Run Specific Tests with Ant Deploy specified by command line or file

Question

When deploying with ant you have the option to specify which tests to run, e.g.

<target name="deploy">
<sf:deploy username="${sf.username}"
           password="${sf.password}"
           serverurl="${sf.serverurl}"
           deployRoot="${dir}"
           testLevel="RunSpecifiedTests"
           maxPoll="300">
   <runTest>Test1</runTest>
   <runTest>Test2</runTest>
</sf:deploy>

We use a shared build script with the team and I'm trying to figure out how to pass a list of tests to run during the deployment from either a file or a parameter. Ideally we could do ant deploy -Dtests=Test1,Test2

I'm a very novice ant users, and I'm really struggling to figure out how to accomplish this.

I'd thought this might work and then I could hook up the list value to a command line parameter, but it complains that sf:deploy doesn't support a nested for element.

<target name="mydeploy">
  <sf:deploy username="${sf.username}"
             password="${sf.password}"
             serverurl="${sf.serverurl}"
             deployRoot="${dir}"
             testLevel="RunSpecifiedTests"
             maxPoll="300">
      <for list="Test1,Test2" param="test">
        <sequential>
            <runTest>"@{test}"</runTest>
        </sequential>
      </for>
  </sf:deploy>
</target> 

Is there anyway to build the list of <runTest> elements dynamically based on a command line input or file so that I don't need to edit my build.xml script everytime I want to do a deploy with a subset of tests?

Perhaps I should just be abandoning ant in favor of something like grunt?

Answer 1

Was able to do this using ant's scripting capability. Now you can do ant deploy -Ddir=src -Dtests=Class1,Class2,Class3

<target name="deploy">
  <script language="javascript"><![CDATA[
    var deployTask = project.createTask('antlib:com.salesforce:deploy');
    deployTask.setUsername(project.getProperty("sf.username"));
    deployTask.setPassword(project.getProperty("sf.password"));
    deployTask.setServerURL(project.getProperty("sf.serverurl"));
    deployTask.setDeployRoot(project.getProperty("dir"));
    deployTask.setTestLevel(project.getProperty("testLevel"));
    deployTask.setMaxPoll("300");
    var tests = project.getProperty('tests');
    if (tests) {
      deployTask.setTestLevel('RunSpecifiedTests');
      tests = tests.split(',');
      for (var i = 0; i < tests.length; i++) {
        var runTest = java.lang.Class.forName(
          "com.salesforce.ant.DeployTask$CodeNameElement"
        ).newInstance();
        runTest.addText(tests[i]);
        deployTask.addRunTest(runTest);
      }
    }
    deployTask.perform();
  ]]></script>
</target>

Answer 2

I don't have enough reputation to comment, but I wanted to say Ralph Callaway's solution worked perfectly for me. I expanded it slightly to cover a few more of the Salesforce Migration Tool's parameters. I thought I'd share that here, and also give props to Ralph:

<target name="deployDynamic">
    <script language="javascript"><![CDATA[
        var deployTask = project.createTask('antlib:com.salesforce:deploy');
        deployTask.setUsername(project.getProperty("sf.username"));
        deployTask.setPassword(project.getProperty("sf.password"));
        deployTask.setServerURL(project.getProperty("sf.serverurl"));
        deployTask.setDeployRoot(project.getProperty("directory"));
        deployTask.setTestLevel(project.getProperty("testLevel"));
        deployTask.setSinglePackage(project.getProperty("singlePackage"));
        deployTask.setIgnoreWarnings(project.getProperty("ignoreWarnings"));
        deployTask.setAutoUpdatePackage(project.getProperty("autoUpdatePackage"));
        deployTask.setAllowMissingFiles(project.getProperty("allowMissingFiles"));
        deployTask.setCheckonly(project.getProperty("checkOnly"));
        deployTask.setMaxPoll("10000");
        var tests = project.getProperty('tests');
        if (tests) {
            deployTask.setTestLevel('RunSpecifiedTests');
            tests = tests.split(',');
            var CodeNameElement = deployTask.getClass().getClassLoader().loadClass("com.salesforce.ant.DeployTask$CodeNameElement");

            for (var i = 0; i < tests.length; i++) {
                var runTest = CodeNameElement.newInstance();
                runTest.addText(tests[i]);
                deployTask.addRunTest(runTest);
            }
        }
        deployTask.perform();
    ]]></script>
</target>