Asset Catalogs: add catalog filter for the asset browser

Given an "active catalog" (i.e. the one selected in the UI), construct
an `AssetCatalogFilter` instance. This filter can determine whether an
asset should be shown or not. It returns `true` when The asset's catalog
ID is:

- the active catalog,
- an alias of the active catalog (so different UUID that maps to the
  same path),
- a sub-catalog of the active catalog.

Not yet hooked up to the UI.

1 files changed, 56 insertions, 0 deletions

diff --git a/source/blender/blenkernel/intern/asset_catalog_test.cc b/source/blender/blenkernel/intern/asset_catalog_test.cc
index f3e1f7984a4..e8d40771b89 100644
--- a/source/blender/blenkernel/intern/asset_catalog_test.cc
+++ b/source/blender/blenkernel/intern/asset_catalog_test.cc
@@ -906,4 +906,60 @@ TEST_F(AssetCatalogTest, create_missing_catalogs_after_loading)
   EXPECT_EQ(1, loaded_service.count_catalogs_with_path("character/Ružena"));
 }
 
+TEST_F(AssetCatalogTest, create_catalog_filter)
+{
+  AssetCatalogService service(asset_library_root_);
+  service.load_from_disk();
+
+  /* Alias for the same catalog as the main one. */
+  AssetCatalog *alias_ruzena = service.create_catalog("character/Ružena/poselib");
+  /* Alias for a sub-catalog. */
+  AssetCatalog *alias_ruzena_hand = service.create_catalog("character/Ružena/poselib/hand");
+
+  AssetCatalogFilter filter = service.create_catalog_filter(UUID_POSES_RUZENA);
+
+  /* Positive test for loaded-from-disk catalogs. */
+  EXPECT_TRUE(filter.contains(UUID_POSES_RUZENA))
+      << "Main catalog should be included in the filter.";
+  EXPECT_TRUE(filter.contains(UUID_POSES_RUZENA_HAND))
+      << "Sub-catalog should be included in the filter.";
+  EXPECT_TRUE(filter.contains(UUID_POSES_RUZENA_FACE))
+      << "Sub-catalog should be included in the filter.";
+
+  /* Positive test for newly-created catalogs. */
+  EXPECT_TRUE(filter.contains(alias_ruzena->catalog_id))
+      << "Alias of main catalog should be included in the filter.";
+  EXPECT_TRUE(filter.contains(alias_ruzena_hand->catalog_id))
+      << "Alias of sub-catalog should be included in the filter.";
+
+  /* Negative test for unrelated catalogs. */
+  EXPECT_FALSE(filter.contains(BLI_uuid_nil())) << "Nil catalog should not be included.";
+  EXPECT_FALSE(filter.contains(UUID_ID_WITHOUT_PATH));
+  EXPECT_FALSE(filter.contains(UUID_POSES_ELLIE));
+  EXPECT_FALSE(filter.contains(UUID_POSES_ELLIE_WHITESPACE));
+  EXPECT_FALSE(filter.contains(UUID_POSES_ELLIE_TRAILING_SLASH));
+  EXPECT_FALSE(filter.contains(UUID_WITHOUT_SIMPLENAME));
+}
+
+TEST_F(AssetCatalogTest, create_catalog_filter_for_unknown_uuid)
+{
+  AssetCatalogService service;
+  const bUUID unknown_uuid = BLI_uuid_generate_random();
+
+  AssetCatalogFilter filter = service.create_catalog_filter(unknown_uuid);
+  EXPECT_TRUE(filter.contains(unknown_uuid));
+
+  EXPECT_FALSE(filter.contains(BLI_uuid_nil())) << "Nil catalog should not be included.";
+  EXPECT_FALSE(filter.contains(UUID_POSES_ELLIE));
+}
+
+TEST_F(AssetCatalogTest, create_catalog_filter_for_unassigned_assets)
+{
+  AssetCatalogService service;
+
+  AssetCatalogFilter filter = service.create_catalog_filter(BLI_uuid_nil());
+  EXPECT_TRUE(filter.contains(BLI_uuid_nil()));
+  EXPECT_FALSE(filter.contains(UUID_POSES_ELLIE));
+}
+
 }  // namespace blender::bke::tests