JUnit 4 provides BeforeClass annotation to initialize costly resources for the use of all test cases in the test class. One important thing to remember is that the method marked as BeforeClass would run only once and the resource initialized by it would be shared by all test methods. The method marked as BeforeClass would […]
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Use JUnit expected exception feature to test a unit that might throw an exception in given situation or for a given input. package com.ourownjava.unit.under.test; import static org.junit.Assert.assertEquals; import static org.junit.Assert.assertNotNull; import static org.junit.Assert.assertTrue; import static org.junit.Assert.fail; import java.util.List; import org.junit.Before; import org.junit.Test; import com.ourownjava.exception.NoAppleException; import com.ourownjava.model.Apple; /** * * @author Sanju Thomas * */ public […]
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Always do a strong assertion against the returned state from a unit. Avoid assertion like the collection size shall be greater than zero. A better assertion could be checking the size of the collection and content of the collection. Complete source code can be found here. package com.ourownjava.unit.under.test; import static org.junit.Assert.assertEquals; import static org.junit.Assert.assertNotNull; import […]
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1. Right click on the project and select properties. 2. In the properties window, go to Java Build Path -> Libraries 3. Click on “Add Library” 4. In the Add Library window, select JUnit and click Next Button. 5. In the next window select the desired JUnit version. Select JUnit 4 for annotation driven tests […]
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