[gjs: 6/9] tests: Don't time-limit the unit tests

[Philip Chimento <pchimento src gnome org>]

commit cf57f25f3b9fca36d699b54fe2892304968b14f7
Author: Philip Chimento <philip chimento gmail com>
Date:   Mon Aug 20 22:28:52 2018 -0400

    tests: Don't time-limit the unit tests
    
    Previously there was code that would intentionally crash if more than 7
    minutes elapsed, in case the tests got stuck on autobuilders. This code
    is more harmful than helpful, see the following table:
    
      Times it has killed a stuck test on GitLab: . . . . . . . . 0
      Times it has killed a JS_GC_ZEAL test:  . . . . . . . . .  34
      Times it has killed my GDB session because I forgot
        to add the stupid environment variable: . . . . . . . . 478

 test/gjs-test-utils.cpp | 88 -------------------------------------------------
 test/gjs-test-utils.h   |  2 --
 test/gjs-tests.cpp      |  5 ---
 3 files changed, 95 deletions(-)
---
diff --git a/test/gjs-test-utils.cpp b/test/gjs-test-utils.cpp
index e3d89342..127d2baf 100644
--- a/test/gjs-test-utils.cpp
+++ b/test/gjs-test-utils.cpp
@@ -88,91 +88,3 @@ gjs_unit_test_exception_message(GjsUnitTestFixture *fx)
     JS_ClearPendingException(fx->cx);
     return retval;
 }
-
-/* Fork a process that waits the given time then
- * sends us ABRT
- */
-void
-gjs_crash_after_timeout(int seconds)
-{
-    pid_t parent_pid;
-    int pipe_fds[2];
-    fd_set read_fds;
-    struct timeval term_time;
-    struct timeval remaining;
-    struct timeval now;
-    int old_flags;
-
-    /* We use a pipe to know in the child when the parent exited */
-    if (pipe(pipe_fds) != 0) {
-        fprintf(stderr, "Failed to create pipe to crash-in-timeout process: %s\n",
-                strerror(errno));
-        return;
-    }
-
-    /* We want pipe_fds[1] to only be open in the parent process; when it closes
-     * the child will see an EOF. Setting FD_CLOEXEC is protection in case the
-     * parent spawns off some process without properly closing fds.
-     */
-    old_flags = fcntl(pipe_fds[1], F_GETFD);
-    if (old_flags == -1 ||
-        fcntl(pipe_fds[1], F_SETFD, old_flags | FD_CLOEXEC) != 0) {
-        fprintf(stderr, "Couldn't make crash-timeout pipe FD_CLOEXEC: %s\n",
-                strerror(errno));
-        return;
-    }
-
-    parent_pid = getpid();
-
-    switch (fork()) {
-    case -1:
-        fprintf(stderr, "Failed to fork crash-in-timeout process: %s\n",
-                strerror(errno));
-        return;
-    case 0:
-        /* child */
-        break;
-    default:
-        /* parent */
-        close(pipe_fds[0]);
-        return;
-    }
-
-    close (pipe_fds[1]);
-
-    gettimeofday (&now, NULL);
-
-    term_time = now;
-    term_time.tv_sec += seconds;
-
-    FD_ZERO(&read_fds);
-    FD_SET(pipe_fds[0], &read_fds);
-
-    while (true) {
-        remaining.tv_sec = term_time.tv_sec - now.tv_sec;
-        remaining.tv_usec = term_time.tv_usec - now.tv_usec;
-        if (remaining.tv_usec < 0) {
-            remaining.tv_usec += 1000;
-            remaining.tv_sec -= 1;
-        }
-
-        if (remaining.tv_sec < 0) /* expired */
-            break;
-
-        select(pipe_fds[0] + 1, &read_fds, NULL, NULL, &remaining);
-        if (FD_ISSET(pipe_fds[0], &read_fds)) {
-            /* The parent exited */
-            _exit(0);
-        }
-
-        gettimeofday(&now, NULL);
-    }
-
-    if (kill(parent_pid, 0) == 0) {
-        fprintf(stderr, "Timeout of %d seconds expired; aborting process %d\n",
-                seconds, (int) parent_pid);
-        kill(parent_pid, SIGABRT);
-    }
-
-    _exit(1);
-}
diff --git a/test/gjs-test-utils.h b/test/gjs-test-utils.h
index 92c4c4cf..c9ba764e 100644
--- a/test/gjs-test-utils.h
+++ b/test/gjs-test-utils.h
@@ -46,8 +46,6 @@ void gjs_unit_test_fixture_teardown(GjsUnitTestFixture *fx,
 
 char *gjs_unit_test_exception_message(GjsUnitTestFixture *fx);
 
-void gjs_crash_after_timeout(int seconds);
-
 void gjs_test_add_tests_for_coverage ();
 
 void gjs_test_add_tests_for_parse_call_args(void);
diff --git a/test/gjs-tests.cpp b/test/gjs-tests.cpp
index 820be6fa..e482c80f 100644
--- a/test/gjs-tests.cpp
+++ b/test/gjs-tests.cpp
@@ -406,11 +406,6 @@ int
 main(int    argc,
      char **argv)
 {
-    /* give the unit tests 7 minutes to complete, unless an environment variable
-     * is set; use this when running under GDB, for example */
-    if (!g_getenv("GJS_TEST_SKIP_TIMEOUT"))
-        gjs_crash_after_timeout(60 * 7);
-
     /* Avoid interference in the tests from stray environment variable */
     g_unsetenv("GJS_ENABLE_PROFILER");