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PORunning a test with threadPoolSize > 1 and triggering a @BeforeMethod only once
 

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  1. PORunning a test with threadPoolSize > 1 and triggering a @BeforeMethod only once
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    <p>I want to run a test that uses a singelton resource <code>MyResource</code> which can be created and teared down. The resource represents another running program on the same machine which is controlled via command line <code>Runtime.exec</code>. The program must be explicitly started and shut down, therefore, calling <code>MyResource.establishConnection</code> twice will fail. Failing to call <code>MyResource.shutDown</code> will result in the application being open even after the Java program finishes. Now I want to write a test case which checks if the resource can be used after it was started. (Starting and shutting down is tested elsewhere.) The test case I wrote looks like this:</p> <pre><code>private MyResource myResource; @BeforeMethod(firstTimeOnly = true) public void setUp() throws Exception { myResource = new MyResource(); myResource.establishConnection(); } @AfterMethod(lastTimeOnly = true) public void tearDown() throws Exception { myResource.shutDown(); } @Test(invocationCount = 30, threadPoolSize = 5) public void testMethod() throws Exception { myResource.use(): } </code></pre> <p>One of the purposes of this test is to check if the resource (<code>MyResource</code>) behaves nicely when it is accessed concurrently. However, I now observe that the method annotated with <code>@BeforeMethod</code> is called three times - once for every thread - instead of only once. The <code>firstTimeOnly</code> seems to not apply to positive<code>threadPoolSize</code>s.</p> <p>Can I fix this? (There are other tests in this test class which are represented by other test methods. This is why I rather do not want to use for example <code>@BeforeTest</code> such that the application is restarted in between methods.)</p> <p>Thanks for any help.</p> <p><strong>Update</strong>: More mysteries. This code snippet</p> <pre><code>@BeforeMethod(firstTimeOnly = true) public void setUp() throws Exception { LOGGER.info("Set up"); } @AfterMethod(lastTimeOnly = true) public void tearDown() throws Exception { LOGGER.info("Tear down"); } @Test(invocationCount = 10) public void testName() throws Exception { LOGGER.info("Running test"); } </code></pre> <p>will print:</p> <blockquote> <p>Set up </p> <p>Running test </p> <p>Tear down </p> <p>Running test </p> <p>Running test </p> <p>Running test</p> <p>Running test </p> <p>Running test </p> <p>Running test </p> <p>Running test </p> <p>Running test</p> <p>Running test</p> </blockquote> <p>So not only is <code>setUp</code> called three times as described above, <code>tearDown</code> is called too early, even without setting <code>threadPoolSize</code>. This is in direct contrast to the javadoc of <code>@AfterMethod</code>'s <code>lastTimeOnly</code> which says:</p> <blockquote> <p>If true and the @Test method that was just run has an invocationCount > 1, this AfterMethod will only be invoked once (after the last test invocation).</p> </blockquote>
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    1. USRafael Winterhalter
    1. USRafael Winterhalter
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      1. PORunning a test with threadPoolSize > 1 and triggering a @BeforeMethod only once
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      1. VTUpMod
    1. COI've read this a couple of times, and I still can't understand your final goal. Do you want your setup to run before each invocation? Or just once before the test run?
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      1. USNathan Merrill
    2. COI basically want to achieve that `setup` is run once before all invocations of `runName` and `tearDown` once after that.
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      1. PORunning a test with threadPoolSize > 1 and triggering a @BeforeMethod only once
      1. USRafael Winterhalter
    3. COIf you only have 1 test in that class, you could use `@BeforeClass` and `@AfterClass`
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      1. PORunning a test with threadPoolSize > 1 and triggering a @BeforeMethod only once
      1. USNathan Merrill
 

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