We can specify list of dependent test methods using 'dependsOnMethods' property. There is no guarantee on the order on which the methods depended upon will be run, but it is guaranteed that all these methods will run before the test method that contains this annotation is run.
Example: Test method A depend on methods B, C and D
@Test(dependsOnMethods = { "B", "C", "D" })
public void A() {
System.out.println("I am in A");
}
DependentOnMethodsTest1.java
package com.sample.app.tests;
import org.testng.annotations.Test;
public class DependentOnMethodsTest1 {
@Test(dependsOnMethods = { "B", "C", "D" })
public void A() {
System.out.println("I am in A");
}
@Test
public void B() {
System.out.println("I am in B");
}
@Test
public void C() {
System.out.println("I am in C");
}
@Test
public void D() {
System.out.println("I am in D");
}
}
Run 'DependentOnMethodsTest1' class, you will see below messages in console.
[RemoteTestNG] detected TestNG version 7.0.0
I am in B
I am in C
I am in D
I am in A
PASSED: B
PASSED: C
PASSED: D
PASSED: A
===============================================
Default test
Tests run: 4, Failures: 0, Skips: 0
===============================================
===============================================
Default suite
Total tests run: 4, Passes: 4, Failures: 0, Skips: 0
===============================================
As you see the console messages, you can confirm methods B, C and D are executed before method A gets executed.
if any of the dependent methods failed, then the test method will not be run and will be flagged as a SKIP.
package com.sample.app.tests;
import static org.testng.Assert.assertTrue;
import org.testng.annotations.Test;
public class DependentOnMethodsTest2 {
@Test(dependsOnMethods = { "B", "C", "D" })
public void A() {
System.out.println("I am in A");
}
@Test
public void B() {
System.out.println("I am in B");
}
@Test
public void C() {
System.out.println("I am in C");
assertTrue(false);
}
@Test
public void D() {
System.out.println("I am in D");
}
}
As you see above snippet, test method A depend on methods B, C and D. I am failing the test method ‘C’ intentionally.
Run ‘DependentOnMethodsTest2.java’, you will see below messages in console.
[RemoteTestNG] detected TestNG version 7.0.0
I am in B
I am in C
I am in D
PASSED: B
PASSED: D
FAILED: C
java.lang.AssertionError: did not expect to find [true] but found [false]
at org.testng.Assert.fail(Assert.java:97)
at org.testng.Assert.failNotEquals(Assert.java:969)
at org.testng.Assert.assertTrue(Assert.java:43)
at org.testng.Assert.assertTrue(Assert.java:53)
at com.sample.app.tests.DependentOnMethodsTest2.C(DependentOnMethodsTest2.java:22)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:133)
at org.testng.internal.TestInvoker.invokeMethod(TestInvoker.java:584)
at org.testng.internal.TestInvoker.invokeTestMethod(TestInvoker.java:172)
at org.testng.internal.MethodRunner.runInSequence(MethodRunner.java:46)
at org.testng.internal.TestInvoker$MethodInvocationAgent.invoke(TestInvoker.java:804)
at org.testng.internal.TestInvoker.invokeTestMethods(TestInvoker.java:145)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:146)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:128)
at java.util.ArrayList.forEach(ArrayList.java:1257)
at org.testng.TestRunner.privateRun(TestRunner.java:770)
at org.testng.TestRunner.run(TestRunner.java:591)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:402)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:396)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:355)
at org.testng.SuiteRunner.run(SuiteRunner.java:304)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:53)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:96)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1180)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1102)
at org.testng.TestNG.runSuites(TestNG.java:1032)
at org.testng.TestNG.run(TestNG.java:1000)
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: A
java.lang.Throwable: Method DependentOnMethodsTest2.A()[pri:0, instance:com.sample.app.tests.DependentOnMethodsTest2@5ce81285] depends on not successfully finished methods
at org.testng.internal.TestInvoker.invokeTestMethods(TestInvoker.java:99)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:146)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:128)
at java.util.ArrayList.forEach(ArrayList.java:1257)
at org.testng.TestRunner.privateRun(TestRunner.java:770)
at org.testng.TestRunner.run(TestRunner.java:591)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:402)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:396)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:355)
at org.testng.SuiteRunner.run(SuiteRunner.java:304)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:53)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:96)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1180)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1102)
at org.testng.TestNG.runSuites(TestNG.java:1032)
at org.testng.TestNG.run(TestNG.java:1000)
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: 4, Failures: 1, Skips: 1
===============================================
===============================================
Default suite
Total tests run: 4, Passes: 2, Failures: 1, Skips: 1
===============================================
From the console messages you can confirm that the test method A is skipped.
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