failed to build under linux

include/ngl/BufferTextures.h

@@ -19,6 +19,7 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of
 /// @brief BufferTexture storage class
 #include "Types.h"
 #include <string>
+#include <unordered_map>
 
 namespace ngl
 {
@@ -72,8 +73,8 @@ struct BufferTexture
 class BufferTextures
 {
     public:
-  static size_t numBuffers() noexcept;
-
+      static size_t numBuffers() noexcept;
+      static void clear() noexcept;
     private:
   static std::unordered_map< std::string, BufferTexture > s_texturebuffers;
 };

src/BufferTextures.cpp

@@ -10,4 +10,13 @@ size_t BufferTextures::numBuffers() noexcept
   return s_texturebuffers.size();
 }
 
-}
+void BufferTextures::clear() noexcept
+{
+  for(auto &t : s_texturebuffers)
+  {
+    glDeleteBuffers(1, &t.second.id);
+  }
+  s_texturebuffers.clear();
+}
+
+}// end namespace ngl

tests/BufferTextureTests.cpp

@@ -3,6 +3,12 @@
 
 TEST(BufferTextures,construct)
 {
+  ngl::BufferTextures::clear();
   EXPECT_EQ(ngl::BufferTextures::numBuffers(),0);
 }
 
+TEST(BufferTextures,add)
+{
+ngl::BufferTextures::clear();
+
+}