diff --git a/src/makefile b/src/makefile
index 323e0c4..f596499 100644
--- a/src/makefile
+++ b/src/makefile
@@ -17,8 +17,11 @@ config.o: config.cpp config.hpp
 utils.o: utils.cpp utils.hpp
 	$(CXX) $(CXXFLAGS) -c utils.cpp
 
-tests: tests.o config.o utils.o
-	g++ -std=c++17 -Wall tests.o config.o utils.o -o tests $(TEST_LIBS)
+markdown.o: markdown.cpp markdown.hpp
+	$(CXX) $(CXXFLAGS) -c markdown.cpp
+
+tests: tests.o config.o utils.o markdown.o
+	g++ -std=c++17 -Wall tests.o config.o utils.o markdown.o -o tests $(TEST_LIBS)
 
 tests.o: tests.cpp config.hpp
 	$(CXX) $(CXXFLAGS) -c tests.cpp
diff --git a/src/markdown.hpp b/src/markdown.hpp
index 8df17fd..3bea590 100644
--- a/src/markdown.hpp
+++ b/src/markdown.hpp
@@ -13,6 +13,8 @@ struct Metadata {
 // Metadata are in yaml format at the top of the file
 // They are separated from the rest of the file with `---` at the beginning and
 // at the end.
+//
+// Returns nullopt when no metadata is found in the file
 std::optional<Metadata> get_metadata(const std::string &FILE_PATH);
 
 // Reads the markdown file and converts it to html.
diff --git a/src/tests b/src/tests
new file mode 100755
index 0000000..5f40e2c
Binary files /dev/null and b/src/tests differ
diff --git a/src/utils.cpp b/src/utils.cpp
index fd6977f..f34551d 100644
--- a/src/utils.cpp
+++ b/src/utils.cpp
@@ -5,6 +5,8 @@
 void trim(std::string &str) {
   str.erase(str.find_last_not_of(' ') + 1);
   str.erase(0, str.find_first_not_of(' '));
+  str.erase(str.find_last_not_of('"') + 1);
+  str.erase(0, str.find_first_not_of('"'));
 }
 
 std::set<std::string> convert_string_to_set(std::string input) {
diff --git a/src/utils.hpp b/src/utils.hpp
index 30c1aba..dad1238 100644
--- a/src/utils.hpp
+++ b/src/utils.hpp
@@ -1,7 +1,7 @@
 #include <set>
 #include <string>
 
-// trim string in-place, removing all whitespaces
+// trim string in-place, removing all whitespaces and surrounding '"' symbols
 void trim(std::string &str);
 
 // Convert a string containing an inline YAML/JSON-style list of strings