how to set path, when repo is downloaded using gradle - maven

Question

I am using gradle to download the selenium chrome driver from maven
webtestsCompile 'org.seleniumhq.selenium:selenium-chrome-driver:2.32.0'
I am trying to use this directly and I see that I get this error :
Caused by:
java.lang.IllegalStateException: The path to the driver executable must be set by the webdriver.chrome.driver system property; for more information, see http://code.google.com/p/selenium/wiki/ChromeDriver. The latest version can be downloaded from http://code.google.com/p/chromedriver/downloads/list
I have looked up a couple of questions from stack-overflow and other places it requires me to set the value of the property webdriver.chrome.driver to the location where I have downloaded with some-thing like this :
System.setProperty("webdriver.chrome.driver", "path to chrome-driver");
I am wondering what is the best way to go about this ?
EDIT 1:
I verified the java.class.path a snippet of this path looks like this :
/home/bhavya/.gradle/caches/artifacts-26/filestore/org.seleniumhq.selenium/selenium-chrome-driver/2.32.0/jar/14a4e8e32a4129c682c67381f5d7bf11f2327e1/selenium-chrome-driver-2.32.0.jar
This looks like the selenium-chrome-driver is present in the java.class.path.
Edit 2 :
I would want the chrome driver to work irrespective of the operating system that I am using, currently I am on a ubuntu box but a lot of this will get tested on a windows box. When I hard coded the value of the webdriver.chrome.driver to the value in EDIT 1, I am facing the following issue :
java.lang.IllegalStateException: The driver is not executable: /home/bhavya/.gradle/caches/artifacts-26/filestore/org.seleniumhq.selenium/selenium-chrome-driver/2.32.0/jar/14a4e8e32a4129c682c67381f5d7bf11f2327e1/selenium-chrome-driver-2.32.0.jar
Edit 3 :
Task within which I am running the test suite --
task webs(type: Test, dependsOn: updateNodeModules) {
testClassesDir = sourceSets.webtests.output.classesDir
classpath = sourceSets.webtests.runtimeClasspath
def javaHomeBin = new File(System.getProperty("java.home"), "bin");
def javaExec = new File(javaHomeBin, "java").getAbsolutePath();
systemProperties['jar.path'] = jar.archivePath
if(project.hasProperty('url')){
println" url passed as variable is $url"
systemProperties["selenium.webdriver.url"] = "$url"
}
systemProperties["selenium.webbrowser.type"] = "firefox"
if(project.hasProperty('browser')){
println "the browser passed is $browser"
systemProperties["selenium.webbrowser.type"] = "$browser"
}
include '**/UserEditControllerWebTest.class'
doFirst {
println " iterator is $it"
def chrome=configurations.testRuntime.find {
it.name.contains("selenium-chrome-driver")
}.path
println " chrome driver path is $chrome"
systemProperties["webdriver.chrome.driver"]= "$chrome"
}
}

Answer 1

Assuming that you need to set this system property for your tests, you can do something like:
test.doFirst {
systemProperty "webdriver.chrome.driver",
classpath.find {
it.name.contains("selenium-chrome-driver")
}.path
}