added markdown tests

src/tests.cpp

@@ -1,7 +1,9 @@
 #include "config.hpp"
+#include "markdown.hpp"
 #include "utils.hpp"
 #include <catch2/catch_all.hpp>
 #include <catch2/catch_test_macros.hpp>
+#include <optional>
 #include <string>
 
 TEST_CASE("Checking config file read", "[config]") {
@@ -21,3 +23,27 @@ TEST_CASE("convert_string_to_set parses inline YAML string list") {
   const std::set<std::string> output = {"haha", "dupa", "xdd"};
   REQUIRE(convert_string_to_set(input) == output);
 }
+
+TEST_CASE("get_metadata function data correctness test") {
+  const std::string FILE_NAME = "../examples/post.md";
+  Metadata result = get_metadata(FILE_NAME).value();
+
+  std::string expected_author = "joseph";
+  std::string expected_date = "2026-01-01";
+  std::string expected_title = "Example of a blog post";
+  std::set<std::string> expected_tags = {"blog", "test", "lalilulelo"};
+
+  REQUIRE(result.author == expected_author);
+  REQUIRE(result.date == expected_date);
+  REQUIRE(result.title == expected_title);
+
+  for (const auto &tag : expected_tags) {
+    REQUIRE(result.tags.count(tag));
+  }
+}
+
+TEST_CASE("get_metadata function test with a file that doesn't have metadata") {
+  const std::string FILE_NAME = "../examples/no_metadata_post.md";
+  std::optional<Metadata> result = get_metadata(FILE_NAME);
+  REQUIRE(result == std::nullopt);
+}