function populate_test(test_id) {
    let test_display = document.getElementById("test_display");

    let req = {
        action: "get_test",
        id: test_id
    }
    request(req).then(resp => {
        let test_data = JSON.parse(resp);
        test_data["challenges"].forEach((challenge) => {
            let challenge_box = document.createElement("section");
            challenge_box.classList.add("challenge");
            let question = document.createElement("span");
            question.classList.add("question");
            question.innerHTML = challenge["question"];
            let answer_container = document.createElement("section");
            answer_container.classList.add("answer-container");
            challenge_box.append(question, answer_container);

            challenge["answers"].forEach((answer) => {
                let answer_section = document.createElement("section");
                answer_section.classList.add("answer");
                answer_section.innerHTML = answer;
                answer_container.appendChild(answer_section);
            });

            test_display.appendChild(challenge_box);
        });
    });
}