1 files changed, 72 insertions, 0 deletions
diff --git a/tests/gtests/usd/usd_stage_creation_test.cc b/tests/gtests/usd/usd_stage_creation_test.cc
new file mode 100644
index 00000000000..fcf1e93ea7d
--- /dev/null
+++ b/tests/gtests/usd/usd_stage_creation_test.cc
@@ -0,0 +1,72 @@
+/*
+ * 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 (at your option) 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, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * The Original Code is Copyright (C) 2019 Blender Foundation.
+ * All rights reserved.
+ */
+#include "testing/testing.h"
+#include <pxr/usd/usd/stage.h>
+
+#include <string>
+
+extern "C" {
+#include "BLI_path_util.h"
+#include "BLI_utildefines.h"
+
+#include "BKE_appdir.h"
+
+/* Workaround to make it possible to pass a path at runtime to USD. See creator.c. */
+void usd_initialise_plugin_path(const char *datafiles_usd_path);
+}
+
+DEFINE_string(test_blender_executable_dir, "", "Blender's installation directory.");
+
+class USDStageCreationTest : public testing::Test {
+};
+
+TEST_F(USDStageCreationTest, JSONFileLoadingTest)
+{
+  std::string filename = "usd-stage-creation-test.usdc";
+
+  if (FLAGS_test_blender_executable_dir.empty()) {
+    FAIL() << "Pass the flag";
+  }
+
+  /* Required on Linux to make BKE_appdir_folder_id() find the datafiles.
+   * Without going to this directory, Blender looks for the datafiles in
+   * .../bin/tests instead of .../bin */
+  const char *blender_executable_dir = FLAGS_test_blender_executable_dir.c_str();
+  if (chdir(blender_executable_dir) < 0) {
+    FAIL() << "unable to change directory to " << FLAGS_test_blender_executable_dir;
+  }
+
+  const char *usd_datafiles_relpath = BKE_appdir_folder_id(BLENDER_DATAFILES, "usd");
+  EXPECT_NE(usd_datafiles_relpath, nullptr) << "Unable to find datafiles/usd";
+
+  char usd_datafiles_abspath[FILE_MAX];
+  BLI_path_join(usd_datafiles_abspath,
+                sizeof(usd_datafiles_abspath),
+                blender_executable_dir,
+                usd_datafiles_relpath,
+                NULL);
+
+  usd_initialise_plugin_path(usd_datafiles_abspath);
+
+  /* Simply the ability to create a USD Stage for a specific filename means that the extension has
+   * been recognised by the USD library, and that a USD plugin has been loaded to write such files.
+   * Practically, this is a test to see whether the USD JSON files can be found and loaded. */
+  pxr::UsdStageRefPtr usd_stage = pxr::UsdStage::CreateNew(filename);
+  EXPECT_TRUE(usd_stage) << "unable to find suitable USD plugin to write " << filename;
+}