| /******************************************************************************* |
| * Copyright (c) 2008, 2009 Matthew Hall and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Matthew Hall - initial API and implementation (bug 218269) |
| * Matthew Hall - bugs 237884, 251003, 332504 |
| * Ovidio Mallo - bugs 240590, 238909, 251003, 247741, 235859 |
| ******************************************************************************/ |
| |
| package org.eclipse.core.tests.databinding.validation; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertNotSame; |
| import static org.junit.Assert.assertSame; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import org.eclipse.core.databinding.DataBindingContext; |
| import org.eclipse.core.databinding.observable.AbstractObservable; |
| import org.eclipse.core.databinding.observable.ChangeEvent; |
| import org.eclipse.core.databinding.observable.Diffs; |
| import org.eclipse.core.databinding.observable.IChangeListener; |
| import org.eclipse.core.databinding.observable.ObservableTracker; |
| import org.eclipse.core.databinding.observable.Realm; |
| import org.eclipse.core.databinding.observable.list.IObservableList; |
| import org.eclipse.core.databinding.observable.list.WritableList; |
| import org.eclipse.core.databinding.observable.value.IObservableValue; |
| import org.eclipse.core.databinding.observable.value.IValueChangeListener; |
| import org.eclipse.core.databinding.observable.value.ValueChangeEvent; |
| import org.eclipse.core.databinding.observable.value.WritableValue; |
| import org.eclipse.core.databinding.validation.MultiValidator; |
| import org.eclipse.core.databinding.validation.ValidationStatus; |
| import org.eclipse.core.internal.databinding.validation.ValidatedObservableValue; |
| import org.eclipse.core.runtime.AssertionFailedException; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.jface.databinding.conformance.util.CurrentRealm; |
| import org.eclipse.jface.databinding.conformance.util.StaleEventTracker; |
| import org.eclipse.jface.databinding.conformance.util.ValueChangeEventTracker; |
| import org.eclipse.jface.tests.databinding.AbstractDefaultRealmTestCase; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| public class MultiValidatorTest extends AbstractDefaultRealmTestCase { |
| private DependencyObservableValue dependency; |
| private MultiValidator validator; |
| private IObservableValue validationStatus; |
| |
| @Before |
| public void setUp() throws Exception { |
| super.setUp(); |
| dependency = new DependencyObservableValue(null, IStatus.class); |
| validator = new MultiValidator() { |
| @Override |
| protected IStatus validate() { |
| return (IStatus) dependency.getValue(); |
| } |
| }; |
| validationStatus = validator.getValidationStatus(); |
| } |
| |
| @Test |
| public void testConstructor_NullArgument() { |
| try { |
| new MultiValidator(null) { |
| @Override |
| protected IStatus validate() { |
| return null; |
| } |
| }; |
| fail("Expected AssertionFailedException"); |
| } catch (AssertionFailedException expected) { |
| } |
| } |
| |
| @Test |
| public void testGetValidationStatus_NullResultYieldsOKStatus() { |
| IStatus status = (IStatus) validationStatus.getValue(); |
| assertTrue(status.isOK()); // null -> OK |
| } |
| |
| @Test |
| public void testGetValidationStatus_ExceptionThrownYieldsErrorStatus() { |
| final RuntimeException e = new RuntimeException("message"); |
| validator = new MultiValidator() { |
| @Override |
| protected IStatus validate() { |
| throw e; |
| } |
| }; |
| assertEquals(ValidationStatus.error("message", e), validator.getValidationStatus().getValue()); |
| } |
| |
| @Test |
| public void testGetValidationStatus_TracksWithDependency() { |
| IStatus newStatus = ValidationStatus.error("error"); |
| dependency.setValue(newStatus); |
| assertEquals(newStatus, validationStatus.getValue()); |
| } |
| |
| @Test |
| public void testInit_AddsValidationProducer() { |
| DataBindingContext dbc = new DataBindingContext(); |
| dbc.addValidationStatusProvider(validator); |
| assertTrue(dbc.getValidationStatusProviders().contains(validator)); |
| } |
| |
| @Test |
| public void testObserveValidatedValue_NullArgument() { |
| try { |
| validator.observeValidatedValue(null); |
| fail("Expected AssertionFailedException"); |
