When you want to run Chrome on WebDriver for your Mac, then according to according to the site http://code.google.com/p/selenium/wiki/ChromeDriver you will need to specify the path to the browser to the following location: “/Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome”.
So the Java code for creating a ChromeDriver instance will be:
System.setProperty("webdriver.chrome.driver", "/Applications/Google Chrome.app/Contents/MacOS/Google Chrome");
driver = new ChromeDriver();
When trying to run this I got the following exception.
org.openqa.selenium.remote.UnreachableBrowserException: Could not start a new session. Possible causes are invalid address of the remote server or browser start-up failure. Build info: version: '2.31.0', revision: '1bd294d185a80fa4206dfeab80ba773c04ac33c0', time: '2013-02-27 13:51:26' System info: os.name: 'Mac OS X', os.arch: 'x86_64', os.version: '10.8.3', java.version: '1.6.0_45' Driver info: driver.version: ChromeDriver at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:548) at org.openqa.selenium.remote.RemoteWebDriver.startSession(RemoteWebDriver.java:216) at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:111) at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:115) at org.openqa.selenium.chrome.ChromeDriver.<init>(ChromeDriver.java:161) at org.openqa.selenium.chrome.ChromeDriver.<init>(ChromeDriver.java:107) at com.gjdb.webdriver.WebDriverRunner.doSetUp(WebDriverRunner.java:58) at com.gjdb.webdriver.WebDriverRunner.<init>(WebDriverRunner.java:46) at com.gjdb.webdriver.WebDriverRunnerTest.setup(WebDriverRunnerTest.java:14) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41) at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:27) at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31) at org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184) at org.junit.runners.ParentRunner.run(ParentRunner.java:236) at org.junit.runners.Suite.runChild(Suite.java:128) at org.junit.runners.Suite.runChild(Suite.java:24) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184) at org.junit.runners.ParentRunner.run(ParentRunner.java:236) at org.junit.runner.JUnitCore.run(JUnitCore.java:157) at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:77) at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:195) at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:63) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120) Caused by: org.openqa.selenium.WebDriverException: Timed out waiting for driver server to start. Build info: version: '2.31.0', revision: '1bd294d185a80fa4206dfeab80ba773c04ac33c0', time: '2013-02-27 13:51:26' System info: os.name: 'Mac OS X', os.arch: 'x86_64', os.version: '10.8.3', java.version: '1.6.0_45' Driver info: driver.version: ChromeDriver at org.openqa.selenium.remote.service.DriverService.start(DriverService.java:165) at org.openqa.selenium.remote.service.DriverCommandExecutor.execute(DriverCommandExecutor.java:62) at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:527) ... 43 more Caused by: org.openqa.selenium.net.UrlChecker$TimeoutException: Timed out waiting for [http://localhost:40897/status] to be available after 20002 ms at org.openqa.selenium.net.UrlChecker.waitUntilAvailable(UrlChecker.java:104) at org.openqa.selenium.remote.service.DriverService.start(DriverService.java:163) ... 45 more Caused by: com.google.common.util.concurrent.UncheckedTimeoutException: java.util.concurrent.TimeoutException at com.google.common.util.concurrent.SimpleTimeLimiter.callWithTimeout(SimpleTimeLimiter.java:143) at org.openqa.selenium.net.UrlChecker.waitUntilAvailable(UrlChecker.java:79) ... 46 more Caused by: java.util.concurrent.TimeoutException at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:228) at java.util.concurrent.FutureTask.get(FutureTask.java:91) at com.google.common.util.concurrent.SimpleTimeLimiter.callWithTimeout(SimpleTimeLimiter.java:130) ... 47 more
This I fixed by using the ChromeDriver. Download your version on http://code.google.com/p/chromedriver/downloads/list, unzip it and use it as followed:
System.setProperty("webdriver.chrome.driver", "<unzip location>/chromedriver");
driver = new ChromeDriver();