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In TestNG, the @Test(threadPoolSize=x) annotation defines the number of threads to be used while running a test method. It instructs TestNG to construct a thread pool to run the test procedure in several threads. The test method's running time will be considerably reduced by using a thread pool.
For example, if you have a test method that requires many threads to be executed for improved performance or to mimic concurrent usage, you may use the @Test(threadPoolSize=6) annotation to run the test method with 6 threads.
Here is a code snippet to understand it better:
@Test(invocationCount = 6, threadPoolSize = 6)
public void testThreadPools() {
System.out.printf("Thread Id : %s%n", Thread.currentThread().getId());
}
We have a dedicated blog for TestNG annotation where you will learn about it with practical examples.
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