@Test Annotation属性- dependsOnMethods属性

目录

语法

如果test1（）失败了怎么办？test2（）测试会发生什么，因为它依赖于test1？

如果我们在test1（）方法上不使用@Test注释，但在test 2（）测试用例上仍然使用@Test（dependsOnMethod =“test1”），会怎么样？

如果我们在dependsOnMethods属性中传递一个方法列表会怎么样？他们的处决有命令吗？

如何在属于不同类的测试用例上使用dependsOnMethods？

---

本文将详细讨论@Test注释的dependsOnMethods属性。

这个属性有什么作用？dependsOnMethods属性的用途是什么？dependsOnMethods用于依赖于另一个测试用例执行的测试用例。因此，后一个测试用例将首先执行，因为它的执行对于运行依赖于它的用例是必要的。

语法

---

dependsOnMethod属性将接受一个字符串数组，如{“test1”，“test 2”}，如果一个测试只依赖于另一个测试，你也可以传递“test1”。所以，它会像下面这样-

@Test(dependsOnMethod = {"test1","test2"})   // if depends on one or more tests

@Test(dependsOnMethod = "test1")   // if your test depends on only one other test

现在，让我们看一些关于如何在测试中使用dependsOnMethods的代码-

import org.testng.Assert;
import org.testng.annotations.Test;
 
public class CodekruTest {
 
    @Test // this test will run first
    public void test1() {
 
        System.out.println("test1 is passed");
        Assert.assertTrue(true);
    }
 
    @Test(dependsOnMethods = "test1") 
    public void test2() {
 
        System.out.println("test2 is passed");
        Assert.assertTrue(true);
    }
 
}

产出-

test1 is passed
test2 is passed
PASSED: test1
PASSED: test2

===============================================
    Default test
    Tests run: 2, Failures: 0, Skips: 0
===============================================

在这里，您可以看到首先执行test1（），然后执行test2（）。现在，让我们玩一些事情，因为许多紧迫的问题仍然没有答案。

• 如果test1（）失败了怎么办？test2（）测试会发生什么，因为它依赖于test1？
• 如果我们在test1（）方法上不使用@Test注释，但在test 2（）测试用例上仍然使用@Test（dependsOnMethod =“test1”），会怎么样？
• 如果我们在dependsOnMethods属性中传递一个方法列表会怎么样？他们的处决有命令吗？
• 如何在属于不同类的测试用例上使用dependsOnMethods？ 

如果test1（）失败了怎么办？test2（）测试会发生什么，因为它依赖于test1？

在这种情况下，test 2（）将被跳过，不会运行。我们来看看这个的实际效果-

import org.testng.Assert;
import org.testng.annotations.Test;
 
public class CodekruTest {
 
    @Test
    public void test1() {
 
        System.out.println("test1 is passed");
        Assert.assertTrue(false); // failing the condition here
    }
 
    @Test(dependsOnMethods = "test1") // now this test won't run as test1 failed
    public void test2() {
 
        System.out.println("test2 is passed");
        Assert.assertTrue(true);
    }
 
}

产出-

test1 is passed
FAILED: test1
java.lang.AssertionError: expected [true] but found [false]
	at org.testng.Assert.fail(Assert.java:96)
	at org.testng.Assert.failNotEquals(Assert.java:776)
	at org.testng.Assert.assertTrue(Assert.java:44)
	at org.testng.Assert.assertTrue(Assert.java:54)
	at Test.CodekruTest.test1(CodekruTest.java:12)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:564)
	at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:124)
	at org.testng.internal.Invoker.invokeMethod(Invoker.java:583)
	at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:719)
	at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:989)
	at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:125)
	at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:109)
	at org.testng.TestRunner.privateRun(TestRunner.java:648)
	at org.testng.TestRunner.run(TestRunner.java:505)
	at org.testng.SuiteRunner.runTest(SuiteRunner.java:455)
	at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:450)
	at org.testng.SuiteRunner.privateRun(SuiteRunner.java:415)
	at org.testng.SuiteRunner.run(SuiteRunner.java:364)
	at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
	at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:84)
	at org.testng.TestNG.runSuitesSequentially(TestNG.java:1208)
	at org.testng.TestNG.runSuitesLocally(TestNG.java:1137)
	at org.testng.TestNG.runSuites(TestNG.java:1049)
	at org.testng.TestNG.run(TestNG.java:1017)
	at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:115)
	at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:251)
	at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:77)

