Examples of junit.framework.TestCase

junit.framework.TestCase
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 {@link #setUp()}
4. 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 void startTest(Test test) {
    fStartCount++;
  }
  public void testError() {
    TestCase test= new TestCase("noop") {
      @Override
      public void runTest() {
        throw new Error();
      }
    };
    test.run(fResult);
    assertEquals(1, fErrorCount);
    assertEquals(1, fEndCount);
  }

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    test.run(fResult);
    assertEquals(1, fErrorCount);
    assertEquals(1, fEndCount);
  }
  public void testFailure() {
    TestCase test= new TestCase("noop") {
      @Override
      public void runTest() {
        fail();
      }
    };
    test.run(fResult);
    assertEquals(1, fFailureCount);
    assertEquals(1, fEndCount);
  }

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    test.run(fResult);
    assertEquals(1, fFailureCount);
    assertEquals(1, fEndCount);
  }
  public void testStartStop() {
    TestCase test= new TestCase("noop") {
      @Override
      public void runTest() {
      }
    };
    test.run(fResult);
    assertEquals(1, fStartCount);
    assertEquals(1, fEndCount);
  }

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  public void testOneTest() {
    String expected= expected(new String[]{".", "Time: 0", "", "OK (1 test)", ""});
    TestSuite suite = new TestSuite();
    suite.addTest(new TestCase() { @Override
    public void runTest() {}});
    runner.doRun(suite);
    assertEquals(expected, output.toString());
  }

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  }
  
  public void testTwoTests() {
    String expected= expected(new String[]{"..", "Time: 0", "", "OK (2 tests)", ""});
    TestSuite suite = new TestSuite();
    suite.addTest(new TestCase() { @Override
    public void runTest() {}});
    suite.addTest(new TestCase() { @Override
    public void runTest() {}});
    runner.doRun(suite);
    assertEquals(expected, output.toString());
  }

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        getWriter().println("Failures here");
      }
    };
    runner.setPrinter(printer);
    TestSuite suite = new TestSuite();
    suite.addTest(new TestCase() { @Override
    public void runTest() {throw new AssertionFailedError();}});
    runner.doRun(suite);
    assertEquals(expected, output.toString());
  }

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        getWriter().println("Errors here");
      }
    };
    runner.setPrinter(printer);
    TestSuite suite = new TestSuite();
    suite.addTest(new TestCase() { @Override
    public void runTest() throws Exception {throw new Exception();}});
    runner.doRun(suite);
    assertEquals(expected, output.toString());
  }

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    // writing self tests. And you thought those weird anonymous
    // inner classes were bad...
    assertEquals("testCaseToString(junit.tests.framework.TestCaseTest)", toString());
  }
  public void testError() {
    TestCase error= new TestCase("error") {
      @Override
      protected void runTest() {
        throw new Error();
      }
    };

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    };
    verifyError(fails);
    assertTrue(fails.fTornDown);
  }
  public void testSetupFails() {
    TestCase fails= new TestCase("success") {
      @Override
      protected void setUp() {
        throw new Error();
      }
      @Override

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      }
    };
    verifyError(fails);
  }
  public void testSuccess() {
    TestCase success= new TestCase("success") {
      @Override
      protected void runTest() {
      }
    };
    verifySuccess(success);

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