Asset Catalogs: loading a catalog definition file

Initial, limited implementation of loading a single asset catalog
definition file. These files are structured as follows:

  CATALOG_ID virtual/path/of/catalog
  SUBCATALOG_ID virtual/path/of/catalog/child
  SOMETHING_ELSE some/unrelated/hierarchy

These virtual paths will be used to show the catalog in a tree
structure; the tree structure itself is not part of this commit. Each
asset will have one catalog ID that determines where in that tree the
asset shows up.

Currently only a single catalog definition file can be read; merging
data from multiple such files, and writing them out again after changes
are made, is for future commits.

This commit only contains the code to load a single file, and unittests
to check that this actually works. No UI, no user-facing functionality
yet.

1 files changed, 62 insertions, 0 deletions

diff --git a/source/blender/blenkernel/intern/asset_catalog_test.cc b/source/blender/blenkernel/intern/asset_catalog_test.cc
new file mode 100644
index 00000000000..d6c00670bd6
--- /dev/null
+++ b/source/blender/blenkernel/intern/asset_catalog_test.cc
@@ -0,0 +1,62 @@
+/*
+ * 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) 2020 Blender Foundation
+ * All rights reserved.
+ */
+
+#include "BKE_asset_catalog.hh"
+
+#include "testing/testing.h"
+
+#include <filesystem>
+
+namespace fs = std::filesystem;
+
+namespace blender::bke::tests {
+
+TEST(AssetCatalogTest, load_single_file)
+{
+  const fs::path test_files_dir = blender::tests::flags_test_asset_dir();
+  if (test_files_dir.empty()) {
+    FAIL();
+  }
+
+  AssetCatalogService service;
+  service.load_from_disk(test_files_dir / "asset_library/single_catalog_definition_file.cats.txt");
+
+  // Test getting a non-existant catalog ID.
+  EXPECT_EQ(nullptr, service.find_catalog("NONEXISTANT"));
+
+  // Test getting a 7-bit ASCII catalog ID.
+  AssetCatalog *poses_elly = service.find_catalog("POSES_ELLY");
+  ASSERT_NE(nullptr, poses_elly);
+  EXPECT_EQ("POSES_ELLY", poses_elly->catalog_id);
+  EXPECT_EQ("character/Elly/poselib", poses_elly->path);
+
+  // Test whitespace stripping.
+  AssetCatalog *poses_whitespace = service.find_catalog("POSES_ELLY_WHITESPACE");
+  ASSERT_NE(nullptr, poses_whitespace);
+  EXPECT_EQ("POSES_ELLY_WHITESPACE", poses_whitespace->catalog_id);
+  EXPECT_EQ("character/Elly/poselib/whitespace", poses_whitespace->path);
+
+  // Test getting a UTF-8 catalog ID.
+  AssetCatalog *poses_ruzena = service.find_catalog("POSES_RUŽENA");
+  ASSERT_NE(nullptr, poses_ruzena);
+  EXPECT_EQ("POSES_RUŽENA", poses_ruzena->catalog_id);
+  EXPECT_EQ("character/Ružena/poselib", poses_ruzena->path);
+}
+
+}  // namespace blender::bke::tests