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POWhy can't Groovy find this program even though it's on my PATH?
 

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    <p><strong>tl;dr:</strong> Groovy cannot find a program (<code>phantomjs</code>, which is on my <code>$PATH</code>) when I attempt to execute the shell command from a class -- it's otherwise finds it just fine from the Groovy Console or from a Grails CLI script. What gives?</p> <p>We have a Grails script to execute JavaScript unit tests in PhantomJS ("the headless WebKit"). When these tests are executed in a stand-alone script (call it <code>grails test-js</code>) things work just fine. The relevant line from the Grails/Gant script was:</p> <pre><code>// where 'jsTests' is a List with the paths to each test def failures = 0 jsTests.each { Process p = "phantomjs lib/phantom-jasmine/lib/run_jasmine_test.coffee file://${it}".execute() failures += p.exitValue() } </code></pre> <p>But since we want this to run as part of the usual <code>grails test-app</code> cycle, we created an implementation of <code>org.codehaus.groovy.grails.test.GrailsTestType</code>. When we get to the part in that implementation where we need to execute the tests, that same code (as above) doesn't work, and Groovy/Grails complains that:</p> <pre><code>java.io.IOException: Cannot run program "phantomjs": error=2, No such file or directory </code></pre> <p>My first thought was that <code>phantomjs</code> was not on my <code>$PATH</code> -- but I know that it is, and again: it worked when run from the Grails/Gant script. So I tried it in the Groovy Console, and it works OK from there.</p> <p>Now, if I switch from <code>phantomjs</code> to <code>/absolute/path/to/phantomjs</code>, then it works fine. But hard-coding an absolute filesystem path into the class cannot be the solution.</p> <p>So: why isn't Groovy finding <code>phantomjs</code> under those circumstances?</p> <p><strong>Update:</strong> I suspect that this might have something to do with my IDE (IntelliJ Idea), as this error doesn't appear to be happening when running this from the command line.</p>
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