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我下面的JUnit測試java.lang.Exception的：測試類應該有且僅有一個公共構造
package test.java.com.unit;
import com.saucelabs.common.SauceOnDemandAuthentication;
import com.saucelabs.common.SauceOnDemandSessionIdProvider;
import com.saucelabs.junit.Parallelized;
import com.saucelabs.junit.SauceOnDemandTestWatcher;
import org.junit.After;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TestName;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.openqa.selenium.Platform;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.remote.CapabilityType;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.openqa.selenium.remote.RemoteWebDriver;
import java.net.URL;
import java.util.LinkedList;
import static org.junit.Assert.assertEquals;
@RunWith(Parallelized.class)
public class WebDriverTest implements SauceOnDemandSessionIdProvider {
public SauceOnDemandAuthentication authentication = new SauceOnDemandAuthentication("USER_NAME", "ACCESS_KEY");
private String browser;
private String os;
private String version;
public @Rule SauceOnDemandTestWatcher resultReportingTestWatcher = new SauceOnDemandTestWatcher(this, authentication);
public @Rule TestName testName = new TestName();
private WebDriverTest(String os, String version, String browser) {
super();
this.os= os;
this.version= version;
this.browser= browser;
}
@SuppressWarnings({ "unchecked", "rawtypes" })
@Parameterized.Parameters
public static LinkedList browsersStrings() throws Exception {
LinkedList browsers = new LinkedList();
browsers.add(new String[]{Platform.XP.toString(), "26", "firefox"});
browsers.add(new String[]{Platform.WIN8.toString(), "10", "internet explorer"});
browsers.add(new String[]{Platform.MAC.toString(), "5", "safari"});
browsers.add(new String[]{Platform.MAC.toString(), "7", "iphone"});
browsers.add(new String[]{Platform.LINUX.toString(), "30", "chrome"});
browsers.add(new String[]{Platform.ANDROID.toString(), "4.0", "android"});
return browsers;
}
private WebDriver driver;
private String sessionId;
@Before
public void setUp() throws Exception {
DesiredCapabilities capabilities = new DesiredCapabilities();
capabilities.setCapability(CapabilityType.BROWSER_NAME, browser);
capabilities.setCapability(CapabilityType.VERSION, version);
capabilities.setCapability(CapabilityType.PLATFORM, Platform.valueOf(os));
if(browser.equalsIgnoreCase("android"))
{
capabilities.setCapability("device-type", "tablet");
capabilities.setCapability("device-orientation", "portrait");
}
else if(browser.equalsIgnoreCase("iphone"))
{
capabilities.setCapability("device-orientation", "portrait");
}
String name = testName.getMethodName() + ": "+ browser+ " "+ version+ " "+ Platform.valueOf(os);
capabilities.setCapability("name",name);
this.driver= new RemoteWebDriver(new URL("http://"+ authentication.getUsername() + ":"+ authentication.getAccessKey() + "@ondemand.saucelabs.com:80/wd/hub"),capabilities);
this.sessionId= ((RemoteWebDriver)driver).getSessionId().toString();
}
@Override
public String getSessionId() {
return sessionId;
}
@Test
public void webDriver() throws Exception {
// Simple test -just go to the site and verify the title.
driver.get("https://www.google.com/");
assertEquals("To Do List", driver.getTitle());
}
@After
public void tearDown() throws Exception {
driver.quit(); } }
它扔
java.lang.Exception: Test class should have exactly one public constructor
at org.junit.runners.BlockJUnit4ClassRunner.validateOnlyOneConstructor(BlockJUnit4ClassRunner.java:158)
at org.junit.runners.parameterized.BlockJUnit4ClassRunnerWithParameters.validateConstructor(BlockJUnit4ClassRunnerWithParameters.java:88)
at org.junit.runners.BlockJUnit4ClassRunner.collectInitializationErrors(BlockJUnit4ClassRunner.java:127)
at org.junit.runners.ParentRunner.validate(ParentRunner.java:416)
at org.junit.runners.ParentRunner.<init>(ParentRunner.java:84)
at org.junit.runners.BlockJUnit4ClassRunner.<init>(BlockJUnit4ClassRunner.java:65)
at org.junit.runners.parameterized.BlockJUnit4ClassRunnerWithParameters.<init>(BlockJUnit4ClassRunnerWithParameters.java:27)
at org.junit.runners.parameterized.BlockJUnit4ClassRunnerWithParametersFactory.createRunnerForTestWithParameters(BlockJUnit4ClassRunnerWithParametersFactory.java:16)
at org.junit.runners.Parameterized.createRunnersForParameters(Parameterized.java:313)
at org.junit.runners.Parameterized.<init>(Parameterized.java:248)
at com.saucelabs.junit.Parallelized.<init>(Parallelized.java:88)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:422)
at org.junit.internal.builders.AnnotatedBuilder.buildRunner(AnnotatedBuilder.java:104)
at org.junit.internal.builders.AnnotatedBuilder.runnerForClass(AnnotatedBuilder.java:86)
at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:26)
at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
at org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:33)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.<init>(JUnit4TestReference.java:33)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestClassReference.<init>(JUnit4TestClassReference.java:25)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createTest(JUnit4TestLoader.java:48)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.loadTests(JUnit4TestLoader.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:452)
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)
exception while running test. Can someone help finding the solution.
確切地說，這就像錯誤說：**測試類應該只有一個公共構造函數**所以必須有一個公共構造函數....有時候peope提問可以用「請閱讀你的控制檯的輸出「。因爲在我看來這不是一個好問題（答案已經由輸出結果給出），我低估了這個問題，並提出了答案。 –