org.springframework.test
Class AbstractDependencyInjectionSpringContextTests

java.lang.Object
  junit.framework.Assert
      junit.framework.TestCase
          org.springframework.test.AbstractSpringContextTests
              org.springframework.test.AbstractDependencyInjectionSpringContextTests

All Implemented Interfaces:

Test

Direct Known Subclasses:

AbstractTransactionalSpringContextTests

public abstract class AbstractDependencyInjectionSpringContextTests

extends AbstractSpringContextTests

Convenient superclass for tests depending on a Spring context. The test instance itself is populated by Dependency Injection.

Really for integration testing, not unit testing. You should not normally use the Spring container for unit tests: simply populate your POJOs in plain JUnit tests!

This supports two modes of populating the test:

• Via Setter Dependency Injection. Simply express dependencies on objects in the test fixture, and they will be satisfied by autowiring by type.
• Via Field Injection. Declare protected variables of the required type which match named beans in the context. This is autowire by name, rather than type. This approach is based on an approach originated by Ara Abrahmian. Setter Dependency Injection is the default: set the "populateProtectedVariables" property to true in the constructor to switch on Field Injection.

This class will normally cache contexts based on a context key: normally the config locations String array describing the Spring resource descriptors making up the context. Unless the setDirty() method is called by a test, the context will not be reloaded, even across different subclasses of this test. This is particularly beneficial if your context is slow to construct, for example if you are using Hibernate and the time taken to load the mappings is an issue.

If you don't want this behavior, you can override the contextKey() method, most likely to return the test class. In conjunction with this you would probably override the getContext method, which by default loads the locations specified in the getConfigLocations() method.

Since:

1.1.1

Author:

Rod Johnson

See Also:

setDirty(), contextKey(), AbstractSpringContextTests.getContext(java.lang.Object), getConfigLocations()

Field Summary

protected ConfigurableApplicationContext	applicationContext Application context this test will run against.
protected String[]	managedVariableNames

Fields inherited from class org.springframework.test.AbstractSpringContextTests

logger

Constructor Summary

AbstractDependencyInjectionSpringContextTests()

Method Summary

protected Object	contextKey() Return a key for this context.
protected abstract String[]	getConfigLocations() Subclasses must implement this method to return the locations of their config files.
int	getLoadCount()
protected void	initManagedVariableNames()
boolean	isPopulateProtectedVariables()
protected ConfigurableApplicationContext	loadContextLocations(String[] locations) Subclasses can invoke this to get a context key for the given location.
protected void	onSetUp() Subclasses can override this method in place of the setUp() method, which is final in this class.
protected void	onTearDown() Subclasses can override this to add custom behavior on teardown.
protected void	populateProtectedVariables()
void	setDirty() Called to say that the applicationContext instance variable is dirty and should be reloaded.
void	setPopulateProtectedVariables(boolean populateFields)
protected void	setUp()
protected void	tearDown() Reload the context if it's marked as dirty.

Methods inherited from class org.springframework.test.AbstractSpringContextTests

contextKeyString, getContext, hasCachedContext, loadContext, setDirty

Methods inherited from class junit.framework.TestCase

countTestCases, createResult, getName, run, run, runBare, runTest, setName, toString

Methods inherited from class junit.framework.Assert

assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertFalse, assertFalse, assertNotNull, assertNotNull, assertNotSame, assertNotSame, assertNull, assertNull, assertSame, assertSame, assertTrue, assertTrue, fail, fail

Methods inherited from class java.lang.Object

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

Field Detail

applicationContext

protected ConfigurableApplicationContext applicationContext

Application context this test will run against.

managedVariableNames

protected String[] managedVariableNames

Constructor Detail

AbstractDependencyInjectionSpringContextTests

public AbstractDependencyInjectionSpringContextTests()

Method Detail

setPopulateProtectedVariables

public void setPopulateProtectedVariables(boolean populateFields)

isPopulateProtectedVariables

public boolean isPopulateProtectedVariables()

getLoadCount

public final int getLoadCount()

setDirty

public void setDirty()

Called to say that the applicationContext instance variable is dirty and should be reloaded. We need to do this if a test has modified the context (for example, by replacing a bean definition).

setUp

protected final void setUp()
                    throws Exception

Throws:

Exception

contextKey

protected Object contextKey()

Return a key for this context. Usually based on config locations, but a subclass overriding buildContext() might want to return its class. Called once and cached.

loadContextLocations

protected ConfigurableApplicationContext loadContextLocations(String[] locations)

Description copied from class: AbstractSpringContextTests

Subclasses can invoke this to get a context key for the given location. This doesn't affect the applicationContext instance variable in this class. Dependency Injection cannot be applied from such contexts.

Overrides:

loadContextLocations in class AbstractSpringContextTests

initManagedVariableNames

protected void initManagedVariableNames()
                                 throws IllegalAccessException

Throws:

IllegalAccessException

populateProtectedVariables

protected void populateProtectedVariables()
                                   throws IllegalAccessException

Throws:

IllegalAccessException

onSetUp

protected void onSetUp()
                throws Exception

Subclasses can override this method in place of the setUp() method, which is final in this class. This implementation does nothing.

Throws:

Exception

tearDown

protected final void tearDown()

Reload the context if it's marked as dirty.

See Also:

onTearDown()

onTearDown

protected void onTearDown()
                   throws Exception

Subclasses can override this to add custom behavior on teardown.

Throws:

Exception

getConfigLocations

protected abstract String[] getConfigLocations()

Subclasses must implement this method to return the locations of their config files. A plain path will be treated as class path location. E.g.: "org/springframework/whatever/foo.xml"

Returns:

an array of config locations