org.junit.runners
Class Parameterized
java.lang.Object
org.junit.runner.Runner
org.junit.runners.ParentRunner<Runner>
org.junit.runners.Suite
org.junit.runners.Parameterized
- All Implemented Interfaces:
- Describable, Filterable, Sortable
public class Parameterized
- extends Suite
The custom runner Parameterized
implements parameterized tests.
When running a parameterized test class, instances are created for the
cross-product of the test methods and the test data elements.
For example, to test a Fibonacci function, write:
@RunWith(Parameterized.class)
public class FibonacciTest {
@Parameters
public static List<Object[]> data() {
return Arrays.asList(new Object[][] {
{ { 0, 0 }, { 1, 1 }, { 2, 1 }, { 3, 2 }, { 4, 3 }, { 5, 5 },
{ 6, 8 } } });
}
private int fInput;
private int fExpected;
public FibonacciTest(int input, int expected) {
fInput= input;
fExpected= expected;
}
@Test
public void test() {
assertEquals(fExpected, Fibonacci.compute(fInput));
}
}
Each instance of FibonacciTest
will be constructed using the
two-argument constructor and the data values in the
@Parameters
method.
Nested Class Summary |
static interface |
Parameterized.Parameters
Annotation for a method which provides parameters to be injected into the
test class constructor by Parameterized |
Method Summary |
protected List<Runner> |
getChildren()
Returns a list of objects that define the children of this Runner. |
Methods inherited from class org.junit.runners.ParentRunner |
childrenInvoker, classBlock, classRules, collectInitializationErrors, filter, getDescription, getName, getTestClass, run, runLeaf, setScheduler, sort, validatePublicVoidNoArgMethods, withAfterClasses, withBeforeClasses |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Parameterized
public Parameterized(Class<?> klass)
throws Throwable
- Only called reflectively. Do not use programmatically.
- Throws:
Throwable
getChildren
protected List<Runner> getChildren()
- Description copied from class:
ParentRunner
- Returns a list of objects that define the children of this Runner.
- Overrides:
getChildren
in class Suite