echo("=== 新功能测试 ===");

echo("");
echo("=== 三元运算符测试 ===");
let a = 10;
let b = 20;
let max = (a > b) ? a : b;
echo("max =", max);
let min = (a < b) ? a : b;
echo("min =", min);

echo("");
echo("=== 文件IO测试 ===");
fopen("test_io.txt", "w");
fputs("Hello World\n", __tmp_file_result);
fclose(__tmp_file_result);

fopen("test_io.txt", "r");
fgets(__tmp_file_result);
echo("读取第一行:", __tmp_str_result);
fclose(__tmp_file_result);

echo("");
echo("=== 字符串函数测试 ===");
let s = "Hello World";
echo("strlen(s) =", strlen(s));
echo("strchr(s, 'W') =", strchr(s, 87));
echo("strstr(s, 'World') =", strstr(s, "World"));

toupper(s);
echo("toupper:", __tmp_str_result);

tolower(__tmp_str_result);
echo("tolower:", __tmp_str_result);

echo("");
echo("=== 数学函数测试 ===");
echo("sin(0) =", sin(0));
echo("cos(0) =", cos(0));
echo("asin(0) =", asin(0));
echo("acos(1) =", acos(1));
echo("atan(0) =", atan(0));
echo("atan2(1, 0) =", atan2(1, 0));
echo("log10(100) =", log10(100));
echo("exp(1) =", exp(1));

echo("");
echo("=== 数组操作测试 ===");
let arr = [1, 2, 3];
echo("初始数组:", arr);

push(arr, 4);
echo("push后:", arr);

let popped = pop(arr);
echo("pop出:", popped);
echo("pop后:", arr);

insert(arr, 1, 99);
echo("insert后:", arr);

let removed = remove(arr, 1);
echo("remove出:", removed);
echo("remove后:", arr);

echo("");
echo("=== 系统函数测试 ===");
getenv("PATH");
echo("PATH长度:", strlen(__tmp_str_result));

echo("");
echo("所有新功能测试完成!");