package junit.framework; import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; import java.lang.reflect.Modifier; /** * A test case defines the fixture to run multiple tests. To define a test case<br/> * <ol> * <li>implement a subclass of <code>TestCase</code></li> * <li>define instance variables that store the state of the fixture</li> * <li>initialize the fixture state by overriding {@link #setUp()}</li> * <li>clean-up after a test by overriding {@link #tearDown()}.</li> * </ol> * Each test runs in its own fixture so there * can be no side effects among test runs. * Here is an example: * <pre> * public class MathTest extends TestCase { * protected double fValue1; * protected double fValue2; * * protected void setUp() { * fValue1= 2.0; * fValue2= 3.0; * } * } * </pre> * * For each test implement a method which interacts * with the fixture. Verify the expected results with assertions specified * by calling {@link junit.framework.Assert#assertTrue(String, boolean)} with a boolean. * <pre> * public void testAdd() { * double result= fValue1 + fValue2; * assertTrue(result == 5.0); * } * </pre> * * Once the methods are defined you can run them. The framework supports * both a static type safe and more dynamic way to run a test. * In the static way you override the runTest method and define the method to * be invoked. A convenient way to do so is with an anonymous inner class. * <pre> * TestCase test= new MathTest("add") { * public void runTest() { * testAdd(); * } * }; * test.run(); * </pre> * The dynamic way uses reflection to implement {@link #runTest()}. It dynamically finds * and invokes a method. * In this case the name of the test case has to correspond to the test method * to be run. * <pre> * TestCase test= new MathTest("testAdd"); * test.run(); * </pre> * * The tests to be run can be collected into a TestSuite. JUnit provides * different <i>test runners</i> which can run a test suite and collect the results. * A test runner either expects a static method <code>suite</code> as the entry * point to get a test to run or it will extract the suite automatically. * <pre> * public static Test suite() { * suite.addTest(new MathTest("testAdd")); * suite.addTest(new MathTest("testDivideByZero")); * return suite; * } * </pre> * * @see TestResult * @see TestSuite */ @SuppressWarnings("deprecation") public abstract class TestCase extends Assert implements Test { /** * the name of the test case */ private String fName; /** * No-arg constructor to enable serialization. This method * is not intended to be used by mere mortals without calling setName(). */ public TestCase() { fName = null; } /** * Constructs a test case with the given name. */ public TestCase(String name) { fName = name; } /** * Counts the number of test cases executed by run(TestResult result). */ public int countTestCases() { return 1; } /** * Creates a default TestResult object. * * @see TestResult */ protected TestResult createResult() { return new TestResult(); } /** * A convenience method to run this test, collecting the results with a * default TestResult object. * * @see TestResult */ public TestResult run() { TestResult result = createResult(); run(result); return result; } /** * Runs the test case and collects the results in TestResult. */ public void run(TestResult result) { result.run(this); } /** * Runs the bare test sequence. * * @throws Throwable if any exception is thrown */ public void runBare() throws Throwable { Throwable exception = null; setUp(); try { runTest(); } catch (Throwable running) { exception = running; } finally { try { tearDown(); } catch (Throwable tearingDown) { if (exception == null) exception = tearingDown; } } if (exception != null) throw exception; } /** * Override to run the test and assert its state. * * @throws Throwable if any exception is thrown */ protected void runTest() throws Throwable { assertNotNull("TestCase.fName cannot be null", fName); // Some VMs crash when calling getMethod(null,null); Method runMethod = null; try { // use getMethod to get all public inherited // methods. getDeclaredMethods returns all // methods of this class but excludes the // inherited ones. runMethod = getClass().getMethod(fName, (Class[]) null); } catch (NoSuchMethodException e) { fail("Method \"" + fName + "\" not found"); } if (!Modifier.isPublic(runMethod.getModifiers())) { fail("Method \"" + fName + "\" should be public"); } try { runMethod.invoke(this); } catch (InvocationTargetException e) { e.fillInStackTrace(); throw e.getTargetException(); } catch (IllegalAccessException e) { e.fillInStackTrace(); throw e; } } /** * Asserts that a condition is true. If it isn't it throws * an AssertionFailedError with the given message. */ public static void assertTrue(String message, boolean condition) { Assert.assertTrue(message, condition); } /** * Asserts that a condition is true. If it isn't it throws * an AssertionFailedError. */ public static void assertTrue(boolean condition) { Assert.assertTrue(condition); } /** * Asserts that a condition is false. If it isn't it throws * an AssertionFailedError with the given message. */ public static void assertFalse(String message, boolean condition) { Assert.assertFalse(message, condition); } /** * Asserts that a condition is false. If it isn't it throws * an AssertionFailedError. */ public static void assertFalse(boolean condition) { Assert.assertFalse(condition); } /** * Fails a test with the given message. */ public static void fail(String message) { Assert.fail(message); } /** * Fails a test with no message. */ public static void fail() { Assert.fail(); } /** * Asserts that two objects are equal. If they are not * an AssertionFailedError is thrown with the given message. */ public static void assertEquals(String message, Object expected, Object actual) { Assert.assertEquals(message, expected, actual); } /** * Asserts that two objects are equal. If they are not * an AssertionFailedError is thrown. */ public static void assertEquals(Object expected, Object actual) { Assert.assertEquals(expected, actual); } /** * Asserts that two Strings are equal. */ public static void assertEquals(String message, String expected, String actual) { Assert.assertEquals(message, expected, actual); } /** * Asserts that two Strings are equal. */ public static void assertEquals(String expected, String actual) { Assert.assertEquals(expected, actual); } /** * Asserts that two doubles are equal concerning a delta. If they are not * an AssertionFailedError is thrown with the given message. If the expected * value is infinity then the delta value is ignored. */ public static void assertEquals(String message, double expected, double actual, double delta) { Assert.assertEquals(message, expected, actual, delta); } /** * Asserts that two doubles are equal concerning a delta. If the expected * value is infinity then the delta value is ignored. */ public static void assertEquals(double expected, double actual, double delta) { Assert.assertEquals(expected, actual, delta); } /** * Asserts that two floats are equal concerning a positive delta. If they * are not an AssertionFailedError is thrown with the given message. If the * expected value is infinity then the delta value is ignored. */ public static void assertEquals(String message, float expected, float actual, float delta) { Assert.assertEquals(message, expected, actual, delta); } /** * Asserts that two floats are equal concerning a delta. If the expected * value is infinity then the delta value is ignored. */ public static void assertEquals(float expected, float actual, float delta) { Assert.assertEquals(expected, actual, delta); } /** * Asserts that two longs are equal. If they are not * an AssertionFailedError is thrown with the given message. */ public static void assertEquals(String message, long expected, long actual) { Assert.assertEquals(message, expected, actual); } /** * Asserts that two longs are equal. */ public static void assertEquals(long expected, long actual) { Assert.assertEquals(expected, actual); } /** * Asserts that two booleans are equal. If they are not * an AssertionFailedError is thrown with the given message. */ public static void assertEquals(String message, boolean expected, boolean actual) { Assert.assertEquals(message, expected, actual); } /** * Asserts that two booleans are equal. */ public static void assertEquals(boolean expected, boolean actual) { Assert.assertEquals(expected, actual); } /** * Asserts that two bytes are equal. If they are not * an AssertionFailedError is thrown with the given message. */ public static void assertEquals(String message, byte expected, byte actual) { Assert.assertEquals(message, expected, actual); } /** * Asserts that two bytes are equal. */ public static void assertEquals(byte expected, byte actual) { Assert.assertEquals(expected, actual); } /** * Asserts that two chars are equal. If they are not * an AssertionFailedError is thrown with the given message. */ public static void assertEquals(String message, char expected, char actual) { Assert.assertEquals(message, expected, actual); } /** * Asserts that two chars are equal. */ public static void assertEquals(char expected, char actual) { Assert.assertEquals(expected, actual); } /** * Asserts that two shorts are equal. If they are not * an AssertionFailedError is thrown with the given message. */ public static void assertEquals(String message, short expected, short actual) { Assert.assertEquals(message, expected, actual); } /** * Asserts that two shorts are equal. */ public static void assertEquals(short expected, short actual) { Assert.assertEquals(expected, actual); } /** * Asserts that two ints are equal. If they are not * an AssertionFailedError is thrown with the given message. */ public static void assertEquals(String message, int expected, int actual) { Assert.assertEquals(message, expected, actual); } /** * Asserts that two ints are equal. */ public static void assertEquals(int expected, int actual) { Assert.assertEquals(expected, actual); } /** * Asserts that an object isn't null. */ public static void assertNotNull(Object object) { Assert.assertNotNull(object); } /** * Asserts that an object isn't null. If it is * an AssertionFailedError is thrown with the given message. */ public static void assertNotNull(String message, Object object) { Assert.assertNotNull(message, object); } /** * Asserts that an object is null. If it isn't an {@link AssertionError} is * thrown. * Message contains: Expected: <null> but was: object * * @param object Object to check or <code>null</code> */ public static void assertNull(Object object) { Assert.assertNull(object); } /** * Asserts that an object is null. If it is not * an AssertionFailedError is thrown with the given message. */ public static void assertNull(String message, Object object) { Assert.assertNull(message, object); } /** * Asserts that two objects refer to the same object. If they are not * an AssertionFailedError is thrown with the given message. */ public static void assertSame(String message, Object expected, Object actual) { Assert.assertSame(message, expected, actual); } /** * Asserts that two objects refer to the same object. If they are not * the same an AssertionFailedError is thrown. */ public static void assertSame(Object expected, Object actual) { Assert.assertSame(expected, actual); } /** * Asserts that two objects do not refer to the same object. If they do * refer to the same object an AssertionFailedError is thrown with the * given message. */ public static void assertNotSame(String message, Object expected, Object actual) { Assert.assertNotSame(message, expected, actual); } /** * Asserts that two objects do not refer to the same object. If they do * refer to the same object an AssertionFailedError is thrown. */ public static void assertNotSame(Object expected, Object actual) { Assert.assertNotSame(expected, actual); } public static void failSame(String message) { Assert.failSame(message); } public static void failNotSame(String message, Object expected, Object actual) { Assert.failNotSame(message, expected, actual); } public static void failNotEquals(String message, Object expected, Object actual) { Assert.failNotEquals(message, expected, actual); } public static String format(String message, Object expected, Object actual) { return Assert.format(message, expected, actual); } /** * Sets up the fixture, for example, open a network connection. * This method is called before a test is executed. */ protected void setUp() throws Exception { } /** * Tears down the fixture, for example, close a network connection. * This method is called after a test is executed. */ protected void tearDown() throws Exception { } /** * Returns a string representation of the test case. */ @Override public String toString() { return getName() + "(" + getClass().getName() + ")"; } /** * Gets the name of a TestCase. * * @return the name of the TestCase */ public String getName() { return fName; } /** * Sets the name of a TestCase. * * @param name the name to set */ public void setName(String name) { fName = name; } }