I'm new to Activiti and I have a simple unit test that is something like:<java>@RunWith(SpringJUnit4ClassRunner.class)@ContextConfiguration(locations = { "classpath:activiti-context.xml", "classpath:test-spring.xml" })public class SimpleTest {    /** JUnit test rule to give us access to Activiti services. */    @Rule    public ActivitiRule activitiRule = new ActivitiRule("activiti-context.xml");    @Test    @Deployment(resources = {"test-process.bpmn20.xml"})    public void testIt() {         …    }}<java>My activiti-context.xml looks like this:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
            http://www.springframework.org/schema/beans/spring-beans.xsd
            http://www.springframework.org/schema/context
            http://www.springframework.org/schema/context/spring-context-3.0.xsd
            http://www.springframework.org/schema/tx
            http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">
    <!– Activates various annotations to be detected in bean classes –>
    <context:annotation-config />
    <!– Loads properties as spring based properties, things like database
         urls, etc. –>
    <bean id="dbProperties"
          class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="ignoreUnresolvablePlaceholders" value="true"/>
        <property name="location" value="classpath:activiti-context.properties" />
    </bean>
    <!–
         DataSource and EntityManager configurations
      –>
    <bean id="activitiDataSource"
          class="org.apache.commons.dbcp.BasicDataSource">
        <property name="driverClassName" value="${database.activiti.driverClassName}"/>
        <property name="url" value="${database.activiti.url}"/>
        <property name="username" value="${database.activiti.username}"/>
        <property name="password" value="${database.activiti.password}"/>
        <property name="validationQuery" value="${database.activiti.validation-query}"/>
        <!– check for idle connections every 10 mins –>
        <property name="timeBetweenEvictionRunsMillis" value="60000" />
        <!– setting -1 will make it check all idle connections–>
        <property name="numTestsPerEvictionRun" value="-1" />
        <!– close connections if they are idle for 10 mins –>
        <property name="minEvictableIdleTimeMillis" value="60000" />
    </bean>
    <!–
         Start of Activiti configurations
      –>
    <bean id="transactionManager"
          class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="activitiDataSource" />
    </bean>
    <bean id="processEngineConfiguration"
          class="org.activiti.spring..SpringProcessEngineConfiguration">
        <!– Common configuration properties –>
        <property name="history" value="audit" />
        <property name="jobExecutorActivate" value="true" />
        <!– Database configuration properties –>
        <!– Will create the Activiti tables if they are not present or if they
             are present will update them accordingly. –>
        <property name="dataSource" ref="activitiDataSource" />
        <property name="databaseSchemaUpdate" value="true" />
        <!– –>
        <property name="transactionManager" ref="transactionManager" />
        <!– JPA configuration properties –>
        <property name="jpaHandleTransaction" value="true" />
        <property name="jpaCloseEntityManager" value="true" />
    </bean>
    <!– –>
    <bean id="processEngine" class="org.activiti.spring.ProcessEngineFactoryBean">
        <property name="processEngineConfiguration" ref="processEngineConfiguration" />
    </bean>
    <!– The Activiti suite of services used within the processing engine. –>
    <bean id="repositoryService" factory-bean="processEngine"
          factory-method="getRepositoryService" />
    <bean id="runtimeService" factory-bean="processEngine"
          factory-method="getRuntimeService" />
    <bean id="taskService" factory-bean="processEngine"
          factory-method="getTaskService" />
    <bean id="historyService" factory-bean="processEngine"
          factory-method="getHistoryService" />
    <bean id="managementService" factory-bean="processEngine"
          factory-method="getManagementService" />
</beans>
And my activiti-context.properties where I put my database properties are:
database.activiti.url=jdbc:h2:mem:activiti;DB_CLOSE_DELAY=1000
database.activiti.driverClassName=org.h2.Driver
database.activiti.username=sa
database.activiti.password=
database.activiti.validation-query=SELECT 1 FROM DUAL
But when I run my unit test it looks like my database properties are not being evaluated:12:03:56,801 [main] DEBUG org.springframework.jdbc.datasource.DataSourceUtils  - Fetching JDBC Connection from DataSource12:03:56,802 [main] ERROR org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl  - Exception while initializing Database connectionorg.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver class '${database.activiti.driverClassName}'        at org.apache.commons.dbcp.BasicDataSource.createConnectionFactory(BasicDataSource.java:1429)        at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1371)        at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:1044)        at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111)        at org.springframework.jdbc.datasource.TransactionAwareDataSourceProxy$TransactionAwareInvocationHandler.invoke(TransactionAwareDataSourceProxy.java:224)        at $Proxy10.getMetaData(Unknown Source)        at org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl.initDatabaseType(ProcessEngineConfigurationImpl.java:654)        at org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl.initDataSource(ProcessEngineConfigurationImpl.java:607)        at org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl.init(ProcessEngineConfigurationImpl.java:440)        at org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl.buildProcessEngine(ProcessEngineConfigurationImpl.java:412)        at org.activiti.spring.SpringProcessEngineConfiguration.buildProcessEngine(SpringProcessEngineConfiguration.java:65)        at org.activiti.engine.impl.test.TestHelper.getProcessEngine(TestHelper.java:227)        at org.activiti.engine.test.ActivitiRule.initializeProcessEngine(ActivitiRule.java:237)        at org.activiti.engine.test.ActivitiRule.starting(ActivitiRule.java:205)        at org.activiti.engine.test.ActivitiRule.startingQuietly(ActivitiRule.java:171)        at org.activiti.engine.test.ActivitiRule.access$000(ActivitiRule.java:86)        at org.activiti.engine.test.ActivitiRule$1.evaluate(ActivitiRule.java:124)        at org.junit.rules.RunRules.evaluate(RunRules.java:20)        at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:74)        at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:82)        at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:72)        at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:240)        at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)        at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)        at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)        at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)        at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)        at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)        at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)        at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)        at org.junit.runners.ParentRunner.run(ParentRunner.java:309)        at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:180)        at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:252)        at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:141)        at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:112)        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)        at java.lang.reflect.Method.invoke(Method.java:597)        at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:189)        at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:165)        at org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:85)        at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:115)        at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:75)Caused by: java.lang.ClassNotFoundException: ${database.activiti.driverClassName}        at java.net.URLClassLoader$1.run(URLClassLoader.java:202)        at java.security.AccessController.doPrivileged(Native Method)        at java.net.URLClassLoader.findClass(URLClassLoader.java:190)        at java.lang.ClassLoader.loadClass(ClassLoader.java:306)        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)        at java.lang.ClassLoader.loadClass(ClassLoader.java:247)        at org.apache.commons.dbcp.BasicDataSource.createConnectionFactory(BasicDataSource.java:1420)        … 43 moreAnybody have any idea what I might be doing wrong?Thanks for any help,Mike