this is also a useful test utility

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@15171 71c3de6d-444a-0410-be80-ed276b4c234a

test/src/main/java/org/jvnet/hudson/test/ExtractResourceSCM.java

+/*
+ * The MIT License
+ *
+ * Copyright (c) 2004-2009, Sun Microsystems, 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;
+
+import hudson.FilePath;
+import hudson.Launcher;
+import hudson.model.AbstractBuild;
+import hudson.model.BuildListener;
+import hudson.scm.NullSCM;
+import hudson.scm.SCM;
+
+import java.io.File;
+import java.io.IOException;
+import java.net.URL;
+
+/**
+ * {@link SCM} useful for testing that extracts the given resource as a zip file.
+ *
+ * @author Kohsuke Kawaguchi
+ */
+public class ExtractResourceSCM extends NullSCM {
+    private final URL zip;
+
+    public ExtractResourceSCM(URL zip) {
+        if(zip==null)
+            throw new IllegalArgumentException();
+        this.zip = zip;
+    }
+
+    @Override
+    public boolean checkout(AbstractBuild build, Launcher launcher, FilePath workspace, BuildListener listener, File changeLogFile) throws IOException, InterruptedException {
+        listener.getLogger().println("Staging "+zip);
+        workspace.unzipFrom(zip.openStream());
+        return true;
+    }
+}