[JENKINS-41196] demonstrate the capability of loading core component jar

jenkinsci · Sep 2, 2017 · 673dc7b · 673dc7b
1 parent 3065532
commit 673dc7b
Showing 1 changed file with 61 additions and 0 deletions.
diff --git a/src/test/java/plugins/RemotingPluginTest.java b/src/test/java/plugins/RemotingPluginTest.java
@@ -0,0 +1,61 @@
+package plugins;
+
+import hudson.util.VersionNumber;
+import org.apache.commons.io.FileUtils;
+import org.jenkinsci.test.acceptance.junit.AbstractJUnitTest;
+import org.jenkinsci.test.acceptance.junit.WithPlugins;
+import org.junit.Ignore;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.TemporaryFolder;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.jar.Attributes;
+import java.util.jar.JarFile;
+
+import static org.hamcrest.CoreMatchers.*;
+import static org.junit.Assert.*;
+
+/**
+ * @author Kohsuke Kawaguchi
+ */
+public class RemotingPluginTest extends AbstractJUnitTest {
+    @Rule
+    public TemporaryFolder tmp = new TemporaryFolder();
+
+    /**
+     * When installing a core component override plugin, we should see that plugin functioning.
+     *
+     * <p>
+     * Run with environment variable: <tt>REMOTING_JPI=path/to/your-locally-build-remoting.hpi
+     * <p>
+     * We check this by:
+     * <ol>
+     *   <li>Testing the version of the plugin as declared installed
+     *   <li>Making sure that the actual jar file in the system is replaced
+     *  </ol>
+     */
+    @Test
+    @WithPlugins({"remoting"})
+    @Ignore // meant to be used to locally demonstrate JENKINS-41196 support
+    public void test() throws IOException, InterruptedException {
+        final String version = "3.12-SNAPSHOT";
+
+        assertThat(trimSnapshot(jenkins.getPlugin("remoting").getVersion()), is(version));
+
+        File jar = tmp.newFile();
+        FileUtils.copyURLToFile(jenkins.url("jnlpJars/slave.jar"),jar);
+        try (JarFile j = new JarFile(jar)) {// this is the copy of remoting jar
+            Attributes main = j.getManifest().getMainAttributes();
+            assertThat(main.getValue("Version"),is(version));
+        }
+    }
+
+    /**
+     * For version number like "1.0-SNAPSHOT (private-921e74fb-kohsuke)" trim off the whitespace and onward
+     */
+    private String trimSnapshot(VersionNumber v) {
+        return v.toString().split(" ")[0];
+    }
+}