Add unit tests for correct sdl detection for endian.

1 files changed, 65 insertions, 0 deletions

diff --git a/src/unittests/endian.cc b/src/unittests/endian.cc
new file mode 100644
index 000000000..3d0c66051
--- /dev/null
+++ b/src/unittests/endian.cc
@@ -0,0 +1,65 @@
+/*
+ *  The ManaPlus Client
+ *  Copyright (C) 2013-2017  The ManaPlus Developers
+ *
+ *  This file is part of The ManaPlus Client.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "unittests/unittests.h"
+
+#include "logger.h"
+
+#include "utils/delete2.h"
+
+PRAGMA48(GCC diagnostic push)
+PRAGMA48(GCC diagnostic ignored "-Wshadow")
+#include <SDL_endian.h>
+PRAGMA48(GCC diagnostic pop)
+
+#include "debug.h"
+
+#ifndef SDL_BIG_ENDIAN
+#error missing SDL_endian.h
+#endif  // SDL_BYTEORDER
+
+namespace
+{
+    union ByteOrderData final
+    {
+        uint32_t dwordData;
+        uint8_t byteData[4];
+    } __attribute__((packed));
+}  // namespace
+
+TEST_CASE("endian test", "")
+{
+    ByteOrderData data;
+    data.byteData[0] = 0x10;
+    data.byteData[1] = 0x20;
+    data.byteData[2] = 0x30;
+    data.byteData[3] = 0x40;
+    logger = new Logger();
+#if SDL_BYTEORDER == SDL_BIG_ENDIAN
+    REQUIRE(data.dwordData == 0x10203040);
+    logger->log("big endian detected");
+#else  // SDL_BYTEORDER == SDL_BIG_ENDIAN
+
+    REQUIRE(data.dwordData == 0x40302010);
+    logger->log("little endian detected");
+#endif  // SDL_BYTEORDER == SDL_BIG_ENDIAN
+
+    delete2(logger);
+}