Unit Test Frameworks

Name

TestCase

Description

TestCase (see Figure B-6) is an abstract class that acts as a parent for unit test classes. A TestCase may contain a single test method or be a test fixture containing multiple tests.

A TestCase may be run directly by calling run( ). More commonly, a TestRunner runs a TestCase by calling run(TestResult), passing in a TestResult object to collect the results.

The method runTest( ) can be overridden by subclasses of TestCase to implement a test class with a single test method.

Alternatively, an instance of TestCase can be created with a name corresponding to the name of a test method. The default implementation of runTest( ) uses reflection to invoke the named test method. This allows a TestCase to have multiple test methods. The following code snippet runs the test method BookTest.testBookTitle( ):

TestCase test = new BookTest( "testBookTitle" );
TestResult result = test.run( );

Whichever way the test methods are run, TestCase ensures test isolation by running setUp( ) prior to the test method and tearDown( ) afterwards.

Figure B-6. The abstract class TestCase

Declaration

public abstract class TestCase
extends Assert

implements Test

Constructors

TestCase(String name)

A constructor that sets the name. As described above, this name may specify the test method to run.

TestCase( )

A constructor with no arguments for use in serialization. Should not be used otherwise since ...