/**
* Starts Grid instance. Note that if grid is already started, then it will be looked up and
* returned from this method.
*
* @return Started grid.
*/
private Grid startGrid() {
Properties props = System.getProperties();
gridName = props.getProperty(GRIDGAIN_NAME.name());
if (!props.containsKey(GRIDGAIN_NAME.name()) || G.state(gridName) != GridFactoryState.STARTED) {
selfStarted = true;
// Set class loader for the spring.
ClassLoader curCl = Thread.currentThread().getContextClassLoader();
// Add no-op logger to remove no-appender warning.
Appender app = new NullAppender();
Logger.getRootLogger().addAppender(app);
try {
Thread.currentThread().setContextClassLoader(getClass().getClassLoader());
Grid grid = G.start(cfgPath);
gridName = grid.name();
System.setProperty(GRIDGAIN_NAME.name(), grid.name());
return grid;
} catch (GridException e) {
throw new GridRuntimeException("Failed to start grid: " + cfgPath, e);
} finally {
Logger.getRootLogger().removeAppender(app);
Thread.currentThread().setContextClassLoader(curCl);
}
}
return G.grid(gridName);
}
/**
* Test suite for distributing JUnit3 tests. Simply add tests to this suite just like you would for
* regular JUnit3 suites, and these tests will be executed in parallel on the grid. Note that if
* there are no other grid nodes, this suite will still ensure parallel test execution within single
* JVM.
*
* <p>Below is an example of distributed JUnit3 test suite:
*
* <pre name="code" class="java">
* public class GridJunit3ExampleTestSuite {
* // Standard JUnit3 static suite method.
* public static TestSuite suite() {
* TestSuite suite = new GridJunit3TestSuite("Example Grid Test Suite");
*
* // Add tests.
* suite.addTestSuite(TestA.class);
* suite.addTestSuite(TestB.class);
* suite.addTestSuite(TestC.class);
*
* return suite;
* }
* }
* </pre>
*
* If you have four tests A, B, C, and D, and if you need to run A and B sequentially, then you
* should create a nested test suite with test A and B as follows:
*
* <pre name="code" class="java">
* public class GridJunit3ExampleTestSuite {
* // Standard JUnit3 static suite method.
* public static TestSuite suite() {
* TestSuite suite = new GridJunit3TestSuite("Example Grid Test Suite");
*
* // Nested test suite to run tests A and B sequentially.
* TestSuite nested = new TestSuite("Example Nested Sequential Suite");
*
* nested.addTestSuite(TestA.class);
* nested.addTestSuite(TestB.class);
*
* // Add tests A and B.
* suite.addTest(nested);
*
* // Add other tests.
* suite.addTestSuite(TestC.class);
*
* return suite;
* }
* }
* </pre>
*
* <p>Note that you can also grid-enable existing JUnit3 tests using {@link
* GridifyTest @GridifyTest} annotation which you can attach to your {@code suite()} methods of
* existing test suite. Refer to {@link GridifyTest @GridifyTest} documentation for more
* information.
*
* <p>Also note that some tests can only be executed locally mostly due to some environment issues.
* However they still can benefit from parallel execution with other tests. GridGain supports it via
* {@link GridJunit3LocalTestSuite} suites that can be added to {@code GridJunit3TestSuite}. Refer
* to {@link GridJunit3LocalTestSuite} documentation for more information.
*
* <h1 class="header">Logging</h1>
*
* When running distributed JUnit, all the logging that is done to {@link System#out} or {@link
* System#err} is preserved. GridGain will accumulate all logging that is done on remote nodes, send
* them back to originating node and associate all log statements with their corresponding tests.
* This way, for example, if you are running tests from and IDEA or Eclipse (or any other IDE) you
* would still see the logs as if it was a local run. However, since remote nodes keep all log
* statements done within a single individual test case in memory, you must make sure that enough
* memory is allocated on every node and that individual test cases do not spit out gigabytes of log
* statements. Also note, that logs will be sent back to originating node upon completion of every
* test, so don't be alarmed if you don't see any log statements for a while and then all of them
* appear at once.
*
* <p>GridGain achieves such log transparency via reassigning {@link System#out} or {@link
* System#err} to internal {@link PrintStream} implementation. However, when using {@code Log4J} (or
* any other logging framework) within your tests you must make sure that it is configured with
* {@link ConsoleAppender} and that {@link ConsoleAppender#setFollow(boolean)} attribute is set to
* {@code true}. Logging to files is not supported yet and is planned for next point release.