SKIPPED: test2
java.lang.Throwable: Method CodekruTest.test2()[pri:0, instance:Test.CodekruTest@27508c5d] depends on not successfully finished methods
	at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:888)
	at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:125)
	at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:109)
	at org.testng.TestRunner.privateRun(TestRunner.java:648)
	at org.testng.TestRunner.run(TestRunner.java:505)
	at org.testng.SuiteRunner.runTest(SuiteRunner.java:455)
	at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:450)
	at org.testng.SuiteRunner.privateRun(SuiteRunner.java:415)
	at org.testng.SuiteRunner.run(SuiteRunner.java:364)
	at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
	at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:84)
	at org.testng.TestNG.runSuitesSequentially(TestNG.java:1208)
	at org.testng.TestNG.runSuitesLocally(TestNG.java:1137)
	at org.testng.TestNG.runSuites(TestNG.java:1049)
	at org.testng.TestNG.run(TestNG.java:1017)
	at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:115)
	at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:251)
	at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:77)


===============================================
    Default test
    Tests run: 2, Failures: 1, Skips: 1
===============================================

如果我们在test1（）方法上不使用@Test注释，但在test 2（）测试用例上仍然使用@Test（dependsOnMethod =“test1”），会怎么样？

它将抛出一个错误，并且任何一个测试用例都不会运行，如下所示-

import org.testng.Assert;
import org.testng.annotations.Test;
 
public class CodekruTest {
 
    public void test1() {
 
        System.out.println("test1 is passed");
        Assert.assertTrue(true);
    }
 
    @Test(dependsOnMethods = "test1")
    public void test2() {
 
        System.out.println("test2 is passed");
        Assert.assertTrue(true);
    }
 
}

产出-

org.testng.TestNGException: 
Test.CodekruTest.test2() is depending on method public void Test.CodekruTest.test1(), which is not annotated with @Test or not included.
	at org.testng.internal.MethodHelper.findDependedUponMethods(MethodHelper.java:123)
	at org.testng.internal.MethodHelper.topologicalSort(MethodHelper.java:266)
	at org.testng.internal.MethodHelper.sortMethods(MethodHelper.java:376)
	at org.testng.internal.MethodHelper.collectAndOrderMethods(MethodHelper.java:65)
	at org.testng.TestRunner.initMethods(TestRunner.java:438)
	at org.testng.TestRunner.init(TestRunner.java:271)
	at org.testng.TestRunner.init(TestRunner.java:241)
	at org.testng.TestRunner.(TestRunner.java:192)
	at org.testng.remote.support.RemoteTestNG6_12$1.newTestRunner(RemoteTestNG6_12.java:33)
	at org.testng.remote.support.RemoteTestNG6_12$DelegatingTestRunnerFactory.newTestRunner(RemoteTestNG6_12.java:66)
	at org.testng.SuiteRunner$ProxyTestRunnerFactory.newTestRunner(SuiteRunner.java:713)
	at org.testng.SuiteRunner.init(SuiteRunner.java:260)
	at org.testng.SuiteRunner.(SuiteRunner.java:198)
	at org.testng.TestNG.createSuiteRunner(TestNG.java:1295)
	at org.testng.TestNG.createSuiteRunners(TestNG.java:1273)
	at org.testng.TestNG.runSuitesLocally(TestNG.java:1128)
	at org.testng.TestNG.runSuites(TestNG.java:1049)
	at org.testng.TestNG.run(TestNG.java:1017)
	at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:115)
	at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:251)
	at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:77)

如果我们在dependsOnMethods属性中传递一个方法列表会怎么样？他们的处决有命令吗？

不，没有测试的执行顺序，所以，如果我们通过一个测试列表，如@Test（dependsOnMethods = {“test1″，“test 2”}）. TestNG可以先执行test1或test 2，但可以保证它们将在使用dependsOnMethods属性的测试方法之前运行。

