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With inspiration from other libraries
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
*
* - implement a subclass of
TestCase
* - define instance variables that store the state of the fixture
* - initialize the fixture state by overriding {@link #setUp()}
* - clean-up after a test by overriding {@link #tearDown()}.
*
* Each test runs in its own fixture so there
* can be no side effects among test runs.
* Here is an example:
*
* public class MathTest extends TestCase {
* protected double fValue1;
* protected double fValue2;
*
* protected void setUp() {
* fValue1= 2.0;
* fValue2= 3.0;
* }
* }
*
*
* 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.
*
* public void testAdd() {
* double result= fValue1 + fValue2;
* assertTrue(result == 5.0);
* }
*
*
* 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.
*
* TestCase test= new MathTest("add") {
* public void runTest() {
* testAdd();
* }
* };
* test.run();
*
* 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.
*
* TestCase test= new MathTest("testAdd");
* test.run();
*
*
* The tests to be run can be collected into a TestSuite. JUnit provides
* different test runners which can run a test suite and collect the results.
* A test runner either expects a static method suite as the entry
* point to get a test to run or it will extract the suite automatically.
*
* public static Test suite() {
* suite.addTest(new MathTest("testAdd"));
* suite.addTest(new MathTest("testDivideByZero"));
* return suite;
* }
*
*
* @see TestResult
* @see TestSuite
*/
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.
*/
@SuppressWarnings("deprecation")
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.
*/
@SuppressWarnings("deprecation")
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.
*/
@SuppressWarnings("deprecation")
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.
*/
@SuppressWarnings("deprecation")
public static void assertFalse(boolean condition) {
Assert.assertFalse(condition);
}
/**
* Fails a test with the given message.
*/
@SuppressWarnings("deprecation")
public static void fail(String message) {
Assert.fail(message);
}
/**
* Fails a test with no message.
*/
@SuppressWarnings("deprecation")
public static void fail() {
Assert.fail();
}
/**
* Asserts that two objects are equal. If they are not
* an AssertionFailedError is thrown with the given message.
*/
@SuppressWarnings("deprecation")
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.
*/
@SuppressWarnings("deprecation")
public static void assertEquals(Object expected, Object actual) {
Assert.assertEquals(expected, actual);
}
/**
* Asserts that two Strings are equal.
*/
@SuppressWarnings("deprecation")
public static void assertEquals(String message, String expected, String actual) {
Assert.assertEquals(message, expected, actual);
}
/**
* Asserts that two Strings are equal.
*/
@SuppressWarnings("deprecation")
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.
*/
@SuppressWarnings("deprecation")
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.
*/
@SuppressWarnings("deprecation")
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.
*/
@SuppressWarnings("deprecation")
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.
*/
@SuppressWarnings("deprecation")
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.
*/
@SuppressWarnings("deprecation")
public static void assertEquals(String message, long expected, long actual) {
Assert.assertEquals(message, expected, actual);
}
/**
* Asserts that two longs are equal.
*/
@SuppressWarnings("deprecation")
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.
*/
@SuppressWarnings("deprecation")
public static void assertEquals(String message, boolean expected, boolean actual) {
Assert.assertEquals(message, expected, actual);
}
/**
* Asserts that two booleans are equal.
*/
@SuppressWarnings("deprecation")
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.
*/
@SuppressWarnings("deprecation")
public static void assertEquals(String message, byte expected, byte actual) {
Assert.assertEquals(message, expected, actual);
}
/**
* Asserts that two bytes are equal.
*/
@SuppressWarnings("deprecation")
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.
*/
@SuppressWarnings("deprecation")
public static void assertEquals(String message, char expected, char actual) {
Assert.assertEquals(message, expected, actual);
}
/**
* Asserts that two chars are equal.
*/
@SuppressWarnings("deprecation")
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.
*/
@SuppressWarnings("deprecation")
public static void assertEquals(String message, short expected, short actual) {
Assert.assertEquals(message, expected, actual);
}
/**
* Asserts that two shorts are equal.
*/
@SuppressWarnings("deprecation")
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.
*/
@SuppressWarnings("deprecation")
public static void assertEquals(String message, int expected, int actual) {
Assert.assertEquals(message, expected, actual);
}
/**
* Asserts that two ints are equal.
*/
@SuppressWarnings("deprecation")
public static void assertEquals(int expected, int actual) {
Assert.assertEquals(expected, actual);
}
/**
* Asserts that an object isn't null.
*/
@SuppressWarnings("deprecation")
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.
*/
@SuppressWarnings("deprecation")
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: but was: object
*
* @param object Object to check or null
*/
@SuppressWarnings("deprecation")
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.
*/
@SuppressWarnings("deprecation")
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.
*/
@SuppressWarnings("deprecation")
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.
*/
@SuppressWarnings("deprecation")
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.
*/
@SuppressWarnings("deprecation")
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.
*/
@SuppressWarnings("deprecation")
public static void assertNotSame(Object expected, Object actual) {
Assert.assertNotSame(expected, actual);
}
@SuppressWarnings("deprecation")
public static void failSame(String message) {
Assert.failSame(message);
}
@SuppressWarnings("deprecation")
public static void failNotSame(String message, Object expected, Object actual) {
Assert.failNotSame(message, expected, actual);
}
@SuppressWarnings("deprecation")
public static void failNotEquals(String message, Object expected, Object actual) {
Assert.failNotEquals(message, expected, actual);
}
@SuppressWarnings("deprecation")
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;
}
}