*
* <p>
*
* <h1 class="header">Test Suite Nesting</h1>
*
* {@code GridJunit3TestSuite} instances can be nested within each other as deep as needed. However
* all nested distributed test suites will be treated just like regular JUnit test suites, and not
* as distributed test suites. This approach becomes convenient when you have several distributed
* test suites that you would like to be able to execute separately in distributed fashion, but at
* the same time you would like to be able to execute them as a part of larger distributed suites.
*
* <p>
*
* <h1 class="header">Configuration</h1>
*
* To run distributed JUnit tests you need to start other instances of GridGain. You can do so by
* running {@code GRIDGAIN_HOME/bin/ggjunit.{sh|bat}} script, which will start default
* configuration. If configuration other than default is required, then use regular {@code
* GRIDGAIN_HOME/bin/ggstart.{sh|bat}} script and pass your own Spring XML configuration file as a
* parameter to the script.
*
* <p>You can use the following configuration parameters to configure distributed test suite
* locally. Note that many parameters can be overridden by setting corresponding VM parameters
* defined in {@link GridTestVmParameters} at VM startup.
*
* <table class="doctable">
* <tr>
* <th>GridConfiguration Method</th>
* <th>Default Value</th>
* <th>Description</th>
* </tr>
* <tr>
* <td>{@link #setDisabled(boolean) setDisabled(boolean)}</td>
* <td>{@code false}</td>
* <td>
* If {@code true} then GridGain will be turned off and suite will run locally.
* This value can be overridden by setting {@link GridTestVmParameters#GRIDGAIN_DISABLED} VM
* parameter to {@code true}. This parameter comes handy when you would like to
* turn off GridGain without changing the actual code.
* </td>
* </tr>
* <tr>
* <td>{@link #setConfigurationPath(String) setConfigurationPath(String)}</td>
* <td>{@link #DFLT_JUNIT_CONFIG DFLT_JUNIT_CONFIG}</td>
* <td>
* Optional path to GridGain Spring XML configuration file for running JUnit tests. This
* property can be overridden by setting {@link GridTestVmParameters#GRIDGAIN_CONFIG} VM
* parameter. Note that the value can be either absolute value or relative to
* ${GRIDGAIN_HOME} installation folder.
* </td>
* </tr>
* <tr>
* <td>{@link #setRouterClassName(String) setRouterClassName(String)}</td>
* <td>{@link #DFLT_JUNIT_ROUTER DFLT_JUNIT_ROUTER}</td>
* <td>
* Optional name of test router class that implements {@link GridTestRouter} interface.
* If not provided, then tests will be routed in round-robin fashion using default
* {@link GridTestRouterAdapter}. The value of this parameter can be overridden by setting
* {@link GridTestVmParameters#GRIDGAIN_TEST_ROUTER} VM parameter to the name of your
* own customer router class.
* </td>
* </tr>
* <tr>
* <td>{@link #setRouterClass(Class) setRouterClass(Class)}</td>
* <td>{@code null}</td>
* <td>
* Same as {@link #setRouterClassName(String) setRouterClassName(String)}, but sets the
* actual class instead of the name.
* </td>
* </tr>
* <tr>
* <td>{@link #setTimeout(long) setTimeout(long)}</td>
* <td>{@code 0} which means that tests will never timeout.</td>
* <td>
* Maximum timeout value in milliseconds after which test suite will return without
* waiting for the remaining tests to complete. This value can be overridden by setting
* {@link GridTestVmParameters#GRIDGAIN_TEST_TIMEOUT} VM parameter to the timeout value
* for the tests.
* </td>
* </tr>
* </table>
*
* @author 2005-2011 Copyright (C) GridGain Systems, Inc.
* @version 3.1.1c.19062011
*/
public class GridJunit3TestSuite extends TestSuite {
/**
* Default GridGain configuration file for JUnits (value is {@code
* config/junit/junit-spring.xml}).
*/
public static final String DFLT_JUNIT_CONFIG = "config/junit/junit-spring.xml";
/**
* Default JUnit test router (value is {@link GridTestRouterAdapter
* GridTestRouterAdapter.class.getName()}).
*/
public static final String DFLT_JUNIT_ROUTER = GridTestRouterAdapter.class.getName();
/** */
private final Collection<String> locTests = new HashSet<String>();
/** JUnit3 JavaAssist proxy. */
private final GridJunit3ProxyFactory factory = new GridJunit3ProxyFactory();
/** Flag indicating whether grid was started in this suite. */
private boolean selfStarted;
/** Junit3 Spring configuration path. */
private String cfgPath =
System.getProperty(GRIDGAIN_CONFIG.name()) == null
? DFLT_JUNIT_CONFIG
: System.getProperty(GRIDGAIN_CONFIG.name());
/**
* Check if GridGain is disabled by checking {@link GridTestVmParameters#GRIDGAIN_DISABLED} system
* property.
*/
private boolean isDisabled = Boolean.getBoolean(GRIDGAIN_DISABLED.name());
/** JUnit test router class name. */
private String routerClsName =
System.getProperty(GRIDGAIN_TEST_ROUTER.name()) == null
? DFLT_JUNIT_ROUTER
: System.getProperty(GRIDGAIN_TEST_ROUTER.name());
/** JUnit test router class. */
private Class<? extends GridTestRouter> routerCls;
/**
* Local suite in case if grid is disabled or if this is a nested suite within other distributed
* suite.
*/
private TestSuite copy;
/** JUnit grid name. */
private String gridName;
/** Test timeout. */
private long timeout =
Long.getLong(GRIDGAIN_TEST_TIMEOUT.name()) == null
? 0
: Long.getLong(GRIDGAIN_TEST_TIMEOUT.name());
/** */
private ClassLoader clsLdr;
/** Empty test suite. */
public GridJunit3TestSuite() {
if (copy == null) {
copy = new TestSuite();
}
}
/** @param name Test suite name. */
public GridJunit3TestSuite(String name) {
super(name);
if (copy == null) {
copy = new TestSuite(name);
}
}
/**
* Test suite for one class.
*
* @param cls Class for test suite.
*/
public GridJunit3TestSuite(Class<? extends TestCase> cls) {
super(cls);
if (copy == null) {
copy = new TestSuite(cls);
}
}
/**
* Test suite for a given test class with specified test name.
*
* @param cls Test class.
* @param name Test name.
*/
public GridJunit3TestSuite(Class<? extends TestCase> cls, String name) {
super(cls, name);
if (copy == null) {
copy = new TestSuite(cls, name);
}
}
/**
* Copies non-distributed test suite into distributed one.
*
* @param suite Test suite to copy.
*/
public GridJunit3TestSuite(TestSuite suite) {
super(suite.getName());
if (copy == null) {
copy = new TestSuite(suite.getName());
}
for (int i = 0; i < suite.testCount(); i++) {
addTest(suite.testAt(i));
}
}
/**
* Empty test suite with given class loader.
*
* @param clsLdr Tests class loader.
*/
public GridJunit3TestSuite(ClassLoader clsLdr) {
this();
assert clsLdr != null;
this.clsLdr = clsLdr;
}
/**
* @param name Test suite name.
* @param clsLdr Tests class loader.
*/
public GridJunit3TestSuite(String name, ClassLoader clsLdr) {
this(name);
assert clsLdr != null;
this.clsLdr = clsLdr;
}
/**
* Test suite for one class.
*
* @param cls Class for test suite.
* @param clsLdr Tests class loader.
*/
public GridJunit3TestSuite(Class<? extends TestCase> cls, ClassLoader clsLdr) {
this(cls);
assert clsLdr != null;
this.clsLdr = clsLdr;
}
/**
* Test suite for a given test class with specified test name.
*
* @param cls Test class.
* @param name Test name.
* @param clsLdr Tests class loader.
*/
public GridJunit3TestSuite(Class<? extends TestCase> cls, String name, ClassLoader clsLdr) {
this(cls, name);
assert clsLdr != null;
this.clsLdr = clsLdr;
}
/**
* Copies non-distributed test suite into distributed one.
*
* @param suite Test suite to copy.
* @param clsLdr Tests class loader.
*/
public GridJunit3TestSuite(TestSuite suite, ClassLoader clsLdr) {
this(suite);
assert clsLdr != null;
this.clsLdr = clsLdr;
}
/**
* Sets path to GridGain configuration file. By default {@code
* {GRIDGAIN_HOME}/config/junit/junit-spring.xml} is used.
*
* @param cfgPath Path to GridGain configuration file.
*/
public void setConfigurationPath(String cfgPath) {
this.cfgPath = cfgPath;
}
/**
* Gets path to GridGain configuration file. By default {@code
* {GRIDGAIN_HOME}/config/junit/junit-spring.xml} is used.
*
* @return Path to GridGain configuration file.
*/
public String getConfigurationPath() {
return cfgPath;
}
/**
* Disables GridGain. If set to {@code true} then this suite will execute locally as if GridGain
* was not in a picture at all.
*
* @param disabled If set to {@code true} then this suite will execute locally as if GridGain was
* not in a picture at all.
*/
public void setDisabled(boolean disabled) {
isDisabled = disabled;
}
/**
* Gets flag indicating whether GridGain should be enabled or not. If set to {@code true} then
* this suite will execute locally as if GridGain was not in a picture at all.
*
* @return Flag indicating whether GridGain should be enabled or not. If set to {@code true} then
* this suite will execute locally as if GridGain was not in a picture at all.
*/
public boolean isDisabled() {
return isDisabled;
}
/**
* Sets name of class for routing JUnit tests. By default {@link #DFLT_JUNIT_ROUTER} class name is
* used.
*
* @param routerClsName Junit test router class name.
*/
public void setRouterClassName(String routerClsName) {
this.routerClsName = routerClsName;
}
/**
* Gets JUnit test router class name.
*
* @return JUnit test router class name.
*/
public String getRouterClassName() {
return routerClsName;
}
/**
* Sets router class. By default {@link GridTestRouterAdapter} is used.
*
* @param routerCls Router class to use for test routing.
*/
public void setRouterClass(Class<? extends GridTestRouter> routerCls) {
this.routerCls = routerCls;
}
/**
* Gets router class used for test routing.
*
* @return Router class used for test routing.
*/
public Class<? extends GridTestRouter> getRouterClass() {
return routerCls;
}
/**
* Gets identical suite for local (non-distributed) execution.
*
* @return Local suite.
*/
public TestSuite getLocalCopy() {
return copy;
}
/** {@inheritDoc} */
@Override
public void setName(String name) {
if (copy != null) {
copy.setName(name);
}
super.setName(name);
}
/**
* Gets timeout for running distributed test suite.
*
* @return Timeout for tests.
*/
public long getTimeout() {
return timeout;
}
/**
* Sets timeout for running distributed test suite. By default, test execution does not expire.
*
* @param timeout Timeout for tests.
*/
public void setTimeout(long timeout) {
this.timeout = timeout;
}
/** {@inheritDoc} */
@Override
public Test testAt(int index) {
return isDisabled ? copy.testAt(index) : super.testAt(index);
}
/** {@inheritDoc} */
@Override
public int testCount() {
return isDisabled ? copy.testCount() : super.testCount();
}
/** {@inheritDoc} */
@Override
public Enumeration<Test> tests() {
return isDisabled ? copy.tests() : super.tests();
}
/**
* The added suite will be always executed locally, but in parallel with other locally or remotely
* running tests. This comes handy for tests that cannot be distributed for some environmental
* reasons, but still would benefit from parallel execution.
*
* <p>Note, that local suites will be executed on local node even if grid topology only allows
* remote nodes.
*
* @param localSuite Test to execute locally in parallel with other local or distributed tests.
*/
@SuppressWarnings({"TypeMayBeWeakened"})
public void addTest(GridJunit3LocalTestSuite localSuite) {
if (!locTests.contains(localSuite.getName())) {
locTests.add(localSuite.getName());
}
addTest((Test) localSuite);
}
/**
* Adds a test to be executed on the grid. In case of test suite, all tests inside of test suite
* will be executed sequentially on some remote node.
*
* @param test Test to add.
*/
@Override
public void addTest(Test test) {
if (copy == null) {
copy = new TestSuite(getName());
}
// Add test to the list of local ones.
if (test instanceof GridJunit3LocalTestSuite) {
String testName = ((TestSuite) test).getName();
if (!locTests.contains(testName)) {
locTests.add(testName);
}
}
if (test instanceof GridJunit3TestSuite) {
copy.addTest(((GridJunit3TestSuite) test).copy);
super.addTest(new GridJunit3TestSuiteProxy(((GridJunit3TestSuite) test).copy, factory));
} else if (test instanceof GridJunit3TestSuiteProxy) {
copy.addTest(((GridJunit3TestSuiteProxy) test).getOriginal());
super.addTest(test);
} else if (test instanceof GridJunit3TestCaseProxy) {
copy.addTest(((GridJunit3TestCaseProxy) test).getGridGainJunit3OriginalTestCase());
super.addTest(test);
} else if (test instanceof TestSuite) {
copy.addTest(test);
super.addTest(new GridJunit3TestSuiteProxy((TestSuite) test, factory));
} else {
assert test instanceof TestCase
: "Test must be either instance of TestSuite or TestCase: " + test;
copy.addTest(test);
super.addTest(factory.createProxy((TestCase) test));
}
}
/**
* Creates JUnit test router. Note that router must have a no-arg constructor.
*
* @return JUnit router instance.
*/
@SuppressWarnings({"unchecked"})
private GridTestRouter createRouter() {
try {
if (routerCls == null) {
routerCls = (Class<? extends GridTestRouter>) Class.forName(routerClsName);
} else {
routerClsName = routerCls.getName();
}
return routerCls.newInstance();
} catch (ClassNotFoundException e) {
throw new GridRuntimeException("Failed to initialize JUnit router: " + routerClsName, e);
} catch (IllegalAccessException e) {
throw new GridRuntimeException("Failed to initialize JUnit router: " + routerClsName, e);
} catch (InstantiationException e) {
throw new GridRuntimeException("Failed to initialize JUnit router: " + routerClsName, e);
}
}
/**
* Runs all tests belonging to this test suite on the grid.
*
* @param result Test result collector.
*/
@Override
public void run(TestResult result) {
if (isDisabled) {
copy.run(result);
} else {
GridTestRouter router = createRouter();
Grid grid = startGrid();
try {
List<GridTaskFuture<?>> futs = new ArrayList<GridTaskFuture<?>>(testCount());
List<GridJunit3SerializableTest> tests =
new ArrayList<GridJunit3SerializableTest>(testCount());
for (int i = 0; i < testCount(); i++) {
Test junit = testAt(i);
GridJunit3SerializableTest test;
if (junit instanceof TestSuite) {
test = new GridJunit3SerializableTestSuite((TestSuite) junit);
} else {
assert junit instanceof TestCase
: "Test must be either TestSuite or TestCase: " + junit;
test = new GridJunit3SerializableTestCase((TestCase) junit);
}
tests.add(test);
if (clsLdr == null) {
clsLdr = U.detectClassLoader(junit.getClass());
}
futs.add(
grid.execute(
new GridJunit3Task(junit.getClass(), clsLdr),
new GridJunit3Argument(router, test, locTests.contains(test.getName())),
timeout));
}
for (int i = 0; i < testCount(); i++) {
GridTaskFuture<?> fut = futs.get(i);
GridJunit3SerializableTest origTest = tests.get(i);
try {
GridJunit3SerializableTest resTest = (GridJunit3SerializableTest) fut.get();
origTest.setResult(resTest);
origTest.getTest().run(result);
} catch (GridException e) {
handleFail(result, origTest, e);
}
}
} finally {
stopGrid();
}
}
}
/**
* Handles test fail.
*
* @param result Test result.
* @param origTest Original JUnit test.
* @param e Exception thrown from grid.
*/
private void handleFail(TestResult result, GridJunit3SerializableTest origTest, Throwable e) {
// Simulate that all tests were run.
origTest.getTest().run(result);
// For the tests suite we assume that all tests failed because
// entire test suite execution failed and there is no way to get
// broken tests.
if (origTest.getTest() instanceof GridJunit3TestSuiteProxy) {
TestSuite suite = (((TestSuite) origTest.getTest()));
for (int j = 0; j < suite.testCount(); j++) {
result.addError(suite.testAt(j), e);
}
} else if (origTest.getTest() instanceof GridJunit3TestCaseProxy) {
result.addError(origTest.getTest(), e);
}
}
/**
* Starts Grid instance. Note that if grid is already started, then it will be looked up and
* returned from this method.
*
* @return Started grid.
*/
private Grid startGrid() {
Properties props = System.getProperties();
gridName = props.getProperty(GRIDGAIN_NAME.name());
if (!props.containsKey(GRIDGAIN_NAME.name()) || G.state(gridName) != GridFactoryState.STARTED) {
selfStarted = true;
// Set class loader for the spring.
ClassLoader curCl = Thread.currentThread().getContextClassLoader();
// Add no-op logger to remove no-appender warning.
Appender app = new NullAppender();
Logger.getRootLogger().addAppender(app);
try {
Thread.currentThread().setContextClassLoader(getClass().getClassLoader());
Grid grid = G.start(cfgPath);
gridName = grid.name();
System.setProperty(GRIDGAIN_NAME.name(), grid.name());
return grid;
} catch (GridException e) {
throw new GridRuntimeException("Failed to start grid: " + cfgPath, e);
} finally {
Logger.getRootLogger().removeAppender(app);
Thread.currentThread().setContextClassLoader(curCl);
}
}
return G.grid(gridName);
}
/** Stops grid only if it was started by this test suite. */
private void stopGrid() {
// Only stop grid if it was started here.
if (selfStarted) {
G.stop(gridName, true);
}
}
}