org.junit.runner
Class Request

java.lang.Object
  org.junit.runner.Request

public abstract class Request
extends Object

A Request is an abstract description of tests to be run. Older versions of JUnit did not need such a concept--tests to be run were described either by classes containing tests or a tree of Tests. However, we want to support filtering and sorting, so we need a more abstract specification than the tests themselves and a richer specification than just the classes.

The flow when JUnit runs tests is that a Request specifies some tests to be run -> a Runner is created for each class implied by the Request -> the Runner returns a detailed Description which is a tree structure of the tests to be run.

Since:

4.0

Constructor Summary

Request()

Method Summary

static Request	aClass(Class<?> clazz) Create a Request that, when processed, will run all the tests in a class.
static Request	classes(Class<?>... classes) Create a Request that, when processed, will run all the tests in a set of classes with the default Computer.
static Request	classes(Computer computer, Class<?>... classes) Create a Request that, when processed, will run all the tests in a set of classes.
static Request	classWithoutSuiteMethod(Class<?> clazz) Create a Request that, when processed, will run all the tests in a class.
static Request	errorReport(Class<?> klass, Throwable cause) Deprecated.
Request	filterWith(Description desiredDescription) Returns a Request that only runs contains tests whose Description equals desiredDescription
Request	filterWith(Filter filter) Returns a Request that only contains those tests that should run when filter is applied
abstract Runner	getRunner() Returns a Runner for this Request
static Request	method(Class<?> clazz, String methodName) Create a Request that, when processed, will run a single test.
static Request	runner(Runner runner)
Request	sortWith(Comparator<Description> comparator) Returns a Request whose Tests can be run in a certain order, defined by comparator For example, here is code to run a test suite in alphabetical order:

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Request

public Request()

Method Detail

method

public static Request method(Class<?> clazz,
                             String methodName)

Create a Request that, when processed, will run a single test. This is done by filtering out all other tests. This method is used to support rerunning single tests.

Parameters:

clazz - the class of the test

methodName - the name of the test

Returns:

a Request that will cause a single test be run

aClass

public static Request aClass(Class<?> clazz)

Create a Request that, when processed, will run all the tests in a class. The odd name is necessary because class is a reserved word.

Parameters:

clazz - the class containing the tests

Returns:

a Request that will cause all tests in the class to be run

classWithoutSuiteMethod

public static Request classWithoutSuiteMethod(Class<?> clazz)

Create a Request that, when processed, will run all the tests in a class. If the class has a suite() method, it will be ignored.

Parameters:

clazz - the class containing the tests

Returns:

a Request that will cause all tests in the class to be run

classes

public static Request classes(Computer computer,
                              Class<?>... classes)

Create a Request that, when processed, will run all the tests in a set of classes.

Parameters:

computer - Helps construct Runners from classes

classes - the classes containing the tests

Returns:

a Request that will cause all tests in the classes to be run

classes

public static Request classes(Class<?>... classes)

Create a Request that, when processed, will run all the tests in a set of classes with the default Computer.

Parameters:

classes - the classes containing the tests

Returns:

a Request that will cause all tests in the classes to be run

errorReport

@Deprecated
public static Request errorReport(Class<?> klass,
                                             Throwable cause)

Deprecated.

Not used within JUnit. Clients should simply instantiate ErrorReportingRunner themselves

runner

public static Request runner(Runner runner)

Parameters:

runner - the runner to return

Returns:

a Request that will run the given runner when invoked

getRunner

public abstract Runner getRunner()

Returns a Runner for this Request

Returns:

corresponding Runner for this Request

filterWith

public Request filterWith(Filter filter)

Returns a Request that only contains those tests that should run when filter is applied

Parameters:

filter - The Filter to apply to this Request

Returns:

the filtered Request

filterWith

public Request filterWith(Description desiredDescription)

Returns a Request that only runs contains tests whose Description equals desiredDescription

Parameters:

desiredDescription - Description of those tests that should be run

Returns:

the filtered Request

sortWith

public Request sortWith(Comparator<Description> comparator)

Returns a Request whose Tests can be run in a certain order, defined by comparator For example, here is code to run a test suite in alphabetical order:

 private static Comparator forward() {
 return new Comparator() {
 public int compare(Description o1, Description o2) {
 return o1.getDisplayName().compareTo(o2.getDisplayName());
 }
 };
 }

 public static main() {
 new JUnitCore().run(Request.aClass(AllTests.class).sortWith(forward()));
 }
 

Parameters:

comparator - definition of the order of the tests in this Request

Returns:

a Request with ordered Tests