could use Java and JUnit but the

command is long and not user friendly)

Test classpublic class CalculatorTest{

}

Testpublic class CalculatorTest{

@Testpublic void

addReturnsSumOfTwoNumbers() {

}}

TestAdd JUnit dependency to Maven <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> <scope>test</scope> </dependency> </dependencies>

Make an assertionpublic class CalculatorTest{

@Testpublic void

addReturnsSumOfTwoNumbers() {Assert.assertEquals("Fail!", 1,

new Calculator().add(1, 1));}

}

Common assertions● assertTrue● assertFalse● assertNotNull● assertSame● assertNotSame

ExcerciseTry writing tests to do the following● Use assertTrue to check that expected and

actual results from add() are the same.● Use assertFalse to check that expected and

actual results from add() are not the same.● Use assertNotNull to check that Calculator has

been created.

Generate HTML reportsNeed to add a reporting plugin<reporting> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-surefire-report-plugin</artifactId> <version>2.18.1</version> </plugin> </plugins> </reporting>

Generate HTML Report● Run mvn site● The HTML Report is generated in

target/site

Test hooks@Beforepublic void doThisFirst() {

}

@Afterpublic void doThisLast() {

}

TestNGAdd TestNG dependency <dependencies> <dependency> <groupId>org.testng</groupId> <artifactId>testng</artifactId> <version>6.8.8</version> <scope>test</scope> </dependency> </dependencies>

TestNG● Create a test class● Create a test method● Write an assertion

TestNG hooks@BeforeClasspublic void createCalculator() {

}

TestNG hooks● AfterClass● Before(After)Method● Before(After)Suite● Before(After)Groups● Before(After)Test