ifcviewer: add tier-1 unit tests (Catch2 + CTest)

Covers the pure-logic modules with no Qt event loop or GL context: BVH build, LOD decimation, sidecar round-trip, instanced-geometry layout constants, and Federation save/load + relative-path policy. Each test binary compiles only the production source(s) under test, so the unit tier doesn't pull Qt/OpenCASCADE/IfcGeom into the test build. Gated behind BUILD_IFCVIEWER_TESTS=OFF; default builds remain offline. Catch2 v3.5.4 is fetched on demand via FetchContent.
2026-09-30 20:19:59 +00:00 · 2026-04-28 21:49:44 +10:00
parent 633c613da2
commit e21bd1ac96
10 changed files with 1145 additions and 0 deletions
@@ -0,0 +1,49 @@
+################################################################################
+#                                                                              #
+# This file is part of IfcOpenShell.                                           #
+#                                                                              #
+# IfcOpenShell is free software: you can redistribute it and/or modify         #
+# it under the terms of the Lesser GNU General Public License as published by  #
+# the Free Software Foundation, either version 3.0 of the License, or          #
+# (at your option) any later version.                                          #
+#                                                                              #
+# IfcOpenShell 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                 #
+# Lesser GNU General Public License for more details.                          #
+#                                                                              #
+# You should have received a copy of the Lesser GNU General Public License     #
+# along with this program. If not, see <http://www.gnu.org/licenses/>.         #
+#                                                                              #
+################################################################################
+
+# Tier-1 unit tests: pure-logic modules that need neither Qt nor an OpenGL
+# context. Each test binary compiles the production source(s) under test
+# directly (rather than linking the IfcViewer library) so the binaries stay
+# small and don't pull Qt6, OpenCASCADE, IfcGeom, etc. into the test build.
+
+set(IFCVIEWER_SRC ${CMAKE_CURRENT_SOURCE_DIR}/..)
+
+function(add_ifcviewer_unit_test name)
+    cmake_parse_arguments(T "" "" "SOURCES;LIBS" ${ARGN})
+    add_executable(${name} ${name}.cpp ${T_SOURCES})
+    target_include_directories(${name} PRIVATE ${IFCVIEWER_SRC})
+    target_link_libraries(${name} PRIVATE Catch2::Catch2WithMain ${T_LIBS})
+    catch_discover_tests(${name})
+endfunction()
+
+add_ifcviewer_unit_test(test_bvh_accel
+    SOURCES ${IFCVIEWER_SRC}/BvhAccel.cpp
+)
+
+add_ifcviewer_unit_test(test_lod_builder
+    SOURCES
+        ${IFCVIEWER_SRC}/LodBuilder.cpp
+    LIBS meshoptimizer::meshoptimizer
+)
+
+add_ifcviewer_unit_test(test_sidecar_cache
+    SOURCES ${IFCVIEWER_SRC}/SidecarCache.cpp
+)
+
+add_ifcviewer_unit_test(test_instanced_geometry)