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[JENKINS-20559] - A direct test for the bug

Signed-off-by: Oleg Nenashev <o.v.nenashev@gmail.com>
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oleg-nenashev committed Jun 1, 2014
1 parent ef943a3 commit c5d01b0645a12e64e2a256641b18989c2f68eeea
Showing with 129 additions and 0 deletions.
  1. +129 −0 test/src/test/java/hudson/ProcStarterTest.java
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/*
* The MIT License
*
* Copyright 2013 Oleg Nenashev <nenashev@synopsys.com>, Synopsys 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 hudson;

import hudson.model.AbstractBuild;
import hudson.model.AbstractProject;
import hudson.model.BuildListener;
import hudson.model.FreeStyleProject;
import hudson.model.Run;
import hudson.tasks.BuildWrapper;
import hudson.tasks.BuildWrapperDescriptor;
import java.io.IOException;
import org.jvnet.hudson.test.Bug;
import hudson.Launcher.DecoratedLauncher;
import org.junit.Rule;
import org.junit.Test;
import org.jvnet.hudson.test.JenkinsRule;

/**
* Contains tests for {@link ProcStarter} class.
* @author Oleg Nenashev <nenashev@synopsys.com>, Synopsys Inc.
* @since TODO: define a version
*/
public class ProcStarterTest {

@Rule
public JenkinsRule rule = new JenkinsRule();

@Test
@Bug(20559)
public void testNonInitializedEnvsNPE() throws Exception {
// Create nodes and other test stuff
rule.hudson.setNumExecutors(0);
rule.createSlave();

// Create a job with test build wrappers
FreeStyleProject project = rule.createFreeStyleProject();
project.getBuildWrappersList().add(new DecoratedWrapper());
project.getBuildWrappersList().add(new EchoWrapper());

// Run the build. If NPE occurs, the test will fail
rule.buildAndAssertSuccess(project);
}

/**
* A stub descriptor for {@link BuildWrapper}s.
*/
public abstract static class TestWrapperDescriptor extends BuildWrapperDescriptor {

@Override
public boolean isApplicable(AbstractProject<?, ?> ap) {
return true;
}

@Override
public String getDisplayName() {
return "testStub";
}
}

/**
* A wrapper, which contains a nested launch.
*/
public static class EchoWrapper extends BuildWrapper {

@Override
public Environment setUp(AbstractBuild build, Launcher launcher, BuildListener listener) throws IOException, InterruptedException {
Launcher.ProcStarter starter = launcher.launch().cmds("echo", "Hello");
starter.start();
starter.join();
return new Environment() {
};
}

@Extension
public static class DescriptorImpl extends TestWrapperDescriptor {
}
};

/**
* A wrapper, which decorates launchers.
*/
public static class DecoratedWrapper extends BuildWrapper {

@Override
public Launcher decorateLauncher(AbstractBuild build, Launcher launcher, BuildListener listener) throws IOException, InterruptedException, Run.RunnerAbortedException {
final BuildListener l = listener;
return new DecoratedLauncher(launcher) {
@Override
public Proc launch(Launcher.ProcStarter starter) throws IOException {
String[] envs = starter.envs(); // Finally, call envs()
l.getLogger().println("[DecoratedWrapper]: Number of environment variables is "+envs.length); // Fail on null
return super.launch(starter);
}
};
}

@Override
public Environment setUp(AbstractBuild build, Launcher launcher, BuildListener listener) throws IOException, InterruptedException {
return new Environment() {
};
}

@Extension
public static class DescriptorImpl extends TestWrapperDescriptor {
}
};
}

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