org.argeo.slc.core/src/main/java/org/argeo/slc/unit/AbstractSpringTestCase.java

   1 package org.argeo.slc.unit;
   2
   3 import junit.framework.TestCase;
   4
   5 import org.springframework.context.ApplicationContext;
   6 import org.springframework.context.ConfigurableApplicationContext;
   7 import org.springframework.context.support.ClassPathXmlApplicationContext;
   8
   9 import org.apache.commons.logging.Log;
  10 import org.apache.commons.logging.LogFactory;
  11
  12 import org.argeo.slc.core.SlcException;
  13 import org.argeo.slc.spring.SpringUtils;
  14
  15 /** Helper for tests using a Spring application co,text. */
  16 public abstract class AbstractSpringTestCase extends TestCase {
  17         protected final Log log = LogFactory.getLog(getClass());
  18         private ConfigurableApplicationContext context;
  19
  20         /**
  21          * Gets (and create if necessary) the application context to use. Default
  22          * implementation uses a class path xml application context and calls
  23          * {@link #getApplicationContextLocation()}.
  24          */
  25         protected ConfigurableApplicationContext getContext() {
  26                 if (context == null) {
  27                         context = new ClassPathXmlApplicationContext(
  28                                         getApplicationContextLocation());
  29                 }
  30                 return context;
  31         }
  32
  33         /** Returns a bean from the underlying context */
  34         protected <T> T getBean(String beanId) {
  35                 return (T) getContext().getBean(beanId);
  36         }
  37
  38         protected <T> T getBean(Class<? extends T> clss) {
  39                 T bean = SpringUtils.loadSingleFromContext(getContext(), clss);
  40                 if (bean == null) {
  41                         throw new SlcException("Cannot retrieve a unique bean of type "
  42                                         + clss);
  43                 } else {
  44                         return bean;
  45                 }
  46         }
  47
  48         /**
  49          * Th location of the application to load. The default implementation
  50          * returns <i>applicationContext.xml</i> found in the same package as the
  51          * test.
  52          */
  53         protected String getApplicationContextLocation() {
  54                 return inPackage("applicationContext.xml");
  55         }
  56
  57         /**
  58          * Prefixes the package of the class after converting the '.' to '/' in
  59          * order to have a resource path.
  60          */
  61         protected String inPackage(String suffix) {
  62                 String prefix = getClass().getPackage().getName().replace('.', '/');
  63                 return prefix + '/' + suffix;
  64         }
  65 }