如何在属于不同类的测试用例上使用dependsOnMethods？

我们可以通过在dependsOnMethods属性中给出方法名的完整路径来实现。让我们创建两个不同的类，CodekruTestFirst和CodekruTestSecond，每个类都有自己的测试用例。CodekruTestFirst的测试用例依赖于CodekruTestSecond的测试用例。

CodekruTestFirst.java

import org.testng.Assert;
import org.testng.annotations.Test;
 
public class CodekruTestFirst {
 
    @Test()
    public void testFirst() {
        System.out.println("Excecuting test method in CodekruTestFirst class");
        Assert.assertTrue(true);
    }
 
}

CodekruTestSecond.java

import org.testng.Assert;
import org.testng.annotations.Test;
 
public class CodekruTestSecond {
 
    @Test(dependsOnMethods = "Demo.CodekruTestFirst.testFirst")
    public void testSecond() {
        System.out.println("Excecuting test method in CodekruTestSecond class");
        Assert.assertTrue(true);
    }
 
} 

我们现在将运行CodekruTestSecond类，并且CodekruTestFirst中的测试用例也将被执行，因为testSecond（）方法依赖于它。

产出-

Excecuting test method in CodekruTestFirst class
Excecuting test method in CodekruTestSecond class

===============================================
codekru
Total tests run: 2, Passes: 2, Failures: 0, Skips: 0

 注意事项： 依赖方法和依赖方法必须具有不同的名称。否则，您将遇到错误。

public class CodekruTestFirst {
 
    @Test
    public void test() {
        System.out.println("Excecuting test method in CodekruTestFirst class");
        Assert.assertTrue(true);
    }
 
}

public class CodekruTestSecond {
 
    @Test(dependsOnMethods = "Demo.CodekruTestFirst.test")
    public void test() {
        System.out.println("Excecuting test method in CodekruTestSecond class");
        Assert.assertTrue(true);
    }
 
}

现在，当我们运行CodekruTestSecond类时，我们会得到下面的错误。

org.testng.TestNGException: 
The following methods have cyclic dependencies:
CodekruTestSecond.test()[pri:0, instance:Demo.CodekruTestSecond@236e3f4e]

	at org.testng.internal.Graph.topologicalSort(Graph.java:128)
	at org.testng.internal.MethodHelper.topologicalSort(MethodHelper.java:299)
	at org.testng.internal.MethodHelper.sortMethods(MethodHelper.java:382)
	at org.testng.internal.MethodHelper.collectAndOrderMethods(MethodHelper.java:71)
	at org.testng.TestRunner.initMethods(TestRunner.java:517)
	at org.testng.TestRunner.init(TestRunner.java:336)
	at org.testng.TestRunner.init(TestRunner.java:289)
	at org.testng.TestRunner.(TestRunner.java:220)
	at org.testng.remote.support.RemoteTestNG6_12$1.newTestRunner(RemoteTestNG6_12.java:33)
	at org.testng.remote.support.RemoteTestNG6_12$DelegatingTestRunnerFactory.newTestRunner(RemoteTestNG6_12.java:66)
	at org.testng.ITestRunnerFactory.newTestRunner(ITestRunnerFactory.java:55)
	at org.testng.SuiteRunner$ProxyTestRunnerFactory.newTestRunner(SuiteRunner.java:676)
	at org.testng.SuiteRunner.init(SuiteRunner.java:178)
	at org.testng.SuiteRunner.(SuiteRunner.java:112)
	at org.testng.TestNG.createSuiteRunner(TestNG.java:1306)
	at org.testng.TestNG.createSuiteRunners(TestNG.java:1282)
	at org.testng.TestNG.runSuitesLocally(TestNG.java:1131)
	at org.testng.TestNG.runSuites(TestNG.java:1069)
	at org.testng.TestNG.run(TestNG.java:1037)
	at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:115)
	at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:251)
	at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:77)