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org.springframework.test
Class AbstractSingleSpringContextTests

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

All Implemented Interfaces:

junit.framework.Test

Direct Known Subclasses:

AbstractDependencyInjectionSpringContextTests

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public abstract class AbstractSingleSpringContextTests
extends AbstractSpringContextTests

Abstract JUnit 3.8 test class that holds and exposes a single Spring ApplicationContext.

This class will 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.

For such standard usage, simply override the getConfigLocations() method and provide the desired config files. For alternative configuration options, see getConfigPath() and getConfigPaths().

If you don't want to load a standard context from an array of config locations, you can override the contextKey() method. In conjunction with this you typically need to override the loadContext(Object) method, which by default loads the locations specified in the getConfigLocations() method.

WARNING: When doing integration tests from within Eclipse, only use classpath resource URLs. Else, you may see misleading failures when changing context locations.

Since:

2.0

Author:

Juergen Hoeller, Rod Johnson, Sam Brannen

See Also:

getConfigLocations(), contextKey(), loadContext(Object), getApplicationContext()

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Field Summary
protected  ConfigurableApplicationContext	applicationContext           Application context this test will run against

 

Fields inherited from class org.springframework.test.ConditionalTestCase
logger

 

Constructor Summary
AbstractSingleSpringContextTests()           Default constructor for AbstractSingleSpringContextTests.
AbstractSingleSpringContextTests(String name)           Constructor for AbstractSingleSpringContextTests with a JUnit name.

 

Method Summary
protected  Object	contextKey()           Return a key for this context.
protected  ConfigurableApplicationContext	createApplicationContext(String[] locations)           Create a Spring ConfigurableApplicationContext for use by this test.
protected  BeanDefinitionReader	createBeanDefinitionReader(GenericApplicationContext context)           Factory method for creating new BeanDefinitionReaders for loading bean definitions into the supplied context.
protected  void	customizeBeanFactory(DefaultListableBeanFactory beanFactory)           Customize the internal bean factory of the ApplicationContext used by this test.
ConfigurableApplicationContext	getApplicationContext()           Return the ApplicationContext that this base class manages; may be null.
protected  String[]	getConfigLocations()           Subclasses can override this method to return the locations of their config files, unless they override contextKey() and loadContext(Object) instead.
protected  String	getConfigPath()           Subclasses can override this method to return a single path to a config file, relative to the concrete test class.
protected  String[]	getConfigPaths()           Subclasses can override this method to return paths to their config files, relative to the concrete test class.
int	getLoadCount()           Return the current number of context load attempts.
protected  ConfigurableApplicationContext	loadContext(Object key)           This implementation assumes a key of type String array and loads a context from the given locations.
protected  ConfigurableApplicationContext	loadContextLocations(String[] locations)           Load a Spring ApplicationContext from the given config locations.
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	prepareApplicationContext(GenericApplicationContext context)           Prepare the GenericApplicationContext used by this test.
protected  void	prepareTestInstance()           Prepare this test instance, for example populating its fields.
protected  void	setDirty()           Called to say that the "applicationContext" instance variable is dirty and should be reloaded.
protected  void	setUp()           This implementation is final.
protected  void	tearDown()           This implementation is final.

 

Methods inherited from class org.springframework.test.AbstractSpringContextTests
addContext, contextKeyString, getContext, hasCachedContext, isContextKeyEmpty, setDirty

 

Methods inherited from class org.springframework.test.ConditionalTestCase
getDisabledTestCount, isDisabledInThisEnvironment, recordDisabled, runBare

 

Methods inherited from class junit.framework.TestCase
countTestCases, createResult, getName, run, run, 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, failNotEquals, failNotSame, failSame, format

 

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

Constructor Detail

AbstractSingleSpringContextTests

public AbstractSingleSpringContextTests()

Default constructor for AbstractSingleSpringContextTests.

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AbstractSingleSpringContextTests

public AbstractSingleSpringContextTests(String name)

Constructor for AbstractSingleSpringContextTests with a JUnit name.

Parameters:

name - the name of this text fixture

Method Detail

setUp

protected final void setUp()
                    throws Exception

This implementation is final. Override onSetUp for custom behavior.

Overrides:

setUp in class junit.framework.TestCase

Throws:

Exception

See Also:

onSetUp()

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prepareTestInstance

protected void prepareTestInstance()
                            throws Exception

Prepare this test instance, for example populating its fields. The context has already been loaded at the time of this callback.

The default implementation does nothing.

Throws:

Exception - in case of preparation failure

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onSetUp

protected void onSetUp()
                throws Exception

Subclasses can override this method in place of the setUp() method, which is final in this class.

The default implementation does nothing.

Throws:

Exception - simply let any exception propagate

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setDirty

protected 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).

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tearDown

protected final void tearDown()
                       throws Exception

This implementation is final. Override onTearDown for custom behavior.

Overrides:

tearDown in class junit.framework.TestCase

Throws:

Exception

See Also:

onTearDown()

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onTearDown

protected void onTearDown()
                   throws Exception

Subclasses can override this to add custom behavior on teardown.

Throws:

Exception - simply let any exception propagate

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contextKey

protected Object contextKey()

Return a key for this context. Default is the config location array as determined by getConfigLocations().

If you override this method, you will typically have to override loadContext(Object) as well, being able to handle the key type that this method returns.

Returns:

the context key

See Also:

getConfigLocations()

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loadContext

protected ConfigurableApplicationContext loadContext(Object key)
                                              throws Exception

This implementation assumes a key of type String array and loads a context from the given locations.

