added a recipe to specify a custom plugin manager

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

+/*
+ * The MIT License
+ *
+ * Copyright (c) 2011, CloudBees, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package org.jvnet.hudson.test.recipes;
+
+import hudson.PluginManager;
+import org.jvnet.hudson.test.HudsonTestCase;
+
+import java.io.File;
+import java.lang.annotation.Documented;
+import java.lang.annotation.Retention;
+import java.lang.annotation.Target;
+import java.lang.reflect.Constructor;
+
+import static java.lang.annotation.ElementType.*;
+import static java.lang.annotation.RetentionPolicy.*;
+
+/**
+ * Runs the test case with a custom plugin manager.
+ *
+ * @author Kohsuke Kawaguchi
+ */
+@Documented
+@Recipe(WithPluginManager.RunnerImpl.class)
+@Target(METHOD)
+@Retention(RUNTIME)
+public @interface WithPluginManager {
+    Class<? extends PluginManager> value();
+
+    public class RunnerImpl extends Recipe.Runner<WithPluginManager> {
+        private WithPluginManager recipe;
+        @Override
+        public void setup(HudsonTestCase testCase, WithPluginManager recipe) throws Exception {
+            this.recipe = recipe;
+        }
+
+        @Override
+        public void decorateHome(HudsonTestCase testCase, File home) throws Exception {
+            Class<? extends PluginManager> c = recipe.value();
+            Constructor ctr = c.getConstructors()[0];
+
+            // figure out parameters
+            Class[] pt = ctr.getParameterTypes();
+            Object[] args = new Object[pt.length];
+            for (int i=0; i<args.length; i++) {
+                Class t = pt[i];
+                if (t==File.class) {
+                    args[i] = home;
+                    continue;
+                }
+                if (t.isAssignableFrom(testCase.getClass())) {
+                    args[i] = testCase;
+                    continue;
+                }
+            }
+
+            testCase.setPluginManager((PluginManager)ctr.newInstance(args));
+        }
+    }
+
+}