| } catch (AssertionFailedException expected) { |
| } |
| } |
| |
| @Test |
| public void testObserveValidatedValue_WrongRealm() { |
| Realm otherRealm = new CurrentRealm(true); |
| try { |
| validator.observeValidatedValue(new WritableValue(otherRealm)); |
| fail("Expected AssertionFailedException"); |
| } catch (AssertionFailedException expected) { |
| } |
| } |
| |
| @Test |
| public void testObserveValidatedValue_ReturnValue() { |
| WritableValue target = new WritableValue(); |
| ValidatedObservableValue validated = (ValidatedObservableValue) validator.observeValidatedValue(target); |
| |
| target.setValue(new Object()); |
| assertEquals(target.getValue(), validated.getValue()); |
| |
| dependency.setValue(ValidationStatus.error("error")); |
| assertFalse(validated.isStale()); |
| |
| target.setValue(new Object()); |
| assertTrue(validated.isStale()); |
| assertFalse(target.getValue().equals(validated.getValue())); |
| |
| dependency.setValue(ValidationStatus.info("info")); // considered valid |
| assertEquals(target.getValue(), validated.getValue()); |
| assertFalse(validated.isStale()); |
| } |
| |
| @Test |
| public void testBug237884_DisposeCausesNPE() { |
| MultiValidator validator = new MultiValidator() { |
| @Override |
| protected IStatus validate() { |
| return ValidationStatus.ok(); |
| } |
| }; |
| try { |
| validator.dispose(); |
| } catch (NullPointerException e) { |
| fail("Bug 237884: MultiValidator.dispose() causes NPE"); |
| } |
| } |
| |
| @Test |
| public void testBug237884_MultipleDispose() { |
| validator.dispose(); |
| validator.dispose(); |
| } |
| |
| @Test |
| public void testBug237884_Comment3_ValidationStatusAsDependencyCausesStackOverflow() { |
| dependency = new DependencyObservableValue(new Object(), Object.class); |
| validator = new MultiValidator() { |
| private int counter; |
| |
| @Override |
| protected IStatus validate() { |
| ObservableTracker.getterCalled(dependency); |
| return ValidationStatus.info("info " + counter++); |
| } |
| }; |
| validationStatus = validator.getValidationStatus(); |
| |
| // bug behavior: the validation status listener causes the validation |
| // status observable to become a dependency of the validator. |
| validationStatus.addChangeListener(new IChangeListener() { |
| @Override |
| public void handleChange(ChangeEvent event) { |
| ObservableTracker.getterCalled(validationStatus); |
| } |
| }); |
| dependency.setValue(new Object()); |
| |
| // at this point, because the validation status observable is a |
| // dependency, changes to the validation status cause revalidation in an |
| // infinite recursion. |
| try { |
| dependency.setValue(new Object()); |
| } catch (StackOverflowError e) { |
| fail("Bug 237884: Accessing MultiValidator validation status from within listener " |
| + "causes infinite recursion"); |
| } |
| } |
| |
| @Test |
| public void testBug237884_ValidationStatusListenerCausesLoopingDependency() { |
| validationStatus.addChangeListener(new IChangeListener() { |
| @Override |
| public void handleChange(ChangeEvent event) { |
| ObservableTracker.getterCalled(validationStatus); |
| } |
| }); |
| assertFalse(validator.getTargets().contains(validationStatus)); |
| // trigger revalidation |
| dependency.setValue(ValidationStatus.info("info")); |
| assertFalse(validator.getTargets().contains(validationStatus)); |
| } |
| |
| @Test |
| public void testRevalidate() { |
| // Use this as an easy way to inject a validation status into the |
| // validator without using an observable value. |
| final IStatus[] status = new IStatus[] { ValidationStatus.ok() }; |
| |
| class MyMultiValidator extends MultiValidator { |
| @Override |
| protected IStatus validate() { |
| return status[0]; |
| } |
| |
| protected void callRevalidate() { |
| revalidate(); |
| } |
| } |
| |
| MyMultiValidator validator = new MyMultiValidator(); |
| |
| // Initially, the validation status should always be in sync. |
| assertSame(status[0], validator.getValidationStatus().getValue()); |
| |
| // When the validation status depends on something different than the |
| // IObservable dependency set, the MultiValidator cannot track those |
| // changes automatically so the validation status will get inconsistent |
| // without further ado. |
