Move dependencies in 'external' directory and pdate git submodules

external/Catch2/tests/ExtraTests/X03-DisabledExceptions-DefaultHandler.cpp

@@ -0,0 +1,39 @@
+
+//              Copyright Catch2 Authors
+// Distributed under the Boost Software License, Version 1.0.
+//   (See accompanying file LICENSE.txt or copy at
+//        https://www.boost.org/LICENSE_1_0.txt)
+
+// SPDX-License-Identifier: BSL-1.0
+
+#include <catch2/catch_test_macros.hpp>
+#include <catch2/benchmark/catch_benchmark.hpp>
+#include <catch2/matchers/catch_matchers.hpp>
+#include <catch2/matchers/catch_matchers_predicate.hpp>
+
+TEST_CASE("Tests that run") {
+    // All of these should be run and be reported
+    CHECK(1 == 2);
+    CHECK(1 == 1);
+    CHECK(1 != 3);
+    CHECK(1 == 4);
+}
+
+
+
+TEST_CASE("Tests that abort") {
+    // Avoid abort and other exceptional exits -- there is no way
+    // to tell CMake that abort is the desired outcome of a test.
+    std::set_terminate([](){exit(1);});
+    REQUIRE(1 == 1);
+    REQUIRE(1 != 2);
+    REQUIRE(1 == 3);
+    // We should not get here, because the test above aborts
+    REQUIRE(1 != 4);
+}
+
+TEST_CASE( "Misc. macros to check that they compile without exceptions" ) {
+    BENCHMARK( "simple benchmark" ) { return 1 * 2 + 3; };
+    REQUIRE_THAT( 1,
+                  Catch::Matchers::Predicate<int>( []( int i ) { return i == 1; } ) );
+}