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+// Copyright 2016 The Kyua Authors.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+//   notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above copyright
+//   notice, this list of conditions and the following disclaimer in the
+//   documentation and/or other materials provided with the distribution.
+// * Neither the name of Google Inc. nor the names of its contributors
+//   may be used to endorse or promote products derived from this software
+//   without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+/// \file utils/test_utils.ipp
+/// Provides test-only convenience utilities.
+
+#if defined(UTILS_TEST_UTILS_IPP)
+#   error "utils/test_utils.hpp can only be included once"
+#endif
+#define UTILS_TEST_UTILS_IPP
+
+extern "C" {
+#include <sys/resource.h>
+}
+
+#include <cstdlib>
+#include <iostream>
+
+#include <atf-c++.hpp>
+
+#include "utils/defs.hpp"
+#include "utils/stacktrace.hpp"
+#include "utils/text/operations.ipp"
+
+namespace utils {
+
+
+/// Tries to prevent dumping core if we do not need one on a crash.
+///
+/// This is a best-effort operation provided so that tests that will cause
+/// a crash do not collect an unnecessary core dump, which can be slow on
+/// some systems (e.g. on macOS).
+inline void
+avoid_coredump_on_crash(void)
+{
+    struct ::rlimit rl;
+    rl.rlim_cur = 0;
+    rl.rlim_max = 0;
+    if (::setrlimit(RLIMIT_CORE, &rl) == -1) {
+        std::cerr << "Failed to zero core size limit; may dump core\n";
+    }
+}
+
+
+inline void abort_without_coredump(void) UTILS_NORETURN;
+
+
+/// Aborts execution and tries to not dump core.
+///
+/// The coredump avoidance is a best-effort operation provided so that tests
+/// that will cause a crash do not collect an unnecessary core dump, which can
+/// be slow on some systems (e.g. on macOS).
+inline void
+abort_without_coredump(void)
+{
+    avoid_coredump_on_crash();
+    std::abort();
+}
+
+
+/// Skips the test if coredump tests have been disabled by the user.
+///
+/// \param tc The calling test.
+inline void
+require_run_coredump_tests(const atf::tests::tc* tc)
+{
+    if (tc->has_config_var("run_coredump_tests") &&
+        !text::to_type< bool >(tc->get_config_var("run_coredump_tests"))) {
+        tc->skip("run_coredump_tests=false; not running test");
+    }
+}
+
+
+/// Prepares the test so that it can dump core, or skips it otherwise.
+///
+/// \param tc The calling test.
+inline void
+prepare_coredump_test(const atf::tests::tc* tc)
+{
+    require_run_coredump_tests(tc);
+
+    if (!unlimit_core_size()) {
+        tc->skip("Cannot unlimit the core file size; check limits manually");
+    }
+}
+
+
+}  // namespace utils