| status[0] = ValidationStatus.error(""); |
| assertNotSame(status[0], validator.getValidationStatus().getValue()); |
| |
| // By calling makeDirty(), the validation status should be updated. |
| validator.callRevalidate(); |
| assertSame(status[0], validator.getValidationStatus().getValue()); |
| } |
| |
| @Test |
| public void testBug237884_ValidationStatusAccessDuringValidationCausesLoopingDependency() { |
| validator = new MultiValidator() { |
| @Override |
| protected IStatus validate() { |
| ObservableTracker.getterCalled(getValidationStatus()); |
| return (IStatus) dependency.getValue(); |
| } |
| }; |
| // trigger revalidation |
| dependency.setValue(ValidationStatus.info("info")); |
| assertFalse(validator.getTargets().contains(validationStatus)); |
| } |
| |
| @Test |
| public void testBug240590_ValidationStatusSetWhileTrackingDependencies() { |
| final IObservableValue noDependency = new WritableValue(); |
| validationStatus.addValueChangeListener(new IValueChangeListener() { |
| @Override |
| public void handleValueChange(ValueChangeEvent event) { |
| // Explicitly track the faked dependency. |
| ObservableTracker.getterCalled(noDependency); |
| } |
| }); |
| |
| // Trigger a validation change. |
| dependency.setValue(ValidationStatus.error("new error")); |
| |
| // Make sure the faked dependency has not been included in the |
| // dependency set (the validator's targets). |
| assertFalse(validator.getTargets().contains(noDependency)); |
| } |
| |
| @Test |
| public void testValidationStaleness() { |
| ValueChangeEventTracker validationChangeCounter = ValueChangeEventTracker.observe(validationStatus); |
| |
| StaleEventTracker validationStaleCounter = StaleEventTracker.observe(validationStatus); |
| |
| // Assert initial state. |
| assertFalse(validationStatus.isStale()); |
| assertEquals(0, validationChangeCounter.count); |
| assertEquals(0, validationStaleCounter.count); |
| |
| // Change to a stale state. |
| dependency.setStale(true); |
| assertTrue(validationStatus.isStale()); |
| assertEquals(0, validationChangeCounter.count); |
| assertEquals(1, validationStaleCounter.count); // +1 |
| |
| // The validation status is already stale so even if it gets another |
| // stale event from its dependencies, it should not propagate that |
| // event. |
| dependency.fireStale(); |
| assertTrue(validationStatus.isStale()); |
| assertEquals(0, validationChangeCounter.count); |
| assertEquals(1, validationStaleCounter.count); |
| |
| // Change the validation status while remaining stale. |
| dependency.setValue(ValidationStatus.error("e1")); |
| assertTrue(validationStatus.isStale()); |
| assertEquals(1, validationChangeCounter.count); // +1 |
| assertEquals(1, validationStaleCounter.count); |
| |
| // Move back to a non-stale state. |
| dependency.setStale(false); |
| assertFalse(dependency.isStale()); |
| assertFalse(validationStatus.isStale()); |
| assertEquals(2, validationChangeCounter.count); // +1 |
| assertEquals(1, validationStaleCounter.count); |
| } |
| |
| @Test |
| public void testStatusValueChangeWhileValidationStale() { |
| // Change to a stale state. |
| dependency.setStale(true); |
| assertTrue(validationStatus.isStale()); |
| |
| // Even if the validation is stale, we want the current value to be |
| // tracked. |
| dependency.setValue(ValidationStatus.error("e1")); |
| assertTrue(validationStatus.isStale()); |
| assertEquals(dependency.getValue(), validationStatus.getValue()); |
| dependency.setValue(ValidationStatus.error("e2")); |
| assertTrue(validationStatus.isStale()); |
| assertEquals(dependency.getValue(), validationStatus.getValue()); |
| } |
| |
| @Test |
| public void testValidationStatusBecomesStaleThroughNewDependency() { |
| final DependencyObservableValue nonStaleDependency = new DependencyObservableValue(ValidationStatus.ok(), |
| IStatus.class); |
| nonStaleDependency.setStale(false); |
| |
| final DependencyObservableValue staleDependency = new DependencyObservableValue(ValidationStatus.ok(), |
| IStatus.class); |
| staleDependency.setStale(true); |
| |
| validator = new MultiValidator() { |
| @Override |
| protected IStatus validate() { |
| if (nonStaleDependency.getValue() != null) { |
| return (IStatus) nonStaleDependency.getValue(); |
| } |
| return (IStatus) staleDependency.getValue(); |
