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Difference between revisions of "User:Michael.norman.oracle.com/Info on JUnit4"
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'''<font color="#7f0055">public void'''</font> cleanupTestData() { ... } | '''<font color="#7f0055">public void'''</font> cleanupTestData() { ... } | ||
} | } | ||
− | * improved fixture | + | * improved fixture management - old style: |
− | import junit.framework.*; | + | '''<font color="#7f0055">import'''</font> junit.framework.*; |
− | import junit.extensions.TestSetup; | + | '''<font color="#7f0055">import'''</font> junit.extensions.TestSetup; |
− | public class AllTestsOneTimeSetup { | + | '''<font color="#7f0055">public class'''</font> AllTestsOneTimeSetup { |
− | public static Test suite() { | + | '''<font color="#7f0055">public static'''</font> Connection conn; // database connection |
+ | |||
+ | '''<font color="#7f0055">public static'''</font> Test suite() { | ||
TestSuite suite = new TestSuite(); | TestSuite suite = new TestSuite(); | ||
− | |||
suite.addTest(SomeTest.suite()); | suite.addTest(SomeTest.suite()); | ||
suite.addTest(AnotherTest.suite()); | suite.addTest(AnotherTest.suite()); | ||
TestSetup wrapper = new TestSetup(suite) { | TestSetup wrapper = new TestSetup(suite) { | ||
− | |||
protected void setUp() { | protected void setUp() { | ||
− | + | setUpDatabaseConnection(); | |
} | } | ||
− | |||
protected void tearDown() { | protected void tearDown() { | ||
− | + | tearDownDatabaseConnection(); | |
} | } | ||
}; | }; | ||
− | |||
return wrapper; | return wrapper; | ||
} | } | ||
− | public static void | + | '''<font color="#7f0055">public static void'''</font> setUpDatabaseConnection() { |
// one-time initialization code | // one-time initialization code | ||
+ | conn = ...; | ||
} | } | ||
− | public static void | + | '''<font color="#7f0055">public static void'''</font> tearDownDatabaseConnection() { |
// one-time cleanup code | // one-time cleanup code | ||
+ | conn.close() ... | ||
} | } | ||
} | } |
Revision as of 15:26, 4 December 2007
Information on JUnit4
- successor to most widely used unit-testing framework for Java, JUnit3
- under active development (last JUnit3 release 3.8.2 2006-03-03)
- JUnit 4 released 2006-02-16
- 4.1 2006-04-27
- 4.2 2006-11-16
- 4.3 2006-11-16
- 4.3.1 2007-03-28
- 4.4 (current as of 071204) 2007-07-18
- JUnit 4 released 2006-02-16
- based on Java 5 features:
- no longer need to extend class TestCase
- test-method names do not have to start with the prefix test
- mark your test method with a @Test annotation
- use static import's to get assert methods (instead of via inheritance)
importjunit.framework.TestCase; import org.junit.Test; import static org.junit.Assert.*; public class CalculatorTestextendsTestCase { @Test public voidtestadd() { .... assertEquals(4, calculator.add( 1, 3 )); } }
- improved test lifecycle management:
- setUp() and tearDown() replaced with @Before and @After annotations (allows for multiple @Before/@After methods)
public class CalculatorTest { @Before public void prepareTestData() { ... } @Before public void setupMocks() { ... } @After public void cleanupTestData() { ... } }
- improved fixture management - old style:
import junit.framework.*; import junit.extensions.TestSetup; public class AllTestsOneTimeSetup { public static Connection conn; // database connection
public static Test suite() { TestSuite suite = new TestSuite(); suite.addTest(SomeTest.suite()); suite.addTest(AnotherTest.suite()); TestSetup wrapper = new TestSetup(suite) { protected void setUp() { setUpDatabaseConnection(); } protected void tearDown() { tearDownDatabaseConnection(); } }; return wrapper; } public static void setUpDatabaseConnection() { // one-time initialization code conn = ...; } public static void tearDownDatabaseConnection() { // one-time cleanup code conn.close() ... } }