Function

GLib-2.0 ▶ GLib ▶ test_trap_forkDeprecatedSince 2.16

  • Forks the current test program to execute a test case that might not return or that might abort.

    If usec_timeout is non-0, the forked test case is aborted and considered failing if its run time exceeds it.

    The forking behavior can be configured with GLib.TestTrapFlags flags.

    In the following example, the test code forks, the forked child process produces some sample output and exits successfully. The forking parent process then asserts successful child program termination and validates child program outputs.

      static void
      test_fork_patterns (void)
      {
        if (g_test_trap_fork (0, G_TEST_TRAP_SILENCE_STDOUT | G_TEST_TRAP_SILENCE_STDERR))
          {
            g_print ("some stdout text: somagic17
    ");
            g_printerr ("some stderr text: semagic43
    ");
            exit (0); // successful test run
          }
        g_test_trap_assert_passed ();
        g_test_trap_assert_stdout ("*somagic17*");
        g_test_trap_assert_stderr ("*semagic43*");
      }

    Parameters

    • Deprecatedusec_timeout: number

      timeout for the forked test in microseconds

    • Deprecatedtest_trap_flags: TestTrapFlags

      flags to modify forking behaviour

    Returns boolean

    true for the forked child and false for the executing parent process.

    2.16

    This function is implemented only on Unix platforms, is not always reliable due to problems inherent in fork-without-exec and doesn't set close-on-exec flag on its file descriptors. Use func@GLib.test_trap_subprocess] instead.