Add assets settings document tests

src/assets/settings_document.h

@@ -0,0 +1,48 @@
+#pragma once
+
+#include "foundation/result.h"
+
+#include <cstddef>
+#include <cstdint>
+#include <string>
+#include <string_view>
+#include <variant>
+#include <vector>
+
+namespace pp::assets {
+
+constexpr std::size_t max_settings_entries = 4096;
+constexpr std::size_t max_settings_key_length = 128;
+constexpr std::size_t max_settings_string_length = 4096;
+
+using SettingsValue = std::variant<bool, std::int64_t, double, std::string>;
+
+struct SettingsEntry {
+    std::string key;
+    SettingsValue value;
+};
+
+class SettingsDocument {
+public:
+    [[nodiscard]] std::size_t size() const noexcept;
+    [[nodiscard]] bool empty() const noexcept;
+    [[nodiscard]] bool has(std::string_view key) const noexcept;
+    [[nodiscard]] const std::vector<SettingsEntry>& entries() const noexcept;
+
+    [[nodiscard]] pp::foundation::Status set(std::string_view key, SettingsValue value);
+    [[nodiscard]] pp::foundation::Result<SettingsValue> get(std::string_view key) const;
+    [[nodiscard]] pp::foundation::Status unset(std::string_view key) noexcept;
+    void clear() noexcept;
+
+private:
+    [[nodiscard]] std::vector<SettingsEntry>::iterator find_entry(std::string_view key) noexcept;
+    [[nodiscard]] std::vector<SettingsEntry>::const_iterator find_entry(std::string_view key) const noexcept;
+
+    std::vector<SettingsEntry> entries_;
+};
+
+[[nodiscard]] pp::foundation::Status validate_settings_key(std::string_view key) noexcept;
+[[nodiscard]] pp::foundation::Status validate_settings_value(const SettingsValue& value) noexcept;
+[[nodiscard]] const char* settings_value_type_name(const SettingsValue& value) noexcept;
+
+}