added tests for json parsing

include/util/json.hpp

@@ -13,9 +13,9 @@ struct fmt::formatter<Json::Value> : ostream_formatter {};
 namespace waybar::util {
 
 struct JsonParser {
-  JsonParser() {}
+  JsonParser() = default;
 
-  const Json::Value parse(const std::string& data) const {
+  Json::Value parse(const std::string& data) const {
     Json::Value root(Json::objectValue);
     if (data.empty()) {
       return root;

test/JsonParser.cpp

@@ -0,0 +1,26 @@
+#include "util/json.hpp"
+
+#if __has_include(<catch2/catch_test_macros.hpp>)
+#include <catch2/catch_test_macros.hpp>
+#else
+#include <catch2/catch.hpp>
+#endif
+
+TEST_CASE("Simple json", "[json]") {
+  SECTION("Parse simple json") {
+    std::string stringToTest = R"({"number": 5, "string": "test"})";
+    waybar::util::JsonParser parser;
+    Json::Value jsonValue = parser.parse(stringToTest);
+    REQUIRE(jsonValue["number"].asInt() == 5);
+	REQUIRE(jsonValue["string"].asString() == "test");
+  }
+}
+
+TEST_CASE("Json with unicode", "[json]") {
+  SECTION("Parse json with unicode") {
+	std::string stringToTest = R"({"test": "\xab"})";
+	waybar::util::JsonParser parser;
+	Json::Value jsonValue = parser.parse(stringToTest);
+	REQUIRE(jsonValue["test"].asString() == "\xab");
+  }
+}

test/meson.build

@@ -8,6 +8,7 @@ test_dep = [
 ]
 test_src = files(
     'main.cpp',
+    'JsonParser.cpp',
     'SafeSignal.cpp',
     'config.cpp',
     '../src/config.cpp',