If you override contextKey(), you will typically have to override this method as well, being able to handle the key type that contextKey() returns.

Specified by:

loadContext in class AbstractSpringContextTests

Parameters:

key - the context key

Returns:

the corresponding ApplicationContext instance (new)

Throws:

Exception

See Also:

getConfigLocations()

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loadContextLocations

protected ConfigurableApplicationContext loadContextLocations(String[] locations)
                                                       throws Exception

Load a Spring ApplicationContext from the given config locations.

The default implementation creates a standard GenericApplicationContext, allowing for customizing the internal bean factory through customizeBeanFactory(org.springframework.beans.factory.support.DefaultListableBeanFactory).

Parameters:

locations - the config locations (as Spring resource locations, e.g. full classpath locations or any kind of URL)

Returns:

the corresponding ApplicationContext instance (potentially cached)

Throws:

Exception - if context loading failed

See Also:

createApplicationContext(String[])

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createApplicationContext

protected ConfigurableApplicationContext createApplicationContext(String[] locations)

Create a Spring ConfigurableApplicationContext for use by this test.

The default implementation creates a standard GenericApplicationContext instance, calls the prepareApplicationContext(org.springframework.context.support.GenericApplicationContext) prepareApplicationContext} method and the customizeBeanFactory method to allow for customizing the context and its DefaultListableBeanFactory, populates the context from the specified config locations through the configured BeanDefinitionReader, and finally refreshes the context.

Parameters:

locations - the config locations (as Spring resource locations, e.g. full classpath locations or any kind of URL)

Returns:

the GenericApplicationContext instance

See Also:

loadContextLocations(String[]), customizeBeanFactory(DefaultListableBeanFactory), createBeanDefinitionReader(GenericApplicationContext)

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prepareApplicationContext

protected void prepareApplicationContext(GenericApplicationContext context)

Prepare the GenericApplicationContext used by this test. Called before bean definitions are read.

The default implementation is empty. Can be overridden in subclasses to customize GenericApplicationContext's standard settings.

Parameters:

context - the context for which the BeanDefinitionReader should be created

See Also:

createApplicationContext(java.lang.String[]), GenericApplicationContext.setResourceLoader(org.springframework.core.io.ResourceLoader), AbstractApplicationContext.setId(java.lang.String)

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customizeBeanFactory

protected void customizeBeanFactory(DefaultListableBeanFactory beanFactory)

Customize the internal bean factory of the ApplicationContext used by this test. Called before bean definitions are read.

The default implementation is empty. Can be overridden in subclasses to customize DefaultListableBeanFactory's standard settings.

Parameters:

beanFactory - the newly created bean factory for this context

See Also:

loadContextLocations(java.lang.String[]), createApplicationContext(java.lang.String[]), DefaultListableBeanFactory.setAllowBeanDefinitionOverriding(boolean), DefaultListableBeanFactory.setAllowEagerClassLoading(boolean), AbstractAutowireCapableBeanFactory.setAllowCircularReferences(boolean), AbstractAutowireCapableBeanFactory.setAllowRawInjectionDespiteWrapping(boolean)

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createBeanDefinitionReader

protected BeanDefinitionReader createBeanDefinitionReader(GenericApplicationContext context)

Factory method for creating new BeanDefinitionReaders for loading bean definitions into the supplied context.

The default implementation creates a new XmlBeanDefinitionReader. Can be overridden in subclasses to provide a different BeanDefinitionReader implementation.

Parameters:

context - the context for which the BeanDefinitionReader should be created

Returns:

a BeanDefinitionReader for the supplied context

See Also:

createApplicationContext(String[]), BeanDefinitionReader, XmlBeanDefinitionReader

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getConfigLocations

protected String[] getConfigLocations()

Subclasses can override this method to return the locations of their config files, unless they override contextKey() and loadContext(Object) instead.

A plain path will be treated as class path location, e.g.: "org/springframework/whatever/foo.xml". Note however that you may prefix path locations with standard Spring resource prefixes. Therefore, a config location path prefixed with "classpath:" with behave the same as a plain path, but a config location such as "file:/some/path/path/location/appContext.xml" will be treated as a filesystem location.

The default implementation builds config locations for the config paths specified through getConfigPaths().

Returns:

an array of config locations

See Also:

getConfigPaths(), ResourceLoader.getResource(String)

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getConfigPaths

protected String[] getConfigPaths()

Subclasses can override this method to return paths to their config files, relative to the concrete test class.

A plain path, e.g. "context.xml", will be loaded as classpath resource from the same package that the concrete test class is defined in. A path starting with a slash is treated as fully qualified class path location, e.g.: "/org/springframework/whatever/foo.xml".

The default implementation builds an array for the config path specified through getConfigPath().

Returns:

an array of config locations

See Also:

getConfigPath(), Class.getResource(String)

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getConfigPath

protected String getConfigPath()

Subclasses can override this method to return a single path to a config file, relative to the concrete test class.

A plain path, e.g. "context.xml", will be loaded as classpath resource from the same package that the concrete test class is defined in. A path starting with a slash is treated as fully qualified class path location, e.g.: "/org/springframework/whatever/foo.xml".

The default implementation simply returns null.

Returns:

an array of config locations

See Also:

getConfigPath(), Class.getResource(String)

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getApplicationContext

public final ConfigurableApplicationContext getApplicationContext()

Return the ApplicationContext that this base class manages; may be null.

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getLoadCount

public final int getLoadCount()

Return the current number of context load attempts.