@Before
  public void before() throws Exception {
    pidFile = new File(temporaryFolder.getRoot(), "my.pid");
    actualPid = identifyPid();
    fakePid = new AvailablePid().findAvailablePid(PREFERRED_FAKE_PID);

    assertThat(pidFile).doesNotExist();
  }
Functional integration tests for {@link LocalProcessLauncher}.

<p>
Tests involving fakePid use {@link RetryRule} because the fakePid may become used by a real
process before the test executes.
geode-core/src/integrationTest/java/org/apache/geode/internal/process/LocalProcessLauncherIntegrationTest.java