Compound class names are not supported error in WebDriver
css, java, selenium, selenium-webdriver, webdriver
Solution
This is exactly as expected. If your class name includes a space, WebDriver will see it as a "compound selector". You can either remove the space in your `By.className()` locator, which should still find the elements you're looking for; or you can move to finding by CSS selectors, using something like `By.cssSelector(".cashout_noCash")`, which offer far more flexibility for similar functionality. This is exactly what the exception message says.
Problem
I have a method to count the number of elements in `divs` and to return their number. ``` public int getNumberOfOpenBets() { openBetsSlip = driver.findElement(By.id("form_open_bets")); openBets = openBetsSlip.findElements(By.className(" cashout_noCash")); return openBets.size(); } ``` That's the page source ``` <form id="form_open_bets" method="post" name="form_open_bets"> <input type="hidden" value="" name="action"> <input type="hidden" value="" name="bet_id"> <input type="hidden" value="" name="cashout_price"> <input id="target_page" type="hidden" value="" name="target_page"> <div id="By.id" class="slipWrapper "> <div id="openBets_header"></div> <div id="cashout_1626" class=" cashout_noCash"> <div id="cashout_1625" class=" cashout_noCash"> <div id="cashout_1615" class=" cashout_noCash"> <div id="cashout_1614" class=" cashout_noCash"> <div id="cashout_1613" class=" cashout_noCash"> </div> </div> </div> </div> </div> </div> </form> ``` WebDriver is throwing the following error: Compound class names are not supported. Consider searching for one class name and filtering the results or use CSS selectors. ``` org.openqa.selenium.InvalidSelectorException: Compound class names are not supported. Consider searching for one class name and filtering the results or use CSS selectors. For documentation on this error, please visit: http://seleniumhq.org/exceptions/invalid_selector_exception.html Build info: version: '2.31.0', revision: '1bd294d185a80fa4206dfeab80ba773c04ac33c0', time: '2013-02-27 13:51:26' System info: os.name: 'Windows 7', os.arch: 'amd64', os.version: '6.1', java.version: '1.7.0_17' Driver info: driver.version: unknown at org.openqa.selenium.By.className(By.java:131) at elements.betslip.Betslip.getNumberOfOpenBets(Betslip.java:136) at testSomething(SomethingTest.java:117) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229) at org.junit.runners.ParentRunner.run(ParentRunner.java:309) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197) ``` EDIT: As it turned out `WerbDriver` doesn't support spaces in the class names, omg. Could you guys please help me to use `CSS` selector in this situation in order to find the elements?