Package junit.framework
Class TestCase
java.lang.Object
junit.framework.Assert
junit.framework.TestCase
- All Implemented Interfaces:
Test
- Direct Known Subclasses:
ExceptionTestCase
A test case defines the fixture to run multiple tests. To define a test case
1) implement a subclass of TestCase
2) define instance variables that store the state of the fixture
3) initialize the fixture state by overriding
4) clean-up after a test by overriding
Each test runs in its own fixture so there can be no side effects among test runs. Here is an example:
1) implement a subclass of TestCase
2) define instance variables that store the state of the fixture
3) initialize the fixture state by overriding
setUp
4) 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:
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
assertTrue
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
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 Also:
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionint
Counts the number of test cases executed by run(TestResult result).protected TestResult
Creates a default TestResult objectgetName()
Gets the name of a TestCaserun()
A convenience method to run this test, collecting the results with a default TestResult object.void
run
(TestResult result) Runs the test case and collects the results in TestResult.void
runBare()
Runs the bare test sequence.protected void
runTest()
Override to run the test and assert its state.void
Sets the name of a TestCaseprotected void
setUp()
Sets up the fixture, for example, open a network connection.protected void
tearDown()
Tears down the fixture, for example, close a network connection.toString()
Returns a string representation of the test caseMethods inherited from class junit.framework.Assert
assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertFalse, assertFalse, assertNotNull, assertNotNull, assertNotSame, assertNotSame, assertNull, assertNull, assertSame, assertSame, assertTrue, assertTrue, fail, fail, failNotEquals, failNotSame, failSame
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Constructor Details
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TestCase
public TestCase()No-arg constructor to enable serialization. This method is not intended to be used by mere mortals without calling setName(). -
TestCase
Constructs a test case with the given name.
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Method Details
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countTestCases
public int countTestCases()Counts the number of test cases executed by run(TestResult result).- Specified by:
countTestCases
in interfaceTest
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createResult
Creates a default TestResult object- See Also:
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run
A convenience method to run this test, collecting the results with a default TestResult object.- See Also:
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run
Runs the test case and collects the results in TestResult. -
runBare
Runs the bare test sequence.- Throws:
Throwable
- if any exception is thrown
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runTest
Override to run the test and assert its state.- Throws:
Throwable
- if any exception is thrown
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setUp
Sets up the fixture, for example, open a network connection. This method is called before a test is executed.- Throws:
Exception
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tearDown
Tears down the fixture, for example, close a network connection. This method is called after a test is executed.- Throws:
Exception
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toString
Returns a string representation of the test case -
getName
Gets the name of a TestCase- Returns:
- returns a String
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setName
Sets the name of a TestCase- Parameters:
name
- The name to set
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