| } |
| }; |
| validationStatus = validator.getValidationStatus(); |
| |
| assertFalse(validationStatus.isStale()); |
| |
| StaleEventTracker validationStaleCounter = StaleEventTracker.observe(validationStatus); |
| assertEquals(0, validationStaleCounter.count); |
| |
| // Setting the status of the non-stale dependency to null leads to the |
| // new stale dependency being accessed which in turn should trigger a |
| // stale event. |
| nonStaleDependency.setValue(null); |
| assertTrue(validationStatus.isStale()); |
| assertEquals(1, validationStaleCounter.count); |
| } |
| |
| @Test |
| public void testBug251003_CompareDependenciesByIdentity() { |
| DependencyObservable dependency1 = new DependencyObservable(); |
| DependencyObservable dependency2 = new DependencyObservable(); |
| assertEquals(dependency1, dependency2); |
| assertNotSame(dependency1, dependency2); |
| |
| final List<DependencyObservable> dependencies = new ArrayList<DependencyObservable>(); |
| dependencies.add(dependency1); |
| validator = new MultiValidator() { |
| @Override |
| protected IStatus validate() { |
| for (Iterator<DependencyObservable> it = dependencies.iterator(); it.hasNext();) |
| ObservableTracker.getterCalled(it.next()); |
| return null; |
| } |
| }; |
| |
| // force init validation |
| validationStatus = validator.getValidationStatus(); |
| |
| IObservableList targets = validator.getTargets(); |
| assertEquals(1, targets.size()); |
| assertSame(dependency1, targets.get(0)); |
| |
| dependencies.set(0, dependency2); |
| dependency1.fireChange(); // force revalidate |
| |
| assertEquals(1, targets.size()); |
| assertSame(dependency2, targets.get(0)); |
| } |
| |
| @Test |
| public void testBug251003_MissingDependencies() { |
| final WritableList emptyListDependency = new WritableList(); |
| validator = new MultiValidator() { |
| @Override |
| protected IStatus validate() { |
| ObservableTracker.getterCalled(emptyListDependency); |
| return null; |
| } |
| }; |
| |
| // Make sure the validation above is really triggered. |
| validator.getValidationStatus().getValue(); |
| |
| // emptyListDependency should be included in the dependency set. |
| assertTrue(validator.getTargets().contains(emptyListDependency)); |
| } |
| |
| @Test |
| public void testBug357568_MultiValidatorTargetAsDependency() { |
| validator = new MultiValidator() { |
| @Override |
| protected IStatus validate() { |
| ObservableTracker.getterCalled(dependency); |
| ObservableTracker.getterCalled(new DependencyObservable()); |
| ObservableTracker.getterCalled(validator.getTargets()); |
| return null; |
| } |
| }; |
| |
| validator.getValidationStatus().getValue(); |
| dependency.setValue(ValidationStatus.info("foo")); |
| } |
| |
| @Test |
| public void testBug357568_ValidationStatusAsDependency() { |
| validator = new MultiValidator() { |
| @Override |
| protected IStatus validate() { |
| return (IStatus) validator.getValidationStatus().getValue(); |
| } |
| }; |
| |
| validator.getValidationStatus(); |
| } |
| |
| private static class DependencyObservableValue extends WritableValue { |
| private boolean stale = false; |
| |
| public DependencyObservableValue(Object initialValue, Object valueType) { |
| super(initialValue, valueType); |
| } |
| |
| @Override |
| public boolean isStale() { |
| ObservableTracker.getterCalled(this); |
| return stale; |
| } |
| |
| public void setStale(boolean stale) { |
| if (this.stale != stale) { |
| this.stale = stale; |
| if (stale) { |
| fireStale(); |
| } else { |
| fireValueChange(Diffs.createValueDiff(doGetValue(), doGetValue())); |
| } |
| } |
| } |
| |
| @Override |
| protected void fireStale() { |
| super.fireStale(); |
| } |
| } |
| |
| private static class DependencyObservable extends AbstractObservable { |
| public DependencyObservable() { |
| super(Realm.getDefault()); |
| } |
| |
| @Override |
| public boolean isStale() { |
| return false; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (obj == this) |
| return true; |
| if (obj == null) |
| return false; |
| return getClass() == obj.getClass(); |
| } |
| |
| @Override |
| public int hashCode() { |
| return getClass().hashCode(); |
| } |
| |
| @Override |
| protected void fireChange() { |
| // TODO Auto-generated method stub |
| super.fireChange(); |
| } |
| } |
| } |