legacy/org.argeo.slc.spring/ext/test/org/argeo/slc/core/test/context/AbstractInternalSpringTestCase.java

   1 package org.argeo.slc.core.test.context;
   2
   3 import java.util.Map;
   4
   5 import junit.framework.TestCase;
   6
   7 import org.argeo.api.cms.CmsLog;
   8 import org.argeo.slc.SlcException;
   9 import org.springframework.beans.factory.BeanFactoryUtils;
  10 import org.springframework.beans.factory.ListableBeanFactory;
  11 import org.springframework.context.ConfigurableApplicationContext;
  12 import org.springframework.context.support.ClassPathXmlApplicationContext;
  13
  14 /** Helper for tests using a Spring application context. */
  15 public abstract class AbstractInternalSpringTestCase extends TestCase {
  16         protected final CmsLog log = CmsLog.getLog(getClass());
  17         private ConfigurableApplicationContext context;
  18
  19         /**
  20          * Gets (and create if necessary) the application context to use. Default
  21          * implementation uses a class path xml application context and calls
  22          * {@link #getApplicationContextLocation()}.
  23          */
  24         protected ConfigurableApplicationContext getContext() {
  25                 if (context == null) {
  26                         context = new ClassPathXmlApplicationContext(
  27                                         getApplicationContextLocation());
  28                 }
  29                 return context;
  30         }
  31
  32         /** Returns a bean from the underlying context */
  33         @SuppressWarnings(value = { "unchecked" })
  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 = 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
  66         @SuppressWarnings(value = { "unchecked" })
  67         protected <T> T loadSingleFromContext(ListableBeanFactory context,
  68                         Class<T> clss) {
  69                 Map<String, T> beans = BeanFactoryUtils.beansOfTypeIncludingAncestors(
  70                                 context, clss, false, false);
  71                 if (beans.size() == 1) {
  72                         return beans.values().iterator().next();
  73                 } else if (beans.size() > 1) {
  74                         if (log.isDebugEnabled()) {
  75                                 log
  76                                                 .debug(("Found more that on bean for type " + clss
  77                                                                 + ": " + beans.keySet()));
  78                         }
  79                         return null;
  80                 } else {
  81                         return null;
  82                 }
  83         }
  84
  85 }