added a test recipe to install a plugin.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@13933 71c3de6d-444a-0410-be80-ed276b4c234a

test/src/main/java/org/jvnet/hudson/test/recipes/WithPlugin.java

+package org.jvnet.hudson.test.recipes;
+
+import org.jvnet.hudson.test.HudsonTestCase;
+import org.apache.commons.io.FileUtils;
+
+import java.io.File;
+import java.lang.annotation.Documented;
+import static java.lang.annotation.ElementType.METHOD;
+import java.lang.annotation.Retention;
+import static java.lang.annotation.RetentionPolicy.RUNTIME;
+import java.lang.annotation.Target;
+import java.net.URL;
+
+/**
+ * Installs the specified plugin before launching Hudson. 
+ *
+ * @author Kohsuke Kawaguchi
+ */
+@Documented
+@Recipe(WithPlugin.RunnerImpl.class)
+@Target(METHOD)
+@Retention(RUNTIME)
+public @interface WithPlugin {
+    /**
+     * Name of the plugin.
+     *
+     * For now, this has to be one of the plugins statically available in resources
+     * "/plugins/NAME". TODO: support retrieval through Maven repository.
+     */
+    String value();
+
+    public class RunnerImpl extends Recipe.Runner<WithPlugin> {
+        private WithPlugin a;
+
+        @Override
+        public void setup(HudsonTestCase testCase, WithPlugin recipe) throws Exception {
+            a = recipe;
+        }
+
+        @Override
+        public void decorateHome(HudsonTestCase testCase, File home) throws Exception {
+            URL res = getClass().getClassLoader().getResource("plugins/" + a.value());
+            FileUtils.copyURLToFile(res,new File(home,"plugins/"+a.value()));
+        }
+    }
+}

test/src/test/java/hudson/PluginManagerTest.java

 package hudson;
 
 import org.jvnet.hudson.test.HudsonTestCase;
+import org.jvnet.hudson.test.recipes.WithPlugin;
 import org.apache.commons.io.FileUtils;
 import com.gargoylesoftware.htmlunit.html.HtmlPage;
 import com.gargoylesoftware.htmlunit.html.HtmlForm;
@@ -26,4 +27,9 @@ public class PluginManagerTest extends HudsonTestCase {
 
         assertTrue( new File(hudson.getRootDir(),"plugins/tasks.hpi").exists() );
     }
+
+    @WithPlugin("tasks.hpi")
+    public void testWithRecipe() throws Exception {
+        assertNotNull(hudson.getPlugin("tasks"));
+    }
 }