X: add unittest to ensure no exception will be thrown.

test/unit/utXImporterExporter.cpp

@@ -62,3 +62,8 @@ public:
 TEST_F( utXImporterExporter, importXFromFileTest ) {
     EXPECT_TRUE( importerTest() );
 }
+
+TEST_F( utXImporterExporter, heap_overflow_in_tokenizer ) {
+    Assimp::Importer importer;
+    EXPECT_NO_THROW( importer.ReadFile( ASSIMP_TEST_MODELS_DIR "/X/OV_GetNextToken", 0 ) );
+}