fix mustache render failure test

scm-webapp/src/main/java/sonia/scm/template/MustacheTemplate.java

@@ -30,17 +30,21 @@
  */
 
 
+
 package sonia.scm.template;
 
 //~--- non-JDK imports --------------------------------------------------------
 
 import com.github.mustachejava.Mustache;
 
+import com.google.common.base.Throwables;
+
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 //~--- JDK imports ------------------------------------------------------------
 
+import java.io.IOException;
 import java.io.Writer;
 
 /**
@@ -81,16 +85,30 @@ public class MustacheTemplate implements Template
    * @param writer
    * @param environment
    * @param model
+   *
+   * @throws IOException
    */
   @Override
-  public void execute(Writer writer, Object model)
+  public void execute(Writer writer, Object model) throws IOException
   {
     if (logger.isDebugEnabled())
     {
       logger.debug("render mustache template at {}", templatePath);
     }
 
+    try
+    {
+
       mustache.execute(writer, model);
+
+    }
+    catch (Exception ex)
+    {
+      Throwables.propagateIfInstanceOf(ex, IOException.class);
+
+      throw new TemplateRenderException(
+        "could not render template ".concat(templatePath), ex);
+    }
   }
 
   //~--- fields ---------------------------------------------------------------

scm-webapp/src/test/java/sonia/scm/template/MustacheTemplateTest.java

@@ -36,10 +36,14 @@ package sonia.scm.template;
 import com.github.mustachejava.DefaultMustacheFactory;
 import com.github.mustachejava.Mustache;
 
+import com.google.common.base.Function;
+
 //~--- JDK imports ------------------------------------------------------------
 
 import java.io.IOException;
 
+import java.util.Map;
+
 /**
  *
  * @author Sebastian Sdorra
@@ -73,6 +77,31 @@ public class MustacheTemplateTest extends TemplateTestBase
     return getTemplate("sonia/scm/template/001.mustache");
   }
 
+  //~--- methods --------------------------------------------------------------
+
+  /**
+   * Method description
+   *
+   *
+   * @param env
+   */
+  @Override
+  protected void prepareEnv(Map<String, Object> env)
+  {
+    env.put("test", new Function<String, String>()
+    {
+
+      @Override
+      public String apply(String input)
+      {
+        throw new UnsupportedOperationException("Not supported yet.");
+      }
+
+    });
+  }
+
+  //~--- get methods ----------------------------------------------------------
+
   /**
    * Method description
    *

scm-webapp/src/test/java/sonia/scm/template/TemplateTestBase.java

@@ -58,6 +58,8 @@ public abstract class TemplateTestBase
    *
    *
    * @return
+   *
+   * @throws IOException
    */
   public abstract Template getFailureTemplate() throws IOException;
 
@@ -101,6 +103,14 @@ public abstract class TemplateTestBase
     execute(template);
   }
 
+  /**
+   * Method description
+   *
+   *
+   * @param env
+   */
+  protected void prepareEnv(Map<String, Object> env) {}
+
   /**
    * Method description
    *
@@ -113,10 +123,12 @@ public abstract class TemplateTestBase
    */
   private String execute(Template template) throws IOException
   {
-    Map<String, String> env = Maps.newHashMap();
+    Map<String, Object> env = Maps.newHashMap();
 
     env.put("name", "marvin");
 
+    prepareEnv(env);
+
     StringWriter writer = new StringWriter();
 
     template.execute(writer, env);

scm-webapp/src/test/resources/sonia/scm/template/003.mustache

@@ -1 +1 @@
-Hello {{/name}}!
+Hello {{test}}!