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TestFixture Class Reference
[Writing test fixture]

Wraps a test case with setUp and tearDown methods. More...

#include <TestFixture.h>

Inheritance diagram for TestFixture:

List of all members.

Public Member Functions
virtual	~TestFixture ()
virtual void	setUp ()
	Set up context before running a test.
virtual void	tearDown ()
	Clean up after the test run.

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Detailed Description

Wraps a test case with setUp and tearDown methods.

A TestFixture is used to provide a common environment for a set of test cases.

To define a test fixture, do the following:

• implement a subclass of TestCase
• the fixture is defined by instance variables
• initialize the fixture state by overriding setUp (i.e. construct the instance variables of the fixture)
• clean-up after a test by overriding tearDown.

Each test runs in its own fixture so there can be no side effects among test runs. Here is an example:

 class MathTest : public CppUnit::TestFixture {
 protected:
   int m_value1, m_value2;

 public:
   MathTest() {}

   void setUp () {
     m_value1 = 2;
     m_value2 = 3;
   }
 }

For each test implement a method which interacts with the fixture. Verify the expected results with assertions specified by calling CPPUNIT_ASSERT on the expression you want to test:

 public: 
   void testAdd () {
     int result = m_value1 + m_value2;
     CPPUNIT_ASSERT( result == 5 );
   }

Once the methods are defined you can run them. To do this, use a TestCaller.

 CppUnit::Test *test = new CppUnit::TestCaller<MathTest>( "testAdd", 
                                                          &MathTest::testAdd );
 test->run();

The tests to be run can be collected into a TestSuite.

 public: 
   static CppUnit::TestSuite *MathTest::suite () {
      CppUnit::TestSuite *suiteOfTests = new CppUnit::TestSuite;
      suiteOfTests->addTest(new CppUnit::TestCaller<MathTest>(
                              "testAdd", &MathTest::testAdd));
      suiteOfTests->addTest(new CppUnit::TestCaller<MathTest>(
                              "testDivideByZero", &MathTest::testDivideByZero));
      return suiteOfTests;
  }

A set of macros have been created for convenience. They are located in HelperMacros.h.

See also:

TestResult, TestSuite, TestCaller,

CPPUNIT_TEST_SUB_SUITE, CPPUNIT_TEST, CPPUNIT_TEST_SUITE_END,

CPPUNIT_TEST_SUITE_REGISTRATION, CPPUNIT_TEST_EXCEPTION, CPPUNIT_TEST_FAIL.

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Constructor & Destructor Documentation

virtual TestFixture::~TestFixture (   )  [inline, virtual]

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Member Function Documentation

virtual void TestFixture::setUp (   )  [inline, virtual]

Set up context before running a test. Reimplemented in TestCaseDecorator, and TestCaller< Fixture >.

virtual void TestFixture::tearDown (   )  [inline, virtual]

Clean up after the test run. Reimplemented in TestCaseDecorator, and TestCaller< Fixture >.

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The documentation for this class was generated from the following file:

• TestFixture.h

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