CppUnit - The Unit Testing Library

CppUnit project page | FAQ

Public Member Functions | List of all members
TestFixture Class Reference
Writing test fixture

Wraps a test case with setUp and tearDown methods.A TestFixture is used to provide a common environment for a set of test cases. More...

`#include <TestFixture.h>`

Inheritance diagram for TestFixture:

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

## 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.

## Constructor & Destructor Documentation

## § ~TestFixture()

virtual TestFixture::~TestFixture | ( |  | ) |
| inlinevirtual

## Member Function Documentation

## § setUp()

virtual void TestFixture::setUp | ( |  | ) |
| inlinevirtual

Set up context before running a test.

Reimplemented in TestCaller< Fixture >, and TestCaseDecorator.

## § tearDown()

virtual void TestFixture::tearDown | ( |  | ) |
| inlinevirtual

Clean up after the test run.

Reimplemented in TestCaller< Fixture >, and TestCaseDecorator.

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

- TestFixture.h

| Send comments to: CppUnit Developers