icrease colour_transform coverage

Signed-off-by: Aleksandr Motsjonov <soswow@gmail.com>

Author: soswow

src/rawtoaces_util/cache_base.h

@@ -42,7 +42,7 @@ template <typename... Ts>
 std::ostream &operator<<( std::ostream &os, const std::tuple<Ts...> &tuple )
 {
     return println_tuple_impl( os, tuple, std::index_sequence_for<Ts...>{} );
-}
+} // LCOV_EXCL_LINE - bug in coverage tool
 
 namespace cache
 {

src/rawtoaces_util/transform_cache.cpp

@@ -14,7 +14,7 @@ std::ostream &
 operator<<( std::ostream &os, const rta::core::Metadata &data [[maybe_unused]] )
 {
     return os << std::string( "<Metadata>" );
-}
+} // LCOV_EXCL_LINE - bug in coverage tool
 
 bool operator==(
     const rta::core::Metadata &data1, const rta::core::Metadata &data2 )
@@ -48,31 +48,31 @@ get_WB_from_illuminant_cache()
     static cache::Cache<CameraAndIlluminantDescriptor, WBFromIlluminantData>
         WB_from_illuminant_cache( "WB from illuminant" );
     return WB_from_illuminant_cache;
-}
+} // LCOV_EXCL_LINE - bug in coverage tool
 
 cache::Cache<CameraAndWBDescriptor, IlluminantAndWBData> &
 get_illuminant_from_WB_cache()
 {
     static cache::Cache<CameraAndWBDescriptor, IlluminantAndWBData>
         illuminant_from_WB_cache( "illuminant from WB" );
     return illuminant_from_WB_cache;
-}
+} // LCOV_EXCL_LINE - bug in coverage tool
 
 cache::Cache<CameraAndIlluminantDescriptor, MatrixData> &
 get_matrix_from_illuminant_cache()
 {
     static cache::Cache<CameraAndIlluminantDescriptor, MatrixData>
         matrix_from_illuminant_cache( "matrix from illuminant" );
     return matrix_from_illuminant_cache;
-}
+} // LCOV_EXCL_LINE - bug in coverage tool
 
 cache::Cache<MetadataDescriptor, MatrixData> &
 get_matrix_from_dng_metadata_cache()
 {
     static cache::Cache<MetadataDescriptor, MatrixData>
         matrix_from_dng_metadata_cache( "matrix from DNG metadata" );
     return matrix_from_dng_metadata_cache;
-}
+} // LCOV_EXCL_LINE - bug in coverage tool
 
 } // namespace cache
 } // namespace rta

tests/CMakeLists.txt

@@ -20,6 +20,7 @@ endif()
 add_executable (
 	Test_usage_example_core
 	usage_example_core.cpp
+    test_utils.cpp
 )
 
 target_